releases are sorted from youngest to oldest.
version <next>:
-- aliases and defaults for Ogg subtypes (opus, spx)
-- HEVC/H.265 RTP payload format (draft v6) packetizer and depacketizer
-- avplay now exits by default at the end of playback
+- HEVC/H.265 RTP payload format (draft v6) packetizer
+- SUP/PGS subtitle demuxer
+- ffprobe -show_pixel_formats option
+- CAST128 symmetric block cipher, ECB mode
+- STL subtitle demuxer and decoder
+- libutvideo YUV 4:2:2 10bit support
- XCB-based screen-grabber
- - creating DASH compatible fragmented MP4
+- UDP-Lite support (RFC 3828)
+- xBR scaling filter
+- AVFoundation screen capturing support
+- ffserver supports codec private options
+ - creating DASH compatible fragmented MP4, MPEG-DASH segmenting muxer
+version 2.4:
+- Icecast protocol
+- ported lenscorrection filter from frei0r filter
+- large optimizations in dctdnoiz to make it usable
+- ICY metadata are now requested by default with the HTTP protocol
+- support for using metadata in stream specifiers in fftools
+- LZMA compression support in TIFF decoder
+- support for H.261 RTP payload format (RFC 4587)
+- HEVC/H.265 RTP payload format (draft v6) depacketizer
+- added codecview filter to visualize information exported by some codecs
+- Matroska 3D support thorugh side data
+- HTML generation using texi2html is deprecated in favor of makeinfo/texi2any
+- silenceremove filter
-version 11:
-- libx265 encoder
+
+version 2.3:
+- AC3 fixed-point decoding
- shuffleplanes filter
+- subfile protocol
+- Phantom Cine demuxer
- replaygain data export
+- VP7 video decoder
- Alias PIX image encoder and decoder
-- BRender PIX image decoder
-- Amazing Studio PAF playback support
-- XBM decoder
-- BMP standalone parser
-- OpenEXR image decoder
-- support encoding and decoding 4-channel SGI images
+- Improvements to the BRender PIX image decoder
+- Improvements to the XBM decoder
+- QTKit input device
+- improvements to OpenEXR image decoder
- support decoding 16-bit RLE SGI images
-- VP7 video decoder
-- LucasArts SMUSH SANM video decoder
-- LucasArts SMUSH VIMA audio decoder (ADPCM)
-- LucasArts SMUSH demuxer
-- MP2 encoding via TwoLAME
-- asettb filter
-- Silicon Graphics RLE 8-bit video decoder
-- Silicon Graphics Motion Video Compressor 1 & 2 decoder
-- Silicon Graphics Movie demuxer
+- GDI screen grabbing for Windows
+- alternative rendition support for HTTP Live Streaming
+- AVFoundation input device
+- Direct Stream Digital (DSD) decoder
+- Magic Lantern Video (MLV) demuxer
- On2 AVC (Audio for Video) decoder
-- support for decoding through DXVA2 in avconv
+- support for decoding through DXVA2 in ffmpeg
- libbs2b-based stereo-to-binaural audio filter
+- libx264 reference frames count limiting depending on level
- native Opus decoder
- display matrix export and rotation API
-- drop avserver, it was unmaintained for years and largely broken
-- Icecast protocol
-- request Icecast metadata by default
-- support for using metadata in stream specifiers in avtools
-- Matroska 3D support
+- WebVTT encoder
+- showcqt multimedia filter
+- zoompan filter
+- signalstats filter
+- hqx filter (hq2x, hq3x, hq4x)
+- flanger filter
+- Image format auto-detection
+- LRC demuxer and muxer
+- Samba protocol (via libsmbclient)
+- WebM DASH Manifest muxer
+- libfribidi support in drawtext
-version 10:
-- av_strnstr
-- support ID3v2 tags in ASF files
+version 2.2:
+
+- HNM version 4 demuxer and video decoder
+- Live HDS muxer
+- setsar/setdar filters now support variables in ratio expressions
+- elbg filter
+- string validation in ffprobe
+- support for decoding through VDPAU in ffmpeg (the -hwaccel option)
+- complete Voxware MetaSound decoder
+- remove mp3_header_compress bitstream filter
+- Windows resource files for shared libraries
+- aeval filter
+- stereoscopic 3d metadata handling
+- WebP encoding via libwebp
+- ATRAC3+ decoder
+- VP8 in Ogg demuxing
+- side & metadata support in NUT
+- framepack filter
+- XYZ12 rawvideo support in NUT
+- Exif metadata support in WebP decoder
+- OpenGL device
+- Use metadata_header_padding to control padding in ID3 tags (currently used in
+ MP3, AIFF, and OMA files), FLAC header, and the AVI "junk" block.
+- Mirillis FIC video decoder
+- Support DNx444
+- libx265 encoder
+- dejudder filter
+- Autodetect VDA like all other hardware accelerations
+- aliases and defaults for Ogg subtypes (opus, spx)
+
+
+version 2.1:
+
+- aecho filter
+- perspective filter ported from libmpcodecs
+- ffprobe -show_programs option
+- compand filter
+- RTMP seek support
+- when transcoding with ffmpeg (i.e. not streamcopying), -ss is now accurate
+ even when used as an input option. Previous behavior can be restored with
+ the -noaccurate_seek option.
+- ffmpeg -t option can now be used for inputs, to limit the duration of
+ data read from an input file
+- incomplete Voxware MetaSound decoder
+- read EXIF metadata from JPEG
+- DVB teletext decoder
+- phase filter ported from libmpcodecs
+- w3fdif filter
+- Opus support in Matroska
+- FFV1 version 1.3 is stable and no longer experimental
+- FFV1: YUVA(444,422,420) 9, 10 and 16 bit support
+- changed DTS stream id in lavf mpeg ps muxer from 0x8a to 0x88, to be
+ more consistent with other muxers.
+- adelay filter
+- pullup filter ported from libmpcodecs
+- ffprobe -read_intervals option
+- Lossless and alpha support for WebP decoder
+- Error Resilient AAC syntax (ER AAC LC) decoding
+- Low Delay AAC (ER AAC LD) decoding
+- mux chapters in ASF files
+- SFTP protocol (via libssh)
+- libx264: add ability to encode in YUVJ422P and YUVJ444P
+- Fraps: use BT.709 colorspace by default for yuv, as reference fraps decoder does
+- make decoding alpha optional for prores, ffv1 and vp6 by setting
+ the skip_alpha flag.
+- ladspa wrapper filter
+- native VP9 decoder
+- dpx parser
+- max_error_rate parameter in ffmpeg
+- PulseAudio output device
+- ReplayGain scanner
+- Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
+- Linux framebuffer output device
+- HEVC decoder
+- raw HEVC, HEVC in MOV/MP4, HEVC in Matroska, HEVC in MPEG-TS demuxing
+- mergeplanes filter
+
+
+version 2.0:
+
+- curves filter
- reference-counting for AVFrame and AVPacket data
-- avconv now fails when input options are used for output file
+- ffmpeg now fails when input options are used for output file
or vice versa
-- avconv options -filter_script and -filter_complex_script, which allow a
+- support for Monkey's Audio versions from 3.93
+- perms and aperms filters
+- audio filtering support in ffplay
+- 10% faster aac encoding on x86 and MIPS
+- sine audio filter source
+- WebP demuxing and decoding support
+- ffmpeg options -filter_script and -filter_complex_script, which allow a
filtergraph description to be read from a file
+- OpenCL support
+- audio phaser filter
+- separatefields filter
+- libquvi demuxer
- uniform options syntax across all filters
+- telecine filter
- interlace filter
-- JPEG 2000 decoder
-- asetpts filter (same as setpts, but for audio)
+- smptehdbars source
+- inverse telecine filters (fieldmatch and decimate)
+- colorbalance filter
+- colorchannelmixer filter
+- The matroska demuxer can now output proper verbatim ASS packets. It will
+ become the default at the next libavformat major bump.
+- decent native animated GIF encoding
+- asetrate filter
+- interleave filter
+- timeline editing with filters
+- vidstabdetect and vidstabtransform filters for video stabilization using
+ the vid.stab library
+- astats filter
- trim and atrim filters
-- avconv -t and -ss (output-only) options are now sample-accurate when
+- ffmpeg -t and -ss (output-only) options are now sample-accurate when
transcoding audio
- Matroska muxer can now put the index at the beginning of the file.
-- avconv -deinterlace option removed, the yadif filter should be used instead
+- extractplanes filter
+- avectorscope filter
+- ADPCM DTK decoder
+- ADP demuxer
+- RSD demuxer
+- RedSpark demuxer
+- ADPCM IMA Radical decoder
+- zmq filters
+- DCT denoiser filter (dctdnoiz)
+- Wavelet denoiser filter ported from libmpcodecs as owdenoise (formerly "ow")
- Apple Intermediate Codec decoder
- Escape 130 video decoder
+- FTP protocol support
+- V4L2 output device
+- 3D LUT filter (lut3d)
+- SMPTE 302M audio encoder
- support for slice multithreading in libavfilter
+- Hald CLUT support (generation and filtering)
- VC-1 interlaced B-frame support
- support for WavPack muxing (raw and in Matroska)
+- XVideo output device
+- vignette filter
+- True Audio (TTA) encoder
- Go2Webinar decoder
+- mcdeint filter ported from libmpcodecs
+- sab filter ported from libmpcodecs
+- ffprobe -show_chapters option
- WavPack encoding through libwavpack
-- Added the -n parameter to avconv
-- RTMP seek support
-- when transcoding with avconv (i.e. not streamcopying), -ss is now accurate
- even when used as an input option. Previous behavior can be restored with
- the -noaccurate_seek option.
-- avconv -t option can now be used for inputs, to limit the duration of
- data read from an input file
-- Voxware MetaSound decoder
-- WebP decoder
-- Error Resilient AAC syntax (ER AAC LC) decoding
-- Low Delay AAC (ER AAC LD) decoding
-- mux chapters in ASF files
-- Opus in Ogg demuxing
-- Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
-- F4V muxer
-- HNM version 4 demuxer and video decoder
-- HEVC decoder
-- raw HEVC, HEVC in MOV/MP4, HEVC in Matroska, HEVC in MPEG-TS demuxing
-- remove avplay -vismv option, which has not worked for a long time
-- Live HDS muxer
-- setsar/setdar filters now support variables in ratio expressions
-- dar variable in the scale filter now returns the actual DAR (i.e. a * sar)
-- VP9 decoder
-- support for decoding through VDPAU in avconv (the -hwaccel option)
-- remove mp3_header_(de)compress bitstream filters
-- stereoscopic 3d metadata handling
-- png standalone parser
-- WebP encoding via libwebp
-- ATRAC3+ decoder
-- framepack filter
-- Mirillis FIC video decoder
-- Support DNx444
-- compand audio filter
+- rotate filter
+- spp filter ported from libmpcodecs
+- libgme support
+- psnr filter
-version 9:
-- av_basename and av_dirname
-- adobe and limelight publisher authentication in RTMP
+version 1.2:
+
- VDPAU hardware acceleration through normal hwaccel
- SRTP support
+- Error diffusion dither in Swscale
+- Chained Ogg support
+- Theora Midstream reconfiguration support
+- EVRC decoder
+- audio fade filter
+- filtering audio with unknown channel layout
+- allpass, bass, bandpass, bandreject, biquad, equalizer, highpass, lowpass
+ and treble audio filter
+- improved showspectrum filter, with multichannel support and sox-like colors
+- histogram filter
+- tee muxer
+- il filter ported from libmpcodecs
+- support ID3v2 tags in ASF files
+- encrypted TTA stream decoding support
+- RF64 support in WAV muxer
+- noise filter ported from libmpcodecs
+- Subtitles character encoding conversion
+- blend filter
+- stereo3d filter ported from libmpcodecs
-version 9_beta3:
-- ashowinfo audio filter
+version 1.1:
+
+- stream disposition information printing in ffprobe
+- filter for loudness analysis following EBU R128
+- Opus encoder using libopus
+- ffprobe -select_streams option
+- Pinnacle TARGA CineWave YUV16 decoder
+- TAK demuxer, decoder and parser
+- DTS-HD demuxer
+- remove -same_quant, it hasn't worked for years
+- FFM2 support
+- X-Face image encoder and decoder
- 24-bit FLAC encoding
-- audio volume filter
-- deprecated the avconv -vol option. the volume filter is to be used instead.
- multi-channel ALAC encoding up to 7.1
-- TAK demuxer, parser, and decoder
-- adaptive frame-level multithreading for H.264
-
-
-version 9_beta2:
- metadata (INFO tag) support in WAV muxer
+- subtitles raw text decoder
- support for building DLLs using MSVC
-- remove avserver daemon mode
+- LVF demuxer
+- ffescape tool
+- metadata (info chunk) support in CAF muxer
+- field filter ported from libmpcodecs
+- AVR demuxer
+- geq filter ported from libmpcodecs
+- remove ffserver daemon mode
+- AST muxer/demuxer
+- new expansion syntax for drawtext
+- BRender PIX image decoder
+- ffprobe -show_entries option
+- ffprobe -sections option
+- ADPCM IMA Dialogic decoder
+- BRSTM demuxer
+- animated GIF decoder and demuxer
+- PVF demuxer
+- subtitles filter
+- IRCAM muxer/demuxer
+- Paris Audio File demuxer
+- Virtual concatenation demuxer
+- VobSub demuxer
+- JSON captions for TED talks decoding support
+- SOX Resampler support in libswresample
+- aselect filter
+- SGI RLE 8-bit / Silicon Graphics RLE 8-bit video decoder
+- Silicon Graphics Motion Video Compressor 1 & 2 decoder
+- Silicon Graphics Movie demuxer
+- apad filter
+- Resolution & pixel format change support with multithreading for H.264
+- documentation split into per-component manuals
+- pp (postproc) filter ported from MPlayer
+- NIST Sphere demuxer
+- MPL2, VPlayer, MPlayer, AQTitle, PJS and SubViewer v1 subtitles demuxers and decoders
+- Sony Wave64 muxer
+- adobe and limelight publisher authentication in RTMP
+- data: URI scheme
- support building on the Plan 9 operating system
-- ffv1: support version 1.3
+- kerndeint filter ported from MPlayer
+- histeq filter ported from VirtualDub
+- Megalux Frame demuxer
+- 012v decoder
+- Improved AVC Intra decoding support
-version 9_beta1:
+version 1.0:
-- XWD encoder and decoder
-- Support for fragmentation in the mov/mp4 muxer
-- ISMV (Smooth Streaming) muxer
-- CDXL demuxer and decoder
-- Apple ProRes encoder
-- Sun Rasterfile Encoder
-- remove libpostproc
-- ID3v2 attached pictures reading and writing
-- WMA Lossless decoder
-- XBM encoder
-- RealAudio Lossless decoder
-- ZeroCodec decoder
-- drop support for avconv without libavfilter
-- add libavresample audio conversion library
-- audio filters support in libavfilter and avconv
-- add fps filter
-- audio split filter
-- audio mix filter
-- avprobe output is now standard INI or JSON. The old format can still
- be used with -of old.
+- INI and flat output in ffprobe
+- Scene detection in libavfilter
- Indeo Audio decoder
- channelsplit audio filter
+- setnsamples audio filter
+- atempo filter
+- ffprobe -show_data option
- RTMPT protocol support
- iLBC encoding/decoding via libilbc
- Microsoft Screen 1 decoder
--- /dev/null
- * This file is part of Libav.
+ /*
+ * MPEG-DASH ISO BMFF segmenter
+ * Copyright (c) 2014 Martin Storsjo
+ *
- * Libav is free software; you can redistribute it and/or
++ * This file is part of FFmpeg.
+ *
- * Libav is distributed in the hope that it will be useful,
++ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
- * License along with Libav; if not, write to the Free Software
++ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
- return ff_rename(temp_filename, s->filename);
++ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+ #include "config.h"
+ #if HAVE_UNISTD_H
+ #include <unistd.h>
+ #endif
+
+ #include "libavutil/avstring.h"
+ #include "libavutil/intreadwrite.h"
+ #include "libavutil/mathematics.h"
+ #include "libavutil/opt.h"
+ #include "libavutil/time_internal.h"
+
+ #include "avc.h"
+ #include "avformat.h"
+ #include "avio_internal.h"
+ #include "internal.h"
+ #include "isom.h"
+ #include "os_support.h"
+ #include "url.h"
+
+ typedef struct Segment {
+ char file[1024];
+ int64_t start_pos;
+ int range_length, index_length;
+ int64_t time;
+ int duration;
+ int n;
+ } Segment;
+
+ typedef struct OutputStream {
+ AVFormatContext *ctx;
+ int ctx_inited;
+ uint8_t iobuf[32768];
+ URLContext *out;
+ int packets_written;
+ char initfile[1024];
+ int64_t init_start_pos;
+ int init_range_length;
+ int nb_segments, segments_size, segment_index;
+ Segment **segments;
+ int64_t first_dts, start_dts, end_dts;
+
+ char codec_str[100];
+ } OutputStream;
+
+ typedef struct DASHContext {
+ const AVClass *class; /* Class for private options. */
+ int window_size;
+ int extra_window_size;
+ int min_seg_duration;
+ int remove_at_exit;
+ int use_template;
+ int use_timeline;
+ int single_file;
+ OutputStream *streams;
+ int has_video, has_audio;
+ int nb_segments;
+ int last_duration;
+ int total_duration;
+ char availability_start_time[100];
+ char dirname[1024];
+ } DASHContext;
+
+ static int dash_write(void *opaque, uint8_t *buf, int buf_size)
+ {
+ OutputStream *os = opaque;
+ if (os->out)
+ ffurl_write(os->out, buf, buf_size);
+ return buf_size;
+ }
+
+ // RFC 6381
+ static void set_codec_str(AVFormatContext *s, AVCodecContext *codec,
+ char *str, int size)
+ {
+ const AVCodecTag *tags[2] = { NULL, NULL };
+ uint32_t tag;
+ if (codec->codec_type == AVMEDIA_TYPE_VIDEO)
+ tags[0] = ff_codec_movvideo_tags;
+ else if (codec->codec_type == AVMEDIA_TYPE_AUDIO)
+ tags[0] = ff_codec_movaudio_tags;
+ else
+ return;
+
+ tag = av_codec_get_tag(tags, codec->codec_id);
+ if (!tag)
+ return;
+ if (size < 5)
+ return;
+
+ AV_WL32(str, tag);
+ str[4] = '\0';
+ if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
+ uint32_t oti;
+ tags[0] = ff_mp4_obj_type;
+ oti = av_codec_get_tag(tags, codec->codec_id);
+ if (oti)
+ av_strlcatf(str, size, ".%02x", oti);
+ else
+ return;
+
+ if (tag == MKTAG('m', 'p', '4', 'a')) {
+ if (codec->extradata_size >= 2) {
+ int aot = codec->extradata[0] >> 3;
+ if (aot == 31)
+ aot = ((AV_RB16(codec->extradata) >> 5) & 0x3f) + 32;
+ av_strlcatf(str, size, ".%d", aot);
+ }
+ } else if (tag == MKTAG('m', 'p', '4', 'v')) {
+ // Unimplemented, should output ProfileLevelIndication as a decimal number
+ av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
+ }
+ } else if (!strcmp(str, "avc1")) {
+ uint8_t *tmpbuf = NULL;
+ uint8_t *extradata = codec->extradata;
+ int extradata_size = codec->extradata_size;
+ if (!extradata_size)
+ return;
+ if (extradata[0] != 1) {
+ AVIOContext *pb;
+ if (avio_open_dyn_buf(&pb) < 0)
+ return;
+ if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
+ avio_close_dyn_buf(pb, &tmpbuf);
+ av_free(tmpbuf);
+ return;
+ }
+ extradata_size = avio_close_dyn_buf(pb, &extradata);
+ tmpbuf = extradata;
+ }
+
+ if (extradata_size >= 4)
+ av_strlcatf(str, size, ".%02x%02x%02x",
+ extradata[1], extradata[2], extradata[3]);
+ av_free(tmpbuf);
+ }
+ }
+
+ static void dash_free(AVFormatContext *s)
+ {
+ DASHContext *c = s->priv_data;
+ int i, j;
+ if (!c->streams)
+ return;
+ for (i = 0; i < s->nb_streams; i++) {
+ OutputStream *os = &c->streams[i];
+ if (os->ctx && os->ctx_inited)
+ av_write_trailer(os->ctx);
+ if (os->ctx && os->ctx->pb)
+ av_free(os->ctx->pb);
+ ffurl_close(os->out);
+ os->out = NULL;
+ if (os->ctx)
+ avformat_free_context(os->ctx);
+ for (j = 0; j < os->nb_segments; j++)
+ av_free(os->segments[j]);
+ av_free(os->segments);
+ }
+ av_freep(&c->streams);
+ }
+
+ static void output_segment_list(OutputStream *os, AVIOContext *out, DASHContext *c)
+ {
+ int i, start_index = 0, start_number = 1;
+ if (c->window_size) {
+ start_index = FFMAX(os->nb_segments - c->window_size, 0);
+ start_number = FFMAX(os->segment_index - c->window_size, 1);
+ }
+
+ if (c->use_template) {
+ int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
+ avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
+ if (!c->use_timeline)
+ avio_printf(out, "duration=\"%d\" ", c->last_duration);
+ avio_printf(out, "initialization=\"init-stream$RepresentationID$.m4s\" media=\"chunk-stream$RepresentationID$-$Number%%05d$.m4s\" startNumber=\"%d\">\n", c->use_timeline ? start_number : 1);
+ if (c->use_timeline) {
+ avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
+ for (i = start_index; i < os->nb_segments; ) {
+ Segment *seg = os->segments[i];
+ int repeat = 0;
+ avio_printf(out, "\t\t\t\t\t\t<S ");
+ if (i == start_index)
+ avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
+ avio_printf(out, "d=\"%d\" ", seg->duration);
+ while (i + repeat + 1 < os->nb_segments && os->segments[i + repeat + 1]->duration == seg->duration)
+ repeat++;
+ if (repeat > 0)
+ avio_printf(out, "r=\"%d\" ", repeat);
+ avio_printf(out, "/>\n");
+ i += 1 + repeat;
+ }
+ avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
+ }
+ avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
+ } else if (c->single_file) {
+ avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
+ avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%d\" startNumber=\"%d\">\n", AV_TIME_BASE, c->last_duration, start_number);
+ avio_printf(out, "\t\t\t\t\t<Initialization range=\"%"PRId64"-%"PRId64"\" />\n", os->init_start_pos, os->init_start_pos + os->init_range_length - 1);
+ for (i = start_index; i < os->nb_segments; i++) {
+ Segment *seg = os->segments[i];
+ avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
+ if (seg->index_length)
+ avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
+ avio_printf(out, "/>\n");
+ }
+ avio_printf(out, "\t\t\t\t</SegmentList>\n");
+ } else {
+ avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%d\" startNumber=\"%d\">\n", AV_TIME_BASE, c->last_duration, start_number);
+ avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
+ for (i = start_index; i < os->nb_segments; i++) {
+ Segment *seg = os->segments[i];
+ avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
+ }
+ avio_printf(out, "\t\t\t\t</SegmentList>\n");
+ }
+ }
+
+ static char *xmlescape(const char *str) {
+ int outlen = strlen(str)*3/2 + 6;
+ char *out = av_realloc(NULL, outlen + 1);
+ int pos = 0;
+ if (!out)
+ return NULL;
+ for (; *str; str++) {
+ if (pos + 6 > outlen) {
+ char *tmp;
+ outlen = 2 * outlen + 6;
+ tmp = av_realloc(out, outlen + 1);
+ if (!tmp) {
+ av_free(out);
+ return NULL;
+ }
+ out = tmp;
+ }
+ if (*str == '&') {
+ memcpy(&out[pos], "&", 5);
+ pos += 5;
+ } else if (*str == '<') {
+ memcpy(&out[pos], "<", 4);
+ pos += 4;
+ } else if (*str == '>') {
+ memcpy(&out[pos], ">", 4);
+ pos += 4;
+ } else if (*str == '\'') {
+ memcpy(&out[pos], "'", 6);
+ pos += 6;
+ } else if (*str == '\"') {
+ memcpy(&out[pos], """, 6);
+ pos += 6;
+ } else {
+ out[pos++] = *str;
+ }
+ }
+ out[pos] = '\0';
+ return out;
+ }
+
+ static void write_time(AVIOContext *out, int64_t time)
+ {
+ int seconds = time / AV_TIME_BASE;
+ int fractions = time % AV_TIME_BASE;
+ int minutes = seconds / 60;
+ int hours = minutes / 60;
+ seconds %= 60;
+ minutes %= 60;
+ avio_printf(out, "PT");
+ if (hours)
+ avio_printf(out, "%dH", hours);
+ if (hours || minutes)
+ avio_printf(out, "%dM", minutes);
+ avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
+ }
+
+ static int write_manifest(AVFormatContext *s, int final)
+ {
+ DASHContext *c = s->priv_data;
+ AVIOContext *out;
+ char temp_filename[1024];
+ int ret, i;
+ AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
+
+ snprintf(temp_filename, sizeof(temp_filename), "%s.tmp", s->filename);
+ ret = avio_open2(&out, temp_filename, AVIO_FLAG_WRITE, &s->interrupt_callback, NULL);
+ if (ret < 0) {
+ av_log(s, AV_LOG_ERROR, "Unable to open %s for writing\n", temp_filename);
+ return ret;
+ }
+ avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
+ avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
+ "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
+ "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
+ "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
+ "\tprofiles=\"urn:mpeg:dash:profile:isoff-live:2011\"\n"
+ "\ttype=\"%s\"\n", final ? "static" : "dynamic");
+ if (final) {
+ avio_printf(out, "\tmediaPresentationDuration=\"");
+ write_time(out, c->total_duration);
+ avio_printf(out, "\"\n");
+ } else {
+ int update_period = c->last_duration / AV_TIME_BASE;
+ if (c->use_template && !c->use_timeline)
+ update_period = 500;
+ avio_printf(out, "\tminimumUpdatePeriod=\"PT%dS\"\n", update_period);
+ avio_printf(out, "\tsuggestedPresentationDelay=\"PT%dS\"\n", c->last_duration / AV_TIME_BASE);
+ if (!c->availability_start_time[0] && s->nb_streams > 0 && c->streams[0].nb_segments > 0) {
+ time_t t = time(NULL);
+ struct tm *ptm, tmbuf;
+ ptm = gmtime_r(&t, &tmbuf);
+ if (ptm) {
+ if (!strftime(c->availability_start_time, sizeof(c->availability_start_time),
+ "%Y-%m-%dT%H:%M:%S", ptm))
+ c->availability_start_time[0] = '\0';
+ }
+ }
+ if (c->availability_start_time[0])
+ avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
+ if (c->window_size && c->use_template) {
+ avio_printf(out, "\ttimeShiftBufferDepth=\"");
+ write_time(out, c->last_duration * c->window_size);
+ avio_printf(out, "\"\n");
+ }
+ }
+ avio_printf(out, "\tminBufferTime=\"");
+ write_time(out, c->last_duration);
+ avio_printf(out, "\">\n");
+ avio_printf(out, "\t<ProgramInformation>\n");
+ if (title) {
+ char *escaped = xmlescape(title->value);
+ avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
+ av_free(escaped);
+ }
+ avio_printf(out, "\t</ProgramInformation>\n");
+ if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
+ OutputStream *os = &c->streams[0];
+ int start_index = FFMAX(os->nb_segments - c->window_size, 0);
+ int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
+ avio_printf(out, "\t<Period start=\"");
+ write_time(out, start_time);
+ avio_printf(out, "\">\n");
+ } else {
+ avio_printf(out, "\t<Period start=\"PT0.0S\">\n");
+ }
+
+ if (c->has_video) {
+ avio_printf(out, "\t\t<AdaptationSet id=\"video\" segmentAlignment=\"true\" bitstreamSwitching=\"true\">\n");
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ OutputStream *os = &c->streams[i];
+ if (s->streams[i]->codec->codec_type != AVMEDIA_TYPE_VIDEO)
+ continue;
+ avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/mp4\" codecs=\"%s\" bandwidth=\"%d\" width=\"%d\" height=\"%d\">\n", i, os->codec_str, st->codec->bit_rate, st->codec->width, st->codec->height);
+ output_segment_list(&c->streams[i], out, c);
+ avio_printf(out, "\t\t\t</Representation>\n");
+ }
+ avio_printf(out, "\t\t</AdaptationSet>\n");
+ }
+ if (c->has_audio) {
+ avio_printf(out, "\t\t<AdaptationSet id=\"audio\" segmentAlignment=\"true\" bitstreamSwitching=\"true\">\n");
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ OutputStream *os = &c->streams[i];
+ if (s->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
+ continue;
+ avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/mp4\" codecs=\"%s\" bandwidth=\"%d\" audioSamplingRate=\"%d\">\n", i, os->codec_str, st->codec->bit_rate, st->codec->sample_rate);
+ avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n", st->codec->channels);
+ output_segment_list(&c->streams[i], out, c);
+ avio_printf(out, "\t\t\t</Representation>\n");
+ }
+ avio_printf(out, "\t\t</AdaptationSet>\n");
+ }
+ avio_printf(out, "\t</Period>\n");
+ avio_printf(out, "</MPD>\n");
+ avio_flush(out);
+ avio_close(out);
- ret = ff_rename(temp_path, full_path);
++ return ff_rename(temp_filename, s->filename, s);
+ }
+
+ static int dash_write_header(AVFormatContext *s)
+ {
+ DASHContext *c = s->priv_data;
+ int ret = 0, i;
+ AVOutputFormat *oformat;
+ char *ptr;
+ char basename[1024];
+
+ if (c->single_file)
+ c->use_template = 0;
+
+ av_strlcpy(c->dirname, s->filename, sizeof(c->dirname));
+ ptr = strrchr(c->dirname, '/');
+ if (ptr) {
+ av_strlcpy(basename, &ptr[1], sizeof(basename));
+ ptr[1] = '\0';
+ } else {
+ c->dirname[0] = '\0';
+ av_strlcpy(basename, s->filename, sizeof(basename));
+ }
+
+ ptr = strrchr(basename, '.');
+ if (ptr)
+ *ptr = '\0';
+
+ oformat = av_guess_format("mp4", NULL, NULL);
+ if (!oformat) {
+ ret = AVERROR_MUXER_NOT_FOUND;
+ goto fail;
+ }
+
+ c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
+ if (!c->streams) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ for (i = 0; i < s->nb_streams; i++) {
+ OutputStream *os = &c->streams[i];
+ AVFormatContext *ctx;
+ AVStream *st;
+ AVDictionary *opts = NULL;
+ char filename[1024];
+
+ if (!s->streams[i]->codec->bit_rate) {
+ av_log(s, AV_LOG_ERROR, "No bit rate set for stream %d\n", i);
+ ret = AVERROR(EINVAL);
+ goto fail;
+ }
+
+ ctx = avformat_alloc_context();
+ if (!ctx) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ os->ctx = ctx;
+ ctx->oformat = oformat;
+ ctx->interrupt_callback = s->interrupt_callback;
+
+ if (!(st = avformat_new_stream(ctx, NULL))) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ avcodec_copy_context(st->codec, s->streams[i]->codec);
+ st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
+ st->time_base = s->streams[i]->time_base;
+ ctx->avoid_negative_ts = s->avoid_negative_ts;
+
+ ctx->pb = avio_alloc_context(os->iobuf, sizeof(os->iobuf), AVIO_FLAG_WRITE, os, NULL, dash_write, NULL);
+ if (!ctx->pb) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ if (c->single_file)
+ snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.m4s", basename, i);
+ else
+ snprintf(os->initfile, sizeof(os->initfile), "init-stream%d.m4s", i);
+ snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
+ ret = ffurl_open(&os->out, filename, AVIO_FLAG_WRITE, &s->interrupt_callback, NULL);
+ if (ret < 0)
+ goto fail;
+ os->init_start_pos = 0;
+
+ av_dict_set(&opts, "movflags", "frag_custom+dash", 0);
+ if ((ret = avformat_write_header(ctx, &opts)) < 0) {
+ goto fail;
+ }
+ os->ctx_inited = 1;
+ avio_flush(ctx->pb);
+ av_dict_free(&opts);
+
+ if (c->single_file) {
+ os->init_range_length = avio_tell(ctx->pb);
+ } else {
+ ffurl_close(os->out);
+ os->out = NULL;
+ }
+
+ s->streams[i]->time_base = st->time_base;
+ // If the muxer wants to shift timestamps, request to have them shifted
+ // already before being handed to this muxer, so we don't have mismatches
+ // between the MPD and the actual segments.
+ s->avoid_negative_ts = ctx->avoid_negative_ts;
+ if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
+ c->has_video = 1;
+ else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
+ c->has_audio = 1;
+
+ set_codec_str(s, os->ctx->streams[0]->codec, os->codec_str, sizeof(os->codec_str));
+ os->first_dts = AV_NOPTS_VALUE;
+ os->segment_index = 1;
+ }
+
+ if (!c->has_video && c->min_seg_duration <= 0) {
+ av_log(s, AV_LOG_WARNING, "no video stream and no min seg duration set\n");
+ ret = AVERROR(EINVAL);
+ }
+ ret = write_manifest(s, 0);
+
+ fail:
+ if (ret)
+ dash_free(s);
+ return ret;
+ }
+
+ static int add_segment(OutputStream *os, const char *file,
+ int64_t time, int duration,
+ int64_t start_pos, int64_t range_length,
+ int64_t index_length)
+ {
+ int err;
+ Segment *seg;
+ if (os->nb_segments >= os->segments_size) {
+ os->segments_size = (os->segments_size + 1) * 2;
+ if ((err = av_reallocp(&os->segments, sizeof(*os->segments) *
+ os->segments_size)) < 0) {
+ os->segments_size = 0;
+ os->nb_segments = 0;
+ return err;
+ }
+ }
+ seg = av_mallocz(sizeof(*seg));
+ if (!seg)
+ return AVERROR(ENOMEM);
+ av_strlcpy(seg->file, file, sizeof(seg->file));
+ seg->time = time;
+ seg->duration = duration;
+ seg->start_pos = start_pos;
+ seg->range_length = range_length;
+ seg->index_length = index_length;
+ os->segments[os->nb_segments++] = seg;
+ os->segment_index++;
+ return 0;
+ }
+
+ static void write_styp(AVIOContext *pb)
+ {
+ avio_wb32(pb, 24);
+ ffio_wfourcc(pb, "styp");
+ ffio_wfourcc(pb, "msdh");
+ avio_wb32(pb, 0); /* minor */
+ ffio_wfourcc(pb, "msdh");
+ ffio_wfourcc(pb, "msix");
+ }
+
+ static void find_index_range(AVFormatContext *s, const char *dirname,
+ const char *filename, int64_t pos,
+ int *index_length)
+ {
+ char full_path[1024];
+ uint8_t buf[8];
+ URLContext *fd;
+ int ret;
+
+ snprintf(full_path, sizeof(full_path), "%s%s", dirname, filename);
+ ret = ffurl_open(&fd, full_path, AVIO_FLAG_READ, &s->interrupt_callback, NULL);
+ if (ret < 0)
+ return;
+ if (ffurl_seek(fd, pos, SEEK_SET) != pos) {
+ ffurl_close(fd);
+ return;
+ }
+ ret = ffurl_read(fd, buf, 8);
+ ffurl_close(fd);
+ if (ret < 8)
+ return;
+ if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
+ return;
+ *index_length = AV_RB32(&buf[0]);
+ }
+
+ static int dash_flush(AVFormatContext *s, int final)
+ {
+ DASHContext *c = s->priv_data;
+ int i, ret = 0;
+
+ for (i = 0; i < s->nb_streams; i++) {
+ OutputStream *os = &c->streams[i];
+ char filename[1024] = "", full_path[1024], temp_path[1024];
+ int64_t start_pos = avio_tell(os->ctx->pb);
+ int range_length, index_length = 0;
+
+ if (!os->packets_written)
+ continue;
+
+ if (!c->single_file) {
+ snprintf(filename, sizeof(filename), "chunk-stream%d-%05d.m4s", i, os->segment_index);
+ snprintf(full_path, sizeof(full_path), "%s%s", c->dirname, filename);
+ snprintf(temp_path, sizeof(temp_path), "%s.tmp", full_path);
+ ret = ffurl_open(&os->out, temp_path, AVIO_FLAG_WRITE, &s->interrupt_callback, NULL);
+ if (ret < 0)
+ break;
+ write_styp(os->ctx->pb);
+ }
+ av_write_frame(os->ctx, NULL);
+ avio_flush(os->ctx->pb);
+ os->packets_written = 0;
+
+ range_length = avio_tell(os->ctx->pb) - start_pos;
+ if (c->single_file) {
+ find_index_range(s, c->dirname, os->initfile, start_pos, &index_length);
+ } else {
+ ffurl_close(os->out);
+ os->out = NULL;
- return ff_write_chained(os->ctx, 0, pkt, s);
++ ret = ff_rename(temp_path, full_path, s);
+ if (ret < 0)
+ break;
+ }
+ add_segment(os, filename, os->start_dts, os->end_dts - os->start_dts, start_pos, range_length, index_length);
+ }
+
+ if (c->window_size || (final && c->remove_at_exit)) {
+ for (i = 0; i < s->nb_streams; i++) {
+ OutputStream *os = &c->streams[i];
+ int j;
+ int remove = os->nb_segments - c->window_size - c->extra_window_size;
+ if (final && c->remove_at_exit)
+ remove = os->nb_segments;
+ if (remove > 0) {
+ for (j = 0; j < remove; j++) {
+ char filename[1024];
+ snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->segments[j]->file);
+ unlink(filename);
+ av_free(os->segments[j]);
+ }
+ os->nb_segments -= remove;
+ memmove(os->segments, os->segments + remove, os->nb_segments * sizeof(*os->segments));
+ }
+ }
+ }
+
+ if (ret >= 0)
+ ret = write_manifest(s, final);
+ return ret;
+ }
+
+ static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
+ {
+ DASHContext *c = s->priv_data;
+ AVStream *st = s->streams[pkt->stream_index];
+ OutputStream *os = &c->streams[pkt->stream_index];
+ int64_t seg_end_duration = (c->nb_segments + 1) * (int64_t) c->min_seg_duration;
+ int ret;
+
+ // If forcing the stream to start at 0, the mp4 muxer will set the start
+ // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
+ if (os->first_dts == AV_NOPTS_VALUE &&
+ s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
+ pkt->pts -= pkt->dts;
+ pkt->dts = 0;
+ }
+
+ if (os->first_dts == AV_NOPTS_VALUE)
+ os->first_dts = pkt->dts;
+
+ if ((!c->has_video || st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
+ pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
+ av_compare_ts(pkt->dts - os->first_dts, st->time_base,
+ seg_end_duration, AV_TIME_BASE_Q) >= 0) {
+ int64_t prev_duration = c->last_duration;
+
+ c->last_duration = av_rescale_q(pkt->dts - os->start_dts,
+ st->time_base,
+ AV_TIME_BASE_Q);
+ c->total_duration = av_rescale_q(pkt->dts - os->first_dts,
+ st->time_base,
+ AV_TIME_BASE_Q);
+
+ if ((!c->use_timeline || !c->use_template) && prev_duration) {
+ if (c->last_duration < prev_duration*9/10 ||
+ c->last_duration > prev_duration*11/10) {
+ av_log(s, AV_LOG_WARNING,
+ "Segment durations differ too much, enable use_timeline "
+ "and use_template, or keep a stricter keyframe interval\n");
+ }
+ }
+
+ if ((ret = dash_flush(s, 0)) < 0)
+ return ret;
+ c->nb_segments++;
+ }
+
+ if (!os->packets_written)
+ os->start_dts = pkt->dts;
+ os->end_dts = pkt->dts + pkt->duration;
+ os->packets_written++;
++ return ff_write_chained(os->ctx, 0, pkt, s, 0);
+ }
+
+ static int dash_write_trailer(AVFormatContext *s)
+ {
+ DASHContext *c = s->priv_data;
+
+ if (s->nb_streams > 0) {
+ OutputStream *os = &c->streams[0];
+ // If no segments have been written so far, try to do a crude
+ // guess of the segment duration
+ if (!c->last_duration)
+ c->last_duration = av_rescale_q(os->end_dts - os->start_dts,
+ s->streams[0]->time_base,
+ AV_TIME_BASE_Q);
+ c->total_duration = av_rescale_q(os->end_dts - os->first_dts,
+ s->streams[0]->time_base,
+ AV_TIME_BASE_Q);
+ }
+ dash_flush(s, 1);
+
+ if (c->remove_at_exit) {
+ char filename[1024];
+ int i;
+ for (i = 0; i < s->nb_streams; i++) {
+ OutputStream *os = &c->streams[i];
+ snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
+ unlink(filename);
+ }
+ unlink(s->filename);
+ }
+
+ dash_free(s);
+ return 0;
+ }
+
+ #define OFFSET(x) offsetof(DASHContext, x)
+ #define E AV_OPT_FLAG_ENCODING_PARAM
+ static const AVOption options[] = {
+ { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
+ { "extra_window_size", "number of segments kept outside of the manifest before removing from disk", OFFSET(extra_window_size), AV_OPT_TYPE_INT, { .i64 = 5 }, 0, INT_MAX, E },
+ { "min_seg_duration", "minimum segment duration (in microseconds)", OFFSET(min_seg_duration), AV_OPT_TYPE_INT64, { .i64 = 5000000 }, 0, INT_MAX, E },
+ { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, E },
+ { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E },
+ { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E },
+ { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, E },
+ { NULL },
+ };
+
+ static const AVClass dash_class = {
+ .class_name = "dash muxer",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+ };
+
+ AVOutputFormat ff_dash_muxer = {
+ .name = "dash",
+ .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
+ .priv_data_size = sizeof(DASHContext),
+ .audio_codec = AV_CODEC_ID_AAC,
+ .video_codec = AV_CODEC_ID_H264,
+ .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
+ .write_header = dash_write_header,
+ .write_packet = dash_write_packet,
+ .write_trailer = dash_write_trailer,
+ .codec_tag = (const AVCodecTag* const []){ ff_mp4_obj_type, 0 },
+ .priv_class = &dash_class,
+ };