2 * MPEG2 transport stream (aka DVB) muxer
3 * Copyright (c) 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/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 /*********************************************/
42 /* mpegts section writer */
44 typedef struct MpegTSSection {
47 void (*write_packet)(struct MpegTSSection *s, const uint8_t *packet);
51 typedef struct MpegTSService {
52 MpegTSSection pmt; /* MPEG2 pmt table context */
53 int sid; /* service ID */
58 int pcr_packet_period;
61 // service_type values as defined in ETSI 300 468
63 MPEGTS_SERVICE_TYPE_DIGITAL_TV = 0x01,
64 MPEGTS_SERVICE_TYPE_DIGITAL_RADIO = 0x02,
65 MPEGTS_SERVICE_TYPE_TELETEXT = 0x03,
66 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO = 0x0A,
67 MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV = 0x11,
68 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV = 0x16,
69 MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV = 0x19
71 typedef struct MpegTSWrite {
72 const AVClass *av_class;
73 MpegTSSection pat; /* MPEG2 pat table */
74 MpegTSSection sdt; /* MPEG2 sdt table context */
75 MpegTSService **services;
77 int sdt_packet_period;
79 int pat_packet_period;
84 int mux_rate; ///< set to 1 when VBR
87 int transport_stream_id;
88 int original_network_id;
96 int reemit_pat_pmt; // backward compatibility
99 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
100 #define MPEGTS_FLAG_AAC_LATM 0x02
101 #define MPEGTS_FLAG_PAT_PMT_AT_FRAMES 0x04
108 int omit_video_pes_length;
111 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
112 #define DEFAULT_PES_HEADER_FREQ 16
113 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
115 /* The section length is 12 bits. The first 2 are set to 0, the remaining
116 * 10 bits should not exceed 1021. */
117 #define SECTION_LENGTH 1020
119 /* NOTE: 4 bytes must be left at the end for the crc32 */
120 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
123 unsigned char packet[TS_PACKET_SIZE];
124 const unsigned char *buf_ptr;
126 int first, b, len1, left;
128 crc = av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE),
131 buf[len - 4] = (crc >> 24) & 0xff;
132 buf[len - 3] = (crc >> 16) & 0xff;
133 buf[len - 2] = (crc >> 8) & 0xff;
134 buf[len - 1] = crc & 0xff;
136 /* send each packet */
139 first = buf == buf_ptr;
147 s->cc = s->cc + 1 & 0xf;
150 *q++ = 0; /* 0 offset */
151 len1 = TS_PACKET_SIZE - (q - packet);
154 memcpy(q, buf_ptr, len1);
156 /* add known padding data */
157 left = TS_PACKET_SIZE - (q - packet);
159 memset(q, 0xff, left);
161 s->write_packet(s, packet);
168 static inline void put16(uint8_t **q_ptr, int val)
177 static int mpegts_write_section1(MpegTSSection *s, int tid, int id,
178 int version, int sec_num, int last_sec_num,
179 uint8_t *buf, int len)
181 uint8_t section[1024], *q;
182 unsigned int tot_len;
183 /* reserved_future_use field must be set to 1 for SDT */
184 unsigned int flags = tid == SDT_TID ? 0xf000 : 0xb000;
186 tot_len = 3 + 5 + len + 4;
187 /* check if not too big */
189 return AVERROR_INVALIDDATA;
193 put16(&q, flags | (len + 5 + 4)); /* 5 byte header + 4 byte CRC */
195 *q++ = 0xc1 | (version << 1); /* current_next_indicator = 1 */
200 mpegts_write_section(s, section, tot_len);
204 /*********************************************/
207 #define DEFAULT_PROVIDER_NAME "FFmpeg"
208 #define DEFAULT_SERVICE_NAME "Service01"
210 /* we retransmit the SI info at this rate */
211 #define SDT_RETRANS_TIME 500
212 #define PAT_RETRANS_TIME 100
213 #define PCR_RETRANS_TIME 20
215 typedef struct MpegTSWriteStream {
216 struct MpegTSService *service;
217 int pid; /* stream associated pid */
220 int first_pts_check; ///< first pts check needed
221 int prev_payload_key;
226 AVFormatContext *amux;
230 static void mpegts_write_pat(AVFormatContext *s)
232 MpegTSWrite *ts = s->priv_data;
233 MpegTSService *service;
234 uint8_t data[SECTION_LENGTH], *q;
238 for (i = 0; i < ts->nb_services; i++) {
239 service = ts->services[i];
240 put16(&q, service->sid);
241 put16(&q, 0xe000 | service->pmt.pid);
243 mpegts_write_section1(&ts->pat, PAT_TID, ts->tsid, ts->tables_version, 0, 0,
247 static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
249 MpegTSWrite *ts = s->priv_data;
250 uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, *program_info_length_ptr;
251 int val, stream_type, i, err = 0;
254 put16(&q, 0xe000 | service->pcr_pid);
256 program_info_length_ptr = q;
257 q += 2; /* patched after */
259 /* put program info here */
261 val = 0xf000 | (q - program_info_length_ptr - 2);
262 program_info_length_ptr[0] = val >> 8;
263 program_info_length_ptr[1] = val;
265 for (i = 0; i < s->nb_streams; i++) {
266 AVStream *st = s->streams[i];
267 MpegTSWriteStream *ts_st = st->priv_data;
268 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
270 if (q - data > SECTION_LENGTH - 32) {
274 switch (st->codec->codec_id) {
275 case AV_CODEC_ID_MPEG1VIDEO:
276 case AV_CODEC_ID_MPEG2VIDEO:
277 stream_type = STREAM_TYPE_VIDEO_MPEG2;
279 case AV_CODEC_ID_MPEG4:
280 stream_type = STREAM_TYPE_VIDEO_MPEG4;
282 case AV_CODEC_ID_H264:
283 stream_type = STREAM_TYPE_VIDEO_H264;
285 case AV_CODEC_ID_HEVC:
286 stream_type = STREAM_TYPE_VIDEO_HEVC;
288 case AV_CODEC_ID_CAVS:
289 stream_type = STREAM_TYPE_VIDEO_CAVS;
291 case AV_CODEC_ID_DIRAC:
292 stream_type = STREAM_TYPE_VIDEO_DIRAC;
294 case AV_CODEC_ID_MP2:
295 case AV_CODEC_ID_MP3:
296 stream_type = STREAM_TYPE_AUDIO_MPEG1;
298 case AV_CODEC_ID_AAC:
299 stream_type = (ts->flags & MPEGTS_FLAG_AAC_LATM)
300 ? STREAM_TYPE_AUDIO_AAC_LATM
301 : STREAM_TYPE_AUDIO_AAC;
303 case AV_CODEC_ID_AAC_LATM:
304 stream_type = STREAM_TYPE_AUDIO_AAC_LATM;
306 case AV_CODEC_ID_AC3:
307 stream_type = STREAM_TYPE_AUDIO_AC3;
309 case AV_CODEC_ID_DTS:
310 stream_type = STREAM_TYPE_AUDIO_DTS;
312 case AV_CODEC_ID_TRUEHD:
313 stream_type = STREAM_TYPE_AUDIO_TRUEHD;
316 stream_type = STREAM_TYPE_PRIVATE_DATA;
321 put16(&q, 0xe000 | ts_st->pid);
323 q += 2; /* patched after */
325 /* write optional descriptors here */
326 switch (st->codec->codec_type) {
327 case AVMEDIA_TYPE_AUDIO:
328 if (st->codec->codec_id==AV_CODEC_ID_EAC3) {
329 *q++=0x7a; // EAC3 descriptor see A038 DVB SI
330 *q++=1; // 1 byte, all flags sets to 0
331 *q++=0; // omit all fields...
333 if (st->codec->codec_id==AV_CODEC_ID_S302M) {
334 *q++ = 0x05; /* MPEG-2 registration descriptor*/
344 char *next = lang->value;
347 *q++ = 0x0a; /* ISO 639 language descriptor */
351 for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
352 if (q - data > SECTION_LENGTH - 4) {
356 next = strchr(p, ',');
357 if (strlen(p) != 3 && (!next || next != p + 3))
358 continue; /* not a 3-letter code */
364 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
366 else if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
368 else if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
371 *q++ = 0; /* undefined type */
377 q -= 2; /* no language codes were written */
380 case AVMEDIA_TYPE_SUBTITLE:
382 const char default_language[] = "und";
383 const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
385 if (st->codec->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
387 int extradata_copied = 0;
389 *q++ = 0x59; /* subtitling_descriptor */
392 while (strlen(language) >= 3) {
393 if (sizeof(data) - (q - data) < 8) { /* 8 bytes per DVB subtitle substream data */
401 if (*language != '\0')
404 if (st->codec->extradata_size - extradata_copied >= 5) {
405 *q++ = st->codec->extradata[extradata_copied + 4]; /* subtitling_type */
406 memcpy(q, st->codec->extradata + extradata_copied, 4); /* composition_page_id and ancillary_page_id */
407 extradata_copied += 5;
411 * 0x10 - normal with no monitor aspect ratio criticality
412 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
413 *q++ = (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED) ? 0x20 : 0x10;
414 if ((st->codec->extradata_size == 4) && (extradata_copied == 0)) {
415 /* support of old 4-byte extradata format */
416 memcpy(q, st->codec->extradata, 4); /* composition_page_id and ancillary_page_id */
417 extradata_copied += 4;
420 put16(&q, 1); /* composition_page_id */
421 put16(&q, 1); /* ancillary_page_id */
426 *len_ptr = q - len_ptr - 1;
427 } else if (st->codec->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
428 uint8_t *len_ptr = NULL;
429 int extradata_copied = 0;
431 /* The descriptor tag. teletext_descriptor */
435 while (strlen(language) >= 3 && q - data < sizeof(data) - 6) {
440 if (*language != '\0')
443 if (st->codec->extradata_size - 1 > extradata_copied) {
444 memcpy(q, st->codec->extradata + extradata_copied, 2);
445 extradata_copied += 2;
448 /* The Teletext descriptor:
449 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
450 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
451 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
457 *len_ptr = q - len_ptr - 1;
461 case AVMEDIA_TYPE_VIDEO:
462 if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
463 *q++ = 0x05; /*MPEG-2 registration descriptor*/
471 case AVMEDIA_TYPE_DATA:
472 if (st->codec->codec_id == AV_CODEC_ID_SMPTE_KLV) {
473 *q++ = 0x05; /* MPEG-2 registration descriptor */
483 val = 0xf000 | (q - desc_length_ptr - 2);
484 desc_length_ptr[0] = val >> 8;
485 desc_length_ptr[1] = val;
489 av_log(s, AV_LOG_ERROR,
490 "The PMT section cannot fit stream %d and all following streams.\n"
491 "Try reducing the number of languages in the audio streams "
492 "or the total number of streams.\n", i);
494 mpegts_write_section1(&service->pmt, PMT_TID, service->sid, ts->tables_version, 0, 0,
499 /* NOTE: !str is accepted for an empty string */
500 static void putstr8(uint8_t **q_ptr, const char *str)
516 static void mpegts_write_sdt(AVFormatContext *s)
518 MpegTSWrite *ts = s->priv_data;
519 MpegTSService *service;
520 uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
521 int i, running_status, free_ca_mode, val;
526 for (i = 0; i < ts->nb_services; i++) {
527 service = ts->services[i];
528 put16(&q, service->sid);
529 *q++ = 0xfc | 0x00; /* currently no EIT info */
530 desc_list_len_ptr = q;
532 running_status = 4; /* running */
535 /* write only one descriptor for the service name and provider */
539 *q++ = ts->service_type;
540 putstr8(&q, service->provider_name);
541 putstr8(&q, service->name);
542 desc_len_ptr[0] = q - desc_len_ptr - 1;
544 /* fill descriptor length */
545 val = (running_status << 13) | (free_ca_mode << 12) |
546 (q - desc_list_len_ptr - 2);
547 desc_list_len_ptr[0] = val >> 8;
548 desc_list_len_ptr[1] = val;
550 mpegts_write_section1(&ts->sdt, SDT_TID, ts->tsid, ts->tables_version, 0, 0,
554 static MpegTSService *mpegts_add_service(MpegTSWrite *ts, int sid,
555 const char *provider_name,
558 MpegTSService *service;
560 service = av_mallocz(sizeof(MpegTSService));
563 service->pmt.pid = ts->pmt_start_pid + ts->nb_services;
565 service->pcr_pid = 0x1fff;
566 service->provider_name = av_strdup(provider_name);
567 service->name = av_strdup(name);
568 if (!service->provider_name || !service->name)
570 if (av_dynarray_add_nofree(&ts->services, &ts->nb_services, service) < 0)
575 av_freep(&service->provider_name);
576 av_freep(&service->name);
581 static int64_t get_pcr(const MpegTSWrite *ts, AVIOContext *pb)
583 return av_rescale(avio_tell(pb) + 11, 8 * PCR_TIME_BASE, ts->mux_rate) +
587 static void mpegts_prefix_m2ts_header(AVFormatContext *s)
589 MpegTSWrite *ts = s->priv_data;
591 int64_t pcr = get_pcr(s->priv_data, s->pb);
592 uint32_t tp_extra_header = pcr % 0x3fffffff;
593 tp_extra_header = AV_RB32(&tp_extra_header);
594 avio_write(s->pb, (unsigned char *) &tp_extra_header,
595 sizeof(tp_extra_header));
599 static void section_write_packet(MpegTSSection *s, const uint8_t *packet)
601 AVFormatContext *ctx = s->opaque;
602 mpegts_prefix_m2ts_header(ctx);
603 avio_write(ctx->pb, packet, TS_PACKET_SIZE);
606 static int mpegts_write_header(AVFormatContext *s)
608 MpegTSWrite *ts = s->priv_data;
609 MpegTSWriteStream *ts_st;
610 MpegTSService *service;
611 AVStream *st, *pcr_st = NULL;
612 AVDictionaryEntry *title, *provider;
614 const char *service_name;
615 const char *provider_name;
619 if (s->max_delay < 0) /* Not set by the caller */
622 // round up to a whole number of TS packets
623 ts->pes_payload_size = (ts->pes_payload_size + 14 + 183) / 184 * 184 - 14;
625 ts->tsid = ts->transport_stream_id;
626 ts->onid = ts->original_network_id;
627 /* allocate a single DVB service */
628 title = av_dict_get(s->metadata, "service_name", NULL, 0);
630 title = av_dict_get(s->metadata, "title", NULL, 0);
631 service_name = title ? title->value : DEFAULT_SERVICE_NAME;
632 provider = av_dict_get(s->metadata, "service_provider", NULL, 0);
633 provider_name = provider ? provider->value : DEFAULT_PROVIDER_NAME;
634 service = mpegts_add_service(ts, ts->service_id,
635 provider_name, service_name);
638 return AVERROR(ENOMEM);
640 service->pmt.write_packet = section_write_packet;
641 service->pmt.opaque = s;
642 service->pmt.cc = 15;
644 ts->pat.pid = PAT_PID;
645 /* Initialize at 15 so that it wraps and is equal to 0 for the
646 * first packet we write. */
648 ts->pat.write_packet = section_write_packet;
651 ts->sdt.pid = SDT_PID;
653 ts->sdt.write_packet = section_write_packet;
656 pids = av_malloc_array(s->nb_streams, sizeof(*pids));
658 ret = AVERROR(ENOMEM);
662 /* assign pids to each stream */
663 for (i = 0; i < s->nb_streams; i++) {
666 ts_st = av_mallocz(sizeof(MpegTSWriteStream));
668 ret = AVERROR(ENOMEM);
671 st->priv_data = ts_st;
673 ts_st->user_tb = st->time_base;
674 avpriv_set_pts_info(st, 33, 1, 90000);
676 ts_st->payload = av_mallocz(ts->pes_payload_size);
677 if (!ts_st->payload) {
678 ret = AVERROR(ENOMEM);
681 ts_st->service = service;
682 /* MPEG pid values < 16 are reserved. Applications which set st->id in
683 * this range are assigned a calculated pid. */
685 ts_st->pid = ts->start_pid + i;
686 } else if (st->id < 0x1FFF) {
689 av_log(s, AV_LOG_ERROR,
690 "Invalid stream id %d, must be less than 8191\n", st->id);
691 ret = AVERROR(EINVAL);
694 if (ts_st->pid == service->pmt.pid) {
695 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
696 ret = AVERROR(EINVAL);
699 for (j = 0; j < i; j++) {
700 if (pids[j] == ts_st->pid) {
701 av_log(s, AV_LOG_ERROR, "Duplicate stream id %d\n", ts_st->pid);
702 ret = AVERROR(EINVAL);
706 pids[i] = ts_st->pid;
707 ts_st->payload_pts = AV_NOPTS_VALUE;
708 ts_st->payload_dts = AV_NOPTS_VALUE;
709 ts_st->first_pts_check = 1;
711 /* update PCR pid by using the first video stream */
712 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
713 service->pcr_pid == 0x1fff) {
714 service->pcr_pid = ts_st->pid;
717 if (st->codec->codec_id == AV_CODEC_ID_AAC &&
718 st->codec->extradata_size > 0) {
720 ts_st->amux = avformat_alloc_context();
722 ret = AVERROR(ENOMEM);
725 ts_st->amux->oformat =
726 av_guess_format((ts->flags & MPEGTS_FLAG_AAC_LATM) ? "latm" : "adts",
728 if (!ts_st->amux->oformat) {
729 ret = AVERROR(EINVAL);
732 if (!(ast = avformat_new_stream(ts_st->amux, NULL))) {
733 ret = AVERROR(ENOMEM);
736 ret = avcodec_copy_context(ast->codec, st->codec);
739 ast->time_base = st->time_base;
740 ret = avformat_write_header(ts_st->amux, NULL);
748 /* if no video stream, use the first stream as PCR */
749 if (service->pcr_pid == 0x1fff && s->nb_streams > 0) {
750 pcr_st = s->streams[0];
751 ts_st = pcr_st->priv_data;
752 service->pcr_pid = ts_st->pid;
754 ts_st = pcr_st->priv_data;
756 if (ts->mux_rate > 1) {
757 service->pcr_packet_period = (ts->mux_rate * ts->pcr_period) /
758 (TS_PACKET_SIZE * 8 * 1000);
759 ts->sdt_packet_period = (ts->mux_rate * SDT_RETRANS_TIME) /
760 (TS_PACKET_SIZE * 8 * 1000);
761 ts->pat_packet_period = (ts->mux_rate * PAT_RETRANS_TIME) /
762 (TS_PACKET_SIZE * 8 * 1000);
765 ts->first_pcr = av_rescale(s->max_delay, PCR_TIME_BASE, AV_TIME_BASE);
767 /* Arbitrary values, PAT/PMT will also be written on video key frames */
768 ts->sdt_packet_period = 200;
769 ts->pat_packet_period = 40;
770 if (pcr_st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
771 if (!pcr_st->codec->frame_size) {
772 av_log(s, AV_LOG_WARNING, "frame size not set\n");
773 service->pcr_packet_period =
774 pcr_st->codec->sample_rate / (10 * 512);
776 service->pcr_packet_period =
777 pcr_st->codec->sample_rate / (10 * pcr_st->codec->frame_size);
780 // max delta PCR 0.1s
781 // TODO: should be avg_frame_rate
782 service->pcr_packet_period =
783 ts_st->user_tb.den / (10 * ts_st->user_tb.num);
785 if (!service->pcr_packet_period)
786 service->pcr_packet_period = 1;
789 ts->last_pat_ts = AV_NOPTS_VALUE;
790 // The user specified a period, use only it
791 if (ts->pat_period < INT_MAX/2) {
792 ts->pat_packet_period = INT_MAX;
795 // output a PCR as soon as possible
796 service->pcr_packet_count = service->pcr_packet_period;
797 ts->pat_packet_count = ts->pat_packet_period - 1;
798 ts->sdt_packet_count = ts->sdt_packet_period - 1;
800 if (ts->mux_rate == 1)
801 av_log(s, AV_LOG_VERBOSE, "muxrate VBR, ");
803 av_log(s, AV_LOG_VERBOSE, "muxrate %d, ", ts->mux_rate);
804 av_log(s, AV_LOG_VERBOSE,
805 "pcr every %d pkts, sdt every %d, pat/pmt every %d pkts\n",
806 service->pcr_packet_period,
807 ts->sdt_packet_period, ts->pat_packet_period);
809 if (ts->m2ts_mode == -1) {
810 if (av_match_ext(s->filename, "m2ts")) {
821 for (i = 0; i < s->nb_streams; i++) {
823 ts_st = st->priv_data;
825 av_freep(&ts_st->payload);
827 avformat_free_context(ts_st->amux);
831 av_freep(&st->priv_data);
834 for (i = 0; i < ts->nb_services; i++) {
835 service = ts->services[i];
836 av_freep(&service->provider_name);
837 av_freep(&service->name);
840 av_freep(&ts->services);
844 /* send SDT, PAT and PMT tables regulary */
845 static void retransmit_si_info(AVFormatContext *s, int force_pat, int64_t dts)
847 MpegTSWrite *ts = s->priv_data;
850 if (++ts->sdt_packet_count == ts->sdt_packet_period) {
851 ts->sdt_packet_count = 0;
854 if (++ts->pat_packet_count == ts->pat_packet_period ||
855 (dts != AV_NOPTS_VALUE && ts->last_pat_ts == AV_NOPTS_VALUE) ||
856 (dts != AV_NOPTS_VALUE && dts - ts->last_pat_ts >= ts->pat_period*90000.0) ||
858 ts->pat_packet_count = 0;
859 if (dts != AV_NOPTS_VALUE)
860 ts->last_pat_ts = FFMAX(dts, ts->last_pat_ts);
862 for (i = 0; i < ts->nb_services; i++)
863 mpegts_write_pmt(s, ts->services[i]);
867 static int write_pcr_bits(uint8_t *buf, int64_t pcr)
869 int64_t pcr_low = pcr % 300, pcr_high = pcr / 300;
871 *buf++ = pcr_high >> 25;
872 *buf++ = pcr_high >> 17;
873 *buf++ = pcr_high >> 9;
874 *buf++ = pcr_high >> 1;
875 *buf++ = pcr_high << 7 | pcr_low >> 8 | 0x7e;
881 /* Write a single null transport stream packet */
882 static void mpegts_insert_null_packet(AVFormatContext *s)
885 uint8_t buf[TS_PACKET_SIZE];
892 memset(q, 0x0FF, TS_PACKET_SIZE - (q - buf));
893 mpegts_prefix_m2ts_header(s);
894 avio_write(s->pb, buf, TS_PACKET_SIZE);
897 /* Write a single transport stream packet with a PCR and no payload */
898 static void mpegts_insert_pcr_only(AVFormatContext *s, AVStream *st)
900 MpegTSWrite *ts = s->priv_data;
901 MpegTSWriteStream *ts_st = st->priv_data;
903 uint8_t buf[TS_PACKET_SIZE];
907 *q++ = ts_st->pid >> 8;
909 *q++ = 0x20 | ts_st->cc; /* Adaptation only */
910 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
911 *q++ = TS_PACKET_SIZE - 5; /* Adaptation Field Length */
912 *q++ = 0x10; /* Adaptation flags: PCR present */
914 /* PCR coded into 6 bytes */
915 q += write_pcr_bits(q, get_pcr(ts, s->pb));
918 memset(q, 0xFF, TS_PACKET_SIZE - (q - buf));
919 mpegts_prefix_m2ts_header(s);
920 avio_write(s->pb, buf, TS_PACKET_SIZE);
923 static void write_pts(uint8_t *q, int fourbits, int64_t pts)
927 val = fourbits << 4 | (((pts >> 30) & 0x07) << 1) | 1;
929 val = (((pts >> 15) & 0x7fff) << 1) | 1;
932 val = (((pts) & 0x7fff) << 1) | 1;
937 /* Set an adaptation field flag in an MPEG-TS packet*/
938 static void set_af_flag(uint8_t *pkt, int flag)
940 // expect at least one flag to set
943 if ((pkt[3] & 0x20) == 0) {
944 // no AF yet, set adaptation field flag
946 // 1 byte length, no flags
953 /* Extend the adaptation field by size bytes */
954 static void extend_af(uint8_t *pkt, int size)
956 // expect already existing adaptation field
957 av_assert0(pkt[3] & 0x20);
961 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
962 static uint8_t *get_ts_payload_start(uint8_t *pkt)
965 return pkt + 5 + pkt[4];
970 /* Add a PES header to the front of the payload, and segment into an integer
971 * number of TS packets. The final TS packet is padded using an oversized
972 * adaptation header to exactly fill the last TS packet.
973 * NOTE: 'payload' contains a complete PES payload. */
974 static void mpegts_write_pes(AVFormatContext *s, AVStream *st,
975 const uint8_t *payload, int payload_size,
976 int64_t pts, int64_t dts, int key)
978 MpegTSWriteStream *ts_st = st->priv_data;
979 MpegTSWrite *ts = s->priv_data;
980 uint8_t buf[TS_PACKET_SIZE];
982 int val, is_start, len, header_len, write_pcr, is_dvb_subtitle, is_dvb_teletext, flags;
983 int afc_len, stuffing_len;
984 int64_t pcr = -1; /* avoid warning */
985 int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE);
986 int force_pat = st->codec->codec_type == AVMEDIA_TYPE_VIDEO && key && !ts_st->prev_payload_key;
988 av_assert0(ts_st->payload != buf || st->codec->codec_type != AVMEDIA_TYPE_VIDEO);
989 if (ts->flags & MPEGTS_FLAG_PAT_PMT_AT_FRAMES && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
994 while (payload_size > 0) {
995 retransmit_si_info(s, force_pat, dts);
999 if (ts_st->pid == ts_st->service->pcr_pid) {
1000 if (ts->mux_rate > 1 || is_start) // VBR pcr period is based on frames
1001 ts_st->service->pcr_packet_count++;
1002 if (ts_st->service->pcr_packet_count >=
1003 ts_st->service->pcr_packet_period) {
1004 ts_st->service->pcr_packet_count = 0;
1009 if (ts->mux_rate > 1 && dts != AV_NOPTS_VALUE &&
1010 (dts - get_pcr(ts, s->pb) / 300) > delay) {
1011 /* pcr insert gets priority over null packet insert */
1013 mpegts_insert_pcr_only(s, st);
1015 mpegts_insert_null_packet(s);
1016 /* recalculate write_pcr and possibly retransmit si_info */
1020 /* prepare packet header */
1023 val = ts_st->pid >> 8;
1028 ts_st->cc = ts_st->cc + 1 & 0xf;
1029 *q++ = 0x10 | ts_st->cc; // payload indicator + CC
1030 if (key && is_start && pts != AV_NOPTS_VALUE) {
1031 // set Random Access for key frames
1032 if (ts_st->pid == ts_st->service->pcr_pid)
1034 set_af_flag(buf, 0x40);
1035 q = get_ts_payload_start(buf);
1038 set_af_flag(buf, 0x10);
1039 q = get_ts_payload_start(buf);
1040 // add 11, pcr references the last byte of program clock reference base
1041 if (ts->mux_rate > 1)
1042 pcr = get_pcr(ts, s->pb);
1044 pcr = (dts - delay) * 300;
1045 if (dts != AV_NOPTS_VALUE && dts < pcr / 300)
1046 av_log(s, AV_LOG_WARNING, "dts < pcr, TS is invalid\n");
1047 extend_af(buf, write_pcr_bits(q, pcr));
1048 q = get_ts_payload_start(buf);
1051 int pes_extension = 0;
1052 int pes_header_stuffing_bytes = 0;
1053 /* write PES header */
1057 is_dvb_subtitle = 0;
1058 is_dvb_teletext = 0;
1059 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1060 if (st->codec->codec_id == AV_CODEC_ID_DIRAC)
1064 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1065 (st->codec->codec_id == AV_CODEC_ID_MP2 ||
1066 st->codec->codec_id == AV_CODEC_ID_MP3 ||
1067 st->codec->codec_id == AV_CODEC_ID_AAC)) {
1069 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1070 st->codec->codec_id == AV_CODEC_ID_AC3 &&
1075 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1076 if (st->codec->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
1077 is_dvb_subtitle = 1;
1078 } else if (st->codec->codec_id == AV_CODEC_ID_DVB_TELETEXT) {
1079 is_dvb_teletext = 1;
1085 if (pts != AV_NOPTS_VALUE) {
1089 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1093 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1094 st->codec->codec_id == AV_CODEC_ID_DIRAC) {
1095 /* set PES_extension_flag */
1099 /* One byte for PES2 extension flag +
1100 * one byte for extension length +
1101 * one byte for extension id */
1104 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1105 * otherwise it will not play sound on blu-ray
1107 if (ts->m2ts_mode &&
1108 st->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
1109 st->codec->codec_id == AV_CODEC_ID_AC3) {
1110 /* set PES_extension_flag */
1115 if (is_dvb_teletext) {
1116 pes_header_stuffing_bytes = 0x24 - header_len;
1119 len = payload_size + header_len + 3;
1120 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1121 if (is_dvb_subtitle) {
1127 if (ts->omit_video_pes_length && st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1133 /* data alignment indicator is required for subtitle and data streams */
1134 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA)
1139 if (pts != AV_NOPTS_VALUE) {
1140 write_pts(q, flags >> 6, pts);
1143 if (dts != AV_NOPTS_VALUE && pts != AV_NOPTS_VALUE && dts != pts) {
1144 write_pts(q, 1, dts);
1147 if (pes_extension && st->codec->codec_id == AV_CODEC_ID_DIRAC) {
1148 flags = 0x01; /* set PES_extension_flag_2 */
1150 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1151 /* Set the stream ID extension flag bit to 0 and
1152 * write the extended stream ID. */
1155 /* For Blu-ray AC3 Audio Setting extended flags */
1156 if (ts->m2ts_mode &&
1158 st->codec->codec_id == AV_CODEC_ID_AC3) {
1159 flags = 0x01; /* set PES_extension_flag_2 */
1161 *q++ = 0x80 | 0x01; /* marker bit + extension length */
1162 *q++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1166 if (is_dvb_subtitle) {
1167 /* First two fields of DVB subtitles PES data:
1168 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1169 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1173 if (is_dvb_teletext) {
1174 memset(q, 0xff, pes_header_stuffing_bytes);
1175 q += pes_header_stuffing_bytes;
1180 header_len = q - buf;
1182 len = TS_PACKET_SIZE - header_len;
1183 if (len > payload_size)
1185 stuffing_len = TS_PACKET_SIZE - header_len - len;
1186 if (stuffing_len > 0) {
1187 /* add stuffing with AFC */
1188 if (buf[3] & 0x20) {
1189 /* stuffing already present: increase its size */
1190 afc_len = buf[4] + 1;
1191 memmove(buf + 4 + afc_len + stuffing_len,
1193 header_len - (4 + afc_len));
1194 buf[4] += stuffing_len;
1195 memset(buf + 4 + afc_len, 0xff, stuffing_len);
1198 memmove(buf + 4 + stuffing_len, buf + 4, header_len - 4);
1200 buf[4] = stuffing_len - 1;
1201 if (stuffing_len >= 2) {
1203 memset(buf + 6, 0xff, stuffing_len - 2);
1208 if (is_dvb_subtitle && payload_size == len) {
1209 memcpy(buf + TS_PACKET_SIZE - len, payload, len - 1);
1210 buf[TS_PACKET_SIZE - 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1212 memcpy(buf + TS_PACKET_SIZE - len, payload, len);
1216 payload_size -= len;
1217 mpegts_prefix_m2ts_header(s);
1218 avio_write(s->pb, buf, TS_PACKET_SIZE);
1220 ts_st->prev_payload_key = key;
1223 int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1225 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1226 if (!st->nb_frames) {
1227 av_log(s, AV_LOG_ERROR, "H.264 bitstream malformed, "
1228 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1229 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1230 return AVERROR_INVALIDDATA;
1232 av_log(s, AV_LOG_WARNING, "H.264 bitstream error, startcode missing, size %d", pkt->size);
1233 if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data));
1234 av_log(s, AV_LOG_WARNING, "\n");
1239 static int check_hevc_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
1241 if (pkt->size < 5 || AV_RB32(pkt->data) != 0x0000001 && AV_RB24(pkt->data) != 0x000001) {
1242 if (!st->nb_frames) {
1243 av_log(s, AV_LOG_ERROR, "HEVC bitstream malformed, no startcode found\n");
1244 return AVERROR_PATCHWELCOME;
1246 av_log(s, AV_LOG_WARNING, "HEVC bitstream error, startcode missing, size %d", pkt->size);
1247 if (pkt->size) av_log(s, AV_LOG_WARNING, " data %08X", AV_RB32(pkt->data));
1248 av_log(s, AV_LOG_WARNING, "\n");
1253 static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
1255 AVStream *st = s->streams[pkt->stream_index];
1256 int size = pkt->size;
1257 uint8_t *buf = pkt->data;
1258 uint8_t *data = NULL;
1259 MpegTSWrite *ts = s->priv_data;
1260 MpegTSWriteStream *ts_st = st->priv_data;
1261 const int64_t delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) * 2;
1262 int64_t dts = pkt->dts, pts = pkt->pts;
1264 if (ts->reemit_pat_pmt) {
1265 av_log(s, AV_LOG_WARNING,
1266 "resend_headers option is deprecated, use -mpegts_flags resend_headers\n");
1267 ts->reemit_pat_pmt = 0;
1268 ts->flags |= MPEGTS_FLAG_REEMIT_PAT_PMT;
1271 if (ts->flags & MPEGTS_FLAG_REEMIT_PAT_PMT) {
1272 ts->pat_packet_count = ts->pat_packet_period - 1;
1273 ts->sdt_packet_count = ts->sdt_packet_period - 1;
1274 ts->flags &= ~MPEGTS_FLAG_REEMIT_PAT_PMT;
1277 if (ts->copyts < 1) {
1278 if (pts != AV_NOPTS_VALUE)
1280 if (dts != AV_NOPTS_VALUE)
1284 if (ts_st->first_pts_check && pts == AV_NOPTS_VALUE) {
1285 av_log(s, AV_LOG_ERROR, "first pts value must be set\n");
1286 return AVERROR_INVALIDDATA;
1288 ts_st->first_pts_check = 0;
1290 if (st->codec->codec_id == AV_CODEC_ID_H264) {
1291 const uint8_t *p = buf, *buf_end = p + size;
1292 uint32_t state = -1;
1293 int extradd = (pkt->flags & AV_PKT_FLAG_KEY) ? st->codec->extradata_size : 0;
1294 int ret = ff_check_h264_startcode(s, st, pkt);
1298 if (extradd && AV_RB24(st->codec->extradata) > 1)
1302 p = avpriv_find_start_code(p, buf_end, &state);
1303 av_log(s, AV_LOG_TRACE, "nal %d\n", state & 0x1f);
1304 if ((state & 0x1f) == 7)
1306 } while (p < buf_end && (state & 0x1f) != 9 &&
1307 (state & 0x1f) != 5 && (state & 0x1f) != 1);
1309 if ((state & 0x1f) != 5)
1311 if ((state & 0x1f) != 9) { // AUD NAL
1312 data = av_malloc(pkt->size + 6 + extradd);
1314 return AVERROR(ENOMEM);
1315 memcpy(data + 6, st->codec->extradata, extradd);
1316 memcpy(data + 6 + extradd, pkt->data, pkt->size);
1317 AV_WB32(data, 0x00000001);
1319 data[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1321 size = pkt->size + 6 + extradd;
1323 } else if (st->codec->codec_id == AV_CODEC_ID_AAC) {
1324 if (pkt->size < 2) {
1325 av_log(s, AV_LOG_ERROR, "AAC packet too short\n");
1326 return AVERROR_INVALIDDATA;
1328 if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
1333 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
1334 "and extradata missing\n");
1336 return AVERROR_INVALIDDATA;
1338 av_init_packet(&pkt2);
1339 pkt2.data = pkt->data;
1340 pkt2.size = pkt->size;
1341 av_assert0(pkt->dts != AV_NOPTS_VALUE);
1342 pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
1344 ret = avio_open_dyn_buf(&ts_st->amux->pb);
1346 return AVERROR(ENOMEM);
1348 ret = av_write_frame(ts_st->amux, &pkt2);
1350 ffio_free_dyn_buf(&ts_st->amux->pb);
1353 size = avio_close_dyn_buf(ts_st->amux->pb, &data);
1354 ts_st->amux->pb = NULL;
1358 } else if (st->codec->codec_id == AV_CODEC_ID_HEVC) {
1359 int ret = check_hevc_startcode(s, st, pkt);
1364 if (pkt->dts != AV_NOPTS_VALUE) {
1366 for(i=0; i<s->nb_streams; i++) {
1367 AVStream *st2 = s->streams[i];
1368 MpegTSWriteStream *ts_st2 = st2->priv_data;
1369 if ( ts_st2->payload_size
1370 && (ts_st2->payload_dts == AV_NOPTS_VALUE || dts - ts_st2->payload_dts > delay/2)) {
1371 mpegts_write_pes(s, st2, ts_st2->payload, ts_st2->payload_size,
1372 ts_st2->payload_pts, ts_st2->payload_dts,
1373 ts_st2->payload_flags & AV_PKT_FLAG_KEY);
1374 ts_st2->payload_size = 0;
1379 if (ts_st->payload_size && (ts_st->payload_size + size > ts->pes_payload_size ||
1380 (dts != AV_NOPTS_VALUE && ts_st->payload_dts != AV_NOPTS_VALUE &&
1381 av_compare_ts(dts - ts_st->payload_dts, st->time_base,
1382 s->max_delay, AV_TIME_BASE_Q) >= 0))) {
1383 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1384 ts_st->payload_pts, ts_st->payload_dts,
1385 ts_st->payload_flags & AV_PKT_FLAG_KEY);
1386 ts_st->payload_size = 0;
1389 if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO || size > ts->pes_payload_size) {
1390 av_assert0(!ts_st->payload_size);
1391 // for video and subtitle, write a single pes packet
1392 mpegts_write_pes(s, st, buf, size, pts, dts,
1393 pkt->flags & AV_PKT_FLAG_KEY);
1398 if (!ts_st->payload_size) {
1399 ts_st->payload_pts = pts;
1400 ts_st->payload_dts = dts;
1401 ts_st->payload_flags = pkt->flags;
1404 memcpy(ts_st->payload + ts_st->payload_size, buf, size);
1405 ts_st->payload_size += size;
1412 static void mpegts_write_flush(AVFormatContext *s)
1416 /* flush current packets */
1417 for (i = 0; i < s->nb_streams; i++) {
1418 AVStream *st = s->streams[i];
1419 MpegTSWriteStream *ts_st = st->priv_data;
1420 if (ts_st->payload_size > 0) {
1421 mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_size,
1422 ts_st->payload_pts, ts_st->payload_dts,
1423 ts_st->payload_flags & AV_PKT_FLAG_KEY);
1424 ts_st->payload_size = 0;
1429 static int mpegts_write_packet(AVFormatContext *s, AVPacket *pkt)
1432 mpegts_write_flush(s);
1435 return mpegts_write_packet_internal(s, pkt);
1439 static int mpegts_write_end(AVFormatContext *s)
1441 MpegTSWrite *ts = s->priv_data;
1442 MpegTSService *service;
1446 mpegts_write_flush(s);
1448 for (i = 0; i < s->nb_streams; i++) {
1449 AVStream *st = s->streams[i];
1450 MpegTSWriteStream *ts_st = st->priv_data;
1451 av_freep(&ts_st->payload);
1453 avformat_free_context(ts_st->amux);
1458 for (i = 0; i < ts->nb_services; i++) {
1459 service = ts->services[i];
1460 av_freep(&service->provider_name);
1461 av_freep(&service->name);
1464 av_freep(&ts->services);
1469 static const AVOption options[] = {
1470 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
1471 offsetof(MpegTSWrite, transport_stream_id), AV_OPT_TYPE_INT,
1472 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1473 { "mpegts_original_network_id", "Set original_network_id field.",
1474 offsetof(MpegTSWrite, original_network_id), AV_OPT_TYPE_INT,
1475 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1476 { "mpegts_service_id", "Set service_id field.",
1477 offsetof(MpegTSWrite, service_id), AV_OPT_TYPE_INT,
1478 { .i64 = 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM },
1479 { "mpegts_service_type", "Set service_type field.",
1480 offsetof(MpegTSWrite, service_type), AV_OPT_TYPE_INT,
1481 { .i64 = 0x01 }, 0x01, 0xff, AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1482 { "digital_tv", "Digital Television.",
1483 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_TV }, 0x01, 0xff,
1484 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1485 { "digital_radio", "Digital Radio.",
1486 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_DIGITAL_RADIO }, 0x01, 0xff,
1487 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1488 { "teletext", "Teletext.",
1489 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_TELETEXT }, 0x01, 0xff,
1490 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1491 { "advanced_codec_digital_radio", "Advanced Codec Digital Radio.",
1492 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_RADIO }, 0x01, 0xff,
1493 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1494 { "mpeg2_digital_hdtv", "MPEG2 Digital HDTV.",
1495 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_MPEG2_DIGITAL_HDTV }, 0x01, 0xff,
1496 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1497 { "advanced_codec_digital_sdtv", "Advanced Codec Digital SDTV.",
1498 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_SDTV }, 0x01, 0xff,
1499 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1500 { "advanced_codec_digital_hdtv", "Advanced Codec Digital HDTV.",
1501 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_SERVICE_TYPE_ADVANCED_CODEC_DIGITAL_HDTV }, 0x01, 0xff,
1502 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_service_type" },
1503 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
1504 offsetof(MpegTSWrite, pmt_start_pid), AV_OPT_TYPE_INT,
1505 { .i64 = 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM },
1506 { "mpegts_start_pid", "Set the first pid.",
1507 offsetof(MpegTSWrite, start_pid), AV_OPT_TYPE_INT,
1508 { .i64 = 0x0100 }, 0x0020, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM },
1509 { "mpegts_m2ts_mode", "Enable m2ts mode.",
1510 offsetof(MpegTSWrite, m2ts_mode), AV_OPT_TYPE_INT,
1511 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
1513 offsetof(MpegTSWrite, mux_rate), AV_OPT_TYPE_INT,
1514 { .i64 = 1 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1515 { "pes_payload_size", "Minimum PES packet payload in bytes",
1516 offsetof(MpegTSWrite, pes_payload_size), AV_OPT_TYPE_INT,
1517 { .i64 = DEFAULT_PES_PAYLOAD_SIZE }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1518 { "mpegts_flags", "MPEG-TS muxing flags",
1519 offsetof(MpegTSWrite, flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, 0, INT_MAX,
1520 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1521 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1522 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_REEMIT_PAT_PMT }, 0, INT_MAX,
1523 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1524 { "latm", "Use LATM packetization for AAC",
1525 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_AAC_LATM }, 0, INT_MAX,
1526 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1527 { "pat_pmt_at_frames", "Reemit PAT and PMT at each video frame",
1528 0, AV_OPT_TYPE_CONST, { .i64 = MPEGTS_FLAG_PAT_PMT_AT_FRAMES}, 0, INT_MAX,
1529 AV_OPT_FLAG_ENCODING_PARAM, "mpegts_flags" },
1530 // backward compatibility
1531 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1532 offsetof(MpegTSWrite, reemit_pat_pmt), AV_OPT_TYPE_INT,
1533 { .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1534 { "mpegts_copyts", "don't offset dts/pts",
1535 offsetof(MpegTSWrite, copyts), AV_OPT_TYPE_INT,
1536 { .i64 = -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM },
1537 { "tables_version", "set PAT, PMT and SDT version",
1538 offsetof(MpegTSWrite, tables_version), AV_OPT_TYPE_INT,
1539 { .i64 = 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM },
1540 { "omit_video_pes_length", "Omit the PES packet length for video packets",
1541 offsetof(MpegTSWrite, omit_video_pes_length), AV_OPT_TYPE_INT,
1542 { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
1543 { "pcr_period", "PCR retransmission time",
1544 offsetof(MpegTSWrite, pcr_period), AV_OPT_TYPE_INT,
1545 { .i64 = PCR_RETRANS_TIME }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1546 { "pat_period", "PAT/PMT retransmission time limit in seconds",
1547 offsetof(MpegTSWrite, pat_period), AV_OPT_TYPE_FLOAT,
1548 { .dbl = INT_MAX }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
1552 static const AVClass mpegts_muxer_class = {
1553 .class_name = "MPEGTS muxer",
1554 .item_name = av_default_item_name,
1556 .version = LIBAVUTIL_VERSION_INT,
1559 AVOutputFormat ff_mpegts_muxer = {
1561 .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
1562 .mime_type = "video/MP2T",
1563 .extensions = "ts,m2t,m2ts,mts",
1564 .priv_data_size = sizeof(MpegTSWrite),
1565 .audio_codec = AV_CODEC_ID_MP2,
1566 .video_codec = AV_CODEC_ID_MPEG2VIDEO,
1567 .write_header = mpegts_write_header,
1568 .write_packet = mpegts_write_packet,
1569 .write_trailer = mpegts_write_end,
1570 .flags = AVFMT_ALLOW_FLUSH | AVFMT_VARIABLE_FPS,
1571 .priv_class = &mpegts_muxer_class,