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/ac3_parser_internal.h"
31 #include "libavcodec/internal.h"
34 #include "avio_internal.h"
38 #define PCR_TIME_BASE 27000000
40 /* write DVB SI sections */
42 #define DVB_PRIVATE_NETWORK_START 0xff01
44 /*********************************************/
45 /* mpegts section writer */
47 typedef struct MpegTSSection {
51 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
55 typedef struct MpegTSService {
56 MpegTSSection pmt; /* MPEG-2 PMT table context */
57 int sid; /* service ID */
59 uint8_t provider_name[256];
64 // service_type values as defined in ETSI 300 468
66 MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
67 MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
68 MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
69 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
70 MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
71 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16,
72 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19,
73 MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV = 0x1F,
75 typedef struct MpegTSWrite {
76 const AVClass *av_class;
77 MpegTSSection pat; /* MPEG-2 PAT table */
78 MpegTSSection sdt; /* MPEG-2 SDT table context */
79 MpegTSService **services;
80 int64_t sdt_period; /* SDT period in PCR time base */
81 int64_t pat_period; /* PAT/PMT period in PCR time base */
84 int first_dts_checked;
86 int mux_rate; ///< set to 1 when VBR
90 int transport_stream_id;
91 int original_network_id;
101 int m2ts_textsub_pid;
104 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
105 #define MPEGTS_FLAG_AAC_LATM 0x02
106 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
107 #define MPEGTS_FLAG_SYSTEM_B 0x08
108 #define MPEGTS_FLAG_DISCONT 0x10
112 int64_t pat_period_us;
113 int64_t sdt_period_us;
117 int omit_video_pes_length;
120 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
121 #define DEFAULT_PES_HEADER_FREQ 16
122 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
124 /* The section length is 12 bits. The first 2 are set to 0, the remaining
125 * 10 bits should not exceed 1021. */
126 #define SECTION_LENGTH 1020
128 /* NOTE: 4 bytes must be left at the end for the crc32 */
129 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
132 unsigned char packet[TS_PACKET_SIZE];
133 const unsigned char *buf_ptr;
135 int first, b, len1, left;
137 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
140 buf[len - 4] = (crc >> 24) & 0xff;
141 buf[len - 3] = (crc >> 16) & 0xff;
142 buf[len - 2] = (crc >> 8) & 0xff;
143 buf[len - 1] = crc & 0xff;
145 /* send each packet */
148 first = buf == buf_ptr;
156 s->cc = s->cc + 1 & 0xf;
158 if (s->discontinuity) {
162 s->discontinuity = 0;
165 *q++ = 0; /* 0 offset */
166 len1 = TS_PACKET_SIZE - (q - packet);
169 memcpy(q, buf_ptr, len1);
171 /* add known padding data */
172 left = TS_PACKET_SIZE - (q - packet);
174 memset(q, 0xff, left);
176 s->write_packet(s, packet);
183 static inline void put16(uint8_t **q_ptr, int val)
192 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
193 int version, int sec_num, int last_sec_num,
194 uint8_t *buf, int len)
196 uint8_t section[1024], *q;
197 unsigned int tot_len;
198 /* reserved_future_use field must be set to 1 for SDT */
199 unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000;
201 tot_len = 3 + 5 + len + 4;
202 /* check if not too big */
204 return AVERROR_INVALIDDATA;
208 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
210 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
215 mpegts_write_section(s, section, tot_len);
219 /*********************************************/
222 #define DEFAULT_PROVIDER_NAME "FFmpeg"
223 #define DEFAULT_SERVICE_NAME "Service"
225 /* we retransmit the SI info at this rate */
226 #define SDT_RETRANS_TIME 500
227 #define PAT_RETRANS_TIME 100
228 #define PCR_RETRANS_TIME 20
230 typedef struct MpegTSWriteStream {
231 int pid; /* stream associated pid */
235 int first_timestamp_checked; ///< first pts/dts check needed
236 int prev_payload_key;
241 AVFormatContext *amux;
244 int64_t pcr_period; /* PCR period in PCR time base */
248 int opus_queued_samples;
249 int opus_pending_trim_start;
251 DVBAC3Descriptor *dvb_ac3_desc;
254 static void mpegts_write_pat(AVFormatContext *s)
256 MpegTSWrite *ts = s->priv_data;
257 MpegTSService *service;
258 uint8_t data[SECTION_LENGTH], *q;
262 for (i = 0; i < ts->nb_services; i++) {
263 service = ts->services[i];
264 put16(&q, service->sid);
265 put16(&q, 0xe000 | service->pmt.pid);
267 mpegts_write_section1(&ts->pat, PAT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
271 static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
273 memcpy(*q_ptr, buf, len);
277 static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
280 *q++ = REGISTRATION_DESCRIPTOR;
289 static int get_dvb_stream_type(AVFormatContext *s, AVStream *st)
291 MpegTSWrite *ts = s->priv_data;
292 MpegTSWriteStream *ts_st = st->priv_data;
295 switch (st->codecpar->codec_id) {
296 case AV_CODEC_ID_MPEG1VIDEO:
297 case AV_CODEC_ID_MPEG2VIDEO:
298 stream_type = STREAM_TYPE_VIDEO_MPEG2;
300 case AV_CODEC_ID_MPEG4:
301 stream_type = STREAM_TYPE_VIDEO_MPEG4;
303 case AV_CODEC_ID_H264:
304 stream_type = STREAM_TYPE_VIDEO_H264;
306 case AV_CODEC_ID_HEVC:
307 stream_type = STREAM_TYPE_VIDEO_HEVC;
309 case AV_CODEC_ID_CAVS:
310 stream_type = STREAM_TYPE_VIDEO_CAVS;
312 case AV_CODEC_ID_DIRAC:
313 stream_type = STREAM_TYPE_VIDEO_DIRAC;
315 case AV_CODEC_ID_VC1:
316 stream_type = STREAM_TYPE_VIDEO_VC1;
318 case AV_CODEC_ID_MP2:
319 case AV_CODEC_ID_MP3:
320 if ( st->codecpar->sample_rate > 0
321 && st->codecpar->sample_rate < 32000) {
322 stream_type = STREAM_TYPE_AUDIO_MPEG2;
324 stream_type = STREAM_TYPE_AUDIO_MPEG1;
327 case AV_CODEC_ID_AAC:
328 stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
329 ? STREAM_TYPE_AUDIO_AAC_LATM
330 : STREAM_TYPE_AUDIO_AAC;
332 case AV_CODEC_ID_AAC_LATM:
333 stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
335 case AV_CODEC_ID_AC3:
336 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
337 ? STREAM_TYPE_PRIVATE_DATA
338 : STREAM_TYPE_AUDIO_AC3;
340 case AV_CODEC_ID_EAC3:
341 stream_type = (ts->flags & MPEGTS_FLAG_SYSTEM_B)
342 ? STREAM_TYPE_PRIVATE_DATA
343 : STREAM_TYPE_AUDIO_EAC3;
345 case AV_CODEC_ID_DTS:
346 stream_type = STREAM_TYPE_AUDIO_DTS;
348 case AV_CODEC_ID_TRUEHD:
349 stream_type = STREAM_TYPE_AUDIO_TRUEHD;
351 case AV_CODEC_ID_OPUS:
352 stream_type = STREAM_TYPE_PRIVATE_DATA;
354 case AV_CODEC_ID_TIMED_ID3:
355 stream_type = STREAM_TYPE_METADATA;
357 case AV_CODEC_ID_DVB_SUBTITLE:
358 case AV_CODEC_ID_DVB_TELETEXT:
359 stream_type = STREAM_TYPE_PRIVATE_DATA;
361 case AV_CODEC_ID_SMPTE_KLV:
362 if (st->codecpar->profile == FF_PROFILE_KLVA_SYNC) {
363 stream_type = STREAM_TYPE_METADATA;
365 stream_type = STREAM_TYPE_PRIVATE_DATA;
369 av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
370 "Stream %d, codec %s, is muxed as a private data stream "
371 "and may not be recognized upon reading.\n", st->index,
372 avcodec_get_name(st->codecpar->codec_id));
373 stream_type = STREAM_TYPE_PRIVATE_DATA;
380 static int get_m2ts_stream_type(AVFormatContext *s, AVStream *st)
383 MpegTSWriteStream *ts_st = st->priv_data;
385 switch (st->codecpar->codec_id) {
386 case AV_CODEC_ID_MPEG2VIDEO:
387 stream_type = STREAM_TYPE_VIDEO_MPEG2;
389 case AV_CODEC_ID_H264:
390 stream_type = STREAM_TYPE_VIDEO_H264;
392 case AV_CODEC_ID_VC1:
393 stream_type = STREAM_TYPE_VIDEO_VC1;
395 case AV_CODEC_ID_HEVC:
396 stream_type = STREAM_TYPE_VIDEO_HEVC;
398 case AV_CODEC_ID_PCM_BLURAY:
401 case AV_CODEC_ID_AC3:
404 case AV_CODEC_ID_DTS:
405 stream_type = (st->codecpar->channels > 6) ? 0x85 : 0x82;
407 case AV_CODEC_ID_TRUEHD:
410 case AV_CODEC_ID_EAC3:
413 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
416 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
420 av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
421 "Stream %d, codec %s, is muxed as a private data stream "
422 "and may not be recognized upon reading.\n", st->index,
423 avcodec_get_name(st->codecpar->codec_id));
424 stream_type = STREAM_TYPE_PRIVATE_DATA;
431 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
433 MpegTSWrite *ts = s->priv_data;
434 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
435 int val, stream_type, i, err = 0;
438 put16(&q, 0xe000 | service->pcr_pid);
440 program_info_length_ptr = q;
441 q += 2; /* patched after */
443 /* put program info here */
445 put_registration_descriptor(&q, MKTAG('H', 'D', 'M', 'V'));
446 *q++ = 0x88; // descriptor_tag - hdmv_copy_control_descriptor
447 *q++ = 0x04; // descriptor_length
448 put16(&q, 0x0fff); // CA_System_ID
449 *q++ = 0xfc; // private_data_byte
450 *q++ = 0xfc; // private_data_byte
453 val = 0xf000 | (q - program_info_length_ptr - 2);
454 program_info_length_ptr[0] = val >> 8;
455 program_info_length_ptr[1] = val;
457 for (i = 0; i < s->nb_streams; i++) {
458 AVStream *st = s->streams[i];
459 MpegTSWriteStream *ts_st = st->priv_data;
460 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
461 enum AVCodecID codec_id = st->codecpar->codec_id;
463 if (s->nb_programs) {
465 AVProgram *program = service->program;
467 for (k = 0; k < program->nb_stream_indexes; k++)
468 if (program->stream_index[k] == i) {
477 if (q - data > SECTION_LENGTH - 32) {
482 stream_type = ts->m2ts_mode ? get_m2ts_stream_type(s, st) : get_dvb_stream_type(s, st);
485 put16(&q, 0xe000 | ts_st->pid);
487 q += 2; /* patched after */
489 /* write optional descriptors here */
490 switch (st->codecpar->codec_type) {
491 case AVMEDIA_TYPE_AUDIO:
492 if (codec_id == AV_CODEC_ID_AC3)
493 put_registration_descriptor(&q, MKTAG('A', 'C', '-', '3'));
494 if (codec_id == AV_CODEC_ID_EAC3)
495 put_registration_descriptor(&q, MKTAG('E', 'A', 'C', '3'));
496 if (ts->flags & MPEGTS_FLAG_SYSTEM_B) {
497 if (codec_id == AV_CODEC_ID_AC3) {
498 DVBAC3Descriptor *dvb_ac3_desc = ts_st->dvb_ac3_desc;
500 *q++=0x6a; // AC3 descriptor see A038 DVB SI
503 !!(dvb_ac3_desc->component_type_flag) +
504 !!(dvb_ac3_desc->bsid_flag) +
505 !!(dvb_ac3_desc->mainid_flag) +
506 !!(dvb_ac3_desc->asvc_flag);
509 *q++ = dvb_ac3_desc->component_type_flag << 7 | dvb_ac3_desc->bsid_flag << 6 |
510 dvb_ac3_desc->mainid_flag << 5 | dvb_ac3_desc->asvc_flag << 4;
512 if (dvb_ac3_desc->component_type_flag) *q++ = dvb_ac3_desc->component_type;
513 if (dvb_ac3_desc->bsid_flag) *q++ = dvb_ac3_desc->bsid;
514 if (dvb_ac3_desc->mainid_flag) *q++ = dvb_ac3_desc->mainid;
515 if (dvb_ac3_desc->asvc_flag) *q++ = dvb_ac3_desc->asvc;
517 *q++=1; // 1 byte, all flags sets to 0
518 *q++=0; // omit all fields...
520 } else if (codec_id == AV_CODEC_ID_EAC3) {
521 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
522 *q++=1; // 1 byte, all flags sets to 0
523 *q++=0; // omit all fields...
526 if (codec_id == AV_CODEC_ID_S302M)
527 put_registration_descriptor(&q, MKTAG('B', 'S', 'S', 'D'));
528 if (codec_id == AV_CODEC_ID_OPUS) {
529 /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
530 if (q - data > SECTION_LENGTH - 6 - 4) {
535 put_registration_descriptor(&q, MKTAG('O', 'p', 'u', 's'));
537 *q++ = 0x7f; /* DVB extension descriptor */
541 if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
542 if (st->codecpar->extradata[18] == 0 && st->codecpar->channels <= 2) {
543 /* RTP mapping family */
544 *q++ = st->codecpar->channels;
545 } else if (st->codecpar->extradata[18] == 1 && st->codecpar->channels <= 8 &&
546 st->codecpar->extradata_size >= 21 + st->codecpar->channels) {
547 static const uint8_t coupled_stream_counts[9] = {
548 1, 0, 1, 1, 2, 2, 2, 3, 3
550 static const uint8_t channel_map_a[8][8] = {
557 {0, 4, 1, 2, 3, 5, 6},
558 {0, 6, 1, 2, 3, 4, 5, 7},
560 static const uint8_t channel_map_b[8][8] = {
567 {0, 1, 2, 3, 4, 5, 6},
568 {0, 1, 2, 3, 4, 5, 6, 7},
570 /* Vorbis mapping family */
572 if (st->codecpar->extradata[19] == st->codecpar->channels - coupled_stream_counts[st->codecpar->channels] &&
573 st->codecpar->extradata[20] == coupled_stream_counts[st->codecpar->channels] &&
574 memcmp(&st->codecpar->extradata[21], channel_map_a[st->codecpar->channels-1], st->codecpar->channels) == 0) {
575 *q++ = st->codecpar->channels;
576 } else if (st->codecpar->channels >= 2 && st->codecpar->extradata[19] == st->codecpar->channels &&
577 st->codecpar->extradata[20] == 0 &&
578 memcmp(&st->codecpar->extradata[21], channel_map_b[st->codecpar->channels-1], st->codecpar->channels) == 0) {
579 *q++ = st->codecpar->channels | 0x80;
581 /* Unsupported, could write an extended descriptor here */
582 av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
587 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]);
590 } else if (st->codecpar->channels <= 2) {
591 /* Assume RTP mapping family */
592 *q++ = st->codecpar->channels;
595 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
602 char *next = lang->value;
605 *q++ = ISO_639_LANGUAGE_DESCRIPTOR;
609 for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
610 if (q - data > SECTION_LENGTH - 4) {
614 next = strchr(p, ',');
615 if (strlen(p) != 3 && (!next || next != p + 3))
616 continue; /* not a 3-letter code */
622 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
624 else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
626 else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
629 *q++ = 0; /* undefined type */
635 q -= 2; /* no language codes were written */
638 case AVMEDIA_TYPE_SUBTITLE:
640 const char default_language[] = "und";
641 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
643 if (codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
645 int extradata_copied = 0;
647 *q++ = 0x59; /* subtitling_descriptor */
650 while (strlen(language) >= 3) {
651 if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
659 if (*language != '\0')
662 if (st->codecpar->extradata_size - extradata_copied >= 5) {
663 *q++ = st->codecpar->extradata[extradata_copied + 4]; /* subtitling_type */
664 memcpy(q, st->codecpar->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
665 extradata_copied += 5;
669 * 0x10 - normal with no monitor aspect ratio criticality
670 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
671 *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
672 if ((st->codecpar->extradata_size == 4) && (extradata_copied == 0)) {
673 /* support of old 4-byte extradata format */
674 memcpy(q, st->codecpar->extradata, 4); /* composition_page_id and ancillary_page_id */
675 extradata_copied += 4;
678 put16(&q, 1); /* composition_page_id */
679 put16(&q, 1); /* ancillary_page_id */
684 *len_ptr = q - len_ptr - 1;
685 } else if (codec_id == AV_CODEC_ID_DVB_TELETEXT) {
686 uint8_t *len_ptr = NULL;
687 int extradata_copied = 0;
689 /* The descriptor tag. teletext_descriptor */
693 while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
698 if (*language != '\0')
701 if (st->codecpar->extradata_size - 1 > extradata_copied) {
702 memcpy(q, st->codecpar->extradata + extradata_copied, 2);
703 extradata_copied += 2;
706 /* The Teletext descriptor:
707 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
708 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
709 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
715 *len_ptr = q - len_ptr - 1;
719 case AVMEDIA_TYPE_VIDEO:
720 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
721 put_registration_descriptor(&q, MKTAG('d', 'r', 'a', 'c'));
722 } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
723 put_registration_descriptor(&q, MKTAG('V', 'C', '-', '1'));
724 } else if (stream_type == STREAM_TYPE_VIDEO_HEVC && s->strict_std_compliance <= FF_COMPLIANCE_NORMAL) {
725 put_registration_descriptor(&q, MKTAG('H', 'E', 'V', 'C'));
728 case AVMEDIA_TYPE_DATA:
729 if (codec_id == AV_CODEC_ID_SMPTE_KLV) {
730 put_registration_descriptor(&q, MKTAG('K', 'L', 'V', 'A'));
731 } else if (codec_id == AV_CODEC_ID_TIMED_ID3) {
732 const char *tag = "ID3 ";
733 *q++ = METADATA_DESCRIPTOR;
735 put16(&q, 0xffff); /* metadata application format */
736 putbuf(&q, tag, strlen(tag));
737 *q++ = 0xff; /* metadata format */
738 putbuf(&q, tag, strlen(tag));
739 *q++ = 0; /* metadata service ID */
740 *q++ = 0xF; /* metadata_locator_record_flag|MPEG_carriage_flags|reserved */
745 val = 0xf000 | (q - desc_length_ptr - 2);
746 desc_length_ptr[0] = val >> 8;
747 desc_length_ptr[1] = val;
751 av_log(s, AV_LOG_ERROR,
752 "The PMT section cannot fit stream %d and all following streams.\n"
753 "Try reducing the number of languages in the audio streams "
754 "or the total number of streams.\n", i);
756 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
761 static void mpegts_write_sdt(AVFormatContext *s)
763 MpegTSWrite *ts = s->priv_data;
764 MpegTSService *service;
765 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
766 int i, running_status, free_ca_mode, val;
769 put16(&q, ts->original_network_id);
771 for (i = 0; i < ts->nb_services; i++) {
772 service = ts->services[i];
773 put16(&q, service->sid);
774 *q++ = 0xfc | 0x00; /* currently no EIT info */
775 desc_list_len_ptr = q;
777 running_status = 4; /* running */
780 /* write only one descriptor for the service name and provider */
784 *q++ = ts->service_type;
785 putbuf(&q, service->provider_name, service->provider_name[0] + 1);
786 putbuf(&q, service->name, service->name[0] + 1);
787 desc_len_ptr[0] = q - desc_len_ptr - 1;
789 /* fill descriptor length */
790 val = (running_status << 13) | (free_ca_mode << 12) |
791 (q - desc_list_len_ptr - 2);
792 desc_list_len_ptr[0] = val >> 8;
793 desc_list_len_ptr[1] = val;
795 mpegts_write_section1(&ts->sdt, SDT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
799 /* This stores a string in buf with the correct encoding and also sets the
800 * first byte as the length. !str is accepted for an empty string.
801 * If the string is already encoded, invalid UTF-8 or has no multibyte sequence
802 * then we keep it as is, otherwise we signal UTF-8 encoding. */
803 static int encode_str8(uint8_t *buf, const char *str)
808 str_len = strlen(str);
809 if (str[0] && (unsigned)str[0] >= 0x20) { /* Make sure the string is not already encoded. */
810 const uint8_t *q = str;
811 int has_multibyte = 0;
814 GET_UTF8(code, *q++, goto invalid;) /* Is it valid UTF-8? */
815 has_multibyte |= (code > 127); /* Does it have multibyte UTF-8 chars in it? */
817 if (has_multibyte) { /* If we have multibyte chars and valid UTF-8, then encode as such! */
819 return AVERROR(EINVAL);
820 buf[0] = str_len + 1;
822 memcpy(&buf[2], str, str_len);
827 /* Otherwise let's just encode the string as is! */
829 return AVERROR(EINVAL);
831 memcpy(&buf[1], str, str_len);
835 static int64_t get_pcr(const MpegTSWrite *ts)
837 return av_rescale(ts->total_size + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
841 static void write_packet(AVFormatContext *s, const uint8_t *packet)
843 MpegTSWrite *ts = s->priv_data;
845 int64_t pcr = get_pcr(s->priv_data);
846 uint32_t tp_extra_header = pcr % 0x3fffffff;
847 tp_extra_header = AV_RB32(&tp_extra_header);
848 avio_write(s->pb, (unsigned char *) &tp_extra_header,
849 sizeof(tp_extra_header));
851 avio_write(s->pb, packet, TS_PACKET_SIZE);
852 ts->total_size += TS_PACKET_SIZE;
855 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
857 AVFormatContext *ctx = s->opaque;
858 write_packet(ctx, packet);
861 static MpegTSService *mpegts_add_service(AVFormatContext *s, int sid,
862 const AVDictionary *metadata,
865 MpegTSWrite *ts = s->priv_data;
866 MpegTSService *service;
867 AVDictionaryEntry *title, *provider;
868 char default_service_name[32];
869 const char *service_name;
870 const char *provider_name;
872 title = av_dict_get(metadata, "service_name", NULL, 0);
874 title = av_dict_get(metadata, "title", NULL, 0);
875 snprintf(default_service_name, sizeof(default_service_name), "%s%02d", DEFAULT_SERVICE_NAME, ts->nb_services + 1);
876 service_name = title ? title->value : default_service_name;
877 provider = av_dict_get(metadata, "service_provider", NULL, 0);
878 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
880 service = av_mallocz(sizeof(MpegTSService));
883 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
885 service->pcr_pid = 0x1fff;
886 if (encode_str8(service->provider_name, provider_name) < 0 ||
887 encode_str8(service->name, service_name) < 0) {
888 av_log(s, AV_LOG_ERROR, "Too long service or provider name\n");
891 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
894 service->pmt.write_packet = section_write_packet;
895 service->pmt.opaque = s;
896 service->pmt.cc = 15;
897 service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
898 service->program = program;
906 static void enable_pcr_generation_for_stream(AVFormatContext *s, AVStream *pcr_st)
908 MpegTSWrite *ts = s->priv_data;
909 MpegTSWriteStream *ts_st = pcr_st->priv_data;
911 if (ts->mux_rate > 1 || ts->pcr_period_ms >= 0) {
912 int pcr_period_ms = ts->pcr_period_ms == -1 ? PCR_RETRANS_TIME : ts->pcr_period_ms;
913 ts_st->pcr_period = av_rescale(pcr_period_ms, PCR_TIME_BASE, 1000);
915 /* By default, for VBR we select the highest multiple of frame duration which is less than 100 ms. */
916 int64_t frame_period = 0;
917 if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
918 int frame_size = av_get_audio_frame_duration2(pcr_st->codecpar, 0);
920 av_log(s, AV_LOG_WARNING, "frame size not set\n");
923 frame_period = av_rescale_rnd(frame_size, PCR_TIME_BASE, pcr_st->codecpar->sample_rate, AV_ROUND_UP);
924 } else if (pcr_st->avg_frame_rate.num) {
925 frame_period = av_rescale_rnd(pcr_st->avg_frame_rate.den, PCR_TIME_BASE, pcr_st->avg_frame_rate.num, AV_ROUND_UP);
927 if (frame_period > 0 && frame_period <= PCR_TIME_BASE / 10)
928 ts_st->pcr_period = frame_period * (PCR_TIME_BASE / 10 / frame_period);
930 ts_st->pcr_period = 1;
933 // output a PCR as soon as possible
934 ts_st->last_pcr = ts->first_pcr - ts_st->pcr_period;
937 static void select_pcr_streams(AVFormatContext *s)
939 MpegTSWrite *ts = s->priv_data;
941 for (int i = 0; i < ts->nb_services; i++) {
942 MpegTSService *service = ts->services[i];
943 AVStream *pcr_st = NULL;
944 AVProgram *program = service->program;
945 int nb_streams = program ? program->nb_stream_indexes : s->nb_streams;
947 for (int j = 0; j < nb_streams; j++) {
948 AVStream *st = s->streams[program ? program->stream_index[j] : j];
950 pcr_st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
957 MpegTSWriteStream *ts_st = pcr_st->priv_data;
958 service->pcr_pid = ts_st->pid;
959 enable_pcr_generation_for_stream(s, pcr_st);
960 av_log(s, AV_LOG_VERBOSE, "service %i using PCR in pid=%i, pcr_period=%"PRId64"ms\n",
961 service->sid, service->pcr_pid, av_rescale(ts_st->pcr_period, 1000, PCR_TIME_BASE));
966 static int mpegts_init(AVFormatContext *s)
968 MpegTSWrite *ts = s->priv_data;
972 if (ts->m2ts_mode == -1) {
973 if (av_match_ext(s->url, "m2ts")) {
980 ts->m2ts_video_pid = M2TS_VIDEO_PID;
981 ts->m2ts_audio_pid = M2TS_AUDIO_START_PID;
982 ts->m2ts_pgssub_pid = M2TS_PGSSUB_START_PID;
983 ts->m2ts_textsub_pid = M2TS_TEXTSUB_PID;
986 ts->pmt_start_pid = M2TS_PMT_PID;
987 if (s->nb_programs > 1) {
988 av_log(s, AV_LOG_ERROR, "Only one program is allowed in m2ts mode!\n");
989 return AVERROR(EINVAL);
993 if (s->max_delay < 0) /* Not set by the caller */
996 // round up to a whole number of TS packets
997 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
999 if (!s->nb_programs) {
1000 /* allocate a single DVB service */
1001 if (!mpegts_add_service(s, ts->service_id, s->metadata, NULL))
1002 return AVERROR(ENOMEM);
1004 for (i = 0; i < s->nb_programs; i++) {
1005 AVProgram *program = s->programs[i];
1006 if (!mpegts_add_service(s, program->id, program->metadata, program))
1007 return AVERROR(ENOMEM);
1011 ts->pat.pid = PAT_PID;
1012 /* Initialize at 15 so that it wraps and is equal to 0 for the
1013 * first packet we write. */
1015 ts->pat.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1016 ts->pat.write_packet = section_write_packet;
1019 ts->sdt.pid = SDT_PID;
1021 ts->sdt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
1022 ts->sdt.write_packet = section_write_packet;
1025 /* assign pids to each stream */
1026 for (i = 0; i < s->nb_streams; i++) {
1027 AVStream *st = s->streams[i];
1028 MpegTSWriteStream *ts_st;
1030 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
1032 return AVERROR(ENOMEM);
1034 st->priv_data = ts_st;
1036 avpriv_set_pts_info(st, 33, 1, 90000);
1038 ts_st->payload = av_mallocz(ts->pes_payload_size);
1039 if (!ts_st->payload) {
1040 return AVERROR(ENOMEM);
1043 /* MPEG pid values < 16 are reserved. Applications which set st->id in
1044 * this range are assigned a calculated pid. */
1046 if (ts->m2ts_mode) {
1047 switch (st->codecpar->codec_type) {
1048 case AVMEDIA_TYPE_VIDEO:
1049 ts_st->pid = ts->m2ts_video_pid++;
1051 case AVMEDIA_TYPE_AUDIO:
1052 ts_st->pid = ts->m2ts_audio_pid++;
1054 case AVMEDIA_TYPE_SUBTITLE:
1055 switch (st->codecpar->codec_id) {
1056 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
1057 ts_st->pid = ts->m2ts_pgssub_pid++;
1059 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
1060 ts_st->pid = ts->m2ts_textsub_pid++;
1065 if (ts->m2ts_video_pid > M2TS_VIDEO_PID + 1 ||
1066 ts->m2ts_audio_pid > M2TS_AUDIO_START_PID + 32 ||
1067 ts->m2ts_pgssub_pid > M2TS_PGSSUB_START_PID + 32 ||
1068 ts->m2ts_textsub_pid > M2TS_TEXTSUB_PID + 1 ||
1070 av_log(s, AV_LOG_ERROR, "Cannot automatically assign PID for stream %d\n", st->index);
1071 return AVERROR(EINVAL);
1074 ts_st->pid = ts->start_pid + i;
1077 ts_st->pid = st->id;
1079 if (ts_st->pid >= 0x1FFF) {
1080 av_log(s, AV_LOG_ERROR,
1081 "Invalid stream id %d, must be less than 8191\n", st->id);
1082 return AVERROR(EINVAL);
1084 for (j = 0; j < ts->nb_services; j++) {
1085 if (ts->services[j]->pmt.pid > LAST_OTHER_PID) {
1086 av_log(s, AV_LOG_ERROR,
1087 "Invalid PMT PID %d, must be less than %d\n", ts->services[j]->pmt.pid, LAST_OTHER_PID + 1);
1088 return AVERROR(EINVAL);
1090 if (ts_st->pid == ts->services[j]->pmt.pid) {
1091 av_log(s, AV_LOG_ERROR, "PID %d cannot be both elementary and PMT PID\n", ts_st->pid);
1092 return AVERROR(EINVAL);
1095 for (j = 0; j < i; j++) {
1096 MpegTSWriteStream *ts_st_prev = s->streams[j]->priv_data;
1097 if (ts_st_prev->pid == ts_st->pid) {
1098 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
1099 return AVERROR(EINVAL);
1102 ts_st->payload_pts = AV_NOPTS_VALUE;
1103 ts_st->payload_dts = AV_NOPTS_VALUE;
1105 ts_st->discontinuity = ts->flags & MPEGTS_FLAG_DISCONT;
1106 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1107 st->codecpar->extradata_size > 0) {
1109 ts_st->amux = avformat_alloc_context();
1111 return AVERROR(ENOMEM);
1113 ts_st->amux->oformat =
1114 av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
1116 if (!ts_st->amux->oformat) {
1117 return AVERROR(EINVAL);
1119 if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
1120 return AVERROR(ENOMEM);
1122 ret = avcodec_parameters_copy(ast->codecpar, st->codecpar);
1125 ast->time_base = st->time_base;
1126 ret = avformat_write_header(ts_st->amux, NULL);
1130 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1131 ts_st->opus_pending_trim_start = st->codecpar->initial_padding * 48000 / st->codecpar->sample_rate;
1136 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
1138 select_pcr_streams(s);
1140 ts->last_pat_ts = AV_NOPTS_VALUE;
1141 ts->last_sdt_ts = AV_NOPTS_VALUE;
1142 ts->pat_period = av_rescale(ts->pat_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1143 ts->sdt_period = av_rescale(ts->sdt_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1145 if (ts->mux_rate == 1)
1146 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
1148 av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
1149 av_log(s, AV_LOG_VERBOSE,
1150 "sdt every %"PRId64" ms, pat/pmt every %"PRId64" ms\n",
1151 av_rescale(ts->sdt_period, 1000, PCR_TIME_BASE),
1152 av_rescale(ts->pat_period, 1000, PCR_TIME_BASE));
1157 /* send SDT, PAT and PMT tables regularly */
1158 static void retransmit_si_info(AVFormatContext *s, int force_pat, int force_sdt, int64_t pcr)
1160 MpegTSWrite *ts = s->priv_data;
1163 if ((pcr != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
1164 (pcr != AV_NOPTS_VALUE && pcr - ts->last_sdt_ts >= ts->sdt_period) ||
1167 if (pcr != AV_NOPTS_VALUE)
1168 ts->last_sdt_ts = FFMAX(pcr, ts->last_sdt_ts);
1169 mpegts_write_sdt(s);
1171 if ((pcr != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
1172 (pcr != AV_NOPTS_VALUE && pcr - ts->last_pat_ts >= ts->pat_period) ||
1174 if (pcr != AV_NOPTS_VALUE)
1175 ts->last_pat_ts = FFMAX(pcr, ts->last_pat_ts);
1176 mpegts_write_pat(s);
1177 for (i = 0; i < ts->nb_services; i++)
1178 mpegts_write_pmt(s, ts->services[i]);
1182 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1184 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
1186 *buf++ = pcr_high >> 25;
1187 *buf++ = pcr_high >> 17;
1188 *buf++ = pcr_high >> 9;
1189 *buf++ = pcr_high >> 1;
1190 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1196 /* Write a single null transport stream packet */
1197 static void mpegts_insert_null_packet(AVFormatContext *s)
1200 uint8_t buf[TS_PACKET_SIZE];
1207 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
1208 write_packet(s, buf);
1211 /* Write a single transport stream packet with a PCR and no payload */
1212 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
1214 MpegTSWrite *ts = s->priv_data;
1215 MpegTSWriteStream *ts_st = st->priv_data;
1217 uint8_t buf[TS_PACKET_SIZE];
1221 *q++ = ts_st->pid >> 8;
1223 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1224 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1225 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1226 *q++ = 0x10; /* Adaptation flags: PCR present */
1227 if (ts_st->discontinuity) {
1229 ts_st->discontinuity = 0;
1232 /* PCR coded into 6 bytes */
1233 q += write_pcr_bits(q, get_pcr(ts));
1235 /* stuffing bytes */
1236 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
1237 write_packet(s, buf);
1240 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1244 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1246 val = (((pts >> 15) & 0x7fff) << 1) | 1;
1249 val = (((pts) & 0x7fff) << 1) | 1;
1254 /* Set an adaptation field flag in an MPEG-TS packet*/
1255 static void set_af_flag(uint8_t *pkt, int flag)
1257 // expect at least one flag to set
1260 if ((pkt[3] & 0x20) == 0) {
1261 // no AF yet, set adaptation field flag
1263 // 1 byte length, no flags
1270 /* Extend the adaptation field by size bytes */
1271 static void extend_af(uint8_t *pkt, int size)
1273 // expect already existing adaptation field
1274 av_assert0(pkt[3] & 0x20);
1278 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1279 static uint8_t *get_ts_payload_start(uint8_t *pkt)
1282 return pkt + 5 + pkt[4];
1287 /* Add a PES header to the front of the payload, and segment into an integer
1288 * number of TS packets. The final TS packet is padded using an oversized
1289 * adaptation header to exactly fill the last TS packet.
1290 * NOTE: 'payload' contains a complete PES payload. */
1291 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
1292 const uint8_t *payload, int payload_size,
1293 int64_t pts, int64_t dts, int key, int stream_id)
1295 MpegTSWriteStream *ts_st = st->priv_data;
1296 MpegTSWrite *ts = s->priv_data;
1297 uint8_t buf[TS_PACKET_SIZE];
1299 int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
1300 int afc_len, stuffing_len;
1301 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1302 int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1305 av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
1306 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1310 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1313 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1317 while (payload_size > 0) {
1318 int64_t pcr = AV_NOPTS_VALUE;
1319 if (ts->mux_rate > 1)
1321 else if (dts != AV_NOPTS_VALUE)
1322 pcr = (dts - delay) * 300;
1324 retransmit_si_info(s, force_pat, force_sdt, pcr);
1329 if (ts->mux_rate > 1) {
1330 /* Send PCR packets for all PCR streams if needed */
1332 if (pcr >= ts->next_pcr) {
1333 int64_t next_pcr = INT64_MAX;
1334 for (int i = 0; i < s->nb_streams; i++) {
1335 /* Make the current stream the last, because for that we
1336 * can insert the pcr into the payload later */
1337 int st2_index = i < st->index ? i : (i + 1 == s->nb_streams ? st->index : i + 1);
1338 AVStream *st2 = s->streams[st2_index];
1339 MpegTSWriteStream *ts_st2 = st2->priv_data;
1340 if (ts_st2->pcr_period) {
1341 if (pcr - ts_st2->last_pcr >= ts_st2->pcr_period) {
1342 ts_st2->last_pcr = FFMAX(pcr - ts_st2->pcr_period, ts_st2->last_pcr + ts_st2->pcr_period);
1344 mpegts_insert_pcr_only(s, st2);
1350 next_pcr = FFMIN(next_pcr, ts_st2->last_pcr + ts_st2->pcr_period);
1353 ts->next_pcr = next_pcr;
1355 if (dts != AV_NOPTS_VALUE && (dts - pcr / 300) > delay) {
1356 /* pcr insert gets priority over null packet insert */
1358 mpegts_insert_pcr_only(s, st);
1360 mpegts_insert_null_packet(s);
1361 /* recalculate write_pcr and possibly retransmit si_info */
1364 } else if (ts_st->pcr_period && pcr != AV_NOPTS_VALUE) {
1365 if (pcr - ts_st->last_pcr >= ts_st->pcr_period && is_start) {
1366 ts_st->last_pcr = FFMAX(pcr - ts_st->pcr_period, ts_st->last_pcr + ts_st->pcr_period);
1371 /* prepare packet header */
1374 val = ts_st->pid >> 8;
1375 if (ts->m2ts_mode && st->codecpar->codec_id == AV_CODEC_ID_AC3)
1381 ts_st->cc = ts_st->cc + 1 & 0xf;
1382 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1383 if (ts_st->discontinuity) {
1384 set_af_flag(buf, 0x80);
1385 q = get_ts_payload_start(buf);
1386 ts_st->discontinuity = 0;
1388 if (key && is_start && pts != AV_NOPTS_VALUE) {
1389 // set Random Access for key frames
1390 if (ts_st->pcr_period)
1392 set_af_flag(buf, 0x40);
1393 q = get_ts_payload_start(buf);
1396 set_af_flag(buf, 0x10);
1397 q = get_ts_payload_start(buf);
1398 // add 11, pcr references the last byte of program clock reference base
1399 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1400 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1401 extend_af(buf, write_pcr_bits(q, pcr));
1402 q = get_ts_payload_start(buf);
1405 int pes_extension = 0;
1406 int pes_header_stuffing_bytes = 0;
1407 /* write PES header */
1411 is_dvb_subtitle = 0;
1412 is_dvb_teletext = 0;
1413 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1414 if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC)
1415 *q++ = STREAM_ID_EXTENDED_STREAM_ID;
1417 *q++ = STREAM_ID_VIDEO_STREAM_0;
1418 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1419 (st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
1420 st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
1421 st->codecpar->codec_id == AV_CODEC_ID_AAC)) {
1422 *q++ = STREAM_ID_AUDIO_STREAM_0;
1423 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1424 st->codecpar->codec_id == AV_CODEC_ID_AC3 &&
1426 *q++ = STREAM_ID_EXTENDED_STREAM_ID;
1427 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
1428 st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
1429 *q++ = STREAM_ID_PRIVATE_STREAM_1;
1430 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1431 *q++ = stream_id != -1 ? stream_id : STREAM_ID_METADATA_STREAM;
1433 if (stream_id == STREAM_ID_PRIVATE_STREAM_1) /* asynchronous KLV */
1434 pts = dts = AV_NOPTS_VALUE;
1436 *q++ = STREAM_ID_PRIVATE_STREAM_1;
1437 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1438 if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1439 is_dvb_subtitle = 1;
1440 } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1441 is_dvb_teletext = 1;
1447 if (pts != AV_NOPTS_VALUE) {
1451 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1455 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1456 st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1457 /* set PES_extension_flag */
1461 /* One byte for PES2 extension flag +
1462 * one byte for extension length +
1463 * one byte for extension id */
1466 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1467 * otherwise it will not play sound on blu-ray
1469 if (ts->m2ts_mode &&
1470 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1471 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1472 /* set PES_extension_flag */
1477 if (is_dvb_teletext) {
1478 pes_header_stuffing_bytes = 0x24 - header_len;
1481 len = payload_size + header_len + 3;
1482 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1483 if (is_dvb_subtitle) {
1489 if (ts->omit_video_pes_length && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1495 /* data alignment indicator is required for subtitle and data streams */
1496 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
1501 if (pts != AV_NOPTS_VALUE) {
1502 write_pts(q, flags >> 6, pts);
1505 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1506 write_pts(q, 1, dts);
1509 if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1510 flags = 0x01; /* set PES_extension_flag_2 */
1512 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1513 /* Set the stream ID extension flag bit to 0 and
1514 * write the extended stream ID. */
1517 /* For Blu-ray AC3 Audio Setting extended flags */
1518 if (ts->m2ts_mode &&
1520 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1521 flags = 0x01; /* set PES_extension_flag_2 */
1523 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1524 *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1528 if (is_dvb_subtitle) {
1529 /* First two fields of DVB subtitles PES data:
1530 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1531 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1535 if (is_dvb_teletext) {
1536 memset(q, 0xff, pes_header_stuffing_bytes);
1537 q += pes_header_stuffing_bytes;
1542 header_len = q - buf;
1544 len = TS_PACKET_SIZE - header_len;
1545 if (len > payload_size)
1547 stuffing_len = TS_PACKET_SIZE - header_len - len;
1548 if (stuffing_len > 0) {
1549 /* add stuffing with AFC */
1550 if (buf[3] & 0x20) {
1551 /* stuffing already present: increase its size */
1552 afc_len = buf[4] + 1;
1553 memmove(buf + 4 + afc_len + stuffing_len,
1555 header_len - (4 + afc_len));
1556 buf[4] += stuffing_len;
1557 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1560 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1562 buf[4] = stuffing_len - 1;
1563 if (stuffing_len >= 2) {
1565 memset(buf + 6, 0xff, stuffing_len - 2);
1570 if (is_dvb_subtitle && payload_size == len) {
1571 memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1572 buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1574 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1578 payload_size -= len;
1579 write_packet(s, buf);
1581 ts_st->prev_payload_key = key;
1584 int ff_check_h264_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, "H.264 bitstream malformed, "
1589 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1590 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1591 return AVERROR_INVALIDDATA;
1593 av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1595 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1596 av_log(s, AV_LOG_WARNING, "\n");
1601 static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1603 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1604 if (!st->nb_frames) {
1605 av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1606 return AVERROR_PATCHWELCOME;
1608 av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1610 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1611 av_log(s, AV_LOG_WARNING, "\n");
1616 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1617 * Released under the LGPL v2.1+, written by
1618 * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1620 static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
1622 static const int durations[32] = {
1623 480, 960, 1920, 2880, /* Silk NB */
1624 480, 960, 1920, 2880, /* Silk MB */
1625 480, 960, 1920, 2880, /* Silk WB */
1626 480, 960, /* Hybrid SWB */
1627 480, 960, /* Hybrid FB */
1628 120, 240, 480, 960, /* CELT NB */
1629 120, 240, 480, 960, /* CELT NB */
1630 120, 240, 480, 960, /* CELT NB */
1631 120, 240, 480, 960, /* CELT NB */
1633 int toc, frame_duration, nframes, duration;
1640 frame_duration = durations[toc >> 3];
1654 nframes = pkt->data[1] & 63;
1658 duration = nframes * frame_duration;
1659 if (duration > 5760) {
1660 av_log(s, AV_LOG_WARNING,
1661 "Opus packet duration > 120 ms, invalid");
1668 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1670 AVStream *st = s->streams[pkt->stream_index];
1671 int size = pkt->size;
1672 uint8_t *buf = pkt->data;
1673 uint8_t *data = NULL;
1674 MpegTSWrite *ts = s->priv_data;
1675 MpegTSWriteStream *ts_st = st->priv_data;
1676 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1677 const int64_t max_audio_delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) / 2;
1678 int64_t dts = pkt->dts, pts = pkt->pts;
1679 int opus_samples = 0;
1681 uint8_t *side_data = NULL;
1684 side_data = av_packet_get_side_data(pkt,
1685 AV_PKT_DATA_MPEGTS_STREAM_ID,
1688 stream_id = side_data[0];
1690 if (ts->copyts < 1) {
1691 if (!ts->first_dts_checked && dts != AV_NOPTS_VALUE) {
1692 ts->first_pcr += dts * 300;
1693 ts->first_dts_checked = 1;
1696 if (pts != AV_NOPTS_VALUE)
1698 if (dts != AV_NOPTS_VALUE)
1702 if (!ts_st->first_timestamp_checked && (pts == AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE)) {
1703 av_log(s, AV_LOG_ERROR, "first pts and dts value must be set\n");
1704 return AVERROR_INVALIDDATA;
1706 ts_st->first_timestamp_checked = 1;
1708 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1709 const uint8_t *p = buf, *buf_end = p + size;
1710 uint32_t state = -1;
1711 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1712 int ret = ff_check_h264_startcode(s, st, pkt);
1716 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1720 p = avpriv_find_start_code(p, buf_end, &state);
1721 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", state & 0x1f);
1722 if ((state & 0x1f) == 7)
1724 } while (p < buf_end && (state & 0x1f) != 9 &&
1725 (state & 0x1f) != 5 && (state & 0x1f) != 1);
1727 if ((state & 0x1f) != 5)
1729 if ((state & 0x1f) != 9) { // AUD NAL
1730 data = av_malloc(pkt->size + 6 + extradd);
1732 return AVERROR(ENOMEM);
1733 memcpy(data + 6, st->codecpar->extradata, extradd);
1734 memcpy(data + 6 + extradd, pkt->data, pkt->size);
1735 AV_WB32(data, 0x00000001);
1737 data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1739 size = pkt->size + 6 + extradd;
1741 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
1742 if (pkt->size < 2) {
1743 av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1744 return AVERROR_INVALIDDATA;
1746 if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1751 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1752 "and extradata missing\n");
1754 av_init_packet(&pkt2);
1755 pkt2.data = pkt->data;
1756 pkt2.size = pkt->size;
1757 av_assert0(pkt->dts != AV_NOPTS_VALUE);
1758 pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1760 ret = avio_open_dyn_buf(&ts_st->amux->pb);
1764 ret = av_write_frame(ts_st->amux, &pkt2);
1766 ffio_free_dyn_buf(&ts_st->amux->pb);
1769 size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1770 ts_st->amux->pb = NULL;
1774 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1775 const uint8_t *p = buf, *buf_end = p + size;
1776 uint32_t state = -1;
1777 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1778 int ret = check_hevc_startcode(s, st, pkt);
1782 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1786 p = avpriv_find_start_code(p, buf_end, &state);
1787 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", (state & 0x7e)>>1);
1788 if ((state & 0x7e) == 2*32)
1790 } while (p < buf_end && (state & 0x7e) != 2*35 &&
1791 (state & 0x7e) >= 2*32);
1793 if ((state & 0x7e) < 2*16 || (state & 0x7e) >= 2*24)
1795 if ((state & 0x7e) != 2*35) { // AUD NAL
1796 data = av_malloc(pkt->size + 7 + extradd);
1798 return AVERROR(ENOMEM);
1799 memcpy(data + 7, st->codecpar->extradata, extradd);
1800 memcpy(data + 7 + extradd, pkt->data, pkt->size);
1801 AV_WB32(data, 0x00000001);
1804 data[6] = 0x50; // any slice type (0x4) + rbsp stop one bit
1806 size = pkt->size + 7 + extradd;
1808 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1809 if (pkt->size < 2) {
1810 av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
1811 return AVERROR_INVALIDDATA;
1814 /* Add Opus control header */
1815 if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
1819 int ctrl_header_size;
1820 int trim_start = 0, trim_end = 0;
1822 opus_samples = opus_get_packet_samples(s, pkt);
1824 side_data = av_packet_get_side_data(pkt,
1825 AV_PKT_DATA_SKIP_SAMPLES,
1828 if (side_data && side_data_size >= 10) {
1829 trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate;
1832 ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
1833 if (ts_st->opus_pending_trim_start)
1834 ctrl_header_size += 2;
1836 ctrl_header_size += 2;
1838 data = av_malloc(ctrl_header_size);
1840 return AVERROR(ENOMEM);
1844 if (ts_st->opus_pending_trim_start)
1852 data[i] = FFMIN(n, 255);
1857 av_assert0(2 + pkt->size / 255 + 1 == i);
1859 if (ts_st->opus_pending_trim_start) {
1860 trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
1861 AV_WB16(data + i, trim_start);
1863 ts_st->opus_pending_trim_start -= trim_start;
1866 trim_end = FFMIN(trim_end, opus_samples - trim_start);
1867 AV_WB16(data + i, trim_end);
1871 memcpy(data + i, pkt->data, pkt->size);
1873 size = ctrl_header_size;
1875 /* TODO: Can we get TS formatted data here? If so we will
1876 * need to count the samples of that too! */
1877 av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
1879 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3 && !ts_st->dvb_ac3_desc) {
1880 AC3HeaderInfo *hdr = NULL;
1882 if (avpriv_ac3_parse_header(&hdr, pkt->data, pkt->size) >= 0) {
1883 uint8_t number_of_channels_flag;
1884 uint8_t service_type_flag;
1885 uint8_t full_service_flag = 1;
1886 DVBAC3Descriptor *dvb_ac3_desc;
1888 dvb_ac3_desc = av_mallocz(sizeof(*dvb_ac3_desc));
1889 if (!dvb_ac3_desc) {
1891 return AVERROR(ENOMEM);
1894 service_type_flag = hdr->bitstream_mode;
1895 switch (hdr->channel_mode) {
1896 case AC3_CHMODE_DUALMONO:
1897 number_of_channels_flag = 1;
1899 case AC3_CHMODE_MONO:
1900 number_of_channels_flag = 0;
1902 case AC3_CHMODE_STEREO:
1903 if (hdr->dolby_surround_mode == AC3_DSURMOD_ON)
1904 number_of_channels_flag = 3;
1906 number_of_channels_flag = 2;
1909 case AC3_CHMODE_2F1R:
1910 case AC3_CHMODE_3F1R:
1911 case AC3_CHMODE_2F2R:
1912 case AC3_CHMODE_3F2R:
1913 number_of_channels_flag = 4;
1915 default: /* reserved */
1916 number_of_channels_flag = 7;
1920 if (service_type_flag == 1 || service_type_flag == 4 ||
1921 (service_type_flag == 7 && !number_of_channels_flag))
1922 full_service_flag = 0;
1924 dvb_ac3_desc->component_type_flag = 1;
1925 dvb_ac3_desc->component_type = (full_service_flag << 6) |
1926 ((service_type_flag & 0x7) << 3) |
1927 (number_of_channels_flag & 0x7);
1928 dvb_ac3_desc->bsid_flag = 1;
1929 dvb_ac3_desc->bsid = hdr->bitstream_id;
1930 dvb_ac3_desc->mainid_flag = 0;
1931 dvb_ac3_desc->asvc_flag = 0;
1933 ts_st->dvb_ac3_desc = dvb_ac3_desc;
1938 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1939 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1940 dts - ts_st->payload_dts >= max_audio_delay) ||
1941 ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
1942 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1943 ts_st->payload_pts, ts_st->payload_dts,
1944 ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id);
1945 ts_st->payload_size = 0;
1946 ts_st->opus_queued_samples = 0;
1949 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
1950 av_assert0(!ts_st->payload_size);
1951 // for video and subtitle, write a single pes packet
1952 mpegts_write_pes(s, st, buf, size, pts, dts,
1953 pkt->flags & AV_PKT_FLAG_KEY, stream_id);
1954 ts_st->opus_queued_samples = 0;
1959 if (!ts_st->payload_size) {
1960 ts_st->payload_pts = pts;
1961 ts_st->payload_dts = dts;
1962 ts_st->payload_flags = pkt->flags;
1965 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1966 ts_st->payload_size += size;
1967 ts_st->opus_queued_samples += opus_samples;
1974 static void mpegts_write_flush(AVFormatContext *s)
1976 MpegTSWrite *ts = s->priv_data;
1979 /* flush current packets */
1980 for (i = 0; i < s->nb_streams; i++) {
1981 AVStream *st = s->streams[i];
1982 MpegTSWriteStream *ts_st = st->priv_data;
1983 if (ts_st->payload_size > 0) {
1984 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1985 ts_st->payload_pts, ts_st->payload_dts,
1986 ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
1987 ts_st->payload_size = 0;
1988 ts_st->opus_queued_samples = 0;
1992 if (ts->m2ts_mode) {
1993 int packets = (avio_tell(s->pb) / (TS_PACKET_SIZE + 4)) % 32;
1994 while (packets++ < 32)
1995 mpegts_insert_null_packet(s);
1999 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
2002 mpegts_write_flush(s);
2005 return mpegts_write_packet_internal(s, pkt);
2009 static int mpegts_write_end(AVFormatContext *s)
2012 mpegts_write_flush(s);
2017 static void mpegts_deinit(AVFormatContext *s)
2019 MpegTSWrite *ts = s->priv_data;
2020 MpegTSService *service;
2023 for (i = 0; i < s->nb_streams; i++) {
2024 AVStream *st = s->streams[i];
2025 MpegTSWriteStream *ts_st = st->priv_data;
2027 av_freep(&ts_st->dvb_ac3_desc);
2028 av_freep(&ts_st->payload);
2030 avformat_free_context(ts_st->amux);
2036 for (i = 0; i < ts->nb_services; i++) {
2037 service = ts->services[i];
2040 av_freep(&ts->services);
2043 static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
2046 AVStream *st = s->streams[pkt->stream_index];
2048 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2049 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2050 (AV_RB24(pkt->data) != 0x000001 ||
2051 (st->codecpar->extradata_size > 0 &&
2052 st->codecpar->extradata[0] == 1)))
2053 ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL);
2054 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
2055 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
2056 (AV_RB24(pkt->data) != 0x000001 ||
2057 (st->codecpar->extradata_size > 0 &&
2058 st->codecpar->extradata[0] == 1)))
2059 ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL);
2065 #define OFFSET(x) offsetof(MpegTSWrite, x)
2066 #define ENC AV_OPT_FLAG_ENCODING_PARAM
2067 static const AVOption options[] = {
2068 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
2069 OFFSET(transport_stream_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2070 { "mpegts_original_network_id", "Set original_network_id field.",
2071 OFFSET(original_network_id), AV_OPT_TYPE_INT, { .i64 = DVB_PRIVATE_NETWORK_START }, 0x0001, 0xffff, ENC },
2072 { "mpegts_service_id", "Set service_id field.",
2073 OFFSET(service_id), AV_OPT_TYPE_INT, { .i64 = 0x0001 }, 0x0001, 0xffff, ENC },
2074 { "mpegts_service_type", "Set service_type field.",
2075 OFFSET(service_type), AV_OPT_TYPE_INT, { .i64 = 0x01 }, 0x01, 0xff, ENC, "mpegts_service_type" },
2076 { "digital_tv", "Digital Television.",
2077 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2078 { "digital_radio", "Digital Radio.",
2079 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff, ENC, "mpegts_service_type" },
2080 { "teletext", "Teletext.",
2081 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff, ENC, "mpegts_service_type" },
2082 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
2083 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff, ENC, "mpegts_service_type" },
2084 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
2085 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2086 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
2087 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2088 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
2089 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2090 { "hevc_digital_hdtv", "HEVC Digital Television Service.",
2091 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV }, 0x01, 0xff, ENC, "mpegts_service_type" },
2092 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
2093 OFFSET(pmt_start_pid), AV_OPT_TYPE_INT, { .i64 = 0x1000 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2094 { "mpegts_start_pid", "Set the first pid.",
2095 OFFSET(start_pid), AV_OPT_TYPE_INT, { .i64 = 0x0100 }, FIRST_OTHER_PID, LAST_OTHER_PID, ENC },
2096 { "mpegts_m2ts_mode", "Enable m2ts mode.", OFFSET(m2ts_mode), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2097 { "muxrate", NULL, OFFSET(mux_rate), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, ENC },
2098 { "pes_payload_size", "Minimum PES packet payload in bytes",
2099 OFFSET(pes_payload_size), AV_OPT_TYPE_INT, { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, ENC },
2100 { "mpegts_flags", "MPEG-TS muxing flags", OFFSET(flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX, ENC, "mpegts_flags" },
2101 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
2102 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX, ENC, "mpegts_flags" },
2103 { "latm", "Use LATM packetization for AAC",
2104 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX, ENC, "mpegts_flags" },
2105 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
2106 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX, ENC, "mpegts_flags" },
2107 { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
2108 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX, ENC, "mpegts_flags" },
2109 { "initial_discontinuity", "Mark initial packets as discontinuous",
2110 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_DISCONT }, 0, INT_MAX, ENC, "mpegts_flags" },
2111 { "mpegts_copyts", "don't offset dts/pts", OFFSET(copyts), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, ENC },
2112 { "tables_version", "set PAT, PMT and SDT version", OFFSET(tables_version), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 31, ENC },
2113 { "omit_video_pes_length", "Omit the PES packet length for video packets",
2114 OFFSET(omit_video_pes_length), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC },
2115 { "pcr_period", "PCR retransmission time in milliseconds",
2116 OFFSET(pcr_period_ms), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ENC },
2117 { "pat_period", "PAT/PMT retransmission time limit in seconds",
2118 OFFSET(pat_period_us), AV_OPT_TYPE_DURATION, { .i64 = PAT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2119 { "sdt_period", "SDT retransmission time limit in seconds",
2120 OFFSET(sdt_period_us), AV_OPT_TYPE_DURATION, { .i64 = SDT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, ENC },
2124 static const AVClass mpegts_muxer_class = {
2125 .class_name = "MPEGTS muxer",
2126 .item_name = av_default_item_name,
2128 .version = LIBAVUTIL_VERSION_INT,
2131 AVOutputFormat ff_mpegts_muxer = {
2133 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2134 .mime_type = "video/MP2T",
2135 .extensions = "ts,m2t,m2ts,mts",
2136 .priv_data_size = sizeof(MpegTSWrite),
2137 .audio_codec = AV_CODEC_ID_MP2,
2138 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
2139 .init = mpegts_init,
2140 .write_packet = mpegts_write_packet,
2141 .write_trailer = mpegts_write_end,
2142 .deinit = mpegts_deinit,
2143 .check_bitstream = mpegts_check_bitstream,
2144 .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
2145 .priv_class = &mpegts_muxer_class,