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"
36 #define PCR_TIME_BASE 27000000
38 /* write DVB SI sections */
40 /*********************************************/
41 /* mpegts section writer */
43 typedef struct MpegTSSection
{
46 void (*write_packet
)(struct MpegTSSection
*s
, const uint8_t *packet
);
50 typedef struct MpegTSService
{
51 MpegTSSection pmt
; /* MPEG2 pmt table context */
52 int sid
; /* service ID */
57 int pcr_packet_period
;
60 typedef struct MpegTSWrite
{
61 const AVClass
*av_class
;
62 MpegTSSection pat
; /* MPEG2 pat table */
63 MpegTSSection sdt
; /* MPEG2 sdt table context */
64 MpegTSService
**services
;
66 int sdt_packet_period
;
68 int pat_packet_period
;
73 int mux_rate
; ///< set to 1 when VBR
76 int transport_stream_id
;
77 int original_network_id
;
84 int reemit_pat_pmt
; // backward compatibility
87 #define MPEGTS_FLAG_REEMIT_PAT_PMT 0x01
88 #define MPEGTS_FLAG_AAC_LATM 0x02
93 int omit_video_pes_length
;
96 /* a PES packet header is generated every DEFAULT_PES_HEADER_FREQ packets */
97 #define DEFAULT_PES_HEADER_FREQ 16
98 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)
100 /* The section length is 12 bits. The first 2 are set to 0, the remaining
101 * 10 bits should not exceed 1021. */
102 #define SECTION_LENGTH 1020
104 /* NOTE: 4 bytes must be left at the end for the crc32 */
105 static void mpegts_write_section(MpegTSSection
*s
, uint8_t *buf
, int len
)
108 unsigned char packet
[TS_PACKET_SIZE
];
109 const unsigned char *buf_ptr
;
111 int first
, b
, len1
, left
;
113 crc
= av_bswap32(av_crc(av_crc_get_table(AV_CRC_32_IEEE
),
116 buf
[len
- 4] = (crc
>> 24) & 0xff;
117 buf
[len
- 3] = (crc
>> 16) & 0xff;
118 buf
[len
- 2] = (crc
>> 8) & 0xff;
119 buf
[len
- 1] = crc
& 0xff;
121 /* send each packet */
124 first
= buf
== buf_ptr
;
132 s
->cc
= s
->cc
+ 1 & 0xf;
135 *q
++ = 0; /* 0 offset */
136 len1
= TS_PACKET_SIZE
- (q
- packet
);
139 memcpy(q
, buf_ptr
, len1
);
141 /* add known padding data */
142 left
= TS_PACKET_SIZE
- (q
- packet
);
144 memset(q
, 0xff, left
);
146 s
->write_packet(s
, packet
);
153 static inline void put16(uint8_t **q_ptr
, int val
)
162 static int mpegts_write_section1(MpegTSSection
*s
, int tid
, int id
,
163 int version
, int sec_num
, int last_sec_num
,
164 uint8_t *buf
, int len
)
166 uint8_t section
[1024], *q
;
167 unsigned int tot_len
;
168 /* reserved_future_use field must be set to 1 for SDT */
169 unsigned int flags
= tid
== SDT_TID
? 0xf000 : 0xb000;
171 tot_len
= 3 + 5 + len
+ 4;
172 /* check if not too big */
174 return AVERROR_INVALIDDATA
;
178 put16(&q
, flags
| (len
+ 5 + 4)); /* 5 byte header + 4 byte CRC */
180 *q
++ = 0xc1 | (version
<< 1); /* current_next_indicator = 1 */
185 mpegts_write_section(s
, section
, tot_len
);
189 /*********************************************/
192 #define DEFAULT_PROVIDER_NAME "FFmpeg"
193 #define DEFAULT_SERVICE_NAME "Service01"
195 /* we retransmit the SI info at this rate */
196 #define SDT_RETRANS_TIME 500
197 #define PAT_RETRANS_TIME 100
198 #define PCR_RETRANS_TIME 20
200 typedef struct MpegTSWriteStream
{
201 struct MpegTSService
*service
;
202 int pid
; /* stream associated pid */
205 int first_pts_check
; ///< first pts check needed
206 int prev_payload_key
;
211 AVFormatContext
*amux
;
215 static void mpegts_write_pat(AVFormatContext
*s
)
217 MpegTSWrite
*ts
= s
->priv_data
;
218 MpegTSService
*service
;
219 uint8_t data
[SECTION_LENGTH
], *q
;
223 for (i
= 0; i
< ts
->nb_services
; i
++) {
224 service
= ts
->services
[i
];
225 put16(&q
, service
->sid
);
226 put16(&q
, 0xe000 | service
->pmt
.pid
);
228 mpegts_write_section1(&ts
->pat
, PAT_TID
, ts
->tsid
, ts
->tables_version
, 0, 0,
232 static int mpegts_write_pmt(AVFormatContext
*s
, MpegTSService
*service
)
234 MpegTSWrite
*ts
= s
->priv_data
;
235 uint8_t data
[SECTION_LENGTH
], *q
, *desc_length_ptr
, *program_info_length_ptr
;
236 int val
, stream_type
, i
, err
= 0;
239 put16(&q
, 0xe000 | service
->pcr_pid
);
241 program_info_length_ptr
= q
;
242 q
+= 2; /* patched after */
244 /* put program info here */
246 val
= 0xf000 | (q
- program_info_length_ptr
- 2);
247 program_info_length_ptr
[0] = val
>> 8;
248 program_info_length_ptr
[1] = val
;
250 for (i
= 0; i
< s
->nb_streams
; i
++) {
251 AVStream
*st
= s
->streams
[i
];
252 MpegTSWriteStream
*ts_st
= st
->priv_data
;
253 AVDictionaryEntry
*lang
= av_dict_get(st
->metadata
, "language", NULL
, 0);
255 if (q
- data
> SECTION_LENGTH
- 32) {
259 switch (st
->codec
->codec_id
) {
260 case AV_CODEC_ID_MPEG1VIDEO
:
261 case AV_CODEC_ID_MPEG2VIDEO
:
262 stream_type
= STREAM_TYPE_VIDEO_MPEG2
;
264 case AV_CODEC_ID_MPEG4
:
265 stream_type
= STREAM_TYPE_VIDEO_MPEG4
;
267 case AV_CODEC_ID_H264
:
268 stream_type
= STREAM_TYPE_VIDEO_H264
;
270 case AV_CODEC_ID_HEVC
:
271 stream_type
= STREAM_TYPE_VIDEO_HEVC
;
273 case AV_CODEC_ID_CAVS
:
274 stream_type
= STREAM_TYPE_VIDEO_CAVS
;
276 case AV_CODEC_ID_DIRAC
:
277 stream_type
= STREAM_TYPE_VIDEO_DIRAC
;
279 case AV_CODEC_ID_MP2
:
280 case AV_CODEC_ID_MP3
:
281 stream_type
= STREAM_TYPE_AUDIO_MPEG1
;
283 case AV_CODEC_ID_AAC
:
284 stream_type
= (ts
->flags
& MPEGTS_FLAG_AAC_LATM
)
285 ? STREAM_TYPE_AUDIO_AAC_LATM
286 : STREAM_TYPE_AUDIO_AAC
;
288 case AV_CODEC_ID_AAC_LATM
:
289 stream_type
= STREAM_TYPE_AUDIO_AAC_LATM
;
291 case AV_CODEC_ID_AC3
:
292 stream_type
= STREAM_TYPE_AUDIO_AC3
;
294 case AV_CODEC_ID_DTS
:
295 stream_type
= STREAM_TYPE_AUDIO_DTS
;
297 case AV_CODEC_ID_TRUEHD
:
298 stream_type
= STREAM_TYPE_AUDIO_TRUEHD
;
301 stream_type
= STREAM_TYPE_PRIVATE_DATA
;
306 put16(&q
, 0xe000 | ts_st
->pid
);
308 q
+= 2; /* patched after */
310 /* write optional descriptors here */
311 switch (st
->codec
->codec_type
) {
312 case AVMEDIA_TYPE_AUDIO
:
313 if (st
->codec
->codec_id
==AV_CODEC_ID_EAC3
) {
314 *q
++=0x7a; // EAC3 descriptor see A038 DVB SI
315 *q
++=1; // 1 byte, all flags sets to 0
316 *q
++=0; // omit all fields...
318 if (st
->codec
->codec_id
==AV_CODEC_ID_S302M
) {
319 *q
++ = 0x05; /* MPEG-2 registration descriptor*/
329 char *next
= lang
->value
;
332 *q
++ = 0x0a; /* ISO 639 language descriptor */
336 for (p
= lang
->value
; next
&& *len_ptr
< 255 / 4 * 4; p
= next
+ 1) {
337 if (q
- data
> SECTION_LENGTH
- 4) {
341 next
= strchr(p
, ',');
342 if (strlen(p
) != 3 && (!next
|| next
!= p
+ 3))
343 continue; /* not a 3-letter code */
349 if (st
->disposition
& AV_DISPOSITION_CLEAN_EFFECTS
)
351 else if (st
->disposition
& AV_DISPOSITION_HEARING_IMPAIRED
)
353 else if (st
->disposition
& AV_DISPOSITION_VISUAL_IMPAIRED
)
356 *q
++ = 0; /* undefined type */
362 q
-= 2; /* no language codes were written */
365 case AVMEDIA_TYPE_SUBTITLE
:
367 const char default_language
[] = "und";
368 const char *language
= lang
&& strlen(lang
->value
) >= 3 ? lang
->value
: default_language
;
370 if (st
->codec
->codec_id
== AV_CODEC_ID_DVB_SUBTITLE
) {
372 int extradata_copied
= 0;
374 *q
++ = 0x59; /* subtitling_descriptor */
377 while (strlen(language
) >= 3) {
378 if (sizeof(data
) - (q
- data
) < 8) { /* 8 bytes per DVB subtitle substream data */
386 if (*language
!= '\0')
389 if (st
->codec
->extradata_size
- extradata_copied
>= 5) {
390 *q
++ = st
->codec
->extradata
[extradata_copied
+ 4]; /* subtitling_type */
391 memcpy(q
, st
->codec
->extradata
+ extradata_copied
, 4); /* composition_page_id and ancillary_page_id */
392 extradata_copied
+= 5;
396 * 0x10 - normal with no monitor aspect ratio criticality
397 * 0x20 - for the hard of hearing with no monitor aspect ratio criticality */
398 *q
++ = (st
->disposition
& AV_DISPOSITION_HEARING_IMPAIRED
) ? 0x20 : 0x10;
399 if ((st
->codec
->extradata_size
== 4) && (extradata_copied
== 0)) {
400 /* support of old 4-byte extradata format */
401 memcpy(q
, st
->codec
->extradata
, 4); /* composition_page_id and ancillary_page_id */
402 extradata_copied
+= 4;
405 put16(&q
, 1); /* composition_page_id */
406 put16(&q
, 1); /* ancillary_page_id */
411 *len_ptr
= q
- len_ptr
- 1;
412 } else if (st
->codec
->codec_id
== AV_CODEC_ID_DVB_TELETEXT
) {
413 uint8_t *len_ptr
= NULL
;
414 int extradata_copied
= 0;
416 /* The descriptor tag. teletext_descriptor */
420 while (strlen(language
) >= 3 && q
- data
< sizeof(data
) - 6) {
425 if (*language
!= '\0')
428 if (st
->codec
->extradata_size
- 1 > extradata_copied
) {
429 memcpy(q
, st
->codec
->extradata
+ extradata_copied
, 2);
430 extradata_copied
+= 2;
433 /* The Teletext descriptor:
434 * teletext_type: This 5-bit field indicates the type of Teletext page indicated. (0x01 Initial Teletext page)
435 * teletext_magazine_number: This is a 3-bit field which identifies the magazine number.
436 * teletext_page_number: This is an 8-bit field giving two 4-bit hex digits identifying the page number. */
442 *len_ptr
= q
- len_ptr
- 1;
446 case AVMEDIA_TYPE_VIDEO
:
447 if (stream_type
== STREAM_TYPE_VIDEO_DIRAC
) {
448 *q
++ = 0x05; /*MPEG-2 registration descriptor*/
456 case AVMEDIA_TYPE_DATA
:
457 if (st
->codec
->codec_id
== AV_CODEC_ID_SMPTE_KLV
) {
458 *q
++ = 0x05; /* MPEG-2 registration descriptor */
468 val
= 0xf000 | (q
- desc_length_ptr
- 2);
469 desc_length_ptr
[0] = val
>> 8;
470 desc_length_ptr
[1] = val
;
474 av_log(s
, AV_LOG_ERROR
,
475 "The PMT section cannot fit stream %d and all following streams.\n"
476 "Try reducing the number of languages in the audio streams "
477 "or the total number of streams.\n", i
);
479 mpegts_write_section1(&service
->pmt
, PMT_TID
, service
->sid
, ts
->tables_version
, 0, 0,
484 /* NOTE: !str is accepted for an empty string */
485 static void putstr8(uint8_t **q_ptr
, const char *str
)
501 static void mpegts_write_sdt(AVFormatContext
*s
)
503 MpegTSWrite
*ts
= s
->priv_data
;
504 MpegTSService
*service
;
505 uint8_t data
[SECTION_LENGTH
], *q
, *desc_list_len_ptr
, *desc_len_ptr
;
506 int i
, running_status
, free_ca_mode
, val
;
511 for (i
= 0; i
< ts
->nb_services
; i
++) {
512 service
= ts
->services
[i
];
513 put16(&q
, service
->sid
);
514 *q
++ = 0xfc | 0x00; /* currently no EIT info */
515 desc_list_len_ptr
= q
;
517 running_status
= 4; /* running */
520 /* write only one descriptor for the service name and provider */
524 *q
++ = 0x01; /* digital television service */
525 putstr8(&q
, service
->provider_name
);
526 putstr8(&q
, service
->name
);
527 desc_len_ptr
[0] = q
- desc_len_ptr
- 1;
529 /* fill descriptor length */
530 val
= (running_status
<< 13) | (free_ca_mode
<< 12) |
531 (q
- desc_list_len_ptr
- 2);
532 desc_list_len_ptr
[0] = val
>> 8;
533 desc_list_len_ptr
[1] = val
;
535 mpegts_write_section1(&ts
->sdt
, SDT_TID
, ts
->tsid
, ts
->tables_version
, 0, 0,
539 static MpegTSService
*mpegts_add_service(MpegTSWrite
*ts
, int sid
,
540 const char *provider_name
,
543 MpegTSService
*service
;
545 service
= av_mallocz(sizeof(MpegTSService
));
548 service
->pmt
.pid
= ts
->pmt_start_pid
+ ts
->nb_services
;
550 service
->pcr_pid
= 0x1fff;
551 service
->provider_name
= av_strdup(provider_name
);
552 service
->name
= av_strdup(name
);
553 if (!service
->provider_name
|| !service
->name
)
555 if (av_dynarray_add_nofree(&ts
->services
, &ts
->nb_services
, service
) < 0)
560 av_freep(&service
->provider_name
);
561 av_freep(&service
->name
);
566 static int64_t get_pcr(const MpegTSWrite
*ts
, AVIOContext
*pb
)
568 return av_rescale(avio_tell(pb
) + 11, 8 * PCR_TIME_BASE
, ts
->mux_rate
) +
572 static void mpegts_prefix_m2ts_header(AVFormatContext
*s
)
574 MpegTSWrite
*ts
= s
->priv_data
;
576 int64_t pcr
= get_pcr(s
->priv_data
, s
->pb
);
577 uint32_t tp_extra_header
= pcr
% 0x3fffffff;
578 tp_extra_header
= AV_RB32(&tp_extra_header
);
579 avio_write(s
->pb
, (unsigned char *) &tp_extra_header
,
580 sizeof(tp_extra_header
));
584 static void section_write_packet(MpegTSSection
*s
, const uint8_t *packet
)
586 AVFormatContext
*ctx
= s
->opaque
;
587 mpegts_prefix_m2ts_header(ctx
);
588 avio_write(ctx
->pb
, packet
, TS_PACKET_SIZE
);
591 static int mpegts_write_header(AVFormatContext
*s
)
593 MpegTSWrite
*ts
= s
->priv_data
;
594 MpegTSWriteStream
*ts_st
;
595 MpegTSService
*service
;
596 AVStream
*st
, *pcr_st
= NULL
;
597 AVDictionaryEntry
*title
, *provider
;
599 const char *service_name
;
600 const char *provider_name
;
604 if (s
->max_delay
< 0) /* Not set by the caller */
607 // round up to a whole number of TS packets
608 ts
->pes_payload_size
= (ts
->pes_payload_size
+ 14 + 183) / 184 * 184 - 14;
610 ts
->tsid
= ts
->transport_stream_id
;
611 ts
->onid
= ts
->original_network_id
;
612 /* allocate a single DVB service */
613 title
= av_dict_get(s
->metadata
, "service_name", NULL
, 0);
615 title
= av_dict_get(s
->metadata
, "title", NULL
, 0);
616 service_name
= title
? title
->value
: DEFAULT_SERVICE_NAME
;
617 provider
= av_dict_get(s
->metadata
, "service_provider", NULL
, 0);
618 provider_name
= provider
? provider
->value
: DEFAULT_PROVIDER_NAME
;
619 service
= mpegts_add_service(ts
, ts
->service_id
,
620 provider_name
, service_name
);
623 return AVERROR(ENOMEM
);
625 service
->pmt
.write_packet
= section_write_packet
;
626 service
->pmt
.opaque
= s
;
627 service
->pmt
.cc
= 15;
629 ts
->pat
.pid
= PAT_PID
;
630 /* Initialize at 15 so that it wraps and is equal to 0 for the
631 * first packet we write. */
633 ts
->pat
.write_packet
= section_write_packet
;
636 ts
->sdt
.pid
= SDT_PID
;
638 ts
->sdt
.write_packet
= section_write_packet
;
641 pids
= av_malloc_array(s
->nb_streams
, sizeof(*pids
));
643 ret
= AVERROR(ENOMEM
);
647 /* assign pids to each stream */
648 for (i
= 0; i
< s
->nb_streams
; i
++) {
651 ts_st
= av_mallocz(sizeof(MpegTSWriteStream
));
653 ret
= AVERROR(ENOMEM
);
656 st
->priv_data
= ts_st
;
658 ts_st
->user_tb
= st
->time_base
;
659 avpriv_set_pts_info(st
, 33, 1, 90000);
661 ts_st
->payload
= av_mallocz(ts
->pes_payload_size
);
662 if (!ts_st
->payload
) {
663 ret
= AVERROR(ENOMEM
);
666 ts_st
->service
= service
;
667 /* MPEG pid values < 16 are reserved. Applications which set st->id in
668 * this range are assigned a calculated pid. */
670 ts_st
->pid
= ts
->start_pid
+ i
;
671 } else if (st
->id
< 0x1FFF) {
674 av_log(s
, AV_LOG_ERROR
,
675 "Invalid stream id %d, must be less than 8191\n", st
->id
);
676 ret
= AVERROR(EINVAL
);
679 if (ts_st
->pid
== service
->pmt
.pid
) {
680 av_log(s
, AV_LOG_ERROR
, "Duplicate stream id %d\n", ts_st
->pid
);
681 ret
= AVERROR(EINVAL
);
684 for (j
= 0; j
< i
; j
++) {
685 if (pids
[j
] == ts_st
->pid
) {
686 av_log(s
, AV_LOG_ERROR
, "Duplicate stream id %d\n", ts_st
->pid
);
687 ret
= AVERROR(EINVAL
);
691 pids
[i
] = ts_st
->pid
;
692 ts_st
->payload_pts
= AV_NOPTS_VALUE
;
693 ts_st
->payload_dts
= AV_NOPTS_VALUE
;
694 ts_st
->first_pts_check
= 1;
696 /* update PCR pid by using the first video stream */
697 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&&
698 service
->pcr_pid
== 0x1fff) {
699 service
->pcr_pid
= ts_st
->pid
;
702 if (st
->codec
->codec_id
== AV_CODEC_ID_AAC
&&
703 st
->codec
->extradata_size
> 0) {
705 ts_st
->amux
= avformat_alloc_context();
707 ret
= AVERROR(ENOMEM
);
710 ts_st
->amux
->oformat
=
711 av_guess_format((ts
->flags
& MPEGTS_FLAG_AAC_LATM
) ? "latm" : "adts",
713 if (!ts_st
->amux
->oformat
) {
714 ret
= AVERROR(EINVAL
);
717 if (!(ast
= avformat_new_stream(ts_st
->amux
, NULL
))) {
718 ret
= AVERROR(ENOMEM
);
721 ret
= avcodec_copy_context(ast
->codec
, st
->codec
);
724 ast
->time_base
= st
->time_base
;
725 ret
= avformat_write_header(ts_st
->amux
, NULL
);
733 /* if no video stream, use the first stream as PCR */
734 if (service
->pcr_pid
== 0x1fff && s
->nb_streams
> 0) {
735 pcr_st
= s
->streams
[0];
736 ts_st
= pcr_st
->priv_data
;
737 service
->pcr_pid
= ts_st
->pid
;
739 ts_st
= pcr_st
->priv_data
;
741 if (ts
->mux_rate
> 1) {
742 service
->pcr_packet_period
= (ts
->mux_rate
* ts
->pcr_period
) /
743 (TS_PACKET_SIZE
* 8 * 1000);
744 ts
->sdt_packet_period
= (ts
->mux_rate
* SDT_RETRANS_TIME
) /
745 (TS_PACKET_SIZE
* 8 * 1000);
746 ts
->pat_packet_period
= (ts
->mux_rate
* PAT_RETRANS_TIME
) /
747 (TS_PACKET_SIZE
* 8 * 1000);
750 ts
->first_pcr
= av_rescale(s
->max_delay
, PCR_TIME_BASE
, AV_TIME_BASE
);
752 /* Arbitrary values, PAT/PMT will also be written on video key frames */
753 ts
->sdt_packet_period
= 200;
754 ts
->pat_packet_period
= 40;
755 if (pcr_st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) {
756 if (!pcr_st
->codec
->frame_size
) {
757 av_log(s
, AV_LOG_WARNING
, "frame size not set\n");
758 service
->pcr_packet_period
=
759 pcr_st
->codec
->sample_rate
/ (10 * 512);
761 service
->pcr_packet_period
=
762 pcr_st
->codec
->sample_rate
/ (10 * pcr_st
->codec
->frame_size
);
765 // max delta PCR 0.1s
766 // TODO: should be avg_frame_rate
767 service
->pcr_packet_period
=
768 ts_st
->user_tb
.den
/ (10 * ts_st
->user_tb
.num
);
770 if (!service
->pcr_packet_period
)
771 service
->pcr_packet_period
= 1;
774 // output a PCR as soon as possible
775 service
->pcr_packet_count
= service
->pcr_packet_period
;
776 ts
->pat_packet_count
= ts
->pat_packet_period
- 1;
777 ts
->sdt_packet_count
= ts
->sdt_packet_period
- 1;
779 if (ts
->mux_rate
== 1)
780 av_log(s
, AV_LOG_VERBOSE
, "muxrate VBR, ");
782 av_log(s
, AV_LOG_VERBOSE
, "muxrate %d, ", ts
->mux_rate
);
783 av_log(s
, AV_LOG_VERBOSE
,
784 "pcr every %d pkts, sdt every %d, pat/pmt every %d pkts\n",
785 service
->pcr_packet_period
,
786 ts
->sdt_packet_period
, ts
->pat_packet_period
);
788 if (ts
->m2ts_mode
== -1) {
789 if (av_match_ext(s
->filename
, "m2ts")) {
800 for (i
= 0; i
< s
->nb_streams
; i
++) {
802 ts_st
= st
->priv_data
;
804 av_freep(&ts_st
->payload
);
806 avformat_free_context(ts_st
->amux
);
810 av_freep(&st
->priv_data
);
813 for (i
= 0; i
< ts
->nb_services
; i
++) {
814 service
= ts
->services
[i
];
815 av_freep(&service
->provider_name
);
816 av_freep(&service
->name
);
819 av_free(ts
->services
);
823 /* send SDT, PAT and PMT tables regulary */
824 static void retransmit_si_info(AVFormatContext
*s
, int force_pat
)
826 MpegTSWrite
*ts
= s
->priv_data
;
829 if (++ts
->sdt_packet_count
== ts
->sdt_packet_period
) {
830 ts
->sdt_packet_count
= 0;
833 if (++ts
->pat_packet_count
== ts
->pat_packet_period
|| force_pat
) {
834 ts
->pat_packet_count
= 0;
836 for (i
= 0; i
< ts
->nb_services
; i
++)
837 mpegts_write_pmt(s
, ts
->services
[i
]);
841 static int write_pcr_bits(uint8_t *buf
, int64_t pcr
)
843 int64_t pcr_low
= pcr
% 300, pcr_high
= pcr
/ 300;
845 *buf
++ = pcr_high
>> 25;
846 *buf
++ = pcr_high
>> 17;
847 *buf
++ = pcr_high
>> 9;
848 *buf
++ = pcr_high
>> 1;
849 *buf
++ = pcr_high
<< 7 | pcr_low
>> 8 | 0x7e;
855 /* Write a single null transport stream packet */
856 static void mpegts_insert_null_packet(AVFormatContext
*s
)
859 uint8_t buf
[TS_PACKET_SIZE
];
866 memset(q
, 0x0FF, TS_PACKET_SIZE
- (q
- buf
));
867 mpegts_prefix_m2ts_header(s
);
868 avio_write(s
->pb
, buf
, TS_PACKET_SIZE
);
871 /* Write a single transport stream packet with a PCR and no payload */
872 static void mpegts_insert_pcr_only(AVFormatContext
*s
, AVStream
*st
)
874 MpegTSWrite
*ts
= s
->priv_data
;
875 MpegTSWriteStream
*ts_st
= st
->priv_data
;
877 uint8_t buf
[TS_PACKET_SIZE
];
881 *q
++ = ts_st
->pid
>> 8;
883 *q
++ = 0x20 | ts_st
->cc
; /* Adaptation only */
884 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
885 *q
++ = TS_PACKET_SIZE
- 5; /* Adaptation Field Length */
886 *q
++ = 0x10; /* Adaptation flags: PCR present */
888 /* PCR coded into 6 bytes */
889 q
+= write_pcr_bits(q
, get_pcr(ts
, s
->pb
));
892 memset(q
, 0xFF, TS_PACKET_SIZE
- (q
- buf
));
893 mpegts_prefix_m2ts_header(s
);
894 avio_write(s
->pb
, buf
, TS_PACKET_SIZE
);
897 static void write_pts(uint8_t *q
, int fourbits
, int64_t pts
)
901 val
= fourbits
<< 4 | (((pts
>> 30) & 0x07) << 1) | 1;
903 val
= (((pts
>> 15) & 0x7fff) << 1) | 1;
906 val
= (((pts
) & 0x7fff) << 1) | 1;
911 /* Set an adaptation field flag in an MPEG-TS packet*/
912 static void set_af_flag(uint8_t *pkt
, int flag
)
914 // expect at least one flag to set
917 if ((pkt
[3] & 0x20) == 0) {
918 // no AF yet, set adaptation field flag
920 // 1 byte length, no flags
927 /* Extend the adaptation field by size bytes */
928 static void extend_af(uint8_t *pkt
, int size
)
930 // expect already existing adaptation field
931 av_assert0(pkt
[3] & 0x20);
935 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
936 static uint8_t *get_ts_payload_start(uint8_t *pkt
)
939 return pkt
+ 5 + pkt
[4];
944 /* Add a PES header to the front of the payload, and segment into an integer
945 * number of TS packets. The final TS packet is padded using an oversized
946 * adaptation header to exactly fill the last TS packet.
947 * NOTE: 'payload' contains a complete PES payload. */
948 static void mpegts_write_pes(AVFormatContext
*s
, AVStream
*st
,
949 const uint8_t *payload
, int payload_size
,
950 int64_t pts
, int64_t dts
, int key
)
952 MpegTSWriteStream
*ts_st
= st
->priv_data
;
953 MpegTSWrite
*ts
= s
->priv_data
;
954 uint8_t buf
[TS_PACKET_SIZE
];
956 int val
, is_start
, len
, header_len
, write_pcr
, is_dvb_subtitle
, is_dvb_teletext
, flags
;
957 int afc_len
, stuffing_len
;
958 int64_t pcr
= -1; /* avoid warning */
959 int64_t delay
= av_rescale(s
->max_delay
, 90000, AV_TIME_BASE
);
960 int force_pat
= st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&& key
&& !ts_st
->prev_payload_key
;
963 while (payload_size
> 0) {
964 retransmit_si_info(s
, force_pat
);
968 if (ts_st
->pid
== ts_st
->service
->pcr_pid
) {
969 if (ts
->mux_rate
> 1 || is_start
) // VBR pcr period is based on frames
970 ts_st
->service
->pcr_packet_count
++;
971 if (ts_st
->service
->pcr_packet_count
>=
972 ts_st
->service
->pcr_packet_period
) {
973 ts_st
->service
->pcr_packet_count
= 0;
978 if (ts
->mux_rate
> 1 && dts
!= AV_NOPTS_VALUE
&&
979 (dts
- get_pcr(ts
, s
->pb
) / 300) > delay
) {
980 /* pcr insert gets priority over null packet insert */
982 mpegts_insert_pcr_only(s
, st
);
984 mpegts_insert_null_packet(s
);
985 /* recalculate write_pcr and possibly retransmit si_info */
989 /* prepare packet header */
992 val
= ts_st
->pid
>> 8;
997 ts_st
->cc
= ts_st
->cc
+ 1 & 0xf;
998 *q
++ = 0x10 | ts_st
->cc
; // payload indicator + CC
999 if (key
&& is_start
&& pts
!= AV_NOPTS_VALUE
) {
1000 // set Random Access for key frames
1001 if (ts_st
->pid
== ts_st
->service
->pcr_pid
)
1003 set_af_flag(buf
, 0x40);
1004 q
= get_ts_payload_start(buf
);
1007 set_af_flag(buf
, 0x10);
1008 q
= get_ts_payload_start(buf
);
1009 // add 11, pcr references the last byte of program clock reference base
1010 if (ts
->mux_rate
> 1)
1011 pcr
= get_pcr(ts
, s
->pb
);
1013 pcr
= (dts
- delay
) * 300;
1014 if (dts
!= AV_NOPTS_VALUE
&& dts
< pcr
/ 300)
1015 av_log(s
, AV_LOG_WARNING
, "dts < pcr, TS is invalid\n");
1016 extend_af(buf
, write_pcr_bits(q
, pcr
));
1017 q
= get_ts_payload_start(buf
);
1020 int pes_extension
= 0;
1021 int pes_header_stuffing_bytes
= 0;
1022 /* write PES header */
1026 is_dvb_subtitle
= 0;
1027 is_dvb_teletext
= 0;
1028 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
) {
1029 if (st
->codec
->codec_id
== AV_CODEC_ID_DIRAC
)
1033 } else if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
&&
1034 (st
->codec
->codec_id
== AV_CODEC_ID_MP2
||
1035 st
->codec
->codec_id
== AV_CODEC_ID_MP3
||
1036 st
->codec
->codec_id
== AV_CODEC_ID_AAC
)) {
1038 } else if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
&&
1039 st
->codec
->codec_id
== AV_CODEC_ID_AC3
&&
1044 if (st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
) {
1045 if (st
->codec
->codec_id
== AV_CODEC_ID_DVB_SUBTITLE
) {
1046 is_dvb_subtitle
= 1;
1047 } else if (st
->codec
->codec_id
== AV_CODEC_ID_DVB_TELETEXT
) {
1048 is_dvb_teletext
= 1;
1054 if (pts
!= AV_NOPTS_VALUE
) {
1058 if (dts
!= AV_NOPTS_VALUE
&& pts
!= AV_NOPTS_VALUE
&& dts
!= pts
) {
1062 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&&
1063 st
->codec
->codec_id
== AV_CODEC_ID_DIRAC
) {
1064 /* set PES_extension_flag */
1068 /* One byte for PES2 extension flag +
1069 * one byte for extension length +
1070 * one byte for extension id */
1073 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1074 * otherwise it will not play sound on blu-ray
1076 if (ts
->m2ts_mode
&&
1077 st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
&&
1078 st
->codec
->codec_id
== AV_CODEC_ID_AC3
) {
1079 /* set PES_extension_flag */
1084 if (is_dvb_teletext
) {
1085 pes_header_stuffing_bytes
= 0x24 - header_len
;
1088 len
= payload_size
+ header_len
+ 3;
1089 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1090 if (is_dvb_subtitle
) {
1096 if (ts
->omit_video_pes_length
&& st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
) {
1102 /* data alignment indicator is required for subtitle and data streams */
1103 if (st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
|| st
->codec
->codec_type
== AVMEDIA_TYPE_DATA
)
1108 if (pts
!= AV_NOPTS_VALUE
) {
1109 write_pts(q
, flags
>> 6, pts
);
1112 if (dts
!= AV_NOPTS_VALUE
&& pts
!= AV_NOPTS_VALUE
&& dts
!= pts
) {
1113 write_pts(q
, 1, dts
);
1116 if (pes_extension
&& st
->codec
->codec_id
== AV_CODEC_ID_DIRAC
) {
1117 flags
= 0x01; /* set PES_extension_flag_2 */
1119 *q
++ = 0x80 | 0x01; /* marker bit + extension length */
1120 /* Set the stream ID extension flag bit to 0 and
1121 * write the extended stream ID. */
1124 /* For Blu-ray AC3 Audio Setting extended flags */
1125 if (ts
->m2ts_mode
&&
1127 st
->codec
->codec_id
== AV_CODEC_ID_AC3
) {
1128 flags
= 0x01; /* set PES_extension_flag_2 */
1130 *q
++ = 0x80 | 0x01; /* marker bit + extension length */
1131 *q
++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1135 if (is_dvb_subtitle
) {
1136 /* First two fields of DVB subtitles PES data:
1137 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1138 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1142 if (is_dvb_teletext
) {
1143 memset(q
, 0xff, pes_header_stuffing_bytes
);
1144 q
+= pes_header_stuffing_bytes
;
1149 header_len
= q
- buf
;
1151 len
= TS_PACKET_SIZE
- header_len
;
1152 if (len
> payload_size
)
1154 stuffing_len
= TS_PACKET_SIZE
- header_len
- len
;
1155 if (stuffing_len
> 0) {
1156 /* add stuffing with AFC */
1157 if (buf
[3] & 0x20) {
1158 /* stuffing already present: increase its size */
1159 afc_len
= buf
[4] + 1;
1160 memmove(buf
+ 4 + afc_len
+ stuffing_len
,
1162 header_len
- (4 + afc_len
));
1163 buf
[4] += stuffing_len
;
1164 memset(buf
+ 4 + afc_len
, 0xff, stuffing_len
);
1167 memmove(buf
+ 4 + stuffing_len
, buf
+ 4, header_len
- 4);
1169 buf
[4] = stuffing_len
- 1;
1170 if (stuffing_len
>= 2) {
1172 memset(buf
+ 6, 0xff, stuffing_len
- 2);
1177 if (is_dvb_subtitle
&& payload_size
== len
) {
1178 memcpy(buf
+ TS_PACKET_SIZE
- len
, payload
, len
- 1);
1179 buf
[TS_PACKET_SIZE
- 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1181 memcpy(buf
+ TS_PACKET_SIZE
- len
, payload
, len
);
1185 payload_size
-= len
;
1186 mpegts_prefix_m2ts_header(s
);
1187 avio_write(s
->pb
, buf
, TS_PACKET_SIZE
);
1189 ts_st
->prev_payload_key
= key
;
1192 int ff_check_h264_startcode(AVFormatContext
*s
, const AVStream
*st
, const AVPacket
*pkt
)
1194 if (pkt
->size
< 5 || AV_RB32(pkt
->data
) != 0x0000001) {
1195 if (!st
->nb_frames
) {
1196 av_log(s
, AV_LOG_ERROR
, "H.264 bitstream malformed, "
1197 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1198 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1199 return AVERROR_INVALIDDATA
;
1201 av_log(s
, AV_LOG_WARNING
, "H.264 bitstream error, startcode missing, size %d", pkt
->size
);
1202 if (pkt
->size
) av_log(s
, AV_LOG_WARNING
, " data %08X", AV_RB32(pkt
->data
));
1203 av_log(s
, AV_LOG_WARNING
, "\n");
1208 static int check_hevc_startcode(AVFormatContext
*s
, const AVStream
*st
, const AVPacket
*pkt
)
1210 if (pkt
->size
< 5 || AV_RB32(pkt
->data
) != 0x0000001) {
1211 if (!st
->nb_frames
) {
1212 av_log(s
, AV_LOG_ERROR
, "HEVC bitstream malformed, no startcode found\n");
1213 return AVERROR_PATCHWELCOME
;
1215 av_log(s
, AV_LOG_WARNING
, "HEVC bitstream error, startcode missing, size %d", pkt
->size
);
1216 if (pkt
->size
) av_log(s
, AV_LOG_WARNING
, " data %08X", AV_RB32(pkt
->data
));
1217 av_log(s
, AV_LOG_WARNING
, "\n");
1222 static int mpegts_write_packet_internal(AVFormatContext
*s
, AVPacket
*pkt
)
1224 AVStream
*st
= s
->streams
[pkt
->stream_index
];
1225 int size
= pkt
->size
;
1226 uint8_t *buf
= pkt
->data
;
1227 uint8_t *data
= NULL
;
1228 MpegTSWrite
*ts
= s
->priv_data
;
1229 MpegTSWriteStream
*ts_st
= st
->priv_data
;
1230 const int64_t delay
= av_rescale(s
->max_delay
, 90000, AV_TIME_BASE
) * 2;
1231 int64_t dts
= pkt
->dts
, pts
= pkt
->pts
;
1233 if (ts
->reemit_pat_pmt
) {
1234 av_log(s
, AV_LOG_WARNING
,
1235 "resend_headers option is deprecated, use -mpegts_flags resend_headers\n");
1236 ts
->reemit_pat_pmt
= 0;
1237 ts
->flags
|= MPEGTS_FLAG_REEMIT_PAT_PMT
;
1240 if (ts
->flags
& MPEGTS_FLAG_REEMIT_PAT_PMT
) {
1241 ts
->pat_packet_count
= ts
->pat_packet_period
- 1;
1242 ts
->sdt_packet_count
= ts
->sdt_packet_period
- 1;
1243 ts
->flags
&= ~MPEGTS_FLAG_REEMIT_PAT_PMT
;
1246 if (ts
->copyts
< 1) {
1247 if (pts
!= AV_NOPTS_VALUE
)
1249 if (dts
!= AV_NOPTS_VALUE
)
1253 if (ts_st
->first_pts_check
&& pts
== AV_NOPTS_VALUE
) {
1254 av_log(s
, AV_LOG_ERROR
, "first pts value must be set\n");
1255 return AVERROR_INVALIDDATA
;
1257 ts_st
->first_pts_check
= 0;
1259 if (st
->codec
->codec_id
== AV_CODEC_ID_H264
) {
1260 const uint8_t *p
= buf
, *buf_end
= p
+ size
;
1261 uint32_t state
= -1;
1262 int ret
= ff_check_h264_startcode(s
, st
, pkt
);
1267 p
= avpriv_find_start_code(p
, buf_end
, &state
);
1268 av_dlog(s
, "nal %d\n", state
& 0x1f);
1269 } while (p
< buf_end
&& (state
& 0x1f) != 9 &&
1270 (state
& 0x1f) != 5 && (state
& 0x1f) != 1);
1272 if ((state
& 0x1f) != 9) { // AUD NAL
1273 data
= av_malloc(pkt
->size
+ 6);
1275 return AVERROR(ENOMEM
);
1276 memcpy(data
+ 6, pkt
->data
, pkt
->size
);
1277 AV_WB32(data
, 0x00000001);
1279 data
[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1281 size
= pkt
->size
+ 6;
1283 } else if (st
->codec
->codec_id
== AV_CODEC_ID_AAC
) {
1284 if (pkt
->size
< 2) {
1285 av_log(s
, AV_LOG_ERROR
, "AAC packet too short\n");
1286 return AVERROR_INVALIDDATA
;
1288 if ((AV_RB16(pkt
->data
) & 0xfff0) != 0xfff0) {
1293 av_log(s
, AV_LOG_ERROR
, "AAC bitstream not in ADTS format "
1294 "and extradata missing\n");
1295 return AVERROR_INVALIDDATA
;
1298 av_init_packet(&pkt2
);
1299 pkt2
.data
= pkt
->data
;
1300 pkt2
.size
= pkt
->size
;
1301 av_assert0(pkt
->dts
!= AV_NOPTS_VALUE
);
1302 pkt2
.dts
= av_rescale_q(pkt
->dts
, st
->time_base
, ts_st
->amux
->streams
[0]->time_base
);
1304 ret
= avio_open_dyn_buf(&ts_st
->amux
->pb
);
1306 return AVERROR(ENOMEM
);
1308 ret
= av_write_frame(ts_st
->amux
, &pkt2
);
1310 avio_close_dyn_buf(ts_st
->amux
->pb
, &data
);
1311 ts_st
->amux
->pb
= NULL
;
1315 size
= avio_close_dyn_buf(ts_st
->amux
->pb
, &data
);
1316 ts_st
->amux
->pb
= NULL
;
1319 } else if (st
->codec
->codec_id
== AV_CODEC_ID_HEVC
) {
1320 int ret
= check_hevc_startcode(s
, st
, pkt
);
1325 if (pkt
->dts
!= AV_NOPTS_VALUE
) {
1327 for(i
=0; i
<s
->nb_streams
; i
++) {
1328 AVStream
*st2
= s
->streams
[i
];
1329 MpegTSWriteStream
*ts_st2
= st2
->priv_data
;
1330 if ( ts_st2
->payload_size
1331 && (ts_st2
->payload_dts
== AV_NOPTS_VALUE
|| dts
- ts_st2
->payload_dts
> delay
/2)) {
1332 mpegts_write_pes(s
, st2
, ts_st2
->payload
, ts_st2
->payload_size
,
1333 ts_st2
->payload_pts
, ts_st2
->payload_dts
,
1334 ts_st2
->payload_flags
& AV_PKT_FLAG_KEY
);
1335 ts_st2
->payload_size
= 0;
1340 if (ts_st
->payload_size
&& ts_st
->payload_size
+ size
> ts
->pes_payload_size
) {
1341 mpegts_write_pes(s
, st
, ts_st
->payload
, ts_st
->payload_size
,
1342 ts_st
->payload_pts
, ts_st
->payload_dts
,
1343 ts_st
->payload_flags
& AV_PKT_FLAG_KEY
);
1344 ts_st
->payload_size
= 0;
1347 if (st
->codec
->codec_type
!= AVMEDIA_TYPE_AUDIO
|| size
> ts
->pes_payload_size
) {
1348 av_assert0(!ts_st
->payload_size
);
1349 // for video and subtitle, write a single pes packet
1350 mpegts_write_pes(s
, st
, buf
, size
, pts
, dts
,
1351 pkt
->flags
& AV_PKT_FLAG_KEY
);
1356 if (!ts_st
->payload_size
) {
1357 ts_st
->payload_pts
= pts
;
1358 ts_st
->payload_dts
= dts
;
1359 ts_st
->payload_flags
= pkt
->flags
;
1362 memcpy(ts_st
->payload
+ ts_st
->payload_size
, buf
, size
);
1363 ts_st
->payload_size
+= size
;
1370 static void mpegts_write_flush(AVFormatContext
*s
)
1374 /* flush current packets */
1375 for (i
= 0; i
< s
->nb_streams
; i
++) {
1376 AVStream
*st
= s
->streams
[i
];
1377 MpegTSWriteStream
*ts_st
= st
->priv_data
;
1378 if (ts_st
->payload_size
> 0) {
1379 mpegts_write_pes(s
, st
, ts_st
->payload
, ts_st
->payload_size
,
1380 ts_st
->payload_pts
, ts_st
->payload_dts
,
1381 ts_st
->payload_flags
& AV_PKT_FLAG_KEY
);
1382 ts_st
->payload_size
= 0;
1387 static int mpegts_write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
1390 mpegts_write_flush(s
);
1393 return mpegts_write_packet_internal(s
, pkt
);
1397 static int mpegts_write_end(AVFormatContext
*s
)
1399 MpegTSWrite
*ts
= s
->priv_data
;
1400 MpegTSService
*service
;
1403 mpegts_write_flush(s
);
1405 for (i
= 0; i
< s
->nb_streams
; i
++) {
1406 AVStream
*st
= s
->streams
[i
];
1407 MpegTSWriteStream
*ts_st
= st
->priv_data
;
1408 av_freep(&ts_st
->payload
);
1410 avformat_free_context(ts_st
->amux
);
1415 for (i
= 0; i
< ts
->nb_services
; i
++) {
1416 service
= ts
->services
[i
];
1417 av_freep(&service
->provider_name
);
1418 av_freep(&service
->name
);
1421 av_free(ts
->services
);
1426 static const AVOption options
[] = {
1427 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
1428 offsetof(MpegTSWrite
, transport_stream_id
), AV_OPT_TYPE_INT
,
1429 { .i64
= 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM
},
1430 { "mpegts_original_network_id", "Set original_network_id field.",
1431 offsetof(MpegTSWrite
, original_network_id
), AV_OPT_TYPE_INT
,
1432 { .i64
= 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM
},
1433 { "mpegts_service_id", "Set service_id field.",
1434 offsetof(MpegTSWrite
, service_id
), AV_OPT_TYPE_INT
,
1435 { .i64
= 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM
},
1436 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
1437 offsetof(MpegTSWrite
, pmt_start_pid
), AV_OPT_TYPE_INT
,
1438 { .i64
= 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM
},
1439 { "mpegts_start_pid", "Set the first pid.",
1440 offsetof(MpegTSWrite
, start_pid
), AV_OPT_TYPE_INT
,
1441 { .i64
= 0x0100 }, 0x0020, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM
},
1442 { "mpegts_m2ts_mode", "Enable m2ts mode.",
1443 offsetof(MpegTSWrite
, m2ts_mode
), AV_OPT_TYPE_INT
,
1444 { .i64
= -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM
},
1446 offsetof(MpegTSWrite
, mux_rate
), AV_OPT_TYPE_INT
,
1447 { .i64
= 1 }, 0, INT_MAX
, AV_OPT_FLAG_ENCODING_PARAM
},
1448 { "pes_payload_size", "Minimum PES packet payload in bytes",
1449 offsetof(MpegTSWrite
, pes_payload_size
), AV_OPT_TYPE_INT
,
1450 { .i64
= DEFAULT_PES_PAYLOAD_SIZE
}, 0, INT_MAX
, AV_OPT_FLAG_ENCODING_PARAM
},
1451 { "mpegts_flags", "MPEG-TS muxing flags",
1452 offsetof(MpegTSWrite
, flags
), AV_OPT_TYPE_FLAGS
, { .i64
= 0 }, 0, INT_MAX
,
1453 AV_OPT_FLAG_ENCODING_PARAM
, "mpegts_flags" },
1454 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1455 0, AV_OPT_TYPE_CONST
, { .i64
= MPEGTS_FLAG_REEMIT_PAT_PMT
}, 0, INT_MAX
,
1456 AV_OPT_FLAG_ENCODING_PARAM
, "mpegts_flags" },
1457 { "latm", "Use LATM packetization for AAC",
1458 0, AV_OPT_TYPE_CONST
, { .i64
= MPEGTS_FLAG_AAC_LATM
}, 0, INT_MAX
,
1459 AV_OPT_FLAG_ENCODING_PARAM
, "mpegts_flags" },
1460 // backward compatibility
1461 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1462 offsetof(MpegTSWrite
, reemit_pat_pmt
), AV_OPT_TYPE_INT
,
1463 { .i64
= 0 }, 0, INT_MAX
, AV_OPT_FLAG_ENCODING_PARAM
},
1464 { "mpegts_copyts", "don't offset dts/pts",
1465 offsetof(MpegTSWrite
, copyts
), AV_OPT_TYPE_INT
,
1466 { .i64
= -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM
},
1467 { "tables_version", "set PAT, PMT and SDT version",
1468 offsetof(MpegTSWrite
, tables_version
), AV_OPT_TYPE_INT
,
1469 { .i64
= 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM
},
1470 { "omit_video_pes_length", "Omit the PES packet length for video packets",
1471 offsetof(MpegTSWrite
, omit_video_pes_length
), AV_OPT_TYPE_INT
,
1472 { .i64
= 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM
},
1473 { "pcr_period", "PCR retransmission time",
1474 offsetof(MpegTSWrite
, pcr_period
), AV_OPT_TYPE_INT
,
1475 { .i64
= PCR_RETRANS_TIME
}, 0, INT_MAX
, AV_OPT_FLAG_ENCODING_PARAM
},
1479 static const AVClass mpegts_muxer_class
= {
1480 .class_name
= "MPEGTS muxer",
1481 .item_name
= av_default_item_name
,
1483 .version
= LIBAVUTIL_VERSION_INT
,
1486 AVOutputFormat ff_mpegts_muxer
= {
1488 .long_name
= NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
1489 .mime_type
= "video/MP2T",
1490 .extensions
= "ts,m2t,m2ts,mts",
1491 .priv_data_size
= sizeof(MpegTSWrite
),
1492 .audio_codec
= AV_CODEC_ID_MP2
,
1493 .video_codec
= AV_CODEC_ID_MPEG2VIDEO
,
1494 .write_header
= mpegts_write_header
,
1495 .write_packet
= mpegts_write_packet
,
1496 .write_trailer
= mpegts_write_end
,
1497 .flags
= AVFMT_ALLOW_FLUSH
,
1498 .priv_class
= &mpegts_muxer_class
,