2 * MPEG-2 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/avassert.h"
23 #include "libavutil/bswap.h"
24 #include "libavutil/crc.h"
25 #include "libavutil/dict.h"
26 #include "libavutil/intreadwrite.h"
27 #include "libavutil/mathematics.h"
28 #include "libavutil/opt.h"
30 #include "libavcodec/internal.h"
33 #include "avio_internal.h"
37 #define PCR_TIME_BASE 27000000
39 /* write DVB SI sections */
41 #define DVB_PRIVATE_NETWORK_START 0xff01
43 /*********************************************/
44 /* mpegts section writer */
46 typedef struct MpegTSSection {
50 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
54 typedef struct MpegTSService {
55 MpegTSSection pmt; /* MPEG-2 PMT table context */
56 int sid; /* service ID */
58 uint8_t provider_name[256];
63 // service_type values as defined in ETSI 300 468
65 MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
66 MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
67 MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
68 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
69 MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
70 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16,
71 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19,
72 MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV = 0x1F,
74 typedef struct MpegTSWrite {
75 const AVClass *av_class;
76 MpegTSSection pat; /* MPEG-2 PAT table */
77 MpegTSSection sdt; /* MPEG-2 SDT table context */
78 MpegTSService **services;
79 int64_t sdt_period; /* SDT period in PCR time base */
80 int64_t pat_period; /* PAT/PMT period in PCR time base */
86 int mux_rate; ///< set to 1 when VBR
89 int transport_stream_id;
90 int original_network_id;
100 int m2ts_textsub_pid;
103 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
104 #define MPEGTS_FLAG_AAC_LATM 0x02
105 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
106 #define MPEGTS_FLAG_SYSTEM_B 0x08
107 #define MPEGTS_FLAG_DISCONT 0x10
111 int64_t pat_period_us;
112 int64_t sdt_period_us;
116 int omit_video_pes_length;
119 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
120 #define DEFAULT_PES_HEADER_FREQ 16
121 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
123 /* The section length is 12 bits. The first 2 are set to 0, the remaining
124 * 10 bits should not exceed 1021. */
125 #define SECTION_LENGTH 1020
127 /* NOTE: 4 bytes must be left at the end for the crc32 */
128 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
131 unsigned char packet[TS_PACKET_SIZE];
132 const unsigned char *buf_ptr;
134 int first, b, len1, left;
136 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
139 buf[len - 4] = (crc >> 24) & 0xff;
140 buf[len - 3] = (crc >> 16) & 0xff;
141 buf[len - 2] = (crc >> 8) & 0xff;
142 buf[len - 1] = crc & 0xff;
144 /* send each packet */
147 first = buf == buf_ptr;
155 s->cc = s->cc + 1 & 0xf;
157 if (s->discontinuity) {
161 s->discontinuity = 0;
164 *q++ = 0; /* 0 offset */
165 len1 = TS_PACKET_SIZE - (q - packet);
168 memcpy(q, buf_ptr, len1);
170 /* add known padding data */
171 left = TS_PACKET_SIZE - (q - packet);
173 memset(q, 0xff, left);
175 s->write_packet(s, packet);
182 static inline void put16(uint8_t **q_ptr, int val)
191 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
192 int version, int sec_num, int last_sec_num,
193 uint8_t *buf, int len)
195 uint8_t section[1024], *q;
196 unsigned int tot_len;
197 /* reserved_future_use field must be set to 1 for SDT */
198 unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000;
200 tot_len = 3 + 5 + len + 4;
201 /* check if not too big */
203 return AVERROR_INVALIDDATA;
207 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
209 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
214 mpegts_write_section(s, section, tot_len);
218 /*********************************************/
221 #define DEFAULT_PROVIDER_NAME "FFmpeg"
222 #define DEFAULT_SERVICE_NAME "Service"
224 /* we retransmit the SI info at this rate */
225 #define SDT_RETRANS_TIME 500
226 #define PAT_RETRANS_TIME 100
227 #define PCR_RETRANS_TIME 20
229 typedef struct MpegTSWriteStream {
230 int pid; /* stream associated pid */
234 int first_pts_check; ///< first pts check needed
235 int prev_payload_key;
240 AVFormatContext *amux;
242 int64_t pcr_period; /* PCR period in PCR time base */
246 int opus_queued_samples;
247 int opus_pending_trim_start;
250 static void mpegts_write_pat(AVFormatContext *s)
252 MpegTSWrite *ts = s->priv_data;
253 MpegTSService *service;
254 uint8_t data[SECTION_LENGTH], *q;
258 for (i = 0; i < ts->nb_services; i++) {
259 service = ts->services[i];
260 put16(&q, service->sid);
261 put16(&q, 0xe000 | service->pmt.pid);
263 mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, ts->tables_version, 0, 0,
267 static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
269 memcpy(*q_ptr, buf, len);
273 static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
276 *q++ = 0x05; /* MPEG-2 registration descriptor*/
285 static int get_dvb_stream_type(AVFormatContext *s, AVStream *st)
287 MpegTSWrite *ts = s->priv_data;
290 switch (st->codecpar->codec_id) {
291 case AV_CODEC_ID_MPEG1VIDEO:
292 case AV_CODEC_ID_MPEG2VIDEO:
293 stream_type = STREAM_TYPE_VIDEO_MPEG2;
295 case AV_CODEC_ID_MPEG4:
296 stream_type = STREAM_TYPE_VIDEO_MPEG4;
298 case AV_CODEC_ID_H264:
299 stream_type = STREAM_TYPE_VIDEO_H264;
301 case AV_CODEC_ID_HEVC:
302 stream_type = STREAM_TYPE_VIDEO_HEVC;
304 case AV_CODEC_ID_CAVS:
305 stream_type = STREAM_TYPE_VIDEO_CAVS;
307 case AV_CODEC_ID_DIRAC:
308 stream_type = STREAM_TYPE_VIDEO_DIRAC;
310 case AV_CODEC_ID_VC1:
311 stream_type = STREAM_TYPE_VIDEO_VC1;
313 case AV_CODEC_ID_MP2:
314 case AV_CODEC_ID_MP3:
315 if ( st->codecpar->sample_rate > 0
316 && st->codecpar->sample_rate < 32000) {
317 stream_type = STREAM_TYPE_AUDIO_MPEG2;
319 stream_type = STREAM_TYPE_AUDIO_MPEG1;
322 case AV_CODEC_ID_AAC:
323 stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
324 ? STREAM_TYPE_AUDIO_AAC_LATM
325 : STREAM_TYPE_AUDIO_AAC;
327 case AV_CODEC_ID_AAC_LATM:
328 stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
330 case AV_CODEC_ID_AC3:
331 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
332 ? STREAM_TYPE_PRIVATE_DATA
333 : STREAM_TYPE_AUDIO_AC3;
335 case AV_CODEC_ID_EAC3:
336 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
337 ? STREAM_TYPE_PRIVATE_DATA
338 : STREAM_TYPE_AUDIO_EAC3;
340 case AV_CODEC_ID_DTS:
341 stream_type = STREAM_TYPE_AUDIO_DTS;
343 case AV_CODEC_ID_TRUEHD:
344 stream_type = STREAM_TYPE_AUDIO_TRUEHD;
346 case AV_CODEC_ID_OPUS:
347 stream_type = STREAM_TYPE_PRIVATE_DATA;
349 case AV_CODEC_ID_TIMED_ID3:
350 stream_type = STREAM_TYPE_METADATA;
352 case AV_CODEC_ID_DVB_SUBTITLE:
353 case AV_CODEC_ID_DVB_TELETEXT:
354 stream_type = STREAM_TYPE_PRIVATE_DATA;
357 av_log(s, AV_LOG_WARNING, "Stream %d, codec %s, is muxed as a private data stream "
358 "and may not be recognized upon reading.\n", st->index, avcodec_get_name(st->codecpar->codec_id));
359 stream_type = STREAM_TYPE_PRIVATE_DATA;
366 static int get_m2ts_stream_type(AVFormatContext *s, AVStream *st)
370 switch (st->codecpar->codec_id) {
371 case AV_CODEC_ID_MPEG2VIDEO:
372 stream_type = STREAM_TYPE_VIDEO_MPEG2;
374 case AV_CODEC_ID_H264:
375 stream_type = STREAM_TYPE_VIDEO_H264;
377 case AV_CODEC_ID_VC1:
378 stream_type = STREAM_TYPE_VIDEO_VC1;
380 case AV_CODEC_ID_HEVC:
381 stream_type = STREAM_TYPE_VIDEO_HEVC;
383 case AV_CODEC_ID_PCM_BLURAY:
386 case AV_CODEC_ID_AC3:
389 case AV_CODEC_ID_DTS:
390 stream_type = (st->codecpar->channels > 6) ? 0x85 : 0x82;
392 case AV_CODEC_ID_TRUEHD:
395 case AV_CODEC_ID_EAC3:
398 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
401 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
405 av_log(s, AV_LOG_WARNING, "Stream %d, codec %s, is muxed as a private data stream "
406 "and may not be recognized upon reading.\n", st->index, avcodec_get_name(st->codecpar->codec_id));
407 stream_type = STREAM_TYPE_PRIVATE_DATA;
414 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
416 MpegTSWrite *ts = s->priv_data;
417 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
418 int val, stream_type, i, err = 0;
421 put16(&q, 0xe000 | service->pcr_pid);
423 program_info_length_ptr = q;
424 q += 2; /* patched after */
426 /* put program info here */
428 put_registration_descriptor(&q, MKTAG('H', 'D', 'M', 'V'));
429 *q++ = 0x88; // descriptor_tag - hdmv_copy_control_descriptor
430 *q++ = 0x04; // descriptor_length
431 put16(&q, 0x0fff); // CA_System_ID
432 *q++ = 0xfc; // private_data_byte
433 *q++ = 0xfc; // private_data_byte
436 val = 0xf000 | (q - program_info_length_ptr - 2);
437 program_info_length_ptr[0] = val >> 8;
438 program_info_length_ptr[1] = val;
440 for (i = 0; i < s->nb_streams; i++) {
441 AVStream *st = s->streams[i];
442 MpegTSWriteStream *ts_st = st->priv_data;
443 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
445 if (s->nb_programs) {
447 AVProgram *program = service->program;
449 for (k = 0; k < program->nb_stream_indexes; k++)
450 if (program->stream_index[k] == i) {
459 if (q - data > SECTION_LENGTH - 32) {
464 stream_type = ts->m2ts_mode ? get_m2ts_stream_type(s, st) : get_dvb_stream_type(s, st);
467 put16(&q, 0xe000 | ts_st->pid);
469 q += 2; /* patched after */
471 /* write optional descriptors here */
472 switch (st->codecpar->codec_type) {
473 case AVMEDIA_TYPE_AUDIO:
474 if (st->codecpar->codec_id==AV_CODEC_ID_AC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
475 *q++=0x6a; // AC3 descriptor see A038 DVB SI
476 *q++=1; // 1 byte, all flags sets to 0
477 *q++=0; // omit all fields...
479 if (st->codecpar->codec_id==AV_CODEC_ID_EAC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
480 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
481 *q++=1; // 1 byte, all flags sets to 0
482 *q++=0; // omit all fields...
484 if (st->codecpar->codec_id==AV_CODEC_ID_S302M)
485 put_registration_descriptor(&q, MKTAG('B', 'S', 'S', 'D'));
486 if (st->codecpar->codec_id==AV_CODEC_ID_OPUS) {
487 /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
488 if (q - data > SECTION_LENGTH - 6 - 4) {
493 put_registration_descriptor(&q, MKTAG('O', 'p', 'u', 's'));
495 *q++ = 0x7f; /* DVB extension descriptor */
499 if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
500 if (st->codecpar->extradata[18] == 0 && st->codecpar->channels <= 2) {
501 /* RTP mapping family */
502 *q++ = st->codecpar->channels;
503 } else if (st->codecpar->extradata[18] == 1 && st->codecpar->channels <= 8 &&
504 st->codecpar->extradata_size >= 21 + st->codecpar->channels) {
505 static const uint8_t coupled_stream_counts[9] = {
506 1, 0, 1, 1, 2, 2, 2, 3, 3
508 static const uint8_t channel_map_a[8][8] = {
515 {0, 4, 1, 2, 3, 5, 6},
516 {0, 6, 1, 2, 3, 4, 5, 7},
518 static const uint8_t channel_map_b[8][8] = {
525 {0, 1, 2, 3, 4, 5, 6},
526 {0, 1, 2, 3, 4, 5, 6, 7},
528 /* Vorbis mapping family */
530 if (st->codecpar->extradata[19] == st->codecpar->channels - coupled_stream_counts[st->codecpar->channels] &&
531 st->codecpar->extradata[20] == coupled_stream_counts[st->codecpar->channels] &&
532 memcmp(&st->codecpar->extradata[21], channel_map_a[st->codecpar->channels-1], st->codecpar->channels) == 0) {
533 *q++ = st->codecpar->channels;
534 } else if (st->codecpar->channels >= 2 && st->codecpar->extradata[19] == st->codecpar->channels &&
535 st->codecpar->extradata[20] == 0 &&
536 memcmp(&st->codecpar->extradata[21], channel_map_b[st->codecpar->channels-1], st->codecpar->channels) == 0) {
537 *q++ = st->codecpar->channels | 0x80;
539 /* Unsupported, could write an extended descriptor here */
540 av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
545 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]);
548 } else if (st->codecpar->channels <= 2) {
549 /* Assume RTP mapping family */
550 *q++ = st->codecpar->channels;
553 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
560 char *next = lang->value;
563 *q++ = 0x0a; /* ISO 639 language descriptor */
567 for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
568 if (q - data > SECTION_LENGTH - 4) {
572 next = strchr(p, ',');
573 if (strlen(p) != 3 && (!next || next != p + 3))
574 continue; /* not a 3-letter code */
580 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
582 else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
584 else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
587 *q++ = 0; /* undefined type */
593 q -= 2; /* no language codes were written */
596 case AVMEDIA_TYPE_SUBTITLE:
598 const char default_language[] = "und";
599 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
601 if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
603 int extradata_copied = 0;
605 *q++ = 0x59; /* subtitling_descriptor */
608 while (strlen(language) >= 3) {
609 if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
617 if (*language != '\0')
620 if (st->codecpar->extradata_size - extradata_copied >= 5) {
621 *q++ = st->codecpar->extradata[extradata_copied + 4]; /* subtitling_type */
622 memcpy(q, st->codecpar->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
623 extradata_copied += 5;
627 * 0x10 - normal with no monitor aspect ratio criticality
628 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
629 *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
630 if ((st->codecpar->extradata_size == 4) && (extradata_copied == 0)) {
631 /* support of old 4-byte extradata format */
632 memcpy(q, st->codecpar->extradata, 4); /* composition_page_id and ancillary_page_id */
633 extradata_copied += 4;
636 put16(&q, 1); /* composition_page_id */
637 put16(&q, 1); /* ancillary_page_id */
642 *len_ptr = q - len_ptr - 1;
643 } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
644 uint8_t *len_ptr = NULL;
645 int extradata_copied = 0;
647 /* The descriptor tag. teletext_descriptor */
651 while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
656 if (*language != '\0')
659 if (st->codecpar->extradata_size - 1 > extradata_copied) {
660 memcpy(q, st->codecpar->extradata + extradata_copied, 2);
661 extradata_copied += 2;
664 /* The Teletext descriptor:
665 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
666 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
667 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
673 *len_ptr = q - len_ptr - 1;
677 case AVMEDIA_TYPE_VIDEO:
678 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
679 put_registration_descriptor(&q, MKTAG('d', 'r', 'a', 'c'));
680 } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
681 put_registration_descriptor(&q, MKTAG('V', 'C', '-', '1'));
682 } else if (stream_type == STREAM_TYPE_VIDEO_HEVC && s->strict_std_compliance <= FF_COMPLIANCE_NORMAL) {
683 put_registration_descriptor(&q, MKTAG('H', 'E', 'V', 'C'));
686 case AVMEDIA_TYPE_DATA:
687 if (st->codecpar->codec_id == AV_CODEC_ID_SMPTE_KLV) {
688 put_registration_descriptor(&q, MKTAG('K', 'L', 'V', 'A'));
689 } else if (st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
690 const char *tag = "ID3 ";
691 *q++ = 0x26; /* metadata descriptor */
693 put16(&q, 0xffff); /* metadata application format */
694 putbuf(&q, tag, strlen(tag));
695 *q++ = 0xff; /* metadata format */
696 putbuf(&q, tag, strlen(tag));
697 *q++ = 0; /* metadata service ID */
698 *q++ = 0xF; /* metadata_locator_record_flag|MPEG_carriage_flags|reserved */
703 val = 0xf000 | (q - desc_length_ptr - 2);
704 desc_length_ptr[0] = val >> 8;
705 desc_length_ptr[1] = val;
709 av_log(s, AV_LOG_ERROR,
710 "The PMT section cannot fit stream %d and all following streams.\n"
711 "Try reducing the number of languages in the audio streams "
712 "or the total number of streams.\n", i);
714 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
719 static void mpegts_write_sdt(AVFormatContext *s)
721 MpegTSWrite *ts = s->priv_data;
722 MpegTSService *service;
723 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
724 int i, running_status, free_ca_mode, val;
729 for (i = 0; i < ts->nb_services; i++) {
730 service = ts->services[i];
731 put16(&q, service->sid);
732 *q++ = 0xfc | 0x00; /* currently no EIT info */
733 desc_list_len_ptr = q;
735 running_status = 4; /* running */
738 /* write only one descriptor for the service name and provider */
742 *q++ = ts->service_type;
743 putbuf(&q, service->provider_name, service->provider_name[0] + 1);
744 putbuf(&q, service->name, service->name[0] + 1);
745 desc_len_ptr[0] = q - desc_len_ptr - 1;
747 /* fill descriptor length */
748 val = (running_status << 13) | (free_ca_mode << 12) |
749 (q - desc_list_len_ptr - 2);
750 desc_list_len_ptr[0] = val >> 8;
751 desc_list_len_ptr[1] = val;
753 mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, ts->tables_version, 0, 0,
757 /* This stores a string in buf with the correct encoding and also sets the
758 * first byte as the length. !str is accepted for an empty string.
759 * If the string is already encoded, invalid UTF-8 or has no multibyte sequence
760 * then we keep it as is, otherwise we signal UTF-8 encoding. */
761 static int encode_str8(uint8_t *buf, const char *str)
766 str_len = strlen(str);
767 if (str[0] && (unsigned)str[0] >= 0x20) { /* Make sure the string is not already encoded. */
768 const uint8_t *q = str;
769 int has_multibyte = 0;
772 GET_UTF8(code, *q++, goto invalid;) /* Is it valid UTF-8? */
773 has_multibyte |= (code > 127); /* Does it have multibyte UTF-8 chars in it? */
775 if (has_multibyte) { /* If we have multibyte chars and valid UTF-8, then encode as such! */
777 return AVERROR(EINVAL);
778 buf[0] = str_len + 1;
780 memcpy(&buf[2], str, str_len);
785 /* Otherwise let's just encode the string as is! */
787 return AVERROR(EINVAL);
789 memcpy(&buf[1], str, str_len);
793 static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
795 return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
799 static void write_packet(AVFormatContext *s, const uint8_t *packet)
801 MpegTSWrite *ts = s->priv_data;
803 int64_t pcr = get_pcr(s->priv_data, s->pb);
804 uint32_t tp_extra_header = pcr % 0x3fffffff;
805 tp_extra_header = AV_RB32(&tp_extra_header);
806 avio_write(s->pb, (unsigned char *) &tp_extra_header,
807 sizeof(tp_extra_header));
809 avio_write(s->pb, packet, TS_PACKET_SIZE);
812 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
814 AVFormatContext *ctx = s->opaque;
815 write_packet(ctx, packet);
818 static MpegTSService *mpegts_add_service(AVFormatContext *s, int sid,
819 const AVDictionary *metadata,
822 MpegTSWrite *ts = s->priv_data;
823 MpegTSService *service;
824 AVDictionaryEntry *title, *provider;
825 char default_service_name[32];
826 const char *service_name;
827 const char *provider_name;
829 title = av_dict_get(metadata, "service_name", NULL, 0);
831 title = av_dict_get(metadata, "title", NULL, 0);
832 snprintf(default_service_name, sizeof(default_service_name), "%s%02d", DEFAULT_SERVICE_NAME, ts->nb_services + 1);
833 service_name = title ? title->value : default_service_name;
834 provider = av_dict_get(metadata, "service_provider", NULL, 0);
835 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
837 service = av_mallocz(sizeof(MpegTSService));
840 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
842 service->pcr_pid = 0x1fff;
843 if (encode_str8(service->provider_name, provider_name) < 0 ||
844 encode_str8(service->name, service_name) < 0) {
845 av_log(s, AV_LOG_ERROR, "Too long service or provider name\n");
848 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
851 service->pmt.write_packet = section_write_packet;
852 service->pmt.opaque = s;
853 service->pmt.cc = 15;
854 service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
855 service->program = program;
863 static void enable_pcr_generation_for_stream(AVFormatContext *s, AVStream *pcr_st)
865 MpegTSWrite *ts = s->priv_data;
866 MpegTSWriteStream *ts_st = pcr_st->priv_data;
868 if (ts->mux_rate > 1 || ts->pcr_period_ms >= 0) {
869 int pcr_period_ms = ts->pcr_period_ms == -1 ? PCR_RETRANS_TIME : ts->pcr_period_ms;
870 ts_st->pcr_period = av_rescale(pcr_period_ms, PCR_TIME_BASE, 1000);
872 /* By default, for VBR we select the highest multiple of frame duration which is less than 100 ms. */
873 int64_t frame_period = 0;
874 if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
875 int frame_size = av_get_audio_frame_duration2(pcr_st->codecpar, 0);
877 av_log(s, AV_LOG_WARNING, "frame size not set\n");
880 frame_period = av_rescale_rnd(frame_size, PCR_TIME_BASE, pcr_st->codecpar->sample_rate, AV_ROUND_UP);
881 } else if (pcr_st->avg_frame_rate.num) {
882 frame_period = av_rescale_rnd(pcr_st->avg_frame_rate.den, PCR_TIME_BASE, pcr_st->avg_frame_rate.num, AV_ROUND_UP);
884 if (frame_period > 0 && frame_period <= PCR_TIME_BASE / 10)
885 ts_st->pcr_period = frame_period * (PCR_TIME_BASE / 10 / frame_period);
887 ts_st->pcr_period = 1;
890 // output a PCR as soon as possible
891 ts_st->last_pcr = ts->first_pcr - ts_st->pcr_period;
894 static void select_pcr_streams(AVFormatContext *s)
896 MpegTSWrite *ts = s->priv_data;
898 for (int i = 0; i < ts->nb_services; i++) {
899 MpegTSService *service = ts->services[i];
900 AVStream *pcr_st = NULL;
901 AVProgram *program = service->program;
902 int nb_streams = program ? program->nb_stream_indexes : s->nb_streams;
904 for (int j = 0; j < nb_streams; j++) {
905 AVStream *st = s->streams[program ? program->stream_index[j] : j];
907 pcr_st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
914 MpegTSWriteStream *ts_st = pcr_st->priv_data;
915 service->pcr_pid = ts_st->pid;
916 enable_pcr_generation_for_stream(s, pcr_st);
917 av_log(s, AV_LOG_VERBOSE, "service %i using PCR in pid=%i, pcr_period=%"PRId64"ms\n",
918 service->sid, service->pcr_pid, av_rescale(ts_st->pcr_period, 1000, PCR_TIME_BASE));
923 static int mpegts_init(AVFormatContext *s)
925 MpegTSWrite *ts = s->priv_data;
930 if (ts->m2ts_mode == -1) {
931 if (av_match_ext(s->url, "m2ts")) {
938 ts->m2ts_video_pid = M2TS_VIDEO_PID;
939 ts->m2ts_audio_pid = M2TS_AUDIO_START_PID;
940 ts->m2ts_pgssub_pid = M2TS_PGSSUB_START_PID;
941 ts->m2ts_textsub_pid = M2TS_TEXTSUB_PID;
944 ts->pmt_start_pid = M2TS_PMT_PID;
945 if (s->nb_programs > 1) {
946 av_log(s, AV_LOG_ERROR, "Only one program is allowed in m2ts mode!\n");
947 return AVERROR(EINVAL);
951 if (s->max_delay < 0) /* Not set by the caller */
954 // round up to a whole number of TS packets
955 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
957 ts->tsid = ts->transport_stream_id;
958 ts->onid = ts->original_network_id;
959 if (!s->nb_programs) {
960 /* allocate a single DVB service */
961 if (!mpegts_add_service(s, ts->service_id, s->metadata, NULL))
962 return AVERROR(ENOMEM);
964 for (i = 0; i < s->nb_programs; i++) {
965 AVProgram *program = s->programs[i];
966 if (!mpegts_add_service(s, program->id, program->metadata, program))
967 return AVERROR(ENOMEM);
971 ts->pat.pid = PAT_PID;
972 /* Initialize at 15 so that it wraps and is equal to 0 for the
973 * first packet we write. */
975 ts->pat.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
976 ts->pat.write_packet = section_write_packet;
979 ts->sdt.pid = SDT_PID;
981 ts->sdt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
982 ts->sdt.write_packet = section_write_packet;
985 pids = av_malloc_array(s->nb_streams, sizeof(*pids));
987 ret = AVERROR(ENOMEM);
991 /* assign pids to each stream */
992 for (i = 0; i < s->nb_streams; i++) {
993 AVStream *st = s->streams[i];
994 MpegTSWriteStream *ts_st;
996 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
998 ret = AVERROR(ENOMEM);
1001 st->priv_data = ts_st;
1003 avpriv_set_pts_info(st, 33, 1, 90000);
1005 ts_st->payload = av_mallocz(ts->pes_payload_size);
1006 if (!ts_st->payload) {
1007 ret = AVERROR(ENOMEM);
1011 /* MPEG pid values < 16 are reserved. Applications which set st->id in
1012 * this range are assigned a calculated pid. */
1014 if (ts->m2ts_mode) {
1015 switch (st->codecpar->codec_type) {
1016 case AVMEDIA_TYPE_VIDEO:
1017 ts_st->pid = ts->m2ts_video_pid++;
1019 case AVMEDIA_TYPE_AUDIO:
1020 ts_st->pid = ts->m2ts_audio_pid++;
1022 case AVMEDIA_TYPE_SUBTITLE:
1023 switch (st->codecpar->codec_id) {
1024 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
1025 ts_st->pid = ts->m2ts_pgssub_pid++;
1027 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
1028 ts_st->pid = ts->m2ts_textsub_pid++;
1033 if (ts->m2ts_video_pid > M2TS_VIDEO_PID + 1 ||
1034 ts->m2ts_audio_pid > M2TS_AUDIO_START_PID + 32 ||
1035 ts->m2ts_pgssub_pid > M2TS_PGSSUB_START_PID + 32 ||
1036 ts->m2ts_textsub_pid > M2TS_TEXTSUB_PID + 1 ||
1038 av_log(s, AV_LOG_ERROR, "Cannot automatically assign PID for stream %d\n", st->index);
1039 ret = AVERROR(EINVAL);
1043 ts_st->pid = ts->start_pid + i;
1046 ts_st->pid = st->id;
1048 if (ts_st->pid >= 0x1FFF) {
1049 av_log(s, AV_LOG_ERROR,
1050 "Invalid stream id %d, must be less than 8191\n", st->id);
1051 ret = AVERROR(EINVAL);
1054 for (j = 0; j < ts->nb_services; j++) {
1055 if (ts->services[j]->pmt.pid > LAST_OTHER_PID) {
1056 av_log(s, AV_LOG_ERROR,
1057 "Invalid PMT PID %d, must be less than %d\n", ts->services[j]->pmt.pid, LAST_OTHER_PID + 1);
1058 ret = AVERROR(EINVAL);
1061 if (ts_st->pid == ts->services[j]->pmt.pid) {
1062 av_log(s, AV_LOG_ERROR, "PID %d cannot be both elementary and PMT PID\n", ts_st->pid);
1063 ret = AVERROR(EINVAL);
1067 for (j = 0; j < i; j++) {
1068 if (pids[j] == ts_st->pid) {
1069 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
1070 ret = AVERROR(EINVAL);
1074 pids[i] = ts_st->pid;
1075 ts_st->payload_pts = AV_NOPTS_VALUE;
1076 ts_st->payload_dts = AV_NOPTS_VALUE;
1077 ts_st->first_pts_check = 1;
1079 ts_st->discontinuity = ts->flags & MPEGTS_FLAG_DISCONT;
1080 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1081 st->codecpar->extradata_size > 0) {
1083 ts_st->amux = avformat_alloc_context();
1085 ret = AVERROR(ENOMEM);
1088 ts_st->amux->oformat =
1089 av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
1091 if (!ts_st->amux->oformat) {
1092 ret = AVERROR(EINVAL);
1095 if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
1096 ret = AVERROR(ENOMEM);
1099 ret = avcodec_parameters_copy(ast->codecpar, st->codecpar);
1102 ast->time_base = st->time_base;
1103 ret = avformat_write_header(ts_st->amux, NULL);
1107 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1108 ts_st->opus_pending_trim_start = st->codecpar->initial_padding * 48000 / st->codecpar->sample_rate;
1115 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
1117 select_pcr_streams(s);
1119 ts->last_pat_ts = AV_NOPTS_VALUE;
1120 ts->last_sdt_ts = AV_NOPTS_VALUE;
1121 ts->pat_period = av_rescale(ts->pat_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1122 ts->sdt_period = av_rescale(ts->sdt_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1124 if (ts->mux_rate == 1)
1125 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
1127 av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
1128 av_log(s, AV_LOG_VERBOSE,
1129 "sdt every %"PRId64" ms, pat/pmt every %"PRId64" ms\n",
1130 av_rescale(ts->sdt_period, 1000, PCR_TIME_BASE),
1131 av_rescale(ts->pat_period, 1000, PCR_TIME_BASE));
1140 /* send SDT, PAT and PMT tables regularly */
1141 static void retransmit_si_info(AVFormatContext *s, int force_pat, int force_sdt, int64_t pcr)
1143 MpegTSWrite *ts = s->priv_data;
1146 if ((pcr != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
1147 (pcr != AV_NOPTS_VALUE && pcr - ts->last_sdt_ts >= ts->sdt_period) ||
1150 if (pcr != AV_NOPTS_VALUE)
1151 ts->last_sdt_ts = FFMAX(pcr, ts->last_sdt_ts);
1152 mpegts_write_sdt(s);
1154 if ((pcr != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
1155 (pcr != AV_NOPTS_VALUE && pcr - ts->last_pat_ts >= ts->pat_period) ||
1157 if (pcr != AV_NOPTS_VALUE)
1158 ts->last_pat_ts = FFMAX(pcr, ts->last_pat_ts);
1159 mpegts_write_pat(s);
1160 for (i = 0; i < ts->nb_services; i++)
1161 mpegts_write_pmt(s, ts->services[i]);
1165 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1167 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
1169 *buf++ = pcr_high >> 25;
1170 *buf++ = pcr_high >> 17;
1171 *buf++ = pcr_high >> 9;
1172 *buf++ = pcr_high >> 1;
1173 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1179 /* Write a single null transport stream packet */
1180 static void mpegts_insert_null_packet(AVFormatContext *s)
1183 uint8_t buf[TS_PACKET_SIZE];
1190 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
1191 write_packet(s, buf);
1194 /* Write a single transport stream packet with a PCR and no payload */
1195 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
1197 MpegTSWrite *ts = s->priv_data;
1198 MpegTSWriteStream *ts_st = st->priv_data;
1200 uint8_t buf[TS_PACKET_SIZE];
1204 *q++ = ts_st->pid >> 8;
1206 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1207 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1208 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1209 *q++ = 0x10; /* Adaptation flags: PCR present */
1210 if (ts_st->discontinuity) {
1212 ts_st->discontinuity = 0;
1215 /* PCR coded into 6 bytes */
1216 q += write_pcr_bits(q, get_pcr(ts, s->pb));
1218 /* stuffing bytes */
1219 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
1220 write_packet(s, buf);
1223 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1227 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1229 val = (((pts >> 15) & 0x7fff) << 1) | 1;
1232 val = (((pts) & 0x7fff) << 1) | 1;
1237 /* Set an adaptation field flag in an MPEG-TS packet*/
1238 static void set_af_flag(uint8_t *pkt, int flag)
1240 // expect at least one flag to set
1243 if ((pkt[3] & 0x20) == 0) {
1244 // no AF yet, set adaptation field flag
1246 // 1 byte length, no flags
1253 /* Extend the adaptation field by size bytes */
1254 static void extend_af(uint8_t *pkt, int size)
1256 // expect already existing adaptation field
1257 av_assert0(pkt[3] & 0x20);
1261 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1262 static uint8_t *get_ts_payload_start(uint8_t *pkt)
1265 return pkt + 5 + pkt[4];
1270 /* Add a PES header to the front of the payload, and segment into an integer
1271 * number of TS packets. The final TS packet is padded using an oversized
1272 * adaptation header to exactly fill the last TS packet.
1273 * NOTE: 'payload' contains a complete PES payload. */
1274 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
1275 const uint8_t *payload, int payload_size,
1276 int64_t pts, int64_t dts, int key, int stream_id)
1278 MpegTSWriteStream *ts_st = st->priv_data;
1279 MpegTSWrite *ts = s->priv_data;
1280 uint8_t buf[TS_PACKET_SIZE];
1282 int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
1283 int afc_len, stuffing_len;
1284 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1285 int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1288 av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
1289 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1293 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1296 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1300 while (payload_size > 0) {
1301 int64_t pcr = AV_NOPTS_VALUE;
1302 if (ts->mux_rate > 1)
1303 pcr = get_pcr(ts, s->pb);
1304 else if (dts != AV_NOPTS_VALUE)
1305 pcr = (dts - delay) * 300;
1307 retransmit_si_info(s, force_pat, force_sdt, pcr);
1312 if (ts->mux_rate > 1) {
1313 /* Send PCR packets for all PCR streams if needed */
1314 pcr = get_pcr(ts, s->pb);
1315 if (pcr >= ts->next_pcr) {
1316 int64_t next_pcr = INT64_MAX;
1317 for (int i = 0; i < s->nb_streams; i++) {
1318 /* Make the current stream the last, because for that we
1319 * can insert the pcr into the payload later */
1320 int st2_index = i < st->index ? i : (i + 1 == s->nb_streams ? st->index : i + 1);
1321 AVStream *st2 = s->streams[st2_index];
1322 MpegTSWriteStream *ts_st2 = st2->priv_data;
1323 if (ts_st2->pcr_period) {
1324 if (pcr - ts_st2->last_pcr >= ts_st2->pcr_period) {
1325 ts_st2->last_pcr = FFMAX(pcr - ts_st2->pcr_period, ts_st2->last_pcr + ts_st2->pcr_period);
1327 mpegts_insert_pcr_only(s, st2);
1328 pcr = get_pcr(ts, s->pb);
1333 next_pcr = FFMIN(next_pcr, ts_st2->last_pcr + ts_st2->pcr_period);
1336 ts->next_pcr = next_pcr;
1338 if (dts != AV_NOPTS_VALUE && (dts - pcr / 300) > delay) {
1339 /* pcr insert gets priority over null packet insert */
1341 mpegts_insert_pcr_only(s, st);
1343 mpegts_insert_null_packet(s);
1344 /* recalculate write_pcr and possibly retransmit si_info */
1347 } else if (ts_st->pcr_period && pcr != AV_NOPTS_VALUE) {
1348 if (pcr - ts_st->last_pcr >= ts_st->pcr_period && is_start) {
1349 ts_st->last_pcr = FFMAX(pcr - ts_st->pcr_period, ts_st->last_pcr + ts_st->pcr_period);
1354 /* prepare packet header */
1357 val = ts_st->pid >> 8;
1358 if (ts->m2ts_mode && st->codecpar->codec_id == AV_CODEC_ID_AC3)
1364 ts_st->cc = ts_st->cc + 1 & 0xf;
1365 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1366 if (ts_st->discontinuity) {
1367 set_af_flag(buf, 0x80);
1368 q = get_ts_payload_start(buf);
1369 ts_st->discontinuity = 0;
1371 if (key && is_start && pts != AV_NOPTS_VALUE) {
1372 // set Random Access for key frames
1373 if (ts_st->pcr_period)
1375 set_af_flag(buf, 0x40);
1376 q = get_ts_payload_start(buf);
1379 set_af_flag(buf, 0x10);
1380 q = get_ts_payload_start(buf);
1381 // add 11, pcr references the last byte of program clock reference base
1382 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1383 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1384 extend_af(buf, write_pcr_bits(q, pcr));
1385 q = get_ts_payload_start(buf);
1388 int pes_extension = 0;
1389 int pes_header_stuffing_bytes = 0;
1390 /* write PES header */
1394 is_dvb_subtitle = 0;
1395 is_dvb_teletext = 0;
1396 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1397 if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC)
1401 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1402 (st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
1403 st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
1404 st->codecpar->codec_id == AV_CODEC_ID_AAC)) {
1406 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1407 st->codecpar->codec_id == AV_CODEC_ID_AC3 &&
1410 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
1411 st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
1413 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1414 *q++ = stream_id != -1 ? stream_id : 0xfc;
1416 if (stream_id == 0xbd) /* asynchronous KLV */
1417 pts = dts = AV_NOPTS_VALUE;
1420 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1421 if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1422 is_dvb_subtitle = 1;
1423 } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1424 is_dvb_teletext = 1;
1430 if (pts != AV_NOPTS_VALUE) {
1434 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1438 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1439 st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1440 /* set PES_extension_flag */
1444 /* One byte for PES2 extension flag +
1445 * one byte for extension length +
1446 * one byte for extension id */
1449 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1450 * otherwise it will not play sound on blu-ray
1452 if (ts->m2ts_mode &&
1453 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1454 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1455 /* set PES_extension_flag */
1460 if (is_dvb_teletext) {
1461 pes_header_stuffing_bytes = 0x24 - header_len;
1464 len = payload_size + header_len + 3;
1465 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1466 if (is_dvb_subtitle) {
1472 if (ts->omit_video_pes_length && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1478 /* data alignment indicator is required for subtitle and data streams */
1479 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
1484 if (pts != AV_NOPTS_VALUE) {
1485 write_pts(q, flags >> 6, pts);
1488 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1489 write_pts(q, 1, dts);
1492 if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1493 flags = 0x01; /* set PES_extension_flag_2 */
1495 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1496 /* Set the stream ID extension flag bit to 0 and
1497 * write the extended stream ID. */
1500 /* For Blu-ray AC3 Audio Setting extended flags */
1501 if (ts->m2ts_mode &&
1503 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1504 flags = 0x01; /* set PES_extension_flag_2 */
1506 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1507 *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1511 if (is_dvb_subtitle) {
1512 /* First two fields of DVB subtitles PES data:
1513 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1514 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1518 if (is_dvb_teletext) {
1519 memset(q, 0xff, pes_header_stuffing_bytes);
1520 q += pes_header_stuffing_bytes;
1525 header_len = q - buf;
1527 len = TS_PACKET_SIZE - header_len;
1528 if (len > payload_size)
1530 stuffing_len = TS_PACKET_SIZE - header_len - len;
1531 if (stuffing_len > 0) {
1532 /* add stuffing with AFC */
1533 if (buf[3] & 0x20) {
1534 /* stuffing already present: increase its size */
1535 afc_len = buf[4] + 1;
1536 memmove(buf + 4 + afc_len + stuffing_len,
1538 header_len - (4 + afc_len));
1539 buf[4] += stuffing_len;
1540 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1543 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1545 buf[4] = stuffing_len - 1;
1546 if (stuffing_len >= 2) {
1548 memset(buf + 6, 0xff, stuffing_len - 2);
1553 if (is_dvb_subtitle && payload_size == len) {
1554 memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1555 buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1557 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1561 payload_size -= len;
1562 write_packet(s, buf);
1564 ts_st->prev_payload_key = key;
1567 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1569 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1570 if (!st->nb_frames) {
1571 av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
1572 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1573 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1574 return AVERROR_INVALIDDATA;
1576 av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1578 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1579 av_log(s, AV_LOG_WARNING, "\n");
1584 static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1586 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1587 if (!st->nb_frames) {
1588 av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1589 return AVERROR_PATCHWELCOME;
1591 av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1593 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1594 av_log(s, AV_LOG_WARNING, "\n");
1599 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1600 * Released under the LGPL v2.1+, written by
1601 * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1603 static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
1605 static const int durations[32] = {
1606 480, 960, 1920, 2880, /* Silk NB */
1607 480, 960, 1920, 2880, /* Silk MB */
1608 480, 960, 1920, 2880, /* Silk WB */
1609 480, 960, /* Hybrid SWB */
1610 480, 960, /* Hybrid FB */
1611 120, 240, 480, 960, /* CELT NB */
1612 120, 240, 480, 960, /* CELT NB */
1613 120, 240, 480, 960, /* CELT NB */
1614 120, 240, 480, 960, /* CELT NB */
1616 int toc, frame_duration, nframes, duration;
1623 frame_duration = durations[toc >> 3];
1637 nframes = pkt->data[1] & 63;
1641 duration = nframes * frame_duration;
1642 if (duration > 5760) {
1643 av_log(s, AV_LOG_WARNING,
1644 "Opus packet duration > 120 ms, invalid");
1651 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1653 AVStream *st = s->streams[pkt->stream_index];
1654 int size = pkt->size;
1655 uint8_t *buf = pkt->data;
1656 uint8_t *data = NULL;
1657 MpegTSWrite *ts = s->priv_data;
1658 MpegTSWriteStream *ts_st = st->priv_data;
1659 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1660 const int64_t max_audio_delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) / 2;
1661 int64_t dts = pkt->dts, pts = pkt->pts;
1662 int opus_samples = 0;
1664 uint8_t *side_data = NULL;
1667 side_data = av_packet_get_side_data(pkt,
1668 AV_PKT_DATA_MPEGTS_STREAM_ID,
1671 stream_id = side_data[0];
1673 if (ts->copyts < 1) {
1674 if (pts != AV_NOPTS_VALUE)
1676 if (dts != AV_NOPTS_VALUE)
1680 if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) {
1681 av_log(s, AV_LOG_ERROR, "first pts value must be set\n");
1682 return AVERROR_INVALIDDATA;
1684 ts_st->first_pts_check = 0;
1686 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1687 const uint8_t *p = buf, *buf_end = p + size;
1688 uint32_t state = -1;
1689 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1690 int ret = ff_check_h264_startcode(s, st, pkt);
1694 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1698 p = avpriv_find_start_code(p, buf_end, &state);
1699 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", state & 0x1f);
1700 if ((state & 0x1f) == 7)
1702 } while (p < buf_end && (state & 0x1f) != 9 &&
1703 (state & 0x1f) != 5 && (state & 0x1f) != 1);
1705 if ((state & 0x1f) != 5)
1707 if ((state & 0x1f) != 9) { // AUD NAL
1708 data = av_malloc(pkt->size + 6 + extradd);
1710 return AVERROR(ENOMEM);
1711 memcpy(data + 6, st->codecpar->extradata, extradd);
1712 memcpy(data + 6 + extradd, pkt->data, pkt->size);
1713 AV_WB32(data, 0x00000001);
1715 data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1717 size = pkt->size + 6 + extradd;
1719 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
1720 if (pkt->size < 2) {
1721 av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1722 return AVERROR_INVALIDDATA;
1724 if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1729 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1730 "and extradata missing\n");
1732 av_init_packet(&pkt2);
1733 pkt2.data = pkt->data;
1734 pkt2.size = pkt->size;
1735 av_assert0(pkt->dts != AV_NOPTS_VALUE);
1736 pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1738 ret = avio_open_dyn_buf(&ts_st->amux->pb);
1742 ret = av_write_frame(ts_st->amux, &pkt2);
1744 ffio_free_dyn_buf(&ts_st->amux->pb);
1747 size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1748 ts_st->amux->pb = NULL;
1752 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1753 const uint8_t *p = buf, *buf_end = p + size;
1754 uint32_t state = -1;
1755 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1756 int ret = check_hevc_startcode(s, st, pkt);
1760 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1764 p = avpriv_find_start_code(p, buf_end, &state);
1765 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", (state & 0x7e)>>1);
1766 if ((state & 0x7e) == 2*32)
1768 } while (p < buf_end && (state & 0x7e) != 2*35 &&
1769 (state & 0x7e) >= 2*32);
1771 if ((state & 0x7e) < 2*16 || (state & 0x7e) >= 2*24)
1773 if ((state & 0x7e) != 2*35) { // AUD NAL
1774 data = av_malloc(pkt->size + 7 + extradd);
1776 return AVERROR(ENOMEM);
1777 memcpy(data + 7, st->codecpar->extradata, extradd);
1778 memcpy(data + 7 + extradd, pkt->data, pkt->size);
1779 AV_WB32(data, 0x00000001);
1782 data[6] = 0x50; // any slice type (0x4) + rbsp stop one bit
1784 size = pkt->size + 7 + extradd;
1786 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1787 if (pkt->size < 2) {
1788 av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
1789 return AVERROR_INVALIDDATA;
1792 /* Add Opus control header */
1793 if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
1797 int ctrl_header_size;
1798 int trim_start = 0, trim_end = 0;
1800 opus_samples = opus_get_packet_samples(s, pkt);
1802 side_data = av_packet_get_side_data(pkt,
1803 AV_PKT_DATA_SKIP_SAMPLES,
1806 if (side_data && side_data_size >= 10) {
1807 trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate;
1810 ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
1811 if (ts_st->opus_pending_trim_start)
1812 ctrl_header_size += 2;
1814 ctrl_header_size += 2;
1816 data = av_malloc(ctrl_header_size);
1818 return AVERROR(ENOMEM);
1822 if (ts_st->opus_pending_trim_start)
1830 data[i] = FFMIN(n, 255);
1835 av_assert0(2 + pkt->size / 255 + 1 == i);
1837 if (ts_st->opus_pending_trim_start) {
1838 trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
1839 AV_WB16(data + i, trim_start);
1841 ts_st->opus_pending_trim_start -= trim_start;
1844 trim_end = FFMIN(trim_end, opus_samples - trim_start);
1845 AV_WB16(data + i, trim_end);
1849 memcpy(data + i, pkt->data, pkt->size);
1851 size = ctrl_header_size;
1853 /* TODO: Can we get TS formatted data here? If so we will
1854 * need to count the samples of that too! */
1855 av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
1859 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1860 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1861 dts - ts_st->payload_dts >= max_audio_delay) ||
1862 ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
1863 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1864 ts_st->payload_pts, ts_st->payload_dts,
1865 ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id);
1866 ts_st->payload_size = 0;
1867 ts_st->opus_queued_samples = 0;
1870 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
1871 av_assert0(!ts_st->payload_size);
1872 // for video and subtitle, write a single pes packet
1873 mpegts_write_pes(s, st, buf, size, pts, dts,
1874 pkt->flags & AV_PKT_FLAG_KEY, stream_id);
1875 ts_st->opus_queued_samples = 0;
1880 if (!ts_st->payload_size) {
1881 ts_st->payload_pts = pts;
1882 ts_st->payload_dts = dts;
1883 ts_st->payload_flags = pkt->flags;
1886 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1887 ts_st->payload_size += size;
1888 ts_st->opus_queued_samples += opus_samples;
1895 static void mpegts_write_flush(AVFormatContext *s)
1897 MpegTSWrite *ts = s->priv_data;
1900 /* flush current packets */
1901 for (i = 0; i < s->nb_streams; i++) {
1902 AVStream *st = s->streams[i];
1903 MpegTSWriteStream *ts_st = st->priv_data;
1904 if (ts_st->payload_size > 0) {
1905 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1906 ts_st->payload_pts, ts_st->payload_dts,
1907 ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
1908 ts_st->payload_size = 0;
1909 ts_st->opus_queued_samples = 0;
1913 if (ts->m2ts_mode) {
1914 int packets = (avio_tell(s->pb) / (TS_PACKET_SIZE + 4)) % 32;
1915 while (packets++ < 32)
1916 mpegts_insert_null_packet(s);
1920 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
1923 mpegts_write_flush(s);
1926 return mpegts_write_packet_internal(s, pkt);
1930 static int mpegts_write_end(AVFormatContext *s)
1933 mpegts_write_flush(s);
1938 static void mpegts_deinit(AVFormatContext *s)
1940 MpegTSWrite *ts = s->priv_data;
1941 MpegTSService *service;
1944 for (i = 0; i < s->nb_streams; i++) {
1945 AVStream *st = s->streams[i];
1946 MpegTSWriteStream *ts_st = st->priv_data;
1948 av_freep(&ts_st->payload);
1950 avformat_free_context(ts_st->amux);
1956 for (i = 0; i < ts->nb_services; i++) {
1957 service = ts->services[i];
1960 av_freep(&ts->services);
1963 static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
1966 AVStream *st = s->streams[pkt->stream_index];
1968 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1969 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
1970 (AV_RB24(pkt->data) != 0x000001 ||
1971 (st->codecpar->extradata_size > 0 &&
1972 st->codecpar->extradata[0] == 1)))
1973 ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL);
1974 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1975 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
1976 (AV_RB24(pkt->data) != 0x000001 ||
1977 (st->codecpar->extradata_size > 0 &&
1978 st->codecpar->extradata[0] == 1)))
1979 ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL);
1985 static const AVOption options[] = {
1986 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
1987 offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT,
1988 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1989 { "mpegts_original_network_id", "Set original_network_id field.",
1990 offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT,
1991 { .i64 = DVB_PRIVATE_NETWORK_START }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1992 { "mpegts_service_id", "Set service_id field.",
1993 offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT,
1994 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1995 { "mpegts_service_type", "Set service_type field.",
1996 offsetof(MpegTSWrite, service_type), AV_OPT_TYPE_INT,
1997 { .i64 = 0x01 }, 0x01, 0xff, AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1998 { "digital_tv", "Digital Television.",
1999 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff,
2000 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
2001 { "digital_radio", "Digital Radio.",
2002 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff,
2003 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
2004 { "teletext", "Teletext.",
2005 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff,
2006 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
2007 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
2008 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff,
2009 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
2010 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
2011 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff,
2012 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
2013 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
2014 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff,
2015 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
2016 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
2017 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff,
2018 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
2019 { "hevc_digital_hdtv", "HEVC Digital Television Service.",
2020 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV }, 0x01, 0xff,
2021 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
2022 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
2023 offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT,
2024 { .i64 = 0x1000 }, FIRST_OTHER_PID, LAST_OTHER_PID, AV_OPT_FLAG_ENCODING_PARAM },
2025 { "mpegts_start_pid", "Set the first pid.",
2026 offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT,
2027 { .i64 = 0x0100 }, FIRST_OTHER_PID, LAST_OTHER_PID, AV_OPT_FLAG_ENCODING_PARAM },
2028 { "mpegts_m2ts_mode", "Enable m2ts mode.",
2029 offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_BOOL,
2030 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
2032 offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT,
2033 { .i64 = 1 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2034 { "pes_payload_size", "Minimum PES packet payload in bytes",
2035 offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT,
2036 { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2037 { "mpegts_flags", "MPEG-TS muxing flags",
2038 offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX,
2039 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2040 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
2041 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX,
2042 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2043 { "latm", "Use LATM packetization for AAC",
2044 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX,
2045 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2046 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
2047 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX,
2048 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2049 { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
2050 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX,
2051 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2052 { "initial_discontinuity", "Mark initial packets as discontinuous",
2053 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_DISCONT }, 0, INT_MAX,
2054 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2055 { "mpegts_copyts", "don't offset dts/pts",
2056 offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_BOOL,
2057 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
2058 { "tables_version", "set PAT, PMT and SDT version",
2059 offsetof(MpegTSWrite, tables_version), AV_OPT_TYPE_INT,
2060 { .i64 = 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM },
2061 { "omit_video_pes_length", "Omit the PES packet length for video packets",
2062 offsetof(MpegTSWrite, omit_video_pes_length), AV_OPT_TYPE_BOOL,
2063 { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
2064 { "pcr_period", "PCR retransmission time in milliseconds",
2065 offsetof(MpegTSWrite, pcr_period_ms), AV_OPT_TYPE_INT,
2066 { .i64 = -1 }, -1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2067 { "pat_period", "PAT/PMT retransmission time limit in seconds",
2068 offsetof(MpegTSWrite, pat_period_us), AV_OPT_TYPE_DURATION,
2069 { .i64 = PAT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2070 { "sdt_period", "SDT retransmission time limit in seconds",
2071 offsetof(MpegTSWrite, sdt_period_us), AV_OPT_TYPE_DURATION,
2072 { .i64 = SDT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2076 static const AVClass mpegts_muxer_class = {
2077 .class_name = "MPEGTS muxer",
2078 .item_name = av_default_item_name,
2080 .version = LIBAVUTIL_VERSION_INT,
2083 AVOutputFormat ff_mpegts_muxer = {
2085 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2086 .mime_type = "video/MP2T",
2087 .extensions = "ts,m2t,m2ts,mts",
2088 .priv_data_size = sizeof(MpegTSWrite),
2089 .audio_codec = AV_CODEC_ID_MP2,
2090 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
2091 .init = mpegts_init,
2092 .write_packet = mpegts_write_packet,
2093 .write_trailer = mpegts_write_end,
2094 .deinit = mpegts_deinit,
2095 .check_bitstream = mpegts_check_bitstream,
2096 .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
2097 .priv_class = &mpegts_muxer_class,