2 * MPEG2 transport stream (aka DVB) muxer
3 * Copyright (c) 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/bswap.h"
23 #include "libavutil/crc.h"
24 #include "libavcodec/mpegvideo.h"
28 /* write DVB SI sections */
30 /*********************************************/
31 /* mpegts section writer */
33 typedef struct MpegTSSection {
36 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
40 typedef struct MpegTSService {
41 MpegTSSection pmt; /* MPEG2 pmt table context */
42 int sid; /* service ID */
47 int pcr_packet_period;
50 typedef struct MpegTSWrite {
51 MpegTSSection pat; /* MPEG2 pat table */
52 MpegTSSection sdt; /* MPEG2 sdt table context */
53 MpegTSService **services;
55 int sdt_packet_period;
57 int pat_packet_period;
65 /* NOTE: 4 bytes must be left at the end for the crc32 */
66 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
68 MpegTSWrite *ts = ((AVFormatContext*)s->opaque)->priv_data;
70 unsigned char packet[TS_PACKET_SIZE];
71 const unsigned char *buf_ptr;
73 int first, b, len1, left;
75 crc = bswap_32(av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1, buf, len - 4));
76 buf[len - 4] = (crc >> 24) & 0xff;
77 buf[len - 3] = (crc >> 16) & 0xff;
78 buf[len - 2] = (crc >> 8) & 0xff;
79 buf[len - 1] = (crc) & 0xff;
81 /* send each packet */
84 first = (buf == buf_ptr);
92 s->cc = (s->cc + 1) & 0xf;
95 *q++ = 0; /* 0 offset */
96 len1 = TS_PACKET_SIZE - (q - packet);
99 memcpy(q, buf_ptr, len1);
101 /* add known padding data */
102 left = TS_PACKET_SIZE - (q - packet);
104 memset(q, 0xff, left);
106 s->write_packet(s, packet);
111 ts->cur_pcr += TS_PACKET_SIZE*8*90000LL/ts->mux_rate;
115 static inline void put16(uint8_t **q_ptr, int val)
124 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
125 int version, int sec_num, int last_sec_num,
126 uint8_t *buf, int len)
128 uint8_t section[1024], *q;
129 unsigned int tot_len;
131 tot_len = 3 + 5 + len + 4;
132 /* check if not too big */
138 put16(&q, 0xb000 | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
140 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
145 mpegts_write_section(s, section, tot_len);
149 /*********************************************/
152 #define DEFAULT_PMT_START_PID 0x1000
153 #define DEFAULT_START_PID 0x0100
154 #define DEFAULT_PROVIDER_NAME "FFmpeg"
155 #define DEFAULT_SERVICE_NAME "Service01"
157 /* default network id, transport stream and service identifiers */
158 #define DEFAULT_ONID 0x0001
159 #define DEFAULT_TSID 0x0001
160 #define DEFAULT_SID 0x0001
162 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
163 #define DEFAULT_PES_HEADER_FREQ 16
164 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
166 /* we retransmit the SI info at this rate */
167 #define SDT_RETRANS_TIME 500
168 #define PAT_RETRANS_TIME 100
169 #define PCR_RETRANS_TIME 20
171 typedef struct MpegTSWriteStream {
172 struct MpegTSService *service;
173 int pid; /* stream associated pid */
176 int first_pts_check; ///< first pts check needed
179 uint8_t payload[DEFAULT_PES_PAYLOAD_SIZE];
182 static void mpegts_write_pat(AVFormatContext *s)
184 MpegTSWrite *ts = s->priv_data;
185 MpegTSService *service;
186 uint8_t data[1012], *q;
190 for(i = 0; i < ts->nb_services; i++) {
191 service = ts->services[i];
192 put16(&q, service->sid);
193 put16(&q, 0xe000 | service->pmt.pid);
195 mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, 0, 0, 0,
199 static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
201 // MpegTSWrite *ts = s->priv_data;
202 uint8_t data[1012], *q, *desc_length_ptr, *program_info_length_ptr;
203 int val, stream_type, i;
206 put16(&q, 0xe000 | service->pcr_pid);
208 program_info_length_ptr = q;
209 q += 2; /* patched after */
211 /* put program info here */
213 val = 0xf000 | (q - program_info_length_ptr - 2);
214 program_info_length_ptr[0] = val >> 8;
215 program_info_length_ptr[1] = val;
217 for(i = 0; i < s->nb_streams; i++) {
218 AVStream *st = s->streams[i];
219 MpegTSWriteStream *ts_st = st->priv_data;
220 AVMetadataTag *lang = av_metadata_get(st->metadata, "language", NULL,0);
221 switch(st->codec->codec_id) {
222 case CODEC_ID_MPEG1VIDEO:
223 case CODEC_ID_MPEG2VIDEO:
224 stream_type = STREAM_TYPE_VIDEO_MPEG2;
227 stream_type = STREAM_TYPE_VIDEO_MPEG4;
230 stream_type = STREAM_TYPE_VIDEO_H264;
233 stream_type = STREAM_TYPE_VIDEO_DIRAC;
237 stream_type = STREAM_TYPE_AUDIO_MPEG1;
240 stream_type = STREAM_TYPE_AUDIO_AAC;
243 stream_type = STREAM_TYPE_AUDIO_AC3;
246 stream_type = STREAM_TYPE_PRIVATE_DATA;
250 put16(&q, 0xe000 | ts_st->pid);
252 q += 2; /* patched after */
254 /* write optional descriptors here */
255 switch(st->codec->codec_type) {
256 case CODEC_TYPE_AUDIO:
257 if (lang && strlen(lang->value) == 3) {
258 *q++ = 0x0a; /* ISO 639 language descriptor */
260 *q++ = lang->value[0];
261 *q++ = lang->value[1];
262 *q++ = lang->value[2];
263 *q++ = 0; /* undefined type */
266 case CODEC_TYPE_SUBTITLE:
268 const char *language;
269 language = lang && strlen(lang->value)==3 ? lang->value : "eng";
275 *q++ = 0x10; /* normal subtitles (0x20 = if hearing pb) */
276 put16(&q, 1); /* page id */
277 put16(&q, 1); /* ancillary page id */
280 case CODEC_TYPE_VIDEO:
281 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
282 *q++ = 0x05; /*MPEG-2 registration descriptor*/
292 val = 0xf000 | (q - desc_length_ptr - 2);
293 desc_length_ptr[0] = val >> 8;
294 desc_length_ptr[1] = val;
296 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, 0, 0, 0,
300 /* NOTE: str == NULL is accepted for an empty string */
301 static void putstr8(uint8_t **q_ptr, const char *str)
317 static void mpegts_write_sdt(AVFormatContext *s)
319 MpegTSWrite *ts = s->priv_data;
320 MpegTSService *service;
321 uint8_t data[1012], *q, *desc_list_len_ptr, *desc_len_ptr;
322 int i, running_status, free_ca_mode, val;
327 for(i = 0; i < ts->nb_services; i++) {
328 service = ts->services[i];
329 put16(&q, service->sid);
330 *q++ = 0xfc | 0x00; /* currently no EIT info */
331 desc_list_len_ptr = q;
333 running_status = 4; /* running */
336 /* write only one descriptor for the service name and provider */
340 *q++ = 0x01; /* digital television service */
341 putstr8(&q, service->provider_name);
342 putstr8(&q, service->name);
343 desc_len_ptr[0] = q - desc_len_ptr - 1;
345 /* fill descriptor length */
346 val = (running_status << 13) | (free_ca_mode << 12) |
347 (q - desc_list_len_ptr - 2);
348 desc_list_len_ptr[0] = val >> 8;
349 desc_list_len_ptr[1] = val;
351 mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, 0, 0, 0,
355 static MpegTSService *mpegts_add_service(MpegTSWrite *ts,
357 const char *provider_name,
360 MpegTSService *service;
362 service = av_mallocz(sizeof(MpegTSService));
365 service->pmt.pid = DEFAULT_PMT_START_PID + ts->nb_services - 1;
367 service->provider_name = av_strdup(provider_name);
368 service->name = av_strdup(name);
369 service->pcr_pid = 0x1fff;
370 dynarray_add(&ts->services, &ts->nb_services, service);
374 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
376 AVFormatContext *ctx = s->opaque;
377 put_buffer(ctx->pb, packet, TS_PACKET_SIZE);
380 static int mpegts_write_header(AVFormatContext *s)
382 MpegTSWrite *ts = s->priv_data;
383 MpegTSWriteStream *ts_st;
384 MpegTSService *service;
386 AVMetadataTag *title;
387 int i, total_bit_rate;
388 const char *service_name;
389 uint64_t sdt_size, pat_pmt_size, pos;
391 ts->tsid = DEFAULT_TSID;
392 ts->onid = DEFAULT_ONID;
393 /* allocate a single DVB service */
394 title = av_metadata_get(s->metadata, "title", NULL, 0);
395 service_name = title ? title->value : DEFAULT_SERVICE_NAME;
396 service = mpegts_add_service(ts, DEFAULT_SID,
397 DEFAULT_PROVIDER_NAME, service_name);
398 service->pmt.write_packet = section_write_packet;
399 service->pmt.opaque = s;
401 ts->pat.pid = PAT_PID;
402 ts->pat.cc = 15; // Initialize at 15 so that it wraps and be equal to 0 for the first packet we write
403 ts->pat.write_packet = section_write_packet;
406 ts->sdt.pid = SDT_PID;
408 ts->sdt.write_packet = section_write_packet;
411 /* assign pids to each stream */
413 for(i = 0;i < s->nb_streams; i++) {
415 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
418 st->priv_data = ts_st;
419 ts_st->service = service;
420 ts_st->pid = DEFAULT_START_PID + i;
421 ts_st->payload_pts = AV_NOPTS_VALUE;
422 ts_st->payload_dts = AV_NOPTS_VALUE;
423 ts_st->first_pts_check = 1;
425 /* update PCR pid by using the first video stream */
426 if (st->codec->codec_type == CODEC_TYPE_VIDEO &&
427 service->pcr_pid == 0x1fff)
428 service->pcr_pid = ts_st->pid;
429 if (st->codec->rc_max_rate)
430 total_bit_rate += st->codec->rc_max_rate;
432 if (!st->codec->bit_rate) {
433 av_log(s, AV_LOG_WARNING,
434 "stream %d, bit rate is not set, this will cause problems\n",
437 total_bit_rate += st->codec->bit_rate;
439 /* PES header size */
440 if (st->codec->codec_type == CODEC_TYPE_VIDEO ||
441 st->codec->codec_type == CODEC_TYPE_SUBTITLE) {
443 * 19 bytes of PES header
444 * on average a half TS-packet (184/2) of padding-overhead every PES */
445 total_bit_rate += (19 + 184/2)*8 / av_q2d(st->codec->time_base);
447 /* 1 PES per DEFAULT_PES_PAYLOAD_SIZE bytes of audio data
448 * 14 bytes of PES header
449 * on average a half TS-packet (184/2) of padding-overhead every PES */
450 total_bit_rate += (14 + 184/2) *
451 st->codec->bit_rate / DEFAULT_PES_PAYLOAD_SIZE;
455 /* if no video stream, use the first stream as PCR */
456 if (service->pcr_pid == 0x1fff && s->nb_streams > 0) {
457 ts_st = s->streams[0]->priv_data;
458 service->pcr_pid = ts_st->pid;
461 ts->mux_rate = 1; // avoid div by 0
463 /* write info at the start of the file, so that it will be fast to
465 pos = url_ftell(s->pb);
467 sdt_size = url_ftell(s->pb) - pos;
468 pos = url_ftell(s->pb);
470 for(i = 0; i < ts->nb_services; i++) {
471 mpegts_write_pmt(s, ts->services[i]);
473 pat_pmt_size = url_ftell(s->pb) - pos;
475 if (total_bit_rate <= 8 * 1024)
476 total_bit_rate = 8 * 1024;
479 total_bit_rate * 4 / (TS_PACKET_SIZE-4) + /* TS header size */
480 1000 * 8 * sdt_size / SDT_RETRANS_TIME + /* SDT size */
481 1000 * 8 * pat_pmt_size / PAT_RETRANS_TIME + /* PAT+PMT size */
482 1000 * 8 * 8 / PCR_RETRANS_TIME; /* PCR size */
485 ts->mux_rate = s->mux_rate;
487 ts->mux_rate = total_bit_rate;
489 service->pcr_packet_period = (ts->mux_rate * PCR_RETRANS_TIME) /
490 (TS_PACKET_SIZE * 8 * 1000);
491 ts->sdt_packet_period = (ts->mux_rate * SDT_RETRANS_TIME) /
492 (TS_PACKET_SIZE * 8 * 1000);
493 ts->pat_packet_period = (ts->mux_rate * PAT_RETRANS_TIME) /
494 (TS_PACKET_SIZE * 8 * 1000);
496 // output a PCR as soon as possible
497 service->pcr_packet_count = service->pcr_packet_period;
499 av_log(s, AV_LOG_DEBUG,
500 "calculated bitrate %d bps, muxrate %d bps, "
501 "sdt every %d, pat/pmt every %d pkts\n",
502 total_bit_rate, ts->mux_rate, ts->sdt_packet_period,
503 ts->pat_packet_period);
506 ts->cur_pcr /= ts->mux_rate;
508 put_flush_packet(s->pb);
513 for(i = 0;i < s->nb_streams; i++) {
515 av_free(st->priv_data);
520 /* send SDT, PAT and PMT tables regulary */
521 static void retransmit_si_info(AVFormatContext *s)
523 MpegTSWrite *ts = s->priv_data;
526 if (++ts->sdt_packet_count == ts->sdt_packet_period) {
527 ts->sdt_packet_count = 0;
530 if (++ts->pat_packet_count == ts->pat_packet_period) {
531 ts->pat_packet_count = 0;
533 for(i = 0; i < ts->nb_services; i++) {
534 mpegts_write_pmt(s, ts->services[i]);
539 /* Write a single null transport stream packet */
540 static void mpegts_insert_null_packet(AVFormatContext *s)
542 MpegTSWrite *ts = s->priv_data;
544 uint8_t buf[TS_PACKET_SIZE];
551 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
552 put_buffer(s->pb, buf, TS_PACKET_SIZE);
553 ts->cur_pcr += TS_PACKET_SIZE*8*90000LL/ts->mux_rate;
556 /* Write a single transport stream packet with a PCR and no payload */
557 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
559 MpegTSWrite *ts = s->priv_data;
560 MpegTSWriteStream *ts_st = st->priv_data;
562 uint64_t pcr = ts->cur_pcr;
563 uint8_t buf[TS_PACKET_SIZE];
567 *q++ = ts_st->pid >> 8;
569 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
570 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
571 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
572 *q++ = 0x10; /* Adaptation flags: PCR present */
574 /* PCR coded into 6 bytes */
579 *q++ = (pcr & 1) << 7;
583 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
584 put_buffer(s->pb, buf, TS_PACKET_SIZE);
585 ts->cur_pcr += TS_PACKET_SIZE*8*90000LL/ts->mux_rate;
588 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
592 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
594 val = (((pts >> 15) & 0x7fff) << 1) | 1;
597 val = (((pts) & 0x7fff) << 1) | 1;
602 /* Add a pes header to the front of payload, and segment into an integer number of
603 * ts packets. The final ts packet is padded using an over-sized adaptation header
604 * to exactly fill the last ts packet.
605 * NOTE: 'payload' contains a complete PES payload.
607 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
608 const uint8_t *payload, int payload_size,
609 int64_t pts, int64_t dts)
611 MpegTSWriteStream *ts_st = st->priv_data;
612 MpegTSWrite *ts = s->priv_data;
613 uint8_t buf[TS_PACKET_SIZE];
615 int val, is_start, len, header_len, write_pcr, private_code, flags;
616 int afc_len, stuffing_len;
617 int64_t pcr = -1; /* avoid warning */
618 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
621 while (payload_size > 0) {
622 retransmit_si_info(s);
625 if (ts_st->pid == ts_st->service->pcr_pid) {
626 ts_st->service->pcr_packet_count++;
627 if (ts_st->service->pcr_packet_count >=
628 ts_st->service->pcr_packet_period) {
629 ts_st->service->pcr_packet_count = 0;
634 if (dts != AV_NOPTS_VALUE && (dts - (int64_t)ts->cur_pcr) > delay) {
635 /* pcr insert gets priority over null packet insert */
637 mpegts_insert_pcr_only(s, st);
639 mpegts_insert_null_packet(s);
640 continue; /* recalculate write_pcr and possibly retransmit si_info */
643 /* prepare packet header */
646 val = (ts_st->pid >> 8);
651 ts_st->cc = (ts_st->cc + 1) & 0xf;
652 *q++ = 0x10 | ts_st->cc | (write_pcr ? 0x20 : 0);
654 // add 11, pcr references the last byte of program clock reference base
655 pcr = ts->cur_pcr + (4+7)*8*90000LL / ts->mux_rate;
656 if (dts != AV_NOPTS_VALUE && dts < pcr)
657 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
658 *q++ = 7; /* AFC length */
659 *q++ = 0x10; /* flags: PCR present */
664 *q++ = (pcr & 1) << 7;
668 int pes_extension = 0;
669 /* write PES header */
674 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
675 if (st->codec->codec_id == CODEC_ID_DIRAC) {
679 } else if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
680 (st->codec->codec_id == CODEC_ID_MP2 ||
681 st->codec->codec_id == CODEC_ID_MP3)) {
685 if (st->codec->codec_type == CODEC_TYPE_SUBTITLE) {
691 if (pts != AV_NOPTS_VALUE) {
695 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
699 if (st->codec->codec_type == CODEC_TYPE_VIDEO &&
700 st->codec->codec_id == CODEC_ID_DIRAC) {
701 /* set PES_extension_flag */
706 * One byte for PES2 extension flag +
707 * one byte for extension length +
708 * one byte for extension id
712 len = payload_size + header_len + 3;
713 if (private_code != 0)
720 /* data alignment indicator is required for subtitle data */
721 if (st->codec->codec_type == CODEC_TYPE_SUBTITLE)
726 if (pts != AV_NOPTS_VALUE) {
727 write_pts(q, flags >> 6, pts);
730 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
731 write_pts(q, 1, dts);
734 if (pes_extension && st->codec->codec_id == CODEC_ID_DIRAC) {
735 flags = 0x01; /* set PES_extension_flag_2 */
737 *q++ = 0x80 | 0x01; /* marker bit + extension length */
739 * Set the stream id extension flag bit to 0 and
740 * write the extended stream id
744 if (private_code != 0)
749 header_len = q - buf;
751 len = TS_PACKET_SIZE - header_len;
752 if (len > payload_size)
754 stuffing_len = TS_PACKET_SIZE - header_len - len;
755 if (stuffing_len > 0) {
756 /* add stuffing with AFC */
758 /* stuffing already present: increase its size */
759 afc_len = buf[4] + 1;
760 memmove(buf + 4 + afc_len + stuffing_len,
762 header_len - (4 + afc_len));
763 buf[4] += stuffing_len;
764 memset(buf + 4 + afc_len, 0xff, stuffing_len);
767 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
769 buf[4] = stuffing_len - 1;
770 if (stuffing_len >= 2) {
772 memset(buf + 6, 0xff, stuffing_len - 2);
776 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
779 put_buffer(s->pb, buf, TS_PACKET_SIZE);
780 ts->cur_pcr += TS_PACKET_SIZE*8*90000LL/ts->mux_rate;
782 put_flush_packet(s->pb);
785 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
787 AVStream *st = s->streams[pkt->stream_index];
788 int size = pkt->size;
789 uint8_t *buf= pkt->data;
791 MpegTSWriteStream *ts_st = st->priv_data;
792 const uint64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
793 int64_t dts = AV_NOPTS_VALUE, pts = AV_NOPTS_VALUE;
795 if (pkt->pts != AV_NOPTS_VALUE)
796 pts = pkt->pts + delay;
797 if (pkt->dts != AV_NOPTS_VALUE)
798 dts = pkt->dts + delay;
800 if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) {
801 av_log(s, AV_LOG_ERROR, "first pts value must set\n");
804 ts_st->first_pts_check = 0;
806 if (st->codec->codec_id == CODEC_ID_H264) {
807 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001) {
808 av_log(s, AV_LOG_ERROR, "h264 bitstream malformated\n");
811 if (pkt->data[4] != 0x09) { // AUD NAL
812 data = av_malloc(pkt->size+6);
815 memcpy(data+6, pkt->data, pkt->size);
816 AV_WB32(data, 0x00000001);
818 data[5] = 0xe0; // any slice type
824 if (st->codec->codec_type != CODEC_TYPE_AUDIO) {
825 // for video and subtitle, write a single pes packet
826 mpegts_write_pes(s, st, buf, size, pts, dts);
831 if (ts_st->payload_index + size > DEFAULT_PES_PAYLOAD_SIZE) {
832 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index,
833 ts_st->payload_pts, ts_st->payload_dts);
834 ts_st->payload_index = 0;
837 if (!ts_st->payload_index) {
838 ts_st->payload_pts = pts;
839 ts_st->payload_dts = dts;
842 memcpy(ts_st->payload + ts_st->payload_index, buf, size);
843 ts_st->payload_index += size;
848 static int mpegts_write_end(AVFormatContext *s)
850 MpegTSWrite *ts = s->priv_data;
851 MpegTSWriteStream *ts_st;
852 MpegTSService *service;
856 /* flush current packets */
857 for(i = 0; i < s->nb_streams; i++) {
859 ts_st = st->priv_data;
860 if (ts_st->payload_index > 0) {
861 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index,
862 ts_st->payload_pts, ts_st->payload_dts);
865 put_flush_packet(s->pb);
867 for(i = 0; i < ts->nb_services; i++) {
868 service = ts->services[i];
869 av_freep(&service->provider_name);
870 av_freep(&service->name);
873 av_free(ts->services);
878 AVOutputFormat mpegts_muxer = {
880 NULL_IF_CONFIG_SMALL("MPEG-2 transport stream format"),