avdevice/lavfi: add io.h, should fix msvc build
[ffmpeg.git] / ffprobe.c
index a87110d..1329466 100644 (file)
--- a/ffprobe.c
+++ b/ffprobe.c
@@ -24,7 +24,7 @@
  */
 
 #include "config.h"
-#include "version.h"
+#include "libavutil/ffversion.h"
 
 #include <string.h>
 
@@ -37,7 +37,9 @@
 #include "libavutil/pixdesc.h"
 #include "libavutil/dict.h"
 #include "libavutil/libm.h"
+#include "libavutil/parseutils.h"
 #include "libavutil/timecode.h"
+#include "libavutil/timestamp.h"
 #include "libavdevice/avdevice.h"
 #include "libswscale/swscale.h"
 #include "libswresample/swresample.h"
@@ -52,16 +54,24 @@ static int do_count_frames = 0;
 static int do_count_packets = 0;
 static int do_read_frames  = 0;
 static int do_read_packets = 0;
+static int do_show_chapters = 0;
 static int do_show_error   = 0;
 static int do_show_format  = 0;
 static int do_show_frames  = 0;
-static AVDictionary *fmt_entries_to_show = NULL;
 static int do_show_packets = 0;
+static int do_show_programs = 0;
 static int do_show_streams = 0;
+static int do_show_stream_disposition = 0;
 static int do_show_data    = 0;
 static int do_show_program_version  = 0;
 static int do_show_library_versions = 0;
 
+static int do_show_chapter_tags = 0;
+static int do_show_format_tags = 0;
+static int do_show_frame_tags = 0;
+static int do_show_program_tags = 0;
+static int do_show_stream_tags = 0;
+
 static int show_value_unit              = 0;
 static int use_value_prefix             = 0;
 static int use_byte_value_binary_prefix = 0;
@@ -69,11 +79,25 @@ static int use_value_sexagesimal_format = 0;
 static int show_private_data            = 1;
 
 static char *print_format;
+static char *stream_specifier;
+
+typedef struct {
+    int id;             ///< identifier
+    int64_t start, end; ///< start, end in second/AV_TIME_BASE units
+    int has_start, has_end;
+    int start_is_offset, end_is_offset;
+    int duration_frames;
+} ReadInterval;
+
+static ReadInterval *read_intervals;
+static int read_intervals_nb = 0;
 
 /* section structure definition */
 
+#define SECTION_MAX_NB_CHILDREN 10
+
 struct section {
-    int id;             ///< unique id indentifying a section
+    int id;             ///< unique id identifying a section
     const char *name;
 
 #define SECTION_FLAG_IS_WRAPPER      1 ///< the section only contains other sections, but has no data at its own level
@@ -81,11 +105,18 @@ struct section {
 #define SECTION_FLAG_HAS_VARIABLE_FIELDS 4 ///< the section may contain a variable number of fields with variable keys.
                                            ///  For these sections the element_name field is mandatory.
     int flags;
+    int children_ids[SECTION_MAX_NB_CHILDREN+1]; ///< list of children section IDS, terminated by -1
     const char *element_name; ///< name of the contained element, if provided
+    const char *unique_name;  ///< unique section name, in case the name is ambiguous
+    AVDictionary *entries_to_show;
+    int show_all_entries;
 };
 
 typedef enum {
     SECTION_ID_NONE = -1,
+    SECTION_ID_CHAPTER,
+    SECTION_ID_CHAPTER_TAGS,
+    SECTION_ID_CHAPTERS,
     SECTION_ID_ERROR,
     SECTION_ID_FORMAT,
     SECTION_ID_FORMAT_TAGS,
@@ -97,30 +128,53 @@ typedef enum {
     SECTION_ID_PACKET,
     SECTION_ID_PACKETS,
     SECTION_ID_PACKETS_AND_FRAMES,
+    SECTION_ID_PROGRAM_STREAM_DISPOSITION,
+    SECTION_ID_PROGRAM_STREAM_TAGS,
+    SECTION_ID_PROGRAM,
+    SECTION_ID_PROGRAM_STREAMS,
+    SECTION_ID_PROGRAM_STREAM,
+    SECTION_ID_PROGRAM_TAGS,
     SECTION_ID_PROGRAM_VERSION,
+    SECTION_ID_PROGRAMS,
     SECTION_ID_ROOT,
     SECTION_ID_STREAM,
+    SECTION_ID_STREAM_DISPOSITION,
     SECTION_ID_STREAMS,
-    SECTION_ID_STREAM_TAGS
+    SECTION_ID_STREAM_TAGS,
+    SECTION_ID_SUBTITLE,
 } SectionID;
 
-static const struct section sections[] = {
-    [SECTION_ID_ERROR] =              { SECTION_ID_ERROR,              "error" },
-    [SECTION_ID_FORMAT] =             { SECTION_ID_FORMAT,             "format" },
-    [SECTION_ID_FORMAT_TAGS] =        { SECTION_ID_FORMAT_TAGS,        "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, .element_name = "tag" },
-    [SECTION_ID_FRAME] =              { SECTION_ID_FRAME,              "frame" },
-    [SECTION_ID_FRAMES] =             { SECTION_ID_FRAMES,             "frames", SECTION_FLAG_IS_ARRAY },
-    [SECTION_ID_FRAME_TAGS] =         { SECTION_ID_FRAME_TAGS,         "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, .element_name = "tag" },
-    [SECTION_ID_LIBRARY_VERSION] =    { SECTION_ID_LIBRARY_VERSION,    "library_version" },
-    [SECTION_ID_LIBRARY_VERSIONS] =   { SECTION_ID_LIBRARY_VERSIONS,   "library_versions", SECTION_FLAG_IS_ARRAY },
-    [SECTION_ID_PACKET] =             { SECTION_ID_PACKET,             "packet" },
-    [SECTION_ID_PACKETS] =            { SECTION_ID_PACKETS,            "packets", SECTION_FLAG_IS_ARRAY },
-    [SECTION_ID_PACKETS_AND_FRAMES] = { SECTION_ID_PACKETS_AND_FRAMES, "packets_and_frames", SECTION_FLAG_IS_ARRAY },
-    [SECTION_ID_PROGRAM_VERSION] =    { SECTION_ID_PROGRAM_VERSION,    "program_version" },
-    [SECTION_ID_ROOT] =               { SECTION_ID_ROOT,               "root", SECTION_FLAG_IS_WRAPPER },
-    [SECTION_ID_STREAM] =             { SECTION_ID_STREAM,             "stream" },
-    [SECTION_ID_STREAMS] =            { SECTION_ID_STREAMS,            "streams", SECTION_FLAG_IS_ARRAY },
-    [SECTION_ID_STREAM_TAGS] =        { SECTION_ID_STREAM_TAGS,        "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, .element_name = "tag" },
+static struct section sections[] = {
+    [SECTION_ID_CHAPTERS] =           { SECTION_ID_CHAPTERS, "chapters", SECTION_FLAG_IS_ARRAY, { SECTION_ID_CHAPTER, -1 } },
+    [SECTION_ID_CHAPTER] =            { SECTION_ID_CHAPTER, "chapter", 0, { SECTION_ID_CHAPTER_TAGS, -1 } },
+    [SECTION_ID_CHAPTER_TAGS] =       { SECTION_ID_CHAPTER_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "chapter_tags" },
+    [SECTION_ID_ERROR] =              { SECTION_ID_ERROR, "error", 0, { -1 } },
+    [SECTION_ID_FORMAT] =             { SECTION_ID_FORMAT, "format", 0, { SECTION_ID_FORMAT_TAGS, -1 } },
+    [SECTION_ID_FORMAT_TAGS] =        { SECTION_ID_FORMAT_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "format_tags" },
+    [SECTION_ID_FRAMES] =             { SECTION_ID_FRAMES, "frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_FRAME, SECTION_ID_SUBTITLE, -1 } },
+    [SECTION_ID_FRAME] =              { SECTION_ID_FRAME, "frame", 0, { SECTION_ID_FRAME_TAGS, -1 } },
+    [SECTION_ID_FRAME_TAGS] =         { SECTION_ID_FRAME_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "frame_tags" },
+    [SECTION_ID_LIBRARY_VERSIONS] =   { SECTION_ID_LIBRARY_VERSIONS, "library_versions", SECTION_FLAG_IS_ARRAY, { SECTION_ID_LIBRARY_VERSION, -1 } },
+    [SECTION_ID_LIBRARY_VERSION] =    { SECTION_ID_LIBRARY_VERSION, "library_version", 0, { -1 } },
+    [SECTION_ID_PACKETS] =            { SECTION_ID_PACKETS, "packets", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
+    [SECTION_ID_PACKETS_AND_FRAMES] = { SECTION_ID_PACKETS_AND_FRAMES, "packets_and_frames", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PACKET, -1} },
+    [SECTION_ID_PACKET] =             { SECTION_ID_PACKET, "packet", 0, { -1 } },
+    [SECTION_ID_PROGRAM_STREAM_DISPOSITION] = { SECTION_ID_PROGRAM_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "program_stream_disposition" },
+    [SECTION_ID_PROGRAM_STREAM_TAGS] =        { SECTION_ID_PROGRAM_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_stream_tags" },
+    [SECTION_ID_PROGRAM] =                    { SECTION_ID_PROGRAM, "program", 0, { SECTION_ID_PROGRAM_TAGS, SECTION_ID_PROGRAM_STREAMS, -1 } },
+    [SECTION_ID_PROGRAM_STREAMS] =            { SECTION_ID_PROGRAM_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM_STREAM, -1 }, .unique_name = "program_streams" },
+    [SECTION_ID_PROGRAM_STREAM] =             { SECTION_ID_PROGRAM_STREAM, "stream", 0, { SECTION_ID_PROGRAM_STREAM_DISPOSITION, SECTION_ID_PROGRAM_STREAM_TAGS, -1 }, .unique_name = "program_stream" },
+    [SECTION_ID_PROGRAM_TAGS] =               { SECTION_ID_PROGRAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "program_tags" },
+    [SECTION_ID_PROGRAM_VERSION] =    { SECTION_ID_PROGRAM_VERSION, "program_version", 0, { -1 } },
+    [SECTION_ID_PROGRAMS] =                   { SECTION_ID_PROGRAMS, "programs", SECTION_FLAG_IS_ARRAY, { SECTION_ID_PROGRAM, -1 } },
+    [SECTION_ID_ROOT] =               { SECTION_ID_ROOT, "root", SECTION_FLAG_IS_WRAPPER,
+                                        { SECTION_ID_CHAPTERS, SECTION_ID_FORMAT, SECTION_ID_FRAMES, SECTION_ID_PROGRAMS, SECTION_ID_STREAMS,
+                                          SECTION_ID_PACKETS, SECTION_ID_ERROR, SECTION_ID_PROGRAM_VERSION, SECTION_ID_LIBRARY_VERSIONS, -1} },
+    [SECTION_ID_STREAMS] =            { SECTION_ID_STREAMS, "streams", SECTION_FLAG_IS_ARRAY, { SECTION_ID_STREAM, -1 } },
+    [SECTION_ID_STREAM] =             { SECTION_ID_STREAM, "stream", 0, { SECTION_ID_STREAM_DISPOSITION, SECTION_ID_STREAM_TAGS, -1 } },
+    [SECTION_ID_STREAM_DISPOSITION] = { SECTION_ID_STREAM_DISPOSITION, "disposition", 0, { -1 }, .unique_name = "stream_disposition" },
+    [SECTION_ID_STREAM_TAGS] =        { SECTION_ID_STREAM_TAGS, "tags", SECTION_FLAG_HAS_VARIABLE_FIELDS, { -1 }, .element_name = "tag", .unique_name = "stream_tags" },
+    [SECTION_ID_SUBTITLE] =           { SECTION_ID_SUBTITLE, "subtitle", 0, { -1 } },
 };
 
 static const OptionDef *options;
@@ -136,13 +190,17 @@ static const char unit_second_str[]         = "s"    ;
 static const char unit_hertz_str[]          = "Hz"   ;
 static const char unit_byte_str[]           = "byte" ;
 static const char unit_bit_per_second_str[] = "bit/s";
+
+static int nb_streams;
 static uint64_t *nb_streams_packets;
 static uint64_t *nb_streams_frames;
+static int *selected_streams;
 
-void av_noreturn exit_program(int ret)
+static void ffprobe_cleanup(int ret)
 {
-    av_dict_free(&fmt_entries_to_show);
-    exit(ret);
+    int i;
+    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
+        av_dict_free(&(sections[i].entries_to_show));
 }
 
 struct unit_value {
@@ -189,6 +247,7 @@ static char *value_string(char *buf, int buf_size, struct unit_value uv)
                 vald /= pow(10, index * 3);
                 prefix_string = decimal_unit_prefixes[index];
             }
+            vali = vald;
         }
 
         if (show_float || (use_value_prefix && vald != (long long int)vald))
@@ -209,6 +268,13 @@ typedef struct WriterContext WriterContext;
 #define WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS 1
 #define WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER 2
 
+typedef enum {
+    WRITER_STRING_VALIDATION_FAIL,
+    WRITER_STRING_VALIDATION_REPLACE,
+    WRITER_STRING_VALIDATION_IGNORE,
+    WRITER_STRING_VALIDATION_NB
+} StringValidation;
+
 typedef struct Writer {
     const AVClass *priv_class;      ///< private class of the writer, if any
     int priv_size;                  ///< private size for the writer context
@@ -243,10 +309,16 @@ struct WriterContext {
 
     /** section per each level */
     const struct section *section[SECTION_MAX_NB_LEVELS];
+    AVBPrint section_pbuf[SECTION_MAX_NB_LEVELS]; ///< generic print buffer dedicated to each section,
+                                                  ///  used by various writers
 
     unsigned int nb_section_packet; ///< number of the packet section in case we are in "packets_and_frames" section
     unsigned int nb_section_frame;  ///< number of the frame  section in case we are in "packets_and_frames" section
     unsigned int nb_section_packet_frame; ///< nb_section_packet or nb_section_frame according if is_packets_and_frames
+
+    StringValidation string_validation;
+    char *string_validation_replacement;
+    unsigned int string_validation_utf8_flags;
 };
 
 static const char *writer_get_name(void *p)
@@ -255,32 +327,70 @@ static const char *writer_get_name(void *p)
     return wctx->writer->name;
 }
 
+#define OFFSET(x) offsetof(WriterContext, x)
+
+static const AVOption writer_options[] = {
+    { "string_validation", "set string validation mode",
+      OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
+    { "sv", "set string validation mode",
+      OFFSET(string_validation), AV_OPT_TYPE_INT, {.i64=WRITER_STRING_VALIDATION_REPLACE}, 0, WRITER_STRING_VALIDATION_NB-1, .unit = "sv" },
+    { "ignore",  NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_IGNORE},  .unit = "sv" },
+    { "replace", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_REPLACE}, .unit = "sv" },
+    { "fail",    NULL, 0, AV_OPT_TYPE_CONST, {.i64 = WRITER_STRING_VALIDATION_FAIL},    .unit = "sv" },
+    { "string_validation_replacement", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str=""}},
+    { "svr", "set string validation replacement string", OFFSET(string_validation_replacement), AV_OPT_TYPE_STRING, {.str="\xEF\xBF\xBD"}},
+    { NULL }
+};
+
+static void *writer_child_next(void *obj, void *prev)
+{
+    WriterContext *ctx = obj;
+    if (!prev && ctx->writer && ctx->writer->priv_class && ctx->priv)
+        return ctx->priv;
+    return NULL;
+}
+
 static const AVClass writer_class = {
-    "Writer",
-    writer_get_name,
-    NULL,
-    LIBAVUTIL_VERSION_INT,
+    .class_name = "Writer",
+    .item_name  = writer_get_name,
+    .option     = writer_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+    .child_next = writer_child_next,
 };
 
 static void writer_close(WriterContext **wctx)
 {
+    int i;
+
     if (!*wctx)
         return;
 
     if ((*wctx)->writer->uninit)
         (*wctx)->writer->uninit(*wctx);
+    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
+        av_bprint_finalize(&(*wctx)->section_pbuf[i], NULL);
     if ((*wctx)->writer->priv_class)
         av_opt_free((*wctx)->priv);
     av_freep(&((*wctx)->priv));
+    av_opt_free(*wctx);
     av_freep(wctx);
 }
 
+static void bprint_bytes(AVBPrint *bp, const uint8_t *ubuf, size_t ubuf_size)
+{
+    int i;
+    av_bprintf(bp, "0X");
+    for (i = 0; i < ubuf_size; i++)
+        av_bprintf(bp, "%02X", ubuf[i]);
+}
+
+
 static int writer_open(WriterContext **wctx, const Writer *writer, const char *args,
                        const struct section *sections, int nb_sections)
 {
-    int ret = 0;
+    int i, ret = 0;
 
-    if (!(*wctx = av_malloc(sizeof(WriterContext)))) {
+    if (!(*wctx = av_mallocz(sizeof(WriterContext)))) {
         ret = AVERROR(ENOMEM);
         goto fail;
     }
@@ -296,15 +406,60 @@ static int writer_open(WriterContext **wctx, const Writer *writer, const char *a
     (*wctx)->sections = sections;
     (*wctx)->nb_sections = nb_sections;
 
+    av_opt_set_defaults(*wctx);
+
     if (writer->priv_class) {
         void *priv_ctx = (*wctx)->priv;
         *((const AVClass **)priv_ctx) = writer->priv_class;
         av_opt_set_defaults(priv_ctx);
+    }
 
-        if (args &&
-            (ret = av_set_options_string(priv_ctx, args, "=", ":")) < 0)
+    /* convert options to dictionary */
+    if (args) {
+        AVDictionary *opts = NULL;
+        AVDictionaryEntry *opt = NULL;
+
+        if ((ret = av_dict_parse_string(&opts, args, "=", ":", 0)) < 0) {
+            av_log(*wctx, AV_LOG_ERROR, "Failed to parse option string '%s' provided to writer context\n", args);
+            av_dict_free(&opts);
             goto fail;
+        }
+
+        while ((opt = av_dict_get(opts, "", opt, AV_DICT_IGNORE_SUFFIX))) {
+            if ((ret = av_opt_set(*wctx, opt->key, opt->value, AV_OPT_SEARCH_CHILDREN)) < 0) {
+                av_log(*wctx, AV_LOG_ERROR, "Failed to set option '%s' with value '%s' provided to writer context\n",
+                       opt->key, opt->value);
+                av_dict_free(&opts);
+                goto fail;
+            }
+        }
+
+        av_dict_free(&opts);
     }
+
+    /* validate replace string */
+    {
+        const uint8_t *p = (*wctx)->string_validation_replacement;
+        const uint8_t *endp = p + strlen(p);
+        while (*p) {
+            const uint8_t *p0 = p;
+            int32_t code;
+            ret = av_utf8_decode(&code, &p, endp, (*wctx)->string_validation_utf8_flags);
+            if (ret < 0) {
+                AVBPrint bp;
+                av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
+                bprint_bytes(&bp, p0, p-p0),
+                    av_log(wctx, AV_LOG_ERROR,
+                           "Invalid UTF8 sequence %s found in string validation replace '%s'\n",
+                           bp.str, (*wctx)->string_validation_replacement);
+                return ret;
+            }
+        }
+    }
+
+    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
+        av_bprint_init(&(*wctx)->section_pbuf[i], 1, AV_BPRINT_SIZE_UNLIMITED);
+
     if ((*wctx)->writer->init)
         ret = (*wctx)->writer->init(*wctx);
     if (ret < 0)
@@ -361,25 +516,106 @@ static inline void writer_print_section_footer(WriterContext *wctx)
 static inline void writer_print_integer(WriterContext *wctx,
                                         const char *key, long long int val)
 {
-    if ((wctx->section[wctx->level]->id != SECTION_ID_FORMAT
-         && wctx->section[wctx->level]->id != SECTION_ID_FORMAT_TAGS) ||
-        !fmt_entries_to_show || av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
+    const struct section *section = wctx->section[wctx->level];
+
+    if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
         wctx->writer->print_integer(wctx, key, val);
         wctx->nb_item[wctx->level]++;
     }
 }
 
-static inline void writer_print_string(WriterContext *wctx,
-                                       const char *key, const char *val, int opt)
+static inline int validate_string(WriterContext *wctx, char **dstp, const char *src)
 {
-    if (opt && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
-        return;
-    if ((wctx->section[wctx->level]->id != SECTION_ID_FORMAT
-         && wctx->section[wctx->level]->id != SECTION_ID_FORMAT_TAGS) ||
-        !fmt_entries_to_show || av_dict_get(fmt_entries_to_show, key, NULL, 0)) {
-        wctx->writer->print_string(wctx, key, val);
+    const uint8_t *p, *endp;
+    AVBPrint dstbuf;
+    int invalid_chars_nb = 0, ret = 0;
+
+    av_bprint_init(&dstbuf, 0, AV_BPRINT_SIZE_UNLIMITED);
+
+    endp = src + strlen(src);
+    for (p = (uint8_t *)src; *p;) {
+        uint32_t code;
+        int invalid = 0;
+        const uint8_t *p0 = p;
+
+        if (av_utf8_decode(&code, &p, endp, wctx->string_validation_utf8_flags) < 0) {
+            AVBPrint bp;
+            av_bprint_init(&bp, 0, AV_BPRINT_SIZE_AUTOMATIC);
+            bprint_bytes(&bp, p0, p-p0);
+            av_log(wctx, AV_LOG_DEBUG,
+                   "Invalid UTF-8 sequence %s found in string '%s'\n", bp.str, src);
+            invalid = 1;
+        }
+
+        if (invalid) {
+            invalid_chars_nb++;
+
+            switch (wctx->string_validation) {
+            case WRITER_STRING_VALIDATION_FAIL:
+                av_log(wctx, AV_LOG_ERROR,
+                       "Invalid UTF-8 sequence found in string '%s'\n", src);
+                ret = AVERROR_INVALIDDATA;
+                goto end;
+                break;
+
+            case WRITER_STRING_VALIDATION_REPLACE:
+                av_bprintf(&dstbuf, "%s", wctx->string_validation_replacement);
+                break;
+            }
+        }
+
+        if (!invalid || wctx->string_validation == WRITER_STRING_VALIDATION_IGNORE)
+            av_bprint_append_data(&dstbuf, p0, p-p0);
+    }
+
+    if (invalid_chars_nb && wctx->string_validation == WRITER_STRING_VALIDATION_REPLACE) {
+        av_log(wctx, AV_LOG_WARNING,
+               "%d invalid UTF-8 sequence(s) found in string '%s', replaced with '%s'\n",
+               invalid_chars_nb, src, wctx->string_validation_replacement);
+    }
+
+end:
+    av_bprint_finalize(&dstbuf, dstp);
+    return ret;
+}
+
+#define PRINT_STRING_OPT      1
+#define PRINT_STRING_VALIDATE 2
+
+static inline int writer_print_string(WriterContext *wctx,
+                                      const char *key, const char *val, int flags)
+{
+    const struct section *section = wctx->section[wctx->level];
+    int ret = 0;
+
+    if ((flags & PRINT_STRING_OPT)
+        && !(wctx->writer->flags & WRITER_FLAG_DISPLAY_OPTIONAL_FIELDS))
+        return 0;
+
+    if (section->show_all_entries || av_dict_get(section->entries_to_show, key, NULL, 0)) {
+        if (flags & PRINT_STRING_VALIDATE) {
+            char *key1 = NULL, *val1 = NULL;
+            ret = validate_string(wctx, &key1, key);
+            if (ret < 0) goto end;
+            ret = validate_string(wctx, &val1, val);
+            if (ret < 0) goto end;
+            wctx->writer->print_string(wctx, key1, val1);
+        end:
+            if (ret < 0) {
+                av_log(wctx, AV_LOG_ERROR,
+                       "Invalid key=value string combination %s=%s in section %s\n",
+                       key, val, section->unique_name);
+            }
+            av_free(key1);
+            av_free(val1);
+        } else {
+            wctx->writer->print_string(wctx, key, val);
+        }
+
         wctx->nb_item[wctx->level]++;
     }
+
+    return ret;
 }
 
 static inline void writer_print_rational(WriterContext *wctx,
@@ -397,7 +633,7 @@ static void writer_print_time(WriterContext *wctx, const char *key,
     char buf[128];
 
     if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
-        writer_print_string(wctx, key, "N/A", 1);
+        writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
     } else {
         double d = ts * av_q2d(*time_base);
         struct unit_value uv;
@@ -411,7 +647,7 @@ static void writer_print_time(WriterContext *wctx, const char *key,
 static void writer_print_ts(WriterContext *wctx, const char *key, int64_t ts, int is_duration)
 {
     if ((!is_duration && ts == AV_NOPTS_VALUE) || (is_duration && ts == 0)) {
-        writer_print_string(wctx, key, "N/A", 1);
+        writer_print_string(wctx, key, "N/A", PRINT_STRING_OPT);
     } else {
         writer_print_integer(wctx, key, ts);
     }
@@ -480,9 +716,9 @@ static const char *name##_get_name(void *ctx)       \
     return #name ;                                  \
 }                                                   \
 static const AVClass name##_class = {               \
-    #name,                                          \
-    name##_get_name,                                \
-    name##_options                                  \
+    .class_name = #name,                            \
+    .item_name  = name##_get_name,                  \
+    .option     = name##_options                    \
 }
 
 /* Default output */
@@ -492,9 +728,9 @@ typedef struct DefaultContext {
     int nokey;
     int noprint_wrappers;
     int nested_section[SECTION_MAX_NB_LEVELS];
-    AVBPrint prefix[SECTION_MAX_NB_LEVELS];
 } DefaultContext;
 
+#undef OFFSET
 #define OFFSET(x) offsetof(DefaultContext, x)
 
 static const AVOption default_options[] = {
@@ -517,25 +753,6 @@ static inline char *upcase_string(char *dst, size_t dst_size, const char *src)
     return dst;
 }
 
-static int default_init(WriterContext *wctx)
-{
-    DefaultContext *def = wctx->priv;
-    int i;
-
-    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
-        av_bprint_init(&def->prefix[i], 1, AV_BPRINT_SIZE_UNLIMITED);
-    return 0;
-}
-
-static void default_uninit(WriterContext *wctx)
-{
-    DefaultContext *def = wctx->priv;
-    int i;
-
-    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
-        av_bprint_finalize(&def->prefix[i], NULL);
-}
-
 static void default_print_section_header(WriterContext *wctx)
 {
     DefaultContext *def = wctx->priv;
@@ -544,11 +761,12 @@ static void default_print_section_header(WriterContext *wctx)
     const struct section *parent_section = wctx->level ?
         wctx->section[wctx->level-1] : NULL;
 
-    av_bprint_clear(&def->prefix[wctx->level]);
+    av_bprint_clear(&wctx->section_pbuf[wctx->level]);
     if (parent_section &&
         !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
         def->nested_section[wctx->level] = 1;
-        av_bprintf(&def->prefix[wctx->level], "%s%s:", def->prefix[wctx->level-1].str,
+        av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
+                   wctx->section_pbuf[wctx->level-1].str,
                    upcase_string(buf, sizeof(buf),
                                  av_x_if_null(section->element_name, section->name)));
     }
@@ -578,7 +796,7 @@ static void default_print_str(WriterContext *wctx, const char *key, const char *
     DefaultContext *def = wctx->priv;
 
     if (!def->nokey)
-        printf("%s%s=", def->prefix[wctx->level].str, key);
+        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
     printf("%s\n", value);
 }
 
@@ -587,15 +805,13 @@ static void default_print_int(WriterContext *wctx, const char *key, long long in
     DefaultContext *def = wctx->priv;
 
     if (!def->nokey)
-        printf("%s%s=", def->prefix[wctx->level].str, key);
+        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
     printf("%lld\n", value);
 }
 
 static const Writer default_writer = {
     .name                  = "default",
     .priv_size             = sizeof(DefaultContext),
-    .init                  = default_init,
-    .uninit                = default_uninit,
     .print_section_header  = default_print_section_header,
     .print_section_footer  = default_print_section_footer,
     .print_integer         = default_print_int,
@@ -638,15 +854,15 @@ static const char *csv_escape_str(AVBPrint *dst, const char *src, const char sep
     int needs_quoting = !!src[strcspn(src, meta_chars)];
 
     if (needs_quoting)
-        av_bprint_chars(dst, '\"', 1);
+        av_bprint_chars(dst, '"', 1);
 
     for (; *src; src++) {
         if (*src == '"')
-            av_bprint_chars(dst, '\"', 1);
+            av_bprint_chars(dst, '"', 1);
         av_bprint_chars(dst, *src, 1);
     }
     if (needs_quoting)
-        av_bprint_chars(dst, '\"', 1);
+        av_bprint_chars(dst, '"', 1);
     return dst->str;
 }
 
@@ -664,7 +880,8 @@ typedef struct CompactContext {
     char *escape_mode_str;
     const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
     int nested_section[SECTION_MAX_NB_LEVELS];
-    AVBPrint prefix[SECTION_MAX_NB_LEVELS];
+    int has_nested_elems[SECTION_MAX_NB_LEVELS];
+    int terminate_line[SECTION_MAX_NB_LEVELS];
 } CompactContext;
 
 #undef OFFSET
@@ -687,7 +904,6 @@ DEFINE_WRITER_CLASS(compact);
 static av_cold int compact_init(WriterContext *wctx)
 {
     CompactContext *compact = wctx->priv;
-    int i;
 
     if (strlen(compact->item_sep_str) != 1) {
         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
@@ -704,38 +920,37 @@ static av_cold int compact_init(WriterContext *wctx)
         return AVERROR(EINVAL);
     }
 
-    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
-        av_bprint_init(&compact->prefix[i], 1, AV_BPRINT_SIZE_UNLIMITED);
     return 0;
 }
 
-static void compact_uninit(WriterContext *wctx)
-{
-    CompactContext *compact = wctx->priv;
-    int i;
-
-    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
-        av_bprint_finalize(&compact->prefix[i], NULL);
-}
-
 static void compact_print_section_header(WriterContext *wctx)
 {
     CompactContext *compact = wctx->priv;
     const struct section *section = wctx->section[wctx->level];
     const struct section *parent_section = wctx->level ?
         wctx->section[wctx->level-1] : NULL;
+    compact->terminate_line[wctx->level] = 1;
+    compact->has_nested_elems[wctx->level] = 0;
 
-    av_bprint_clear(&compact->prefix[wctx->level]);
-    if (parent_section &&
+    av_bprint_clear(&wctx->section_pbuf[wctx->level]);
+    if (!(section->flags & SECTION_FLAG_IS_ARRAY) && parent_section &&
         !(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
         compact->nested_section[wctx->level] = 1;
-        av_bprintf(&compact->prefix[wctx->level], "%s%s:",
-                   compact->prefix[wctx->level-1].str,
+        compact->has_nested_elems[wctx->level-1] = 1;
+        av_bprintf(&wctx->section_pbuf[wctx->level], "%s%s:",
+                   wctx->section_pbuf[wctx->level-1].str,
                    (char *)av_x_if_null(section->element_name, section->name));
         wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];
-    } else if (compact->print_section &&
-        !(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
-       printf("%s%c", section->name, compact->item_sep);
+    } else {
+        if (parent_section && compact->has_nested_elems[wctx->level-1] &&
+            (section->flags & SECTION_FLAG_IS_ARRAY)) {
+            compact->terminate_line[wctx->level-1] = 0;
+            printf("\n");
+        }
+        if (compact->print_section &&
+            !(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
+            printf("%s%c", section->name, compact->item_sep);
+    }
 }
 
 static void compact_print_section_footer(WriterContext *wctx)
@@ -743,6 +958,7 @@ static void compact_print_section_footer(WriterContext *wctx)
     CompactContext *compact = wctx->priv;
 
     if (!compact->nested_section[wctx->level] &&
+        compact->terminate_line[wctx->level] &&
         !(wctx->section[wctx->level]->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
         printf("\n");
 }
@@ -754,7 +970,7 @@ static void compact_print_str(WriterContext *wctx, const char *key, const char *
 
     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
     if (!compact->nokey)
-        printf("%s%s=", compact->prefix[wctx->level].str, key);
+        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
     printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
     av_bprint_finalize(&buf, NULL);
@@ -766,7 +982,7 @@ static void compact_print_int(WriterContext *wctx, const char *key, long long in
 
     if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
     if (!compact->nokey)
-        printf("%s%s=", compact->prefix[wctx->level].str, key);
+        printf("%s%s=", wctx->section_pbuf[wctx->level].str, key);
     printf("%lld", value);
 }
 
@@ -774,7 +990,6 @@ static const Writer compact_writer = {
     .name                 = "compact",
     .priv_size            = sizeof(CompactContext),
     .init                 = compact_init,
-    .uninit               = compact_uninit,
     .print_section_header = compact_print_section_header,
     .print_section_footer = compact_print_section_footer,
     .print_integer        = compact_print_int,
@@ -818,7 +1033,6 @@ static const Writer csv_writer = {
 
 typedef struct FlatContext {
     const AVClass *class;
-    AVBPrint section_header[SECTION_MAX_NB_LEVELS];
     const char *sep_str;
     char sep;
     int hierarchical;
@@ -840,7 +1054,6 @@ DEFINE_WRITER_CLASS(flat);
 static av_cold int flat_init(WriterContext *wctx)
 {
     FlatContext *flat = wctx->priv;
-    int i;
 
     if (strlen(flat->sep_str) != 1) {
         av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
@@ -849,20 +1062,9 @@ static av_cold int flat_init(WriterContext *wctx)
     }
     flat->sep = flat->sep_str[0];
 
-    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
-        av_bprint_init(&flat->section_header[i], 1, AV_BPRINT_SIZE_UNLIMITED);
     return 0;
 }
 
-static void flat_uninit(WriterContext *wctx)
-{
-    FlatContext *flat = wctx->priv;
-    int i;
-
-    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
-        av_bprint_finalize(&flat->section_header[i], NULL);
-}
-
 static const char *flat_escape_key_str(AVBPrint *dst, const char *src, const char sep)
 {
     const char *p;
@@ -899,7 +1101,7 @@ static const char *flat_escape_value_str(AVBPrint *dst, const char *src)
 static void flat_print_section_header(WriterContext *wctx)
 {
     FlatContext *flat = wctx->priv;
-    AVBPrint *buf = &flat->section_header[wctx->level];
+    AVBPrint *buf = &wctx->section_pbuf[wctx->level];
     const struct section *section = wctx->section[wctx->level];
     const struct section *parent_section = wctx->level ?
         wctx->section[wctx->level-1] : NULL;
@@ -908,7 +1110,7 @@ static void flat_print_section_header(WriterContext *wctx)
     av_bprint_clear(buf);
     if (!parent_section)
         return;
-    av_bprintf(buf, "%s", flat->section_header[wctx->level-1].str);
+    av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
 
     if (flat->hierarchical ||
         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
@@ -924,8 +1126,7 @@ static void flat_print_section_header(WriterContext *wctx)
 
 static void flat_print_int(WriterContext *wctx, const char *key, long long int value)
 {
-    FlatContext *flat = wctx->priv;
-    printf("%s%s=%lld\n", flat->section_header[wctx->level].str, key, value);
+    printf("%s%s=%lld\n", wctx->section_pbuf[wctx->level].str, key, value);
 }
 
 static void flat_print_str(WriterContext *wctx, const char *key, const char *value)
@@ -933,7 +1134,7 @@ static void flat_print_str(WriterContext *wctx, const char *key, const char *val
     FlatContext *flat = wctx->priv;
     AVBPrint buf;
 
-    printf("%s", flat->section_header[wctx->level].str);
+    printf("%s", wctx->section_pbuf[wctx->level].str);
     av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
     printf("%s=", flat_escape_key_str(&buf, key, flat->sep));
     av_bprint_clear(&buf);
@@ -945,7 +1146,6 @@ static const Writer flat_writer = {
     .name                  = "flat",
     .priv_size             = sizeof(FlatContext),
     .init                  = flat_init,
-    .uninit                = flat_uninit,
     .print_section_header  = flat_print_section_header,
     .print_integer         = flat_print_int,
     .print_string          = flat_print_str,
@@ -958,7 +1158,6 @@ static const Writer flat_writer = {
 typedef struct {
     const AVClass *class;
     int hierarchical;
-    AVBPrint section_header[SECTION_MAX_NB_LEVELS];
 } INIContext;
 
 #undef OFFSET
@@ -972,25 +1171,6 @@ static const AVOption ini_options[] = {
 
 DEFINE_WRITER_CLASS(ini);
 
-static int ini_init(WriterContext *wctx)
-{
-    INIContext *ini = wctx->priv;
-    int i;
-
-    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
-        av_bprint_init(&ini->section_header[i], 1, AV_BPRINT_SIZE_UNLIMITED);
-    return 0;
-}
-
-static void ini_uninit(WriterContext *wctx)
-{
-    INIContext *ini = wctx->priv;
-    int i;
-
-    for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
-        av_bprint_finalize(&ini->section_header[i], NULL);
-}
-
 static char *ini_escape_str(AVBPrint *dst, const char *src)
 {
     int i = 0;
@@ -1021,7 +1201,7 @@ static char *ini_escape_str(AVBPrint *dst, const char *src)
 static void ini_print_section_header(WriterContext *wctx)
 {
     INIContext *ini = wctx->priv;
-    AVBPrint *buf = &ini->section_header[wctx->level];
+    AVBPrint *buf = &wctx->section_pbuf[wctx->level];
     const struct section *section = wctx->section[wctx->level];
     const struct section *parent_section = wctx->level ?
         wctx->section[wctx->level-1] : NULL;
@@ -1035,7 +1215,7 @@ static void ini_print_section_header(WriterContext *wctx)
     if (wctx->nb_item[wctx->level-1])
         printf("\n");
 
-    av_bprintf(buf, "%s", ini->section_header[wctx->level-1].str);
+    av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
     if (ini->hierarchical ||
         !(section->flags & (SECTION_FLAG_IS_ARRAY|SECTION_FLAG_IS_WRAPPER))) {
         av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);
@@ -1070,8 +1250,6 @@ static void ini_print_int(WriterContext *wctx, const char *key, long long int va
 static const Writer ini_writer = {
     .name                  = "ini",
     .priv_size             = sizeof(INIContext),
-    .init                  = ini_init,
-    .uninit                = ini_uninit,
     .print_section_header  = ini_print_section_header,
     .print_integer         = ini_print_int,
     .print_string          = ini_print_str,
@@ -1153,13 +1331,13 @@ static void json_print_section_header(WriterContext *wctx)
         json->indent_level++;
         if (section->flags & SECTION_FLAG_IS_ARRAY) {
             printf("\"%s\": [\n", buf.str);
-        } else if (!(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {
+        } else if (parent_section && !(parent_section->flags & SECTION_FLAG_IS_ARRAY)) {
             printf("\"%s\": {%s", buf.str, json->item_start_end);
         } else {
             printf("{%s", json->item_start_end);
 
             /* this is required so the parser can distinguish between packets and frames */
-            if (parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {
+            if (parent_section && parent_section->id == SECTION_ID_PACKETS_AND_FRAMES) {
                 if (!json->compact)
                     JSON_INDENT();
                 printf("\"type\": \"%s\"%s", section->name, json->item_sep);
@@ -1301,7 +1479,7 @@ static const char *xml_escape_str(AVBPrint *dst, const char *src, void *log_ctx)
         case '&' : av_bprintf(dst, "%s", "&amp;");  break;
         case '<' : av_bprintf(dst, "%s", "&lt;");   break;
         case '>' : av_bprintf(dst, "%s", "&gt;");   break;
-        case '\"': av_bprintf(dst, "%s", "&quot;"); break;
+        case '"' : av_bprintf(dst, "%s", "&quot;"); break;
         case '\'': av_bprintf(dst, "%s", "&apos;"); break;
         default: av_bprint_chars(dst, *p, 1);
         }
@@ -1439,7 +1617,8 @@ static void writer_register_all(void)
 #define print_int(k, v)         writer_print_integer(w, k, v)
 #define print_q(k, v, s)        writer_print_rational(w, k, v, s)
 #define print_str(k, v)         writer_print_string(w, k, v, 0)
-#define print_str_opt(k, v)     writer_print_string(w, k, v, 1)
+#define print_str_opt(k, v)     writer_print_string(w, k, v, PRINT_STRING_OPT)
+#define print_str_validate(k, v) writer_print_string(w, k, v, PRINT_STRING_VALIDATE)
 #define print_time(k, v, tb)    writer_print_time(w, k, v, tb, 0)
 #define print_ts(k, v)          writer_print_ts(w, k, v, 0)
 #define print_duration_time(k, v, tb) writer_print_time(w, k, v, tb, 1)
@@ -1454,16 +1633,30 @@ static void writer_register_all(void)
 #define print_section_header(s) writer_print_section_header(w, s)
 #define print_section_footer(s) writer_print_section_footer(w, s)
 
-static inline void show_tags(WriterContext *wctx, AVDictionary *tags, int section_id)
+#define REALLOCZ_ARRAY_STREAM(ptr, cur_n, new_n)                        \
+{                                                                       \
+    ret = av_reallocp_array(&(ptr), (new_n), sizeof(*(ptr)));           \
+    if (ret < 0)                                                        \
+        goto end;                                                       \
+    memset( (ptr) + (cur_n), 0, ((new_n) - (cur_n)) * sizeof(*(ptr)) ); \
+}
+
+static inline int show_tags(WriterContext *w, AVDictionary *tags, int section_id)
 {
     AVDictionaryEntry *tag = NULL;
+    int ret = 0;
 
     if (!tags)
-        return;
-    writer_print_section_header(wctx, section_id);
-    while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX)))
-        writer_print_string(wctx, tag->key, tag->value, 0);
-    writer_print_section_footer(wctx);
+        return 0;
+    writer_print_section_header(w, section_id);
+
+    while ((tag = av_dict_get(tags, "", tag, AV_DICT_IGNORE_SUFFIX))) {
+        if ((ret = print_str_validate(tag->key, tag->value)) < 0)
+            break;
+    }
+    writer_print_section_footer(w);
+
+    return ret;
 }
 
 static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pkt, int packet_idx)
@@ -1501,6 +1694,29 @@ static void show_packet(WriterContext *w, AVFormatContext *fmt_ctx, AVPacket *pk
     fflush(stdout);
 }
 
+static void show_subtitle(WriterContext *w, AVSubtitle *sub, AVStream *stream,
+                          AVFormatContext *fmt_ctx)
+{
+    AVBPrint pbuf;
+
+    av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
+
+    writer_print_section_header(w, SECTION_ID_SUBTITLE);
+
+    print_str ("media_type",         "subtitle");
+    print_ts  ("pts",                 sub->pts);
+    print_time("pts_time",            sub->pts, &AV_TIME_BASE_Q);
+    print_int ("format",              sub->format);
+    print_int ("start_display_time",  sub->start_display_time);
+    print_int ("end_display_time",    sub->end_display_time);
+    print_int ("num_rects",           sub->num_rects);
+
+    writer_print_section_footer(w);
+
+    av_bprint_finalize(&pbuf, NULL);
+    fflush(stdout);
+}
+
 static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
                        AVFormatContext *fmt_ctx)
 {
@@ -1519,10 +1735,14 @@ static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
     print_time("pkt_pts_time",          frame->pkt_pts, &stream->time_base);
     print_ts  ("pkt_dts",               frame->pkt_dts);
     print_time("pkt_dts_time",          frame->pkt_dts, &stream->time_base);
-    print_duration_ts  ("pkt_duration",      frame->pkt_duration);
-    print_duration_time("pkt_duration_time", frame->pkt_duration, &stream->time_base);
-    if (frame->pkt_pos != -1) print_fmt    ("pkt_pos", "%"PRId64, frame->pkt_pos);
+    print_ts  ("best_effort_timestamp", av_frame_get_best_effort_timestamp(frame));
+    print_time("best_effort_timestamp_time", av_frame_get_best_effort_timestamp(frame), &stream->time_base);
+    print_duration_ts  ("pkt_duration",      av_frame_get_pkt_duration(frame));
+    print_duration_time("pkt_duration_time", av_frame_get_pkt_duration(frame), &stream->time_base);
+    if (av_frame_get_pkt_pos (frame) != -1) print_fmt    ("pkt_pos", "%"PRId64, av_frame_get_pkt_pos(frame));
     else                      print_str_opt("pkt_pos", "N/A");
+    if (av_frame_get_pkt_size(frame) != -1) print_fmt    ("pkt_size", "%d", av_frame_get_pkt_size(frame));
+    else                       print_str_opt("pkt_size", "N/A");
 
     switch (stream->codec->codec_type) {
         AVRational sar;
@@ -1545,7 +1765,6 @@ static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
         print_int("interlaced_frame",       frame->interlaced_frame);
         print_int("top_field_first",        frame->top_field_first);
         print_int("repeat_pict",            frame->repeat_pict);
-        print_int("reference",              frame->reference);
         break;
 
     case AVMEDIA_TYPE_AUDIO:
@@ -1563,7 +1782,8 @@ static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream,
             print_str_opt("channel_layout", "unknown");
         break;
     }
-    show_tags(w, av_frame_get_metadata(frame), SECTION_ID_FRAME_TAGS);
+    if (do_show_frame_tags)
+        show_tags(w, av_frame_get_metadata(frame), SECTION_ID_FRAME_TAGS);
 
     writer_print_section_footer(w);
 
@@ -1576,9 +1796,9 @@ static av_always_inline int process_frame(WriterContext *w,
                                           AVFrame *frame, AVPacket *pkt)
 {
     AVCodecContext *dec_ctx = fmt_ctx->streams[pkt->stream_index]->codec;
+    AVSubtitle sub;
     int ret = 0, got_frame = 0;
 
-    avcodec_get_frame_defaults(frame);
     if (dec_ctx->codec) {
         switch (dec_ctx->codec_type) {
         case AVMEDIA_TYPE_VIDEO:
@@ -1588,6 +1808,10 @@ static av_always_inline int process_frame(WriterContext *w,
         case AVMEDIA_TYPE_AUDIO:
             ret = avcodec_decode_audio4(dec_ctx, frame, &got_frame, pkt);
             break;
+
+        case AVMEDIA_TYPE_SUBTITLE:
+            ret = avcodec_decode_subtitle2(dec_ctx, &sub, &got_frame, pkt);
+            break;
         }
     }
 
@@ -1597,30 +1821,126 @@ static av_always_inline int process_frame(WriterContext *w,
     pkt->data += ret;
     pkt->size -= ret;
     if (got_frame) {
+        int is_sub = (dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE);
         nb_streams_frames[pkt->stream_index]++;
         if (do_show_frames)
-            show_frame(w, frame, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
+            if (is_sub)
+                show_subtitle(w, &sub, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
+            else
+                show_frame(w, frame, fmt_ctx->streams[pkt->stream_index], fmt_ctx);
+        if (is_sub)
+            avsubtitle_free(&sub);
     }
     return got_frame;
 }
 
-static void read_packets(WriterContext *w, AVFormatContext *fmt_ctx)
+static void log_read_interval(const ReadInterval *interval, void *log_ctx, int log_level)
+{
+    av_log(log_ctx, log_level, "id:%d", interval->id);
+
+    if (interval->has_start) {
+        av_log(log_ctx, log_level, " start:%s%s", interval->start_is_offset ? "+" : "",
+               av_ts2timestr(interval->start, &AV_TIME_BASE_Q));
+    } else {
+        av_log(log_ctx, log_level, " start:N/A");
+    }
+
+    if (interval->has_end) {
+        av_log(log_ctx, log_level, " end:%s", interval->end_is_offset ? "+" : "");
+        if (interval->duration_frames)
+            av_log(log_ctx, log_level, "#%"PRId64, interval->end);
+        else
+            av_log(log_ctx, log_level, "%s", av_ts2timestr(interval->end, &AV_TIME_BASE_Q));
+    } else {
+        av_log(log_ctx, log_level, " end:N/A");
+    }
+
+    av_log(log_ctx, log_level, "\n");
+}
+
+static int read_interval_packets(WriterContext *w, AVFormatContext *fmt_ctx,
+                                 const ReadInterval *interval, int64_t *cur_ts)
 {
     AVPacket pkt, pkt1;
-    AVFrame frame;
-    int i = 0;
+    AVFrame *frame = NULL;
+    int ret = 0, i = 0, frame_count = 0;
+    int64_t start = -INT64_MAX, end = interval->end;
+    int has_start = 0, has_end = interval->has_end && !interval->end_is_offset;
 
     av_init_packet(&pkt);
 
+    av_log(NULL, AV_LOG_VERBOSE, "Processing read interval ");
+    log_read_interval(interval, NULL, AV_LOG_VERBOSE);
+
+    if (interval->has_start) {
+        int64_t target;
+        if (interval->start_is_offset) {
+            if (*cur_ts == AV_NOPTS_VALUE) {
+                av_log(NULL, AV_LOG_ERROR,
+                       "Could not seek to relative position since current "
+                       "timestamp is not defined\n");
+                ret = AVERROR(EINVAL);
+                goto end;
+            }
+            target = *cur_ts + interval->start;
+        } else {
+            target = interval->start;
+        }
+
+        av_log(NULL, AV_LOG_VERBOSE, "Seeking to read interval start point %s\n",
+               av_ts2timestr(target, &AV_TIME_BASE_Q));
+        if ((ret = avformat_seek_file(fmt_ctx, -1, -INT64_MAX, target, INT64_MAX, 0)) < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Could not seek to position %"PRId64": %s\n",
+                   interval->start, av_err2str(ret));
+            goto end;
+        }
+    }
+
+    frame = av_frame_alloc();
+    if (!frame) {
+        ret = AVERROR(ENOMEM);
+        goto end;
+    }
     while (!av_read_frame(fmt_ctx, &pkt)) {
-        if (do_read_packets) {
-            if (do_show_packets)
-                show_packet(w, fmt_ctx, &pkt, i++);
-            nb_streams_packets[pkt.stream_index]++;
+        if (fmt_ctx->nb_streams > nb_streams) {
+            REALLOCZ_ARRAY_STREAM(nb_streams_frames,  nb_streams, fmt_ctx->nb_streams);
+            REALLOCZ_ARRAY_STREAM(nb_streams_packets, nb_streams, fmt_ctx->nb_streams);
+            REALLOCZ_ARRAY_STREAM(selected_streams,   nb_streams, fmt_ctx->nb_streams);
+            nb_streams = fmt_ctx->nb_streams;
         }
-        if (do_read_frames) {
-            pkt1 = pkt;
-            while (pkt1.size && process_frame(w, fmt_ctx, &frame, &pkt1) > 0);
+        if (selected_streams[pkt.stream_index]) {
+            AVRational tb = fmt_ctx->streams[pkt.stream_index]->time_base;
+
+            if (pkt.pts != AV_NOPTS_VALUE)
+                *cur_ts = av_rescale_q(pkt.pts, tb, AV_TIME_BASE_Q);
+
+            if (!has_start && *cur_ts != AV_NOPTS_VALUE) {
+                start = *cur_ts;
+                has_start = 1;
+            }
+
+            if (has_start && !has_end && interval->end_is_offset) {
+                end = start + interval->end;
+                has_end = 1;
+            }
+
+            if (interval->end_is_offset && interval->duration_frames) {
+                if (frame_count >= interval->end)
+                    break;
+            } else if (has_end && *cur_ts != AV_NOPTS_VALUE && *cur_ts >= end) {
+                break;
+            }
+
+            frame_count++;
+            if (do_read_packets) {
+                if (do_show_packets)
+                    show_packet(w, fmt_ctx, &pkt, i++);
+                nb_streams_packets[pkt.stream_index]++;
+            }
+            if (do_read_frames) {
+                pkt1 = pkt;
+                while (pkt1.size && process_frame(w, fmt_ctx, frame, &pkt1) > 0);
+            }
         }
         av_free_packet(&pkt);
     }
@@ -1631,11 +1951,38 @@ static void read_packets(WriterContext *w, AVFormatContext *fmt_ctx)
     for (i = 0; i < fmt_ctx->nb_streams; i++) {
         pkt.stream_index = i;
         if (do_read_frames)
-            while (process_frame(w, fmt_ctx, &frame, &pkt) > 0);
+            while (process_frame(w, fmt_ctx, frame, &pkt) > 0);
     }
+
+end:
+    av_frame_free(&frame);
+    if (ret < 0) {
+        av_log(NULL, AV_LOG_ERROR, "Could not read packets in interval ");
+        log_read_interval(interval, NULL, AV_LOG_ERROR);
+    }
+    return ret;
+}
+
+static int read_packets(WriterContext *w, AVFormatContext *fmt_ctx)
+{
+    int i, ret = 0;
+    int64_t cur_ts = fmt_ctx->start_time;
+
+    if (read_intervals_nb == 0) {
+        ReadInterval interval = (ReadInterval) { .has_start = 0, .has_end = 0 };
+        ret = read_interval_packets(w, fmt_ctx, &interval, &cur_ts);
+    } else {
+        for (i = 0; i < read_intervals_nb; i++) {
+            ret = read_interval_packets(w, fmt_ctx, &read_intervals[i], &cur_ts);
+            if (ret < 0)
+                break;
+        }
+    }
+
+    return ret;
 }
 
-static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx)
+static int show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_idx, int in_program)
 {
     AVStream *stream = fmt_ctx->streams[stream_idx];
     AVCodecContext *dec_ctx;
@@ -1644,10 +1991,12 @@ static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_i
     const char *s;
     AVRational sar, dar;
     AVBPrint pbuf;
+    const AVCodecDescriptor *cd;
+    int ret = 0;
 
     av_bprint_init(&pbuf, 1, AV_BPRINT_SIZE_UNLIMITED);
 
-    writer_print_section_header(w, SECTION_ID_STREAM);
+    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM);
 
     print_int("index", stream->index);
 
@@ -1660,6 +2009,12 @@ static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_i
                 if (dec->long_name) print_str    ("codec_long_name", dec->long_name);
                 else                print_str_opt("codec_long_name", "unknown");
             }
+        } else if ((cd = avcodec_descriptor_get(stream->codec->codec_id))) {
+            print_str_opt("codec_name", cd->name);
+            if (!do_bitexact) {
+                print_str_opt("codec_long_name",
+                              cd->long_name ? cd->long_name : "unknown");
+            }
         } else {
             print_str_opt("codec_name", "unknown");
             if (!do_bitexact) {
@@ -1682,10 +2037,6 @@ static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_i
         print_str("codec_tag_string",    val_str);
         print_fmt("codec_tag", "0x%04x", dec_ctx->codec_tag);
 
-        /* Print useful disposition */
-        print_int("default", !!(stream->disposition & AV_DISPOSITION_DEFAULT));
-        print_int("forced", !!(stream->disposition & AV_DISPOSITION_FORCED));
-
         switch (dec_ctx->codec_type) {
         case AVMEDIA_TYPE_VIDEO:
             print_int("width",        dec_ctx->width);
@@ -1707,6 +2058,13 @@ static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_i
             if (s) print_str    ("pix_fmt", s);
             else   print_str_opt("pix_fmt", "unknown");
             print_int("level",   dec_ctx->level);
+            if (dec_ctx->color_range != AVCOL_RANGE_UNSPECIFIED)
+                print_str    ("color_range", dec_ctx->color_range == AVCOL_RANGE_MPEG ? "tv": "pc");
+            else
+                print_str_opt("color_range", "N/A");
+            s = av_get_colorspace_name(dec_ctx->colorspace);
+            if (s) print_str    ("color_space", s);
+            else   print_str_opt("color_space", "unknown");
             if (dec_ctx->timecode_frame_start >= 0) {
                 char tcbuf[AV_TIMECODE_STR_SIZE];
                 av_timecode_make_mpeg_tc_string(tcbuf, dec_ctx->timecode_frame_start);
@@ -1714,8 +2072,6 @@ static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_i
             } else {
                 print_str_opt("timecode", "N/A");
             }
-            print_int("attached_pic",
-                      !!(stream->disposition & AV_DISPOSITION_ATTACHED_PIC));
             break;
 
         case AVMEDIA_TYPE_AUDIO:
@@ -1724,8 +2080,28 @@ static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_i
             else   print_str_opt("sample_fmt", "unknown");
             print_val("sample_rate",     dec_ctx->sample_rate, unit_hertz_str);
             print_int("channels",        dec_ctx->channels);
+
+            if (dec_ctx->channel_layout) {
+                av_bprint_clear(&pbuf);
+                av_bprint_channel_layout(&pbuf, dec_ctx->channels, dec_ctx->channel_layout);
+                print_str    ("channel_layout", pbuf.str);
+            } else {
+                print_str_opt("channel_layout", "unknown");
+            }
+
             print_int("bits_per_sample", av_get_bits_per_sample(dec_ctx->codec_id));
             break;
+
+        case AVMEDIA_TYPE_SUBTITLE:
+            if (dec_ctx->width)
+                print_int("width",       dec_ctx->width);
+            else
+                print_str_opt("width",   "N/A");
+            if (dec_ctx->height)
+                print_int("height",      dec_ctx->height);
+            else
+                print_str_opt("height",  "N/A");
+            break;
         }
     } else {
         print_str_opt("codec_type", "unknown");
@@ -1753,6 +2129,8 @@ static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_i
     print_time("duration",    stream->duration, &stream->time_base);
     if (dec_ctx->bit_rate > 0) print_val    ("bit_rate", dec_ctx->bit_rate, unit_bit_per_second_str);
     else                       print_str_opt("bit_rate", "N/A");
+    if (dec_ctx->rc_max_rate > 0) print_val ("max_bit_rate", dec_ctx->rc_max_rate, unit_bit_per_second_str);
+    else                       print_str_opt("max_bit_rate", "N/A");
     if (stream->nb_frames) print_fmt    ("nb_frames", "%"PRId64, stream->nb_frames);
     else                   print_str_opt("nb_frames", "N/A");
     if (nb_streams_frames[stream_idx])  print_fmt    ("nb_read_frames", "%"PRIu64, nb_streams_frames[stream_idx]);
@@ -1762,30 +2140,139 @@ static void show_stream(WriterContext *w, AVFormatContext *fmt_ctx, int stream_i
     if (do_show_data)
         writer_print_data(w, "extradata", dec_ctx->extradata,
                                           dec_ctx->extradata_size);
-    show_tags(w, stream->metadata, SECTION_ID_STREAM_TAGS);
+
+    /* Print disposition information */
+#define PRINT_DISPOSITION(flagname, name) do {                                \
+        print_int(name, !!(stream->disposition & AV_DISPOSITION_##flagname)); \
+    } while (0)
+
+    if (do_show_stream_disposition) {
+    writer_print_section_header(w, in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION);
+    PRINT_DISPOSITION(DEFAULT,          "default");
+    PRINT_DISPOSITION(DUB,              "dub");
+    PRINT_DISPOSITION(ORIGINAL,         "original");
+    PRINT_DISPOSITION(COMMENT,          "comment");
+    PRINT_DISPOSITION(LYRICS,           "lyrics");
+    PRINT_DISPOSITION(KARAOKE,          "karaoke");
+    PRINT_DISPOSITION(FORCED,           "forced");
+    PRINT_DISPOSITION(HEARING_IMPAIRED, "hearing_impaired");
+    PRINT_DISPOSITION(VISUAL_IMPAIRED,  "visual_impaired");
+    PRINT_DISPOSITION(CLEAN_EFFECTS,    "clean_effects");
+    PRINT_DISPOSITION(ATTACHED_PIC,     "attached_pic");
+    writer_print_section_footer(w);
+    }
+
+    if (do_show_stream_tags)
+        ret = show_tags(w, stream->metadata, in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS);
 
     writer_print_section_footer(w);
     av_bprint_finalize(&pbuf, NULL);
     fflush(stdout);
+
+    return ret;
 }
 
-static void show_streams(WriterContext *w, AVFormatContext *fmt_ctx)
+static int show_streams(WriterContext *w, AVFormatContext *fmt_ctx)
 {
-    int i;
+    int i, ret = 0;
+
     writer_print_section_header(w, SECTION_ID_STREAMS);
     for (i = 0; i < fmt_ctx->nb_streams; i++)
-        show_stream(w, fmt_ctx, i);
+        if (selected_streams[i]) {
+            ret = show_stream(w, fmt_ctx, i, 0);
+            if (ret < 0)
+                break;
+        }
+    writer_print_section_footer(w);
+
+    return ret;
+}
+
+static int show_program(WriterContext *w, AVFormatContext *fmt_ctx, AVProgram *program)
+{
+    int i, ret = 0;
+
+    writer_print_section_header(w, SECTION_ID_PROGRAM);
+    print_int("program_id", program->id);
+    print_int("program_num", program->program_num);
+    print_int("nb_streams", program->nb_stream_indexes);
+    print_int("pmt_pid", program->pmt_pid);
+    print_int("pcr_pid", program->pcr_pid);
+    print_ts("start_pts", program->start_time);
+    print_time("start_time", program->start_time, &AV_TIME_BASE_Q);
+    print_ts("end_pts", program->end_time);
+    print_time("end_time", program->end_time, &AV_TIME_BASE_Q);
+    if (do_show_program_tags)
+        ret = show_tags(w, program->metadata, SECTION_ID_PROGRAM_TAGS);
+    if (ret < 0)
+        goto end;
+
+    writer_print_section_header(w, SECTION_ID_PROGRAM_STREAMS);
+    for (i = 0; i < program->nb_stream_indexes; i++) {
+        if (selected_streams[program->stream_index[i]]) {
+            ret = show_stream(w, fmt_ctx, program->stream_index[i], 1);
+            if (ret < 0)
+                break;
+        }
+    }
+    writer_print_section_footer(w);
+
+end:
+    writer_print_section_footer(w);
+    return ret;
+}
+
+static int show_programs(WriterContext *w, AVFormatContext *fmt_ctx)
+{
+    int i, ret = 0;
+
+    writer_print_section_header(w, SECTION_ID_PROGRAMS);
+    for (i = 0; i < fmt_ctx->nb_programs; i++) {
+        AVProgram *program = fmt_ctx->programs[i];
+        if (!program)
+            continue;
+        ret = show_program(w, fmt_ctx, program);
+        if (ret < 0)
+            break;
+    }
+    writer_print_section_footer(w);
+    return ret;
+}
+
+static int show_chapters(WriterContext *w, AVFormatContext *fmt_ctx)
+{
+    int i, ret = 0;
+
+    writer_print_section_header(w, SECTION_ID_CHAPTERS);
+    for (i = 0; i < fmt_ctx->nb_chapters; i++) {
+        AVChapter *chapter = fmt_ctx->chapters[i];
+
+        writer_print_section_header(w, SECTION_ID_CHAPTER);
+        print_int("id", chapter->id);
+        print_q  ("time_base", chapter->time_base, '/');
+        print_int("start", chapter->start);
+        print_time("start_time", chapter->start, &chapter->time_base);
+        print_int("end", chapter->end);
+        print_time("end_time", chapter->end, &chapter->time_base);
+        if (do_show_chapter_tags)
+            ret = show_tags(w, chapter->metadata, SECTION_ID_CHAPTER_TAGS);
+        writer_print_section_footer(w);
+    }
     writer_print_section_footer(w);
+
+    return ret;
 }
 
-static void show_format(WriterContext *w, AVFormatContext *fmt_ctx)
+static int show_format(WriterContext *w, AVFormatContext *fmt_ctx)
 {
     char val_str[128];
     int64_t size = fmt_ctx->pb ? avio_size(fmt_ctx->pb) : -1;
+    int ret = 0;
 
     writer_print_section_header(w, SECTION_ID_FORMAT);
-    print_str("filename",         fmt_ctx->filename);
+    print_str_validate("filename", fmt_ctx->filename);
     print_int("nb_streams",       fmt_ctx->nb_streams);
+    print_int("nb_programs",      fmt_ctx->nb_programs);
     print_str("format_name",      fmt_ctx->iformat->name);
     if (!do_bitexact) {
         if (fmt_ctx->iformat->long_name) print_str    ("format_long_name", fmt_ctx->iformat->long_name);
@@ -1797,10 +2284,13 @@ static void show_format(WriterContext *w, AVFormatContext *fmt_ctx)
     else           print_str_opt("size", "N/A");
     if (fmt_ctx->bit_rate > 0) print_val    ("bit_rate", fmt_ctx->bit_rate, unit_bit_per_second_str);
     else                       print_str_opt("bit_rate", "N/A");
-    show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);
+    print_int("probe_score", av_format_get_probe_score(fmt_ctx));
+    if (do_show_format_tags)
+        ret = show_tags(w, fmt_ctx->metadata, SECTION_ID_FORMAT_TAGS);
 
     writer_print_section_footer(w);
     fflush(stdout);
+    return ret;
 }
 
 static void show_error(WriterContext *w, int err)
@@ -1819,9 +2309,10 @@ static void show_error(WriterContext *w, int err)
 
 static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
 {
-    int err, i;
+    int err, i, orig_nb_streams;
     AVFormatContext *fmt_ctx = NULL;
     AVDictionaryEntry *t;
+    AVDictionary **opts;
 
     if ((err = avformat_open_input(&fmt_ctx, filename,
                                    iformat, &format_opts)) < 0) {
@@ -1833,12 +2324,17 @@ static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
         return AVERROR_OPTION_NOT_FOUND;
     }
 
-
     /* fill the streams in the format context */
-    if ((err = avformat_find_stream_info(fmt_ctx, NULL)) < 0) {
+    opts = setup_find_stream_info_opts(fmt_ctx, codec_opts);
+    orig_nb_streams = fmt_ctx->nb_streams;
+
+    if ((err = avformat_find_stream_info(fmt_ctx, opts)) < 0) {
         print_error(filename, err);
         return err;
     }
+    for (i = 0; i < orig_nb_streams; i++)
+        av_dict_free(&opts[i]);
+    av_freep(&opts);
 
     av_dump_format(fmt_ctx, 0, filename, 0);
 
@@ -1848,16 +2344,25 @@ static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
         AVCodec *codec;
 
         if (stream->codec->codec_id == AV_CODEC_ID_PROBE) {
-            av_log(NULL, AV_LOG_ERROR,
+            av_log(NULL, AV_LOG_WARNING,
                    "Failed to probe codec for input stream %d\n",
                     stream->index);
         } else if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
-            av_log(NULL, AV_LOG_ERROR,
+            av_log(NULL, AV_LOG_WARNING,
                     "Unsupported codec with id %d for input stream %d\n",
                     stream->codec->codec_id, stream->index);
-        } else if (avcodec_open2(stream->codec, codec, NULL) < 0) {
-            av_log(NULL, AV_LOG_ERROR, "Error while opening codec for input stream %d\n",
-                   stream->index);
+        } else {
+            AVDictionary *opts = filter_codec_opts(codec_opts, stream->codec->codec_id,
+                                                   fmt_ctx, stream, codec);
+            if (avcodec_open2(stream->codec, codec, &opts) < 0) {
+                av_log(NULL, AV_LOG_WARNING, "Could not open codec for input stream %d\n",
+                       stream->index);
+            }
+            if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
+                av_log(NULL, AV_LOG_ERROR, "Option %s for input stream %d not found\n",
+                       t->key, stream->index);
+                return AVERROR_OPTION_NOT_FOUND;
+            }
         }
     }
 
@@ -1881,39 +2386,77 @@ static void close_input_file(AVFormatContext **ctx_ptr)
 static int probe_file(WriterContext *wctx, const char *filename)
 {
     AVFormatContext *fmt_ctx;
-    int ret;
+    int ret, i;
     int section_id;
 
     do_read_frames = do_show_frames || do_count_frames;
     do_read_packets = do_show_packets || do_count_packets;
 
     ret = open_input_file(&fmt_ctx, filename);
-    if (ret >= 0) {
-        nb_streams_frames  = av_calloc(fmt_ctx->nb_streams, sizeof(*nb_streams_frames));
-        nb_streams_packets = av_calloc(fmt_ctx->nb_streams, sizeof(*nb_streams_packets));
-        if (do_read_frames || do_read_packets) {
-            if (do_show_frames && do_show_packets &&
-                wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
-                section_id = SECTION_ID_PACKETS_AND_FRAMES;
-            else if (do_show_packets && !do_show_frames)
-                section_id = SECTION_ID_PACKETS;
-            else // (!do_show_packets && do_show_frames)
-                section_id = SECTION_ID_FRAMES;
-            if (do_show_frames || do_show_packets)
-                writer_print_section_header(wctx, section_id);
-            read_packets(wctx, fmt_ctx);
-            if (do_show_frames || do_show_packets)
-                writer_print_section_footer(wctx);
+    if (ret < 0)
+        return ret;
+
+#define CHECK_END if (ret < 0) goto end
+
+    nb_streams = fmt_ctx->nb_streams;
+    REALLOCZ_ARRAY_STREAM(nb_streams_frames,0,fmt_ctx->nb_streams);
+    REALLOCZ_ARRAY_STREAM(nb_streams_packets,0,fmt_ctx->nb_streams);
+    REALLOCZ_ARRAY_STREAM(selected_streams,0,fmt_ctx->nb_streams);
+
+    for (i = 0; i < fmt_ctx->nb_streams; i++) {
+        if (stream_specifier) {
+            ret = avformat_match_stream_specifier(fmt_ctx,
+                                                  fmt_ctx->streams[i],
+                                                  stream_specifier);
+            CHECK_END;
+            else
+                selected_streams[i] = ret;
+            ret = 0;
+        } else {
+            selected_streams[i] = 1;
         }
-        if (do_show_streams)
-            show_streams(wctx, fmt_ctx);
-        if (do_show_format)
-            show_format(wctx, fmt_ctx);
+    }
+
+    if (do_read_frames || do_read_packets) {
+        if (do_show_frames && do_show_packets &&
+            wctx->writer->flags & WRITER_FLAG_PUT_PACKETS_AND_FRAMES_IN_SAME_CHAPTER)
+            section_id = SECTION_ID_PACKETS_AND_FRAMES;
+        else if (do_show_packets && !do_show_frames)
+            section_id = SECTION_ID_PACKETS;
+        else // (!do_show_packets && do_show_frames)
+            section_id = SECTION_ID_FRAMES;
+        if (do_show_frames || do_show_packets)
+            writer_print_section_header(wctx, section_id);
+        ret = read_packets(wctx, fmt_ctx);
+        if (do_show_frames || do_show_packets)
+            writer_print_section_footer(wctx);
+        CHECK_END;
+    }
 
-        close_input_file(&fmt_ctx);
-        av_freep(&nb_streams_frames);
-        av_freep(&nb_streams_packets);
+    if (do_show_programs) {
+        ret = show_programs(wctx, fmt_ctx);
+        CHECK_END;
+    }
+
+    if (do_show_streams) {
+        ret = show_streams(wctx, fmt_ctx);
+        CHECK_END;
+    }
+    if (do_show_chapters) {
+        ret = show_chapters(wctx, fmt_ctx);
+        CHECK_END;
+    }
+    if (do_show_format) {
+        ret = show_format(wctx, fmt_ctx);
+        CHECK_END;
     }
+
+end:
+    close_input_file(&fmt_ctx);
+    av_freep(&nb_streams_frames);
+    av_freep(&nb_streams_packets);
+    av_freep(&selected_streams);
+
     return ret;
 }
 
@@ -1932,7 +2475,7 @@ static void ffprobe_show_program_version(WriterContext *w)
     writer_print_section_header(w, SECTION_ID_PROGRAM_VERSION);
     print_str("version", FFMPEG_VERSION);
     print_fmt("copyright", "Copyright (c) %d-%d the FFmpeg developers",
-              program_birth_year, this_year);
+              program_birth_year, CONFIG_THIS_YEAR);
     print_str("build_date", __DATE__);
     print_str("build_time", __TIME__);
     print_str("compiler_ident", CC_IDENT);
@@ -1981,11 +2524,101 @@ static int opt_format(void *optctx, const char *opt, const char *arg)
     return 0;
 }
 
+static inline void mark_section_show_entries(SectionID section_id,
+                                             int show_all_entries, AVDictionary *entries)
+{
+    struct section *section = &sections[section_id];
+
+    section->show_all_entries = show_all_entries;
+    if (show_all_entries) {
+        SectionID *id;
+        for (id = section->children_ids; *id != -1; id++)
+            mark_section_show_entries(*id, show_all_entries, entries);
+    } else {
+        av_dict_copy(&section->entries_to_show, entries, 0);
+    }
+}
+
+static int match_section(const char *section_name,
+                         int show_all_entries, AVDictionary *entries)
+{
+    int i, ret = 0;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++) {
+        const struct section *section = &sections[i];
+        if (!strcmp(section_name, section->name) ||
+            (section->unique_name && !strcmp(section_name, section->unique_name))) {
+            av_log(NULL, AV_LOG_DEBUG,
+                   "'%s' matches section with unique name '%s'\n", section_name,
+                   (char *)av_x_if_null(section->unique_name, section->name));
+            ret++;
+            mark_section_show_entries(section->id, show_all_entries, entries);
+        }
+    }
+    return ret;
+}
+
+static int opt_show_entries(void *optctx, const char *opt, const char *arg)
+{
+    const char *p = arg;
+    int ret = 0;
+
+    while (*p) {
+        AVDictionary *entries = NULL;
+        char *section_name = av_get_token(&p, "=:");
+        int show_all_entries = 0;
+
+        if (!section_name) {
+            av_log(NULL, AV_LOG_ERROR,
+                   "Missing section name for option '%s'\n", opt);
+            return AVERROR(EINVAL);
+        }
+
+        if (*p == '=') {
+            p++;
+            while (*p && *p != ':') {
+                char *entry = av_get_token(&p, ",:");
+                if (!entry)
+                    break;
+                av_log(NULL, AV_LOG_VERBOSE,
+                       "Adding '%s' to the entries to show in section '%s'\n",
+                       entry, section_name);
+                av_dict_set(&entries, entry, "", AV_DICT_DONT_STRDUP_KEY);
+                if (*p == ',')
+                    p++;
+            }
+        } else {
+            show_all_entries = 1;
+        }
+
+        ret = match_section(section_name, show_all_entries, entries);
+        if (ret == 0) {
+            av_log(NULL, AV_LOG_ERROR, "No match for section '%s'\n", section_name);
+            ret = AVERROR(EINVAL);
+        }
+        av_dict_free(&entries);
+        av_free(section_name);
+
+        if (ret <= 0)
+            break;
+        if (*p)
+            p++;
+    }
+
+    return ret;
+}
+
 static int opt_show_format_entry(void *optctx, const char *opt, const char *arg)
 {
-    do_show_format = 1;
-    av_dict_set(&fmt_entries_to_show, arg, "", 0);
-    return 0;
+    char *buf = av_asprintf("format=%s", arg);
+    int ret;
+
+    av_log(NULL, AV_LOG_WARNING,
+           "Option '%s' is deprecated, use '-show_entries format=%s' instead\n",
+           opt, arg);
+    ret = opt_show_entries(optctx, opt, buf);
+    av_free(buf);
+    return ret;
 }
 
 static void opt_input_file(void *optctx, const char *arg)
@@ -1994,7 +2627,7 @@ static void opt_input_file(void *optctx, const char *arg)
         av_log(NULL, AV_LOG_ERROR,
                 "Argument '%s' provided as input filename, but '%s' was already specified.\n",
                 arg, input_filename);
-        exit(1);
+        exit_program(1);
     }
     if (!strcmp(arg, "-"))
         arg = "pipe:";
@@ -2017,6 +2650,145 @@ void show_help_default(const char *opt, const char *arg)
     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
 }
 
+/**
+ * Parse interval specification, according to the format:
+ * INTERVAL ::= [START|+START_OFFSET][%[END|+END_OFFSET]]
+ * INTERVALS ::= INTERVAL[,INTERVALS]
+*/
+static int parse_read_interval(const char *interval_spec,
+                               ReadInterval *interval)
+{
+    int ret = 0;
+    char *next, *p, *spec = av_strdup(interval_spec);
+    if (!spec)
+        return AVERROR(ENOMEM);
+
+    if (!*spec) {
+        av_log(NULL, AV_LOG_ERROR, "Invalid empty interval specification\n");
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+
+    p = spec;
+    next = strchr(spec, '%');
+    if (next)
+        *next++ = 0;
+
+    /* parse first part */
+    if (*p) {
+        interval->has_start = 1;
+
+        if (*p == '+') {
+            interval->start_is_offset = 1;
+            p++;
+        } else {
+            interval->start_is_offset = 0;
+        }
+
+        ret = av_parse_time(&interval->start, p, 1);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Invalid interval start specification '%s'\n", p);
+            goto end;
+        }
+    } else {
+        interval->has_start = 0;
+    }
+
+    /* parse second part */
+    p = next;
+    if (p && *p) {
+        int64_t us;
+        interval->has_end = 1;
+
+        if (*p == '+') {
+            interval->end_is_offset = 1;
+            p++;
+        } else {
+            interval->end_is_offset = 0;
+        }
+
+        if (interval->end_is_offset && *p == '#') {
+            long long int lli;
+            char *tail;
+            interval->duration_frames = 1;
+            p++;
+            lli = strtoll(p, &tail, 10);
+            if (*tail || lli < 0) {
+                av_log(NULL, AV_LOG_ERROR,
+                       "Invalid or negative value '%s' for duration number of frames\n", p);
+                goto end;
+            }
+            interval->end = lli;
+        } else {
+            ret = av_parse_time(&us, p, 1);
+            if (ret < 0) {
+                av_log(NULL, AV_LOG_ERROR, "Invalid interval end/duration specification '%s'\n", p);
+                goto end;
+            }
+            interval->end = us;
+        }
+    } else {
+        interval->has_end = 0;
+    }
+
+end:
+    av_free(spec);
+    return ret;
+}
+
+static int parse_read_intervals(const char *intervals_spec)
+{
+    int ret, n, i;
+    char *p, *spec = av_strdup(intervals_spec);
+    if (!spec)
+        return AVERROR(ENOMEM);
+
+    /* preparse specification, get number of intervals */
+    for (n = 0, p = spec; *p; p++)
+        if (*p == ',')
+            n++;
+    n++;
+
+    read_intervals = av_malloc_array(n, sizeof(*read_intervals));
+    if (!read_intervals) {
+        ret = AVERROR(ENOMEM);
+        goto end;
+    }
+    read_intervals_nb = n;
+
+    /* parse intervals */
+    p = spec;
+    for (i = 0; p; i++) {
+        char *next;
+
+        av_assert0(i < read_intervals_nb);
+        next = strchr(p, ',');
+        if (next)
+            *next++ = 0;
+
+        read_intervals[i].id = i;
+        ret = parse_read_interval(p, &read_intervals[i]);
+        if (ret < 0) {
+            av_log(NULL, AV_LOG_ERROR, "Error parsing read interval #%d '%s'\n",
+                   i, p);
+            goto end;
+        }
+        av_log(NULL, AV_LOG_VERBOSE, "Parsed log interval ");
+        log_read_interval(&read_intervals[i], NULL, AV_LOG_VERBOSE);
+        p = next;
+    }
+    av_assert0(i == read_intervals_nb);
+
+end:
+    av_free(spec);
+    return ret;
+}
+
+static int opt_read_intervals(void *optctx, const char *opt, const char *arg)
+{
+    return parse_read_intervals(arg);
+}
+
 static int opt_pretty(void *optctx, const char *opt, const char *arg)
 {
     show_value_unit              = 1;
@@ -2026,13 +2798,59 @@ static int opt_pretty(void *optctx, const char *opt, const char *arg)
     return 0;
 }
 
+static void print_section(SectionID id, int level)
+{
+    const SectionID *pid;
+    const struct section *section = &sections[id];
+    printf("%c%c%c",
+           section->flags & SECTION_FLAG_IS_WRAPPER           ? 'W' : '.',
+           section->flags & SECTION_FLAG_IS_ARRAY             ? 'A' : '.',
+           section->flags & SECTION_FLAG_HAS_VARIABLE_FIELDS  ? 'V' : '.');
+    printf("%*c  %s", level * 4, ' ', section->name);
+    if (section->unique_name)
+        printf("/%s", section->unique_name);
+    printf("\n");
+
+    for (pid = section->children_ids; *pid != -1; pid++)
+        print_section(*pid, level+1);
+}
+
+static int opt_sections(void *optctx, const char *opt, const char *arg)
+{
+    printf("Sections:\n"
+           "W.. = Section is a wrapper (contains other sections, no local entries)\n"
+           ".A. = Section contains an array of elements of the same type\n"
+           "..V = Section may contain a variable number of fields with variable keys\n"
+           "FLAGS NAME/UNIQUE_NAME\n"
+           "---\n");
+    print_section(SECTION_ID_ROOT, 0);
+    return 0;
+}
+
 static int opt_show_versions(const char *opt, const char *arg)
 {
-    do_show_program_version  = 1;
-    do_show_library_versions = 1;
+    mark_section_show_entries(SECTION_ID_PROGRAM_VERSION, 1, NULL);
+    mark_section_show_entries(SECTION_ID_LIBRARY_VERSION, 1, NULL);
     return 0;
 }
 
+#define DEFINE_OPT_SHOW_SECTION(section, target_section_id)             \
+    static int opt_show_##section(const char *opt, const char *arg)     \
+    {                                                                   \
+        mark_section_show_entries(SECTION_ID_##target_section_id, 1, NULL); \
+        return 0;                                                       \
+    }
+
+DEFINE_OPT_SHOW_SECTION(chapters,         CHAPTERS);
+DEFINE_OPT_SHOW_SECTION(error,            ERROR);
+DEFINE_OPT_SHOW_SECTION(format,           FORMAT);
+DEFINE_OPT_SHOW_SECTION(frames,           FRAMES);
+DEFINE_OPT_SHOW_SECTION(library_versions, LIBRARY_VERSIONS);
+DEFINE_OPT_SHOW_SECTION(packets,          PACKETS);
+DEFINE_OPT_SHOW_SECTION(program_version,  PROGRAM_VERSION);
+DEFINE_OPT_SHOW_SECTION(streams,          STREAMS);
+DEFINE_OPT_SHOW_SECTION(programs,         PROGRAMS);
+
 static const OptionDef real_options[] = {
 #include "cmdutils_common_opts.h"
     { "f", HAS_ARG, {.func_arg = opt_format}, "force format", "format" },
@@ -2047,36 +2865,62 @@ static const OptionDef real_options[] = {
     { "print_format", OPT_STRING | HAS_ARG, {(void*)&print_format},
       "set the output printing format (available formats are: default, compact, csv, flat, ini, json, xml)", "format" },
     { "of", OPT_STRING | HAS_ARG, {(void*)&print_format}, "alias for -print_format", "format" },
+    { "select_streams", OPT_STRING | HAS_ARG, {(void*)&stream_specifier}, "select the specified streams", "stream_specifier" },
+    { "sections", OPT_EXIT, {.func_arg = opt_sections}, "print sections structure and section information, and exit" },
     { "show_data",    OPT_BOOL, {(void*)&do_show_data}, "show packets data" },
-    { "show_error",   OPT_BOOL, {(void*)&do_show_error} ,  "show probing error" },
-    { "show_format",  OPT_BOOL, {&do_show_format} , "show format/container info" },
-    { "show_frames",  OPT_BOOL, {(void*)&do_show_frames} , "show frames info" },
+    { "show_error",   0, {(void*)&opt_show_error},  "show probing error" },
+    { "show_format",  0, {(void*)&opt_show_format}, "show format/container info" },
+    { "show_frames",  0, {(void*)&opt_show_frames}, "show frames info" },
     { "show_format_entry", HAS_ARG, {.func_arg = opt_show_format_entry},
       "show a particular entry from the format/container info", "entry" },
-    { "show_packets", OPT_BOOL, {&do_show_packets}, "show packets info" },
-    { "show_streams", OPT_BOOL, {&do_show_streams}, "show streams info" },
+    { "show_entries", HAS_ARG, {.func_arg = opt_show_entries},
+      "show a set of specified entries", "entry_list" },
+    { "show_packets", 0, {(void*)&opt_show_packets}, "show packets info" },
+    { "show_programs", 0, {(void*)&opt_show_programs}, "show programs info" },
+    { "show_streams", 0, {(void*)&opt_show_streams}, "show streams info" },
+    { "show_chapters", 0, {(void*)&opt_show_chapters}, "show chapters info" },
     { "count_frames", OPT_BOOL, {(void*)&do_count_frames}, "count the number of frames per stream" },
     { "count_packets", OPT_BOOL, {(void*)&do_count_packets}, "count the number of packets per stream" },
-    { "show_program_version",  OPT_BOOL, {(void*)&do_show_program_version},  "show ffprobe version" },
-    { "show_library_versions", OPT_BOOL, {(void*)&do_show_library_versions}, "show library versions" },
+    { "show_program_version",  0, {(void*)&opt_show_program_version},  "show ffprobe version" },
+    { "show_library_versions", 0, {(void*)&opt_show_library_versions}, "show library versions" },
     { "show_versions",         0, {(void*)&opt_show_versions}, "show program and library versions" },
     { "show_private_data", OPT_BOOL, {(void*)&show_private_data}, "show private data" },
     { "private",           OPT_BOOL, {(void*)&show_private_data}, "same as show_private_data" },
     { "bitexact", OPT_BOOL, {&do_bitexact}, "force bitexact output" },
+    { "read_intervals", HAS_ARG, {.func_arg = opt_read_intervals}, "set read intervals", "read_intervals" },
     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },
     { "i", HAS_ARG, {.func_arg = opt_input_file_i}, "read specified file", "input_file"},
     { NULL, },
 };
 
+static inline int check_section_show_entries(int section_id)
+{
+    int *id;
+    struct section *section = &sections[section_id];
+    if (sections[section_id].show_all_entries || sections[section_id].entries_to_show)
+        return 1;
+    for (id = section->children_ids; *id != -1; id++)
+        if (check_section_show_entries(*id))
+            return 1;
+    return 0;
+}
+
+#define SET_DO_SHOW(id, varname) do {                                   \
+        if (check_section_show_entries(SECTION_ID_##id))                \
+            do_show_##varname = 1;                                      \
+    } while (0)
+
 int main(int argc, char **argv)
 {
     const Writer *w;
     WriterContext *wctx;
     char *buf;
     char *w_name = NULL, *w_args = NULL;
-    int ret;
+    int ret, i;
 
     av_log_set_flags(AV_LOG_SKIP_REPEATED);
+    register_exit(ffprobe_cleanup);
+
     options = real_options;
     parse_loglevel(argc, argv, options);
     av_register_all();
@@ -2089,6 +2933,25 @@ int main(int argc, char **argv)
     show_banner(argc, argv, options);
     parse_options(NULL, argc, argv, options, opt_input_file);
 
+    /* mark things to show, based on -show_entries */
+    SET_DO_SHOW(CHAPTERS, chapters);
+    SET_DO_SHOW(ERROR, error);
+    SET_DO_SHOW(FORMAT, format);
+    SET_DO_SHOW(FRAMES, frames);
+    SET_DO_SHOW(LIBRARY_VERSIONS, library_versions);
+    SET_DO_SHOW(PACKETS, packets);
+    SET_DO_SHOW(PROGRAM_VERSION, program_version);
+    SET_DO_SHOW(PROGRAMS, programs);
+    SET_DO_SHOW(STREAMS, streams);
+    SET_DO_SHOW(STREAM_DISPOSITION, stream_disposition);
+    SET_DO_SHOW(PROGRAM_STREAM_DISPOSITION, stream_disposition);
+
+    SET_DO_SHOW(CHAPTER_TAGS, chapter_tags);
+    SET_DO_SHOW(FORMAT_TAGS, format_tags);
+    SET_DO_SHOW(FRAME_TAGS, frame_tags);
+    SET_DO_SHOW(PROGRAM_TAGS, program_tags);
+    SET_DO_SHOW(STREAM_TAGS, stream_tags);
+
     if (do_bitexact && (do_show_program_version || do_show_library_versions)) {
         av_log(NULL, AV_LOG_ERROR,
                "-bitexact and -show_program_version or -show_library_versions "
@@ -2101,6 +2964,10 @@ int main(int argc, char **argv)
 
     if (!print_format)
         print_format = av_strdup("default");
+    if (!print_format) {
+        ret = AVERROR(ENOMEM);
+        goto end;
+    }
     w_name = av_strtok(print_format, "=", &buf);
     w_args = buf;
 
@@ -2113,6 +2980,9 @@ int main(int argc, char **argv)
 
     if ((ret = writer_open(&wctx, w, w_args,
                            sections, FF_ARRAY_ELEMS(sections))) >= 0) {
+        if (w == &xml_writer)
+            wctx->string_validation_utf8_flags |= AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES;
+
         writer_print_section_header(wctx, SECTION_ID_ROOT);
 
         if (do_show_program_version)
@@ -2121,7 +2991,7 @@ int main(int argc, char **argv)
             ffprobe_show_library_versions(wctx);
 
         if (!input_filename &&
-            ((do_show_format || do_show_streams || do_show_packets || do_show_error) ||
+            ((do_show_format || do_show_programs || do_show_streams || do_show_chapters || do_show_packets || do_show_error) ||
              (!do_show_program_version && !do_show_library_versions))) {
             show_usage();
             av_log(NULL, AV_LOG_ERROR, "You have to specify one input file.\n");
@@ -2139,11 +3009,13 @@ int main(int argc, char **argv)
 
 end:
     av_freep(&print_format);
+    av_freep(&read_intervals);
 
     uninit_opts();
-    av_dict_free(&fmt_entries_to_show);
+    for (i = 0; i < FF_ARRAY_ELEMS(sections); i++)
+        av_dict_free(&(sections[i].entries_to_show));
 
     avformat_network_deinit();
 
-    return ret;
+    return ret < 0;
 }