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 */
84 int mux_rate; ///< set to 1 when VBR
87 int transport_stream_id;
88 int original_network_id;
101 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
102 #define MPEGTS_FLAG_AAC_LATM 0x02
103 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
104 #define MPEGTS_FLAG_SYSTEM_B 0x08
105 #define MPEGTS_FLAG_DISCONT 0x10
109 int64_t pat_period_us;
110 int64_t sdt_period_us;
114 int omit_video_pes_length;
117 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
118 #define DEFAULT_PES_HEADER_FREQ 16
119 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
121 /* The section length is 12 bits. The first 2 are set to 0, the remaining
122 * 10 bits should not exceed 1021. */
123 #define SECTION_LENGTH 1020
125 /* NOTE: 4 bytes must be left at the end for the crc32 */
126 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
129 unsigned char packet[TS_PACKET_SIZE];
130 const unsigned char *buf_ptr;
132 int first, b, len1, left;
134 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
137 buf[len - 4] = (crc >> 24) & 0xff;
138 buf[len - 3] = (crc >> 16) & 0xff;
139 buf[len - 2] = (crc >> 8) & 0xff;
140 buf[len - 1] = crc & 0xff;
142 /* send each packet */
145 first = buf == buf_ptr;
153 s->cc = s->cc + 1 & 0xf;
155 if (s->discontinuity) {
159 s->discontinuity = 0;
162 *q++ = 0; /* 0 offset */
163 len1 = TS_PACKET_SIZE - (q - packet);
166 memcpy(q, buf_ptr, len1);
168 /* add known padding data */
169 left = TS_PACKET_SIZE - (q - packet);
171 memset(q, 0xff, left);
173 s->write_packet(s, packet);
180 static inline void put16(uint8_t **q_ptr, int val)
189 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
190 int version, int sec_num, int last_sec_num,
191 uint8_t *buf, int len)
193 uint8_t section[1024], *q;
194 unsigned int tot_len;
195 /* reserved_future_use field must be set to 1 for SDT */
196 unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000;
198 tot_len = 3 + 5 + len + 4;
199 /* check if not too big */
201 return AVERROR_INVALIDDATA;
205 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
207 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
212 mpegts_write_section(s, section, tot_len);
216 /*********************************************/
219 #define DEFAULT_PROVIDER_NAME "FFmpeg"
220 #define DEFAULT_SERVICE_NAME "Service"
222 /* we retransmit the SI info at this rate */
223 #define SDT_RETRANS_TIME 500
224 #define PAT_RETRANS_TIME 100
225 #define PCR_RETRANS_TIME 20
227 typedef struct MpegTSWriteStream {
228 int pid; /* stream associated pid */
232 int first_pts_check; ///< first pts check needed
233 int prev_payload_key;
238 AVFormatContext *amux;
241 int64_t pcr_period; /* PCR period in PCR time base */
245 int opus_queued_samples;
246 int opus_pending_trim_start;
249 static void mpegts_write_pat(AVFormatContext *s)
251 MpegTSWrite *ts = s->priv_data;
252 MpegTSService *service;
253 uint8_t data[SECTION_LENGTH], *q;
257 for (i = 0; i < ts->nb_services; i++) {
258 service = ts->services[i];
259 put16(&q, service->sid);
260 put16(&q, 0xe000 | service->pmt.pid);
262 mpegts_write_section1(&ts->pat, PAT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
266 static void putbuf(uint8_t **q_ptr, const uint8_t *buf, size_t len)
268 memcpy(*q_ptr, buf, len);
272 static void put_registration_descriptor(uint8_t **q_ptr, uint32_t tag)
275 *q++ = 0x05; /* MPEG-2 registration descriptor*/
284 static int get_dvb_stream_type(AVFormatContext *s, AVStream *st)
286 MpegTSWrite *ts = s->priv_data;
287 MpegTSWriteStream *ts_st = st->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_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
358 "Stream %d, codec %s, is muxed as a private data stream "
359 "and may not be recognized upon reading.\n", st->index,
360 avcodec_get_name(st->codecpar->codec_id));
361 stream_type = STREAM_TYPE_PRIVATE_DATA;
368 static int get_m2ts_stream_type(AVFormatContext *s, AVStream *st)
371 MpegTSWriteStream *ts_st = st->priv_data;
373 switch (st->codecpar->codec_id) {
374 case AV_CODEC_ID_MPEG2VIDEO:
375 stream_type = STREAM_TYPE_VIDEO_MPEG2;
377 case AV_CODEC_ID_H264:
378 stream_type = STREAM_TYPE_VIDEO_H264;
380 case AV_CODEC_ID_VC1:
381 stream_type = STREAM_TYPE_VIDEO_VC1;
383 case AV_CODEC_ID_HEVC:
384 stream_type = STREAM_TYPE_VIDEO_HEVC;
386 case AV_CODEC_ID_PCM_BLURAY:
389 case AV_CODEC_ID_AC3:
392 case AV_CODEC_ID_DTS:
393 stream_type = (st->codecpar->channels > 6) ? 0x85 : 0x82;
395 case AV_CODEC_ID_TRUEHD:
398 case AV_CODEC_ID_EAC3:
401 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
404 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
408 av_log_once(s, AV_LOG_WARNING, AV_LOG_DEBUG, &ts_st->data_st_warning,
409 "Stream %d, codec %s, is muxed as a private data stream "
410 "and may not be recognized upon reading.\n", st->index,
411 avcodec_get_name(st->codecpar->codec_id));
412 stream_type = STREAM_TYPE_PRIVATE_DATA;
419 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
421 MpegTSWrite *ts = s->priv_data;
422 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
423 int val, stream_type, i, err = 0;
426 put16(&q, 0xe000 | service->pcr_pid);
428 program_info_length_ptr = q;
429 q += 2; /* patched after */
431 /* put program info here */
433 put_registration_descriptor(&q, MKTAG('H', 'D', 'M', 'V'));
434 *q++ = 0x88; // descriptor_tag - hdmv_copy_control_descriptor
435 *q++ = 0x04; // descriptor_length
436 put16(&q, 0x0fff); // CA_System_ID
437 *q++ = 0xfc; // private_data_byte
438 *q++ = 0xfc; // private_data_byte
441 val = 0xf000 | (q - program_info_length_ptr - 2);
442 program_info_length_ptr[0] = val >> 8;
443 program_info_length_ptr[1] = val;
445 for (i = 0; i < s->nb_streams; i++) {
446 AVStream *st = s->streams[i];
447 MpegTSWriteStream *ts_st = st->priv_data;
448 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
450 if (s->nb_programs) {
452 AVProgram *program = service->program;
454 for (k = 0; k < program->nb_stream_indexes; k++)
455 if (program->stream_index[k] == i) {
464 if (q - data > SECTION_LENGTH - 32) {
469 stream_type = ts->m2ts_mode ? get_m2ts_stream_type(s, st) : get_dvb_stream_type(s, st);
472 put16(&q, 0xe000 | ts_st->pid);
474 q += 2; /* patched after */
476 /* write optional descriptors here */
477 switch (st->codecpar->codec_type) {
478 case AVMEDIA_TYPE_AUDIO:
479 if (st->codecpar->codec_id==AV_CODEC_ID_AC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
480 *q++=0x6a; // AC3 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_EAC3 && (ts->flags & MPEGTS_FLAG_SYSTEM_B)) {
485 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
486 *q++=1; // 1 byte, all flags sets to 0
487 *q++=0; // omit all fields...
489 if (st->codecpar->codec_id==AV_CODEC_ID_S302M)
490 put_registration_descriptor(&q, MKTAG('B', 'S', 'S', 'D'));
491 if (st->codecpar->codec_id==AV_CODEC_ID_OPUS) {
492 /* 6 bytes registration descriptor, 4 bytes Opus audio descriptor */
493 if (q - data > SECTION_LENGTH - 6 - 4) {
498 put_registration_descriptor(&q, MKTAG('O', 'p', 'u', 's'));
500 *q++ = 0x7f; /* DVB extension descriptor */
504 if (st->codecpar->extradata && st->codecpar->extradata_size >= 19) {
505 if (st->codecpar->extradata[18] == 0 && st->codecpar->channels <= 2) {
506 /* RTP mapping family */
507 *q++ = st->codecpar->channels;
508 } else if (st->codecpar->extradata[18] == 1 && st->codecpar->channels <= 8 &&
509 st->codecpar->extradata_size >= 21 + st->codecpar->channels) {
510 static const uint8_t coupled_stream_counts[9] = {
511 1, 0, 1, 1, 2, 2, 2, 3, 3
513 static const uint8_t channel_map_a[8][8] = {
520 {0, 4, 1, 2, 3, 5, 6},
521 {0, 6, 1, 2, 3, 4, 5, 7},
523 static const uint8_t channel_map_b[8][8] = {
530 {0, 1, 2, 3, 4, 5, 6},
531 {0, 1, 2, 3, 4, 5, 6, 7},
533 /* Vorbis mapping family */
535 if (st->codecpar->extradata[19] == st->codecpar->channels - coupled_stream_counts[st->codecpar->channels] &&
536 st->codecpar->extradata[20] == coupled_stream_counts[st->codecpar->channels] &&
537 memcmp(&st->codecpar->extradata[21], channel_map_a[st->codecpar->channels-1], st->codecpar->channels) == 0) {
538 *q++ = st->codecpar->channels;
539 } else if (st->codecpar->channels >= 2 && st->codecpar->extradata[19] == st->codecpar->channels &&
540 st->codecpar->extradata[20] == 0 &&
541 memcmp(&st->codecpar->extradata[21], channel_map_b[st->codecpar->channels-1], st->codecpar->channels) == 0) {
542 *q++ = st->codecpar->channels | 0x80;
544 /* Unsupported, could write an extended descriptor here */
545 av_log(s, AV_LOG_ERROR, "Unsupported Opus Vorbis-style channel mapping");
550 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping for family %d", st->codecpar->extradata[18]);
553 } else if (st->codecpar->channels <= 2) {
554 /* Assume RTP mapping family */
555 *q++ = st->codecpar->channels;
558 av_log(s, AV_LOG_ERROR, "Unsupported Opus channel mapping");
565 char *next = lang->value;
568 *q++ = 0x0a; /* ISO 639 language descriptor */
572 for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
573 if (q - data > SECTION_LENGTH - 4) {
577 next = strchr(p, ',');
578 if (strlen(p) != 3 && (!next || next != p + 3))
579 continue; /* not a 3-letter code */
585 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
587 else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
589 else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
592 *q++ = 0; /* undefined type */
598 q -= 2; /* no language codes were written */
601 case AVMEDIA_TYPE_SUBTITLE:
603 const char default_language[] = "und";
604 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
606 if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
608 int extradata_copied = 0;
610 *q++ = 0x59; /* subtitling_descriptor */
613 while (strlen(language) >= 3) {
614 if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
622 if (*language != '\0')
625 if (st->codecpar->extradata_size - extradata_copied >= 5) {
626 *q++ = st->codecpar->extradata[extradata_copied + 4]; /* subtitling_type */
627 memcpy(q, st->codecpar->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
628 extradata_copied += 5;
632 * 0x10 - normal with no monitor aspect ratio criticality
633 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
634 *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
635 if ((st->codecpar->extradata_size == 4) && (extradata_copied == 0)) {
636 /* support of old 4-byte extradata format */
637 memcpy(q, st->codecpar->extradata, 4); /* composition_page_id and ancillary_page_id */
638 extradata_copied += 4;
641 put16(&q, 1); /* composition_page_id */
642 put16(&q, 1); /* ancillary_page_id */
647 *len_ptr = q - len_ptr - 1;
648 } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
649 uint8_t *len_ptr = NULL;
650 int extradata_copied = 0;
652 /* The descriptor tag. teletext_descriptor */
656 while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
661 if (*language != '\0')
664 if (st->codecpar->extradata_size - 1 > extradata_copied) {
665 memcpy(q, st->codecpar->extradata + extradata_copied, 2);
666 extradata_copied += 2;
669 /* The Teletext descriptor:
670 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
671 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
672 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
678 *len_ptr = q - len_ptr - 1;
682 case AVMEDIA_TYPE_VIDEO:
683 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
684 put_registration_descriptor(&q, MKTAG('d', 'r', 'a', 'c'));
685 } else if (stream_type == STREAM_TYPE_VIDEO_VC1) {
686 put_registration_descriptor(&q, MKTAG('V', 'C', '-', '1'));
687 } else if (stream_type == STREAM_TYPE_VIDEO_HEVC && s->strict_std_compliance <= FF_COMPLIANCE_NORMAL) {
688 put_registration_descriptor(&q, MKTAG('H', 'E', 'V', 'C'));
691 case AVMEDIA_TYPE_DATA:
692 if (st->codecpar->codec_id == AV_CODEC_ID_SMPTE_KLV) {
693 put_registration_descriptor(&q, MKTAG('K', 'L', 'V', 'A'));
694 } else if (st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
695 const char *tag = "ID3 ";
696 *q++ = 0x26; /* metadata descriptor */
698 put16(&q, 0xffff); /* metadata application format */
699 putbuf(&q, tag, strlen(tag));
700 *q++ = 0xff; /* metadata format */
701 putbuf(&q, tag, strlen(tag));
702 *q++ = 0; /* metadata service ID */
703 *q++ = 0xF; /* metadata_locator_record_flag|MPEG_carriage_flags|reserved */
708 val = 0xf000 | (q - desc_length_ptr - 2);
709 desc_length_ptr[0] = val >> 8;
710 desc_length_ptr[1] = val;
714 av_log(s, AV_LOG_ERROR,
715 "The PMT section cannot fit stream %d and all following streams.\n"
716 "Try reducing the number of languages in the audio streams "
717 "or the total number of streams.\n", i);
719 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
724 static void mpegts_write_sdt(AVFormatContext *s)
726 MpegTSWrite *ts = s->priv_data;
727 MpegTSService *service;
728 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
729 int i, running_status, free_ca_mode, val;
732 put16(&q, ts->original_network_id);
734 for (i = 0; i < ts->nb_services; i++) {
735 service = ts->services[i];
736 put16(&q, service->sid);
737 *q++ = 0xfc | 0x00; /* currently no EIT info */
738 desc_list_len_ptr = q;
740 running_status = 4; /* running */
743 /* write only one descriptor for the service name and provider */
747 *q++ = ts->service_type;
748 putbuf(&q, service->provider_name, service->provider_name[0] + 1);
749 putbuf(&q, service->name, service->name[0] + 1);
750 desc_len_ptr[0] = q - desc_len_ptr - 1;
752 /* fill descriptor length */
753 val = (running_status << 13) | (free_ca_mode << 12) |
754 (q - desc_list_len_ptr - 2);
755 desc_list_len_ptr[0] = val >> 8;
756 desc_list_len_ptr[1] = val;
758 mpegts_write_section1(&ts->sdt, SDT_TID, ts->transport_stream_id, ts->tables_version, 0, 0,
762 /* This stores a string in buf with the correct encoding and also sets the
763 * first byte as the length. !str is accepted for an empty string.
764 * If the string is already encoded, invalid UTF-8 or has no multibyte sequence
765 * then we keep it as is, otherwise we signal UTF-8 encoding. */
766 static int encode_str8(uint8_t *buf, const char *str)
771 str_len = strlen(str);
772 if (str[0] && (unsigned)str[0] >= 0x20) { /* Make sure the string is not already encoded. */
773 const uint8_t *q = str;
774 int has_multibyte = 0;
777 GET_UTF8(code, *q++, goto invalid;) /* Is it valid UTF-8? */
778 has_multibyte |= (code > 127); /* Does it have multibyte UTF-8 chars in it? */
780 if (has_multibyte) { /* If we have multibyte chars and valid UTF-8, then encode as such! */
782 return AVERROR(EINVAL);
783 buf[0] = str_len + 1;
785 memcpy(&buf[2], str, str_len);
790 /* Otherwise let's just encode the string as is! */
792 return AVERROR(EINVAL);
794 memcpy(&buf[1], str, str_len);
798 static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
800 return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
804 static void write_packet(AVFormatContext *s, const uint8_t *packet)
806 MpegTSWrite *ts = s->priv_data;
808 int64_t pcr = get_pcr(s->priv_data, s->pb);
809 uint32_t tp_extra_header = pcr % 0x3fffffff;
810 tp_extra_header = AV_RB32(&tp_extra_header);
811 avio_write(s->pb, (unsigned char *) &tp_extra_header,
812 sizeof(tp_extra_header));
814 avio_write(s->pb, packet, TS_PACKET_SIZE);
817 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
819 AVFormatContext *ctx = s->opaque;
820 write_packet(ctx, packet);
823 static MpegTSService *mpegts_add_service(AVFormatContext *s, int sid,
824 const AVDictionary *metadata,
827 MpegTSWrite *ts = s->priv_data;
828 MpegTSService *service;
829 AVDictionaryEntry *title, *provider;
830 char default_service_name[32];
831 const char *service_name;
832 const char *provider_name;
834 title = av_dict_get(metadata, "service_name", NULL, 0);
836 title = av_dict_get(metadata, "title", NULL, 0);
837 snprintf(default_service_name, sizeof(default_service_name), "%s%02d", DEFAULT_SERVICE_NAME, ts->nb_services + 1);
838 service_name = title ? title->value : default_service_name;
839 provider = av_dict_get(metadata, "service_provider", NULL, 0);
840 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
842 service = av_mallocz(sizeof(MpegTSService));
845 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
847 service->pcr_pid = 0x1fff;
848 if (encode_str8(service->provider_name, provider_name) < 0 ||
849 encode_str8(service->name, service_name) < 0) {
850 av_log(s, AV_LOG_ERROR, "Too long service or provider name\n");
853 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
856 service->pmt.write_packet = section_write_packet;
857 service->pmt.opaque = s;
858 service->pmt.cc = 15;
859 service->pmt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
860 service->program = program;
868 static void enable_pcr_generation_for_stream(AVFormatContext *s, AVStream *pcr_st)
870 MpegTSWrite *ts = s->priv_data;
871 MpegTSWriteStream *ts_st = pcr_st->priv_data;
873 if (ts->mux_rate > 1 || ts->pcr_period_ms >= 0) {
874 int pcr_period_ms = ts->pcr_period_ms == -1 ? PCR_RETRANS_TIME : ts->pcr_period_ms;
875 ts_st->pcr_period = av_rescale(pcr_period_ms, PCR_TIME_BASE, 1000);
877 /* By default, for VBR we select the highest multiple of frame duration which is less than 100 ms. */
878 int64_t frame_period = 0;
879 if (pcr_st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
880 int frame_size = av_get_audio_frame_duration2(pcr_st->codecpar, 0);
882 av_log(s, AV_LOG_WARNING, "frame size not set\n");
885 frame_period = av_rescale_rnd(frame_size, PCR_TIME_BASE, pcr_st->codecpar->sample_rate, AV_ROUND_UP);
886 } else if (pcr_st->avg_frame_rate.num) {
887 frame_period = av_rescale_rnd(pcr_st->avg_frame_rate.den, PCR_TIME_BASE, pcr_st->avg_frame_rate.num, AV_ROUND_UP);
889 if (frame_period > 0 && frame_period <= PCR_TIME_BASE / 10)
890 ts_st->pcr_period = frame_period * (PCR_TIME_BASE / 10 / frame_period);
892 ts_st->pcr_period = 1;
895 // output a PCR as soon as possible
896 ts_st->last_pcr = ts->first_pcr - ts_st->pcr_period;
899 static void select_pcr_streams(AVFormatContext *s)
901 MpegTSWrite *ts = s->priv_data;
903 for (int i = 0; i < ts->nb_services; i++) {
904 MpegTSService *service = ts->services[i];
905 AVStream *pcr_st = NULL;
906 AVProgram *program = service->program;
907 int nb_streams = program ? program->nb_stream_indexes : s->nb_streams;
909 for (int j = 0; j < nb_streams; j++) {
910 AVStream *st = s->streams[program ? program->stream_index[j] : j];
912 pcr_st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
919 MpegTSWriteStream *ts_st = pcr_st->priv_data;
920 service->pcr_pid = ts_st->pid;
921 enable_pcr_generation_for_stream(s, pcr_st);
922 av_log(s, AV_LOG_VERBOSE, "service %i using PCR in pid=%i, pcr_period=%"PRId64"ms\n",
923 service->sid, service->pcr_pid, av_rescale(ts_st->pcr_period, 1000, PCR_TIME_BASE));
928 static int mpegts_init(AVFormatContext *s)
930 MpegTSWrite *ts = s->priv_data;
934 if (ts->m2ts_mode == -1) {
935 if (av_match_ext(s->url, "m2ts")) {
942 ts->m2ts_video_pid = M2TS_VIDEO_PID;
943 ts->m2ts_audio_pid = M2TS_AUDIO_START_PID;
944 ts->m2ts_pgssub_pid = M2TS_PGSSUB_START_PID;
945 ts->m2ts_textsub_pid = M2TS_TEXTSUB_PID;
948 ts->pmt_start_pid = M2TS_PMT_PID;
949 if (s->nb_programs > 1) {
950 av_log(s, AV_LOG_ERROR, "Only one program is allowed in m2ts mode!\n");
951 return AVERROR(EINVAL);
955 if (s->max_delay < 0) /* Not set by the caller */
958 // round up to a whole number of TS packets
959 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
961 if (!s->nb_programs) {
962 /* allocate a single DVB service */
963 if (!mpegts_add_service(s, ts->service_id, s->metadata, NULL))
964 return AVERROR(ENOMEM);
966 for (i = 0; i < s->nb_programs; i++) {
967 AVProgram *program = s->programs[i];
968 if (!mpegts_add_service(s, program->id, program->metadata, program))
969 return AVERROR(ENOMEM);
973 ts->pat.pid = PAT_PID;
974 /* Initialize at 15 so that it wraps and is equal to 0 for the
975 * first packet we write. */
977 ts->pat.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
978 ts->pat.write_packet = section_write_packet;
981 ts->sdt.pid = SDT_PID;
983 ts->sdt.discontinuity= ts->flags & MPEGTS_FLAG_DISCONT;
984 ts->sdt.write_packet = section_write_packet;
987 /* assign pids to each stream */
988 for (i = 0; i < s->nb_streams; i++) {
989 AVStream *st = s->streams[i];
990 MpegTSWriteStream *ts_st;
992 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
994 return AVERROR(ENOMEM);
996 st->priv_data = ts_st;
998 avpriv_set_pts_info(st, 33, 1, 90000);
1000 ts_st->payload = av_mallocz(ts->pes_payload_size);
1001 if (!ts_st->payload) {
1002 return AVERROR(ENOMEM);
1005 /* MPEG pid values < 16 are reserved. Applications which set st->id in
1006 * this range are assigned a calculated pid. */
1008 if (ts->m2ts_mode) {
1009 switch (st->codecpar->codec_type) {
1010 case AVMEDIA_TYPE_VIDEO:
1011 ts_st->pid = ts->m2ts_video_pid++;
1013 case AVMEDIA_TYPE_AUDIO:
1014 ts_st->pid = ts->m2ts_audio_pid++;
1016 case AVMEDIA_TYPE_SUBTITLE:
1017 switch (st->codecpar->codec_id) {
1018 case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
1019 ts_st->pid = ts->m2ts_pgssub_pid++;
1021 case AV_CODEC_ID_HDMV_TEXT_SUBTITLE:
1022 ts_st->pid = ts->m2ts_textsub_pid++;
1027 if (ts->m2ts_video_pid > M2TS_VIDEO_PID + 1 ||
1028 ts->m2ts_audio_pid > M2TS_AUDIO_START_PID + 32 ||
1029 ts->m2ts_pgssub_pid > M2TS_PGSSUB_START_PID + 32 ||
1030 ts->m2ts_textsub_pid > M2TS_TEXTSUB_PID + 1 ||
1032 av_log(s, AV_LOG_ERROR, "Cannot automatically assign PID for stream %d\n", st->index);
1033 return AVERROR(EINVAL);
1036 ts_st->pid = ts->start_pid + i;
1039 ts_st->pid = st->id;
1041 if (ts_st->pid >= 0x1FFF) {
1042 av_log(s, AV_LOG_ERROR,
1043 "Invalid stream id %d, must be less than 8191\n", st->id);
1044 return AVERROR(EINVAL);
1046 for (j = 0; j < ts->nb_services; j++) {
1047 if (ts->services[j]->pmt.pid > LAST_OTHER_PID) {
1048 av_log(s, AV_LOG_ERROR,
1049 "Invalid PMT PID %d, must be less than %d\n", ts->services[j]->pmt.pid, LAST_OTHER_PID + 1);
1050 return AVERROR(EINVAL);
1052 if (ts_st->pid == ts->services[j]->pmt.pid) {
1053 av_log(s, AV_LOG_ERROR, "PID %d cannot be both elementary and PMT PID\n", ts_st->pid);
1054 return AVERROR(EINVAL);
1057 for (j = 0; j < i; j++) {
1058 MpegTSWriteStream *ts_st_prev = s->streams[j]->priv_data;
1059 if (ts_st_prev->pid == ts_st->pid) {
1060 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
1061 return AVERROR(EINVAL);
1064 ts_st->payload_pts = AV_NOPTS_VALUE;
1065 ts_st->payload_dts = AV_NOPTS_VALUE;
1066 ts_st->first_pts_check = 1;
1068 ts_st->discontinuity = ts->flags & MPEGTS_FLAG_DISCONT;
1069 if (st->codecpar->codec_id == AV_CODEC_ID_AAC &&
1070 st->codecpar->extradata_size > 0) {
1072 ts_st->amux = avformat_alloc_context();
1074 return AVERROR(ENOMEM);
1076 ts_st->amux->oformat =
1077 av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
1079 if (!ts_st->amux->oformat) {
1080 return AVERROR(EINVAL);
1082 if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
1083 return AVERROR(ENOMEM);
1085 ret = avcodec_parameters_copy(ast->codecpar, st->codecpar);
1088 ast->time_base = st->time_base;
1089 ret = avformat_write_header(ts_st->amux, NULL);
1093 if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1094 ts_st->opus_pending_trim_start = st->codecpar->initial_padding * 48000 / st->codecpar->sample_rate;
1099 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
1101 select_pcr_streams(s);
1103 ts->last_pat_ts = AV_NOPTS_VALUE;
1104 ts->last_sdt_ts = AV_NOPTS_VALUE;
1105 ts->pat_period = av_rescale(ts->pat_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1106 ts->sdt_period = av_rescale(ts->sdt_period_us, PCR_TIME_BASE, AV_TIME_BASE);
1108 if (ts->mux_rate == 1)
1109 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
1111 av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
1112 av_log(s, AV_LOG_VERBOSE,
1113 "sdt every %"PRId64" ms, pat/pmt every %"PRId64" ms\n",
1114 av_rescale(ts->sdt_period, 1000, PCR_TIME_BASE),
1115 av_rescale(ts->pat_period, 1000, PCR_TIME_BASE));
1120 /* send SDT, PAT and PMT tables regularly */
1121 static void retransmit_si_info(AVFormatContext *s, int force_pat, int force_sdt, int64_t pcr)
1123 MpegTSWrite *ts = s->priv_data;
1126 if ((pcr != AV_NOPTS_VALUE && ts->last_sdt_ts == AV_NOPTS_VALUE) ||
1127 (pcr != AV_NOPTS_VALUE && pcr - ts->last_sdt_ts >= ts->sdt_period) ||
1130 if (pcr != AV_NOPTS_VALUE)
1131 ts->last_sdt_ts = FFMAX(pcr, ts->last_sdt_ts);
1132 mpegts_write_sdt(s);
1134 if ((pcr != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
1135 (pcr != AV_NOPTS_VALUE && pcr - ts->last_pat_ts >= ts->pat_period) ||
1137 if (pcr != AV_NOPTS_VALUE)
1138 ts->last_pat_ts = FFMAX(pcr, ts->last_pat_ts);
1139 mpegts_write_pat(s);
1140 for (i = 0; i < ts->nb_services; i++)
1141 mpegts_write_pmt(s, ts->services[i]);
1145 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
1147 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
1149 *buf++ = pcr_high >> 25;
1150 *buf++ = pcr_high >> 17;
1151 *buf++ = pcr_high >> 9;
1152 *buf++ = pcr_high >> 1;
1153 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
1159 /* Write a single null transport stream packet */
1160 static void mpegts_insert_null_packet(AVFormatContext *s)
1163 uint8_t buf[TS_PACKET_SIZE];
1170 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
1171 write_packet(s, buf);
1174 /* Write a single transport stream packet with a PCR and no payload */
1175 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
1177 MpegTSWrite *ts = s->priv_data;
1178 MpegTSWriteStream *ts_st = st->priv_data;
1180 uint8_t buf[TS_PACKET_SIZE];
1184 *q++ = ts_st->pid >> 8;
1186 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
1187 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
1188 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
1189 *q++ = 0x10; /* Adaptation flags: PCR present */
1190 if (ts_st->discontinuity) {
1192 ts_st->discontinuity = 0;
1195 /* PCR coded into 6 bytes */
1196 q += write_pcr_bits(q, get_pcr(ts, s->pb));
1198 /* stuffing bytes */
1199 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
1200 write_packet(s, buf);
1203 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
1207 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
1209 val = (((pts >> 15) & 0x7fff) << 1) | 1;
1212 val = (((pts) & 0x7fff) << 1) | 1;
1217 /* Set an adaptation field flag in an MPEG-TS packet*/
1218 static void set_af_flag(uint8_t *pkt, int flag)
1220 // expect at least one flag to set
1223 if ((pkt[3] & 0x20) == 0) {
1224 // no AF yet, set adaptation field flag
1226 // 1 byte length, no flags
1233 /* Extend the adaptation field by size bytes */
1234 static void extend_af(uint8_t *pkt, int size)
1236 // expect already existing adaptation field
1237 av_assert0(pkt[3] & 0x20);
1241 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
1242 static uint8_t *get_ts_payload_start(uint8_t *pkt)
1245 return pkt + 5 + pkt[4];
1250 /* Add a PES header to the front of the payload, and segment into an integer
1251 * number of TS packets. The final TS packet is padded using an oversized
1252 * adaptation header to exactly fill the last TS packet.
1253 * NOTE: 'payload' contains a complete PES payload. */
1254 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
1255 const uint8_t *payload, int payload_size,
1256 int64_t pts, int64_t dts, int key, int stream_id)
1258 MpegTSWriteStream *ts_st = st->priv_data;
1259 MpegTSWrite *ts = s->priv_data;
1260 uint8_t buf[TS_PACKET_SIZE];
1262 int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
1263 int afc_len, stuffing_len;
1264 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
1265 int force_pat = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
1268 av_assert0(ts_st->payload != buf || st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO);
1269 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1273 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1276 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1280 while (payload_size > 0) {
1281 int64_t pcr = AV_NOPTS_VALUE;
1282 if (ts->mux_rate > 1)
1283 pcr = get_pcr(ts, s->pb);
1284 else if (dts != AV_NOPTS_VALUE)
1285 pcr = (dts - delay) * 300;
1287 retransmit_si_info(s, force_pat, force_sdt, pcr);
1292 if (ts->mux_rate > 1) {
1293 /* Send PCR packets for all PCR streams if needed */
1294 pcr = get_pcr(ts, s->pb);
1295 if (pcr >= ts->next_pcr) {
1296 int64_t next_pcr = INT64_MAX;
1297 for (int i = 0; i < s->nb_streams; i++) {
1298 /* Make the current stream the last, because for that we
1299 * can insert the pcr into the payload later */
1300 int st2_index = i < st->index ? i : (i + 1 == s->nb_streams ? st->index : i + 1);
1301 AVStream *st2 = s->streams[st2_index];
1302 MpegTSWriteStream *ts_st2 = st2->priv_data;
1303 if (ts_st2->pcr_period) {
1304 if (pcr - ts_st2->last_pcr >= ts_st2->pcr_period) {
1305 ts_st2->last_pcr = FFMAX(pcr - ts_st2->pcr_period, ts_st2->last_pcr + ts_st2->pcr_period);
1307 mpegts_insert_pcr_only(s, st2);
1308 pcr = get_pcr(ts, s->pb);
1313 next_pcr = FFMIN(next_pcr, ts_st2->last_pcr + ts_st2->pcr_period);
1316 ts->next_pcr = next_pcr;
1318 if (dts != AV_NOPTS_VALUE && (dts - pcr / 300) > delay) {
1319 /* pcr insert gets priority over null packet insert */
1321 mpegts_insert_pcr_only(s, st);
1323 mpegts_insert_null_packet(s);
1324 /* recalculate write_pcr and possibly retransmit si_info */
1327 } else if (ts_st->pcr_period && pcr != AV_NOPTS_VALUE) {
1328 if (pcr - ts_st->last_pcr >= ts_st->pcr_period && is_start) {
1329 ts_st->last_pcr = FFMAX(pcr - ts_st->pcr_period, ts_st->last_pcr + ts_st->pcr_period);
1334 /* prepare packet header */
1337 val = ts_st->pid >> 8;
1338 if (ts->m2ts_mode && st->codecpar->codec_id == AV_CODEC_ID_AC3)
1344 ts_st->cc = ts_st->cc + 1 & 0xf;
1345 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1346 if (ts_st->discontinuity) {
1347 set_af_flag(buf, 0x80);
1348 q = get_ts_payload_start(buf);
1349 ts_st->discontinuity = 0;
1351 if (key && is_start && pts != AV_NOPTS_VALUE) {
1352 // set Random Access for key frames
1353 if (ts_st->pcr_period)
1355 set_af_flag(buf, 0x40);
1356 q = get_ts_payload_start(buf);
1359 set_af_flag(buf, 0x10);
1360 q = get_ts_payload_start(buf);
1361 // add 11, pcr references the last byte of program clock reference base
1362 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1363 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1364 extend_af(buf, write_pcr_bits(q, pcr));
1365 q = get_ts_payload_start(buf);
1368 int pes_extension = 0;
1369 int pes_header_stuffing_bytes = 0;
1370 /* write PES header */
1374 is_dvb_subtitle = 0;
1375 is_dvb_teletext = 0;
1376 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1377 if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC)
1381 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1382 (st->codecpar->codec_id == AV_CODEC_ID_MP2 ||
1383 st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
1384 st->codecpar->codec_id == AV_CODEC_ID_AAC)) {
1386 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1387 st->codecpar->codec_id == AV_CODEC_ID_AC3 &&
1390 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
1391 st->codecpar->codec_id == AV_CODEC_ID_TIMED_ID3) {
1393 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
1394 *q++ = stream_id != -1 ? stream_id : 0xfc;
1396 if (stream_id == 0xbd) /* asynchronous KLV */
1397 pts = dts = AV_NOPTS_VALUE;
1400 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1401 if (st->codecpar->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1402 is_dvb_subtitle = 1;
1403 } else if (st->codecpar->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1404 is_dvb_teletext = 1;
1410 if (pts != AV_NOPTS_VALUE) {
1414 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1418 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1419 st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1420 /* set PES_extension_flag */
1424 /* One byte for PES2 extension flag +
1425 * one byte for extension length +
1426 * one byte for extension id */
1429 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1430 * otherwise it will not play sound on blu-ray
1432 if (ts->m2ts_mode &&
1433 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1434 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1435 /* set PES_extension_flag */
1440 if (is_dvb_teletext) {
1441 pes_header_stuffing_bytes = 0x24 - header_len;
1444 len = payload_size + header_len + 3;
1445 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1446 if (is_dvb_subtitle) {
1452 if (ts->omit_video_pes_length && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1458 /* data alignment indicator is required for subtitle and data streams */
1459 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
1464 if (pts != AV_NOPTS_VALUE) {
1465 write_pts(q, flags >> 6, pts);
1468 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1469 write_pts(q, 1, dts);
1472 if (pes_extension && st->codecpar->codec_id == AV_CODEC_ID_DIRAC) {
1473 flags = 0x01; /* set PES_extension_flag_2 */
1475 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1476 /* Set the stream ID extension flag bit to 0 and
1477 * write the extended stream ID. */
1480 /* For Blu-ray AC3 Audio Setting extended flags */
1481 if (ts->m2ts_mode &&
1483 st->codecpar->codec_id == AV_CODEC_ID_AC3) {
1484 flags = 0x01; /* set PES_extension_flag_2 */
1486 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1487 *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1491 if (is_dvb_subtitle) {
1492 /* First two fields of DVB subtitles PES data:
1493 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1494 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1498 if (is_dvb_teletext) {
1499 memset(q, 0xff, pes_header_stuffing_bytes);
1500 q += pes_header_stuffing_bytes;
1505 header_len = q - buf;
1507 len = TS_PACKET_SIZE - header_len;
1508 if (len > payload_size)
1510 stuffing_len = TS_PACKET_SIZE - header_len - len;
1511 if (stuffing_len > 0) {
1512 /* add stuffing with AFC */
1513 if (buf[3] & 0x20) {
1514 /* stuffing already present: increase its size */
1515 afc_len = buf[4] + 1;
1516 memmove(buf + 4 + afc_len + stuffing_len,
1518 header_len - (4 + afc_len));
1519 buf[4] += stuffing_len;
1520 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1523 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1525 buf[4] = stuffing_len - 1;
1526 if (stuffing_len >= 2) {
1528 memset(buf + 6, 0xff, stuffing_len - 2);
1533 if (is_dvb_subtitle && payload_size == len) {
1534 memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1535 buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1537 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1541 payload_size -= len;
1542 write_packet(s, buf);
1544 ts_st->prev_payload_key = key;
1547 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1549 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1550 if (!st->nb_frames) {
1551 av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
1552 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1553 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1554 return AVERROR_INVALIDDATA;
1556 av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1558 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1559 av_log(s, AV_LOG_WARNING, "\n");
1564 static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1566 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1567 if (!st->nb_frames) {
1568 av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1569 return AVERROR_PATCHWELCOME;
1571 av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1573 av_log(s, AV_LOG_WARNING, " data %08"PRIX32, AV_RB32(pkt->data));
1574 av_log(s, AV_LOG_WARNING, "\n");
1579 /* Based on GStreamer's gst-plugins-base/ext/ogg/gstoggstream.c
1580 * Released under the LGPL v2.1+, written by
1581 * Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
1583 static int opus_get_packet_samples(AVFormatContext *s, AVPacket *pkt)
1585 static const int durations[32] = {
1586 480, 960, 1920, 2880, /* Silk NB */
1587 480, 960, 1920, 2880, /* Silk MB */
1588 480, 960, 1920, 2880, /* Silk WB */
1589 480, 960, /* Hybrid SWB */
1590 480, 960, /* Hybrid FB */
1591 120, 240, 480, 960, /* CELT NB */
1592 120, 240, 480, 960, /* CELT NB */
1593 120, 240, 480, 960, /* CELT NB */
1594 120, 240, 480, 960, /* CELT NB */
1596 int toc, frame_duration, nframes, duration;
1603 frame_duration = durations[toc >> 3];
1617 nframes = pkt->data[1] & 63;
1621 duration = nframes * frame_duration;
1622 if (duration > 5760) {
1623 av_log(s, AV_LOG_WARNING,
1624 "Opus packet duration > 120 ms, invalid");
1631 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1633 AVStream *st = s->streams[pkt->stream_index];
1634 int size = pkt->size;
1635 uint8_t *buf = pkt->data;
1636 uint8_t *data = NULL;
1637 MpegTSWrite *ts = s->priv_data;
1638 MpegTSWriteStream *ts_st = st->priv_data;
1639 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1640 const int64_t max_audio_delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) / 2;
1641 int64_t dts = pkt->dts, pts = pkt->pts;
1642 int opus_samples = 0;
1644 uint8_t *side_data = NULL;
1647 side_data = av_packet_get_side_data(pkt,
1648 AV_PKT_DATA_MPEGTS_STREAM_ID,
1651 stream_id = side_data[0];
1653 if (ts->copyts < 1) {
1654 if (pts != AV_NOPTS_VALUE)
1656 if (dts != AV_NOPTS_VALUE)
1660 if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) {
1661 av_log(s, AV_LOG_ERROR, "first pts value must be set\n");
1662 return AVERROR_INVALIDDATA;
1664 ts_st->first_pts_check = 0;
1666 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1667 const uint8_t *p = buf, *buf_end = p + size;
1668 uint32_t state = -1;
1669 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1670 int ret = ff_check_h264_startcode(s, st, pkt);
1674 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1678 p = avpriv_find_start_code(p, buf_end, &state);
1679 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", state & 0x1f);
1680 if ((state & 0x1f) == 7)
1682 } while (p < buf_end && (state & 0x1f) != 9 &&
1683 (state & 0x1f) != 5 && (state & 0x1f) != 1);
1685 if ((state & 0x1f) != 5)
1687 if ((state & 0x1f) != 9) { // AUD NAL
1688 data = av_malloc(pkt->size + 6 + extradd);
1690 return AVERROR(ENOMEM);
1691 memcpy(data + 6, st->codecpar->extradata, extradd);
1692 memcpy(data + 6 + extradd, pkt->data, pkt->size);
1693 AV_WB32(data, 0x00000001);
1695 data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1697 size = pkt->size + 6 + extradd;
1699 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
1700 if (pkt->size < 2) {
1701 av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1702 return AVERROR_INVALIDDATA;
1704 if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1709 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1710 "and extradata missing\n");
1712 av_init_packet(&pkt2);
1713 pkt2.data = pkt->data;
1714 pkt2.size = pkt->size;
1715 av_assert0(pkt->dts != AV_NOPTS_VALUE);
1716 pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1718 ret = avio_open_dyn_buf(&ts_st->amux->pb);
1722 ret = av_write_frame(ts_st->amux, &pkt2);
1724 ffio_free_dyn_buf(&ts_st->amux->pb);
1727 size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1728 ts_st->amux->pb = NULL;
1732 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1733 const uint8_t *p = buf, *buf_end = p + size;
1734 uint32_t state = -1;
1735 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codecpar->extradata_size : 0;
1736 int ret = check_hevc_startcode(s, st, pkt);
1740 if (extradd && AV_RB24(st->codecpar->extradata) > 1)
1744 p = avpriv_find_start_code(p, buf_end, &state);
1745 av_log(s, AV_LOG_TRACE, "nal %"PRId32"\n", (state & 0x7e)>>1);
1746 if ((state & 0x7e) == 2*32)
1748 } while (p < buf_end && (state & 0x7e) != 2*35 &&
1749 (state & 0x7e) >= 2*32);
1751 if ((state & 0x7e) < 2*16 || (state & 0x7e) >= 2*24)
1753 if ((state & 0x7e) != 2*35) { // AUD NAL
1754 data = av_malloc(pkt->size + 7 + extradd);
1756 return AVERROR(ENOMEM);
1757 memcpy(data + 7, st->codecpar->extradata, extradd);
1758 memcpy(data + 7 + extradd, pkt->data, pkt->size);
1759 AV_WB32(data, 0x00000001);
1762 data[6] = 0x50; // any slice type (0x4) + rbsp stop one bit
1764 size = pkt->size + 7 + extradd;
1766 } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
1767 if (pkt->size < 2) {
1768 av_log(s, AV_LOG_ERROR, "Opus packet too short\n");
1769 return AVERROR_INVALIDDATA;
1772 /* Add Opus control header */
1773 if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
1777 int ctrl_header_size;
1778 int trim_start = 0, trim_end = 0;
1780 opus_samples = opus_get_packet_samples(s, pkt);
1782 side_data = av_packet_get_side_data(pkt,
1783 AV_PKT_DATA_SKIP_SAMPLES,
1786 if (side_data && side_data_size >= 10) {
1787 trim_end = AV_RL32(side_data + 4) * 48000 / st->codecpar->sample_rate;
1790 ctrl_header_size = pkt->size + 2 + pkt->size / 255 + 1;
1791 if (ts_st->opus_pending_trim_start)
1792 ctrl_header_size += 2;
1794 ctrl_header_size += 2;
1796 data = av_malloc(ctrl_header_size);
1798 return AVERROR(ENOMEM);
1802 if (ts_st->opus_pending_trim_start)
1810 data[i] = FFMIN(n, 255);
1815 av_assert0(2 + pkt->size / 255 + 1 == i);
1817 if (ts_st->opus_pending_trim_start) {
1818 trim_start = FFMIN(ts_st->opus_pending_trim_start, opus_samples);
1819 AV_WB16(data + i, trim_start);
1821 ts_st->opus_pending_trim_start -= trim_start;
1824 trim_end = FFMIN(trim_end, opus_samples - trim_start);
1825 AV_WB16(data + i, trim_end);
1829 memcpy(data + i, pkt->data, pkt->size);
1831 size = ctrl_header_size;
1833 /* TODO: Can we get TS formatted data here? If so we will
1834 * need to count the samples of that too! */
1835 av_log(s, AV_LOG_WARNING, "Got MPEG-TS formatted Opus data, unhandled");
1839 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1840 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1841 dts - ts_st->payload_dts >= max_audio_delay) ||
1842 ts_st->opus_queued_samples + opus_samples >= 5760 /* 120ms */)) {
1843 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1844 ts_st->payload_pts, ts_st->payload_dts,
1845 ts_st->payload_flags & AV_PKT_FLAG_KEY, stream_id);
1846 ts_st->payload_size = 0;
1847 ts_st->opus_queued_samples = 0;
1850 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
1851 av_assert0(!ts_st->payload_size);
1852 // for video and subtitle, write a single pes packet
1853 mpegts_write_pes(s, st, buf, size, pts, dts,
1854 pkt->flags & AV_PKT_FLAG_KEY, stream_id);
1855 ts_st->opus_queued_samples = 0;
1860 if (!ts_st->payload_size) {
1861 ts_st->payload_pts = pts;
1862 ts_st->payload_dts = dts;
1863 ts_st->payload_flags = pkt->flags;
1866 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1867 ts_st->payload_size += size;
1868 ts_st->opus_queued_samples += opus_samples;
1875 static void mpegts_write_flush(AVFormatContext *s)
1877 MpegTSWrite *ts = s->priv_data;
1880 /* flush current packets */
1881 for (i = 0; i < s->nb_streams; i++) {
1882 AVStream *st = s->streams[i];
1883 MpegTSWriteStream *ts_st = st->priv_data;
1884 if (ts_st->payload_size > 0) {
1885 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1886 ts_st->payload_pts, ts_st->payload_dts,
1887 ts_st->payload_flags & AV_PKT_FLAG_KEY, -1);
1888 ts_st->payload_size = 0;
1889 ts_st->opus_queued_samples = 0;
1893 if (ts->m2ts_mode) {
1894 int packets = (avio_tell(s->pb) / (TS_PACKET_SIZE + 4)) % 32;
1895 while (packets++ < 32)
1896 mpegts_insert_null_packet(s);
1900 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
1903 mpegts_write_flush(s);
1906 return mpegts_write_packet_internal(s, pkt);
1910 static int mpegts_write_end(AVFormatContext *s)
1913 mpegts_write_flush(s);
1918 static void mpegts_deinit(AVFormatContext *s)
1920 MpegTSWrite *ts = s->priv_data;
1921 MpegTSService *service;
1924 for (i = 0; i < s->nb_streams; i++) {
1925 AVStream *st = s->streams[i];
1926 MpegTSWriteStream *ts_st = st->priv_data;
1928 av_freep(&ts_st->payload);
1930 avformat_free_context(ts_st->amux);
1936 for (i = 0; i < ts->nb_services; i++) {
1937 service = ts->services[i];
1940 av_freep(&ts->services);
1943 static int mpegts_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
1946 AVStream *st = s->streams[pkt->stream_index];
1948 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1949 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
1950 (AV_RB24(pkt->data) != 0x000001 ||
1951 (st->codecpar->extradata_size > 0 &&
1952 st->codecpar->extradata[0] == 1)))
1953 ret = ff_stream_add_bitstream_filter(st, "h264_mp4toannexb", NULL);
1954 } else if (st->codecpar->codec_id == AV_CODEC_ID_HEVC) {
1955 if (pkt->size >= 5 && AV_RB32(pkt->data) != 0x0000001 &&
1956 (AV_RB24(pkt->data) != 0x000001 ||
1957 (st->codecpar->extradata_size > 0 &&
1958 st->codecpar->extradata[0] == 1)))
1959 ret = ff_stream_add_bitstream_filter(st, "hevc_mp4toannexb", NULL);
1965 static const AVOption options[] = {
1966 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
1967 offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT,
1968 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1969 { "mpegts_original_network_id", "Set original_network_id field.",
1970 offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT,
1971 { .i64 = DVB_PRIVATE_NETWORK_START }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1972 { "mpegts_service_id", "Set service_id field.",
1973 offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT,
1974 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1975 { "mpegts_service_type", "Set service_type field.",
1976 offsetof(MpegTSWrite, service_type), AV_OPT_TYPE_INT,
1977 { .i64 = 0x01 }, 0x01, 0xff, AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1978 { "digital_tv", "Digital Television.",
1979 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff,
1980 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1981 { "digital_radio", "Digital Radio.",
1982 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff,
1983 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1984 { "teletext", "Teletext.",
1985 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff,
1986 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1987 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
1988 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff,
1989 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1990 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
1991 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff,
1992 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1993 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
1994 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff,
1995 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1996 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
1997 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff,
1998 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1999 { "hevc_digital_hdtv", "HEVC Digital Television Service.",
2000 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_HEVC_DIGITAL_HDTV }, 0x01, 0xff,
2001 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
2002 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
2003 offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT,
2004 { .i64 = 0x1000 }, FIRST_OTHER_PID, LAST_OTHER_PID, AV_OPT_FLAG_ENCODING_PARAM },
2005 { "mpegts_start_pid", "Set the first pid.",
2006 offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT,
2007 { .i64 = 0x0100 }, FIRST_OTHER_PID, LAST_OTHER_PID, AV_OPT_FLAG_ENCODING_PARAM },
2008 { "mpegts_m2ts_mode", "Enable m2ts mode.",
2009 offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_BOOL,
2010 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
2012 offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT,
2013 { .i64 = 1 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2014 { "pes_payload_size", "Minimum PES packet payload in bytes",
2015 offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT,
2016 { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2017 { "mpegts_flags", "MPEG-TS muxing flags",
2018 offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX,
2019 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2020 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
2021 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX,
2022 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2023 { "latm", "Use LATM packetization for AAC",
2024 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX,
2025 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2026 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
2027 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX,
2028 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2029 { "system_b", "Conform to System B (DVB) instead of System A (ATSC)",
2030 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_SYSTEM_B }, 0, INT_MAX,
2031 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2032 { "initial_discontinuity", "Mark initial packets as discontinuous",
2033 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_DISCONT }, 0, INT_MAX,
2034 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
2035 { "mpegts_copyts", "don't offset dts/pts",
2036 offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_BOOL,
2037 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
2038 { "tables_version", "set PAT, PMT and SDT version",
2039 offsetof(MpegTSWrite, tables_version), AV_OPT_TYPE_INT,
2040 { .i64 = 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM },
2041 { "omit_video_pes_length", "Omit the PES packet length for video packets",
2042 offsetof(MpegTSWrite, omit_video_pes_length), AV_OPT_TYPE_BOOL,
2043 { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
2044 { "pcr_period", "PCR retransmission time in milliseconds",
2045 offsetof(MpegTSWrite, pcr_period_ms), AV_OPT_TYPE_INT,
2046 { .i64 = -1 }, -1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2047 { "pat_period", "PAT/PMT retransmission time limit in seconds",
2048 offsetof(MpegTSWrite, pat_period_us), AV_OPT_TYPE_DURATION,
2049 { .i64 = PAT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2050 { "sdt_period", "SDT retransmission time limit in seconds",
2051 offsetof(MpegTSWrite, sdt_period_us), AV_OPT_TYPE_DURATION,
2052 { .i64 = SDT_RETRANS_TIME * 1000LL }, 0, INT64_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2056 static const AVClass mpegts_muxer_class = {
2057 .class_name = "MPEGTS muxer",
2058 .item_name = av_default_item_name,
2060 .version = LIBAVUTIL_VERSION_INT,
2063 AVOutputFormat ff_mpegts_muxer = {
2065 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
2066 .mime_type = "video/MP2T",
2067 .extensions = "ts,m2t,m2ts,mts",
2068 .priv_data_size = sizeof(MpegTSWrite),
2069 .audio_codec = AV_CODEC_ID_MP2,
2070 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
2071 .init = mpegts_init,
2072 .write_packet = mpegts_write_packet,
2073 .write_trailer = mpegts_write_end,
2074 .deinit = mpegts_deinit,
2075 .check_bitstream = mpegts_check_bitstream,
2076 .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS | AVFMT_NODIMENSIONS,
2077 .priv_class = &mpegts_muxer_class,