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 ret
= avformat_write_header(ts_st
->amux
, NULL
);
732 /* if no video stream, use the first stream as PCR */
733 if (service
->pcr_pid
== 0x1fff && s
->nb_streams
> 0) {
734 pcr_st
= s
->streams
[0];
735 ts_st
= pcr_st
->priv_data
;
736 service
->pcr_pid
= ts_st
->pid
;
738 ts_st
= pcr_st
->priv_data
;
740 if (ts
->mux_rate
> 1) {
741 service
->pcr_packet_period
= (ts
->mux_rate
* ts
->pcr_period
) /
742 (TS_PACKET_SIZE
* 8 * 1000);
743 ts
->sdt_packet_period
= (ts
->mux_rate
* SDT_RETRANS_TIME
) /
744 (TS_PACKET_SIZE
* 8 * 1000);
745 ts
->pat_packet_period
= (ts
->mux_rate
* PAT_RETRANS_TIME
) /
746 (TS_PACKET_SIZE
* 8 * 1000);
749 ts
->first_pcr
= av_rescale(s
->max_delay
, PCR_TIME_BASE
, AV_TIME_BASE
);
751 /* Arbitrary values, PAT/PMT will also be written on video key frames */
752 ts
->sdt_packet_period
= 200;
753 ts
->pat_packet_period
= 40;
754 if (pcr_st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
) {
755 if (!pcr_st
->codec
->frame_size
) {
756 av_log(s
, AV_LOG_WARNING
, "frame size not set\n");
757 service
->pcr_packet_period
=
758 pcr_st
->codec
->sample_rate
/ (10 * 512);
760 service
->pcr_packet_period
=
761 pcr_st
->codec
->sample_rate
/ (10 * pcr_st
->codec
->frame_size
);
764 // max delta PCR 0.1s
765 // TODO: should be avg_frame_rate
766 service
->pcr_packet_period
=
767 ts_st
->user_tb
.den
/ (10 * ts_st
->user_tb
.num
);
769 if (!service
->pcr_packet_period
)
770 service
->pcr_packet_period
= 1;
773 // output a PCR as soon as possible
774 service
->pcr_packet_count
= service
->pcr_packet_period
;
775 ts
->pat_packet_count
= ts
->pat_packet_period
- 1;
776 ts
->sdt_packet_count
= ts
->sdt_packet_period
- 1;
778 if (ts
->mux_rate
== 1)
779 av_log(s
, AV_LOG_VERBOSE
, "muxrate VBR, ");
781 av_log(s
, AV_LOG_VERBOSE
, "muxrate %d, ", ts
->mux_rate
);
782 av_log(s
, AV_LOG_VERBOSE
,
783 "pcr every %d pkts, sdt every %d, pat/pmt every %d pkts\n",
784 service
->pcr_packet_period
,
785 ts
->sdt_packet_period
, ts
->pat_packet_period
);
787 if (ts
->m2ts_mode
== -1) {
788 if (av_match_ext(s
->filename
, "m2ts")) {
799 for (i
= 0; i
< s
->nb_streams
; i
++) {
801 ts_st
= st
->priv_data
;
803 av_freep(&ts_st
->payload
);
805 avformat_free_context(ts_st
->amux
);
809 av_freep(&st
->priv_data
);
812 for (i
= 0; i
< ts
->nb_services
; i
++) {
813 service
= ts
->services
[i
];
814 av_freep(&service
->provider_name
);
815 av_freep(&service
->name
);
818 av_free(ts
->services
);
822 /* send SDT, PAT and PMT tables regulary */
823 static void retransmit_si_info(AVFormatContext
*s
, int force_pat
)
825 MpegTSWrite
*ts
= s
->priv_data
;
828 if (++ts
->sdt_packet_count
== ts
->sdt_packet_period
) {
829 ts
->sdt_packet_count
= 0;
832 if (++ts
->pat_packet_count
== ts
->pat_packet_period
|| force_pat
) {
833 ts
->pat_packet_count
= 0;
835 for (i
= 0; i
< ts
->nb_services
; i
++)
836 mpegts_write_pmt(s
, ts
->services
[i
]);
840 static int write_pcr_bits(uint8_t *buf
, int64_t pcr
)
842 int64_t pcr_low
= pcr
% 300, pcr_high
= pcr
/ 300;
844 *buf
++ = pcr_high
>> 25;
845 *buf
++ = pcr_high
>> 17;
846 *buf
++ = pcr_high
>> 9;
847 *buf
++ = pcr_high
>> 1;
848 *buf
++ = pcr_high
<< 7 | pcr_low
>> 8 | 0x7e;
854 /* Write a single null transport stream packet */
855 static void mpegts_insert_null_packet(AVFormatContext
*s
)
858 uint8_t buf
[TS_PACKET_SIZE
];
865 memset(q
, 0x0FF, TS_PACKET_SIZE
- (q
- buf
));
866 mpegts_prefix_m2ts_header(s
);
867 avio_write(s
->pb
, buf
, TS_PACKET_SIZE
);
870 /* Write a single transport stream packet with a PCR and no payload */
871 static void mpegts_insert_pcr_only(AVFormatContext
*s
, AVStream
*st
)
873 MpegTSWrite
*ts
= s
->priv_data
;
874 MpegTSWriteStream
*ts_st
= st
->priv_data
;
876 uint8_t buf
[TS_PACKET_SIZE
];
880 *q
++ = ts_st
->pid
>> 8;
882 *q
++ = 0x20 | ts_st
->cc
; /* Adaptation only */
883 /* Continuity Count field does not increment (see 13818-1 section 2.4.3.3) */
884 *q
++ = TS_PACKET_SIZE
- 5; /* Adaptation Field Length */
885 *q
++ = 0x10; /* Adaptation flags: PCR present */
887 /* PCR coded into 6 bytes */
888 q
+= write_pcr_bits(q
, get_pcr(ts
, s
->pb
));
891 memset(q
, 0xFF, TS_PACKET_SIZE
- (q
- buf
));
892 mpegts_prefix_m2ts_header(s
);
893 avio_write(s
->pb
, buf
, TS_PACKET_SIZE
);
896 static void write_pts(uint8_t *q
, int fourbits
, int64_t pts
)
900 val
= fourbits
<< 4 | (((pts
>> 30) & 0x07) << 1) | 1;
902 val
= (((pts
>> 15) & 0x7fff) << 1) | 1;
905 val
= (((pts
) & 0x7fff) << 1) | 1;
910 /* Set an adaptation field flag in an MPEG-TS packet*/
911 static void set_af_flag(uint8_t *pkt
, int flag
)
913 // expect at least one flag to set
916 if ((pkt
[3] & 0x20) == 0) {
917 // no AF yet, set adaptation field flag
919 // 1 byte length, no flags
926 /* Extend the adaptation field by size bytes */
927 static void extend_af(uint8_t *pkt
, int size
)
929 // expect already existing adaptation field
930 av_assert0(pkt
[3] & 0x20);
934 /* Get a pointer to MPEG-TS payload (right after TS packet header) */
935 static uint8_t *get_ts_payload_start(uint8_t *pkt
)
938 return pkt
+ 5 + pkt
[4];
943 /* Add a PES header to the front of the payload, and segment into an integer
944 * number of TS packets. The final TS packet is padded using an oversized
945 * adaptation header to exactly fill the last TS packet.
946 * NOTE: 'payload' contains a complete PES payload. */
947 static void mpegts_write_pes(AVFormatContext
*s
, AVStream
*st
,
948 const uint8_t *payload
, int payload_size
,
949 int64_t pts
, int64_t dts
, int key
)
951 MpegTSWriteStream
*ts_st
= st
->priv_data
;
952 MpegTSWrite
*ts
= s
->priv_data
;
953 uint8_t buf
[TS_PACKET_SIZE
];
955 int val
, is_start
, len
, header_len
, write_pcr
, is_dvb_subtitle
, is_dvb_teletext
, flags
;
956 int afc_len
, stuffing_len
;
957 int64_t pcr
= -1; /* avoid warning */
958 int64_t delay
= av_rescale(s
->max_delay
, 90000, AV_TIME_BASE
);
959 int force_pat
= st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&& key
&& !ts_st
->prev_payload_key
;
962 while (payload_size
> 0) {
963 retransmit_si_info(s
, force_pat
);
967 if (ts_st
->pid
== ts_st
->service
->pcr_pid
) {
968 if (ts
->mux_rate
> 1 || is_start
) // VBR pcr period is based on frames
969 ts_st
->service
->pcr_packet_count
++;
970 if (ts_st
->service
->pcr_packet_count
>=
971 ts_st
->service
->pcr_packet_period
) {
972 ts_st
->service
->pcr_packet_count
= 0;
977 if (ts
->mux_rate
> 1 && dts
!= AV_NOPTS_VALUE
&&
978 (dts
- get_pcr(ts
, s
->pb
) / 300) > delay
) {
979 /* pcr insert gets priority over null packet insert */
981 mpegts_insert_pcr_only(s
, st
);
983 mpegts_insert_null_packet(s
);
984 /* recalculate write_pcr and possibly retransmit si_info */
988 /* prepare packet header */
991 val
= ts_st
->pid
>> 8;
996 ts_st
->cc
= ts_st
->cc
+ 1 & 0xf;
997 *q
++ = 0x10 | ts_st
->cc
; // payload indicator + CC
998 if (key
&& is_start
&& pts
!= AV_NOPTS_VALUE
) {
999 // set Random Access for key frames
1000 if (ts_st
->pid
== ts_st
->service
->pcr_pid
)
1002 set_af_flag(buf
, 0x40);
1003 q
= get_ts_payload_start(buf
);
1006 set_af_flag(buf
, 0x10);
1007 q
= get_ts_payload_start(buf
);
1008 // add 11, pcr references the last byte of program clock reference base
1009 if (ts
->mux_rate
> 1)
1010 pcr
= get_pcr(ts
, s
->pb
);
1012 pcr
= (dts
- delay
) * 300;
1013 if (dts
!= AV_NOPTS_VALUE
&& dts
< pcr
/ 300)
1014 av_log(s
, AV_LOG_WARNING
, "dts < pcr, TS is invalid\n");
1015 extend_af(buf
, write_pcr_bits(q
, pcr
));
1016 q
= get_ts_payload_start(buf
);
1019 int pes_extension
= 0;
1020 int pes_header_stuffing_bytes
= 0;
1021 /* write PES header */
1025 is_dvb_subtitle
= 0;
1026 is_dvb_teletext
= 0;
1027 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
) {
1028 if (st
->codec
->codec_id
== AV_CODEC_ID_DIRAC
)
1032 } else if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
&&
1033 (st
->codec
->codec_id
== AV_CODEC_ID_MP2
||
1034 st
->codec
->codec_id
== AV_CODEC_ID_MP3
||
1035 st
->codec
->codec_id
== AV_CODEC_ID_AAC
)) {
1037 } else if (st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
&&
1038 st
->codec
->codec_id
== AV_CODEC_ID_AC3
&&
1043 if (st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
) {
1044 if (st
->codec
->codec_id
== AV_CODEC_ID_DVB_SUBTITLE
) {
1045 is_dvb_subtitle
= 1;
1046 } else if (st
->codec
->codec_id
== AV_CODEC_ID_DVB_TELETEXT
) {
1047 is_dvb_teletext
= 1;
1053 if (pts
!= AV_NOPTS_VALUE
) {
1057 if (dts
!= AV_NOPTS_VALUE
&& pts
!= AV_NOPTS_VALUE
&& dts
!= pts
) {
1061 if (st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
&&
1062 st
->codec
->codec_id
== AV_CODEC_ID_DIRAC
) {
1063 /* set PES_extension_flag */
1067 /* One byte for PES2 extension flag +
1068 * one byte for extension length +
1069 * one byte for extension id */
1072 /* for Blu-ray AC3 Audio the PES Extension flag should be as follow
1073 * otherwise it will not play sound on blu-ray
1075 if (ts
->m2ts_mode
&&
1076 st
->codec
->codec_type
== AVMEDIA_TYPE_AUDIO
&&
1077 st
->codec
->codec_id
== AV_CODEC_ID_AC3
) {
1078 /* set PES_extension_flag */
1083 if (is_dvb_teletext
) {
1084 pes_header_stuffing_bytes
= 0x24 - header_len
;
1087 len
= payload_size
+ header_len
+ 3;
1088 /* 3 extra bytes should be added to DVB subtitle payload: 0x20 0x00 at the beginning and trailing 0xff */
1089 if (is_dvb_subtitle
) {
1095 if (ts
->omit_video_pes_length
&& st
->codec
->codec_type
== AVMEDIA_TYPE_VIDEO
) {
1101 /* data alignment indicator is required for subtitle and data streams */
1102 if (st
->codec
->codec_type
== AVMEDIA_TYPE_SUBTITLE
|| st
->codec
->codec_type
== AVMEDIA_TYPE_DATA
)
1107 if (pts
!= AV_NOPTS_VALUE
) {
1108 write_pts(q
, flags
>> 6, pts
);
1111 if (dts
!= AV_NOPTS_VALUE
&& pts
!= AV_NOPTS_VALUE
&& dts
!= pts
) {
1112 write_pts(q
, 1, dts
);
1115 if (pes_extension
&& st
->codec
->codec_id
== AV_CODEC_ID_DIRAC
) {
1116 flags
= 0x01; /* set PES_extension_flag_2 */
1118 *q
++ = 0x80 | 0x01; /* marker bit + extension length */
1119 /* Set the stream ID extension flag bit to 0 and
1120 * write the extended stream ID. */
1123 /* For Blu-ray AC3 Audio Setting extended flags */
1124 if (ts
->m2ts_mode
&&
1126 st
->codec
->codec_id
== AV_CODEC_ID_AC3
) {
1127 flags
= 0x01; /* set PES_extension_flag_2 */
1129 *q
++ = 0x80 | 0x01; /* marker bit + extension length */
1130 *q
++ = 0x00 | 0x71; /* for AC3 Audio (specifically on blue-rays) */
1134 if (is_dvb_subtitle
) {
1135 /* First two fields of DVB subtitles PES data:
1136 * data_identifier: for DVB subtitle streams shall be coded with the value 0x20
1137 * subtitle_stream_id: for DVB subtitle stream shall be identified by the value 0x00 */
1141 if (is_dvb_teletext
) {
1142 memset(q
, 0xff, pes_header_stuffing_bytes
);
1143 q
+= pes_header_stuffing_bytes
;
1148 header_len
= q
- buf
;
1150 len
= TS_PACKET_SIZE
- header_len
;
1151 if (len
> payload_size
)
1153 stuffing_len
= TS_PACKET_SIZE
- header_len
- len
;
1154 if (stuffing_len
> 0) {
1155 /* add stuffing with AFC */
1156 if (buf
[3] & 0x20) {
1157 /* stuffing already present: increase its size */
1158 afc_len
= buf
[4] + 1;
1159 memmove(buf
+ 4 + afc_len
+ stuffing_len
,
1161 header_len
- (4 + afc_len
));
1162 buf
[4] += stuffing_len
;
1163 memset(buf
+ 4 + afc_len
, 0xff, stuffing_len
);
1166 memmove(buf
+ 4 + stuffing_len
, buf
+ 4, header_len
- 4);
1168 buf
[4] = stuffing_len
- 1;
1169 if (stuffing_len
>= 2) {
1171 memset(buf
+ 6, 0xff, stuffing_len
- 2);
1176 if (is_dvb_subtitle
&& payload_size
== len
) {
1177 memcpy(buf
+ TS_PACKET_SIZE
- len
, payload
, len
- 1);
1178 buf
[TS_PACKET_SIZE
- 1] = 0xff; /* end_of_PES_data_field_marker: an 8-bit field with fixed contents 0xff for DVB subtitle */
1180 memcpy(buf
+ TS_PACKET_SIZE
- len
, payload
, len
);
1184 payload_size
-= len
;
1185 mpegts_prefix_m2ts_header(s
);
1186 avio_write(s
->pb
, buf
, TS_PACKET_SIZE
);
1188 ts_st
->prev_payload_key
= key
;
1191 int ff_check_h264_startcode(AVFormatContext
*s
, const AVStream
*st
, const AVPacket
*pkt
)
1193 if (pkt
->size
< 5 || AV_RB32(pkt
->data
) != 0x0000001) {
1194 if (!st
->nb_frames
) {
1195 av_log(s
, AV_LOG_ERROR
, "H.264 bitstream malformed, "
1196 "no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it "
1197 "('-bsf:v h264_mp4toannexb' option with ffmpeg)\n");
1198 return AVERROR_INVALIDDATA
;
1200 av_log(s
, AV_LOG_WARNING
, "H.264 bitstream error, startcode missing\n");
1205 static int check_hevc_startcode(AVFormatContext
*s
, const AVStream
*st
, const AVPacket
*pkt
)
1207 if (pkt
->size
< 5 || AV_RB32(pkt
->data
) != 0x0000001) {
1208 if (!st
->nb_frames
) {
1209 av_log(s
, AV_LOG_ERROR
, "HEVC bitstream malformed, no startcode found\n");
1210 return AVERROR_PATCHWELCOME
;
1212 av_log(s
, AV_LOG_WARNING
, "HEVC bitstream error, startcode missing\n");
1217 static int mpegts_write_packet_internal(AVFormatContext
*s
, AVPacket
*pkt
)
1219 AVStream
*st
= s
->streams
[pkt
->stream_index
];
1220 int size
= pkt
->size
;
1221 uint8_t *buf
= pkt
->data
;
1222 uint8_t *data
= NULL
;
1223 MpegTSWrite
*ts
= s
->priv_data
;
1224 MpegTSWriteStream
*ts_st
= st
->priv_data
;
1225 const int64_t delay
= av_rescale(s
->max_delay
, 90000, AV_TIME_BASE
) * 2;
1226 int64_t dts
= pkt
->dts
, pts
= pkt
->pts
;
1228 if (ts
->reemit_pat_pmt
) {
1229 av_log(s
, AV_LOG_WARNING
,
1230 "resend_headers option is deprecated, use -mpegts_flags resend_headers\n");
1231 ts
->reemit_pat_pmt
= 0;
1232 ts
->flags
|= MPEGTS_FLAG_REEMIT_PAT_PMT
;
1235 if (ts
->flags
& MPEGTS_FLAG_REEMIT_PAT_PMT
) {
1236 ts
->pat_packet_count
= ts
->pat_packet_period
- 1;
1237 ts
->sdt_packet_count
= ts
->sdt_packet_period
- 1;
1238 ts
->flags
&= ~MPEGTS_FLAG_REEMIT_PAT_PMT
;
1241 if (ts
->copyts
< 1) {
1242 if (pts
!= AV_NOPTS_VALUE
)
1244 if (dts
!= AV_NOPTS_VALUE
)
1248 if (ts_st
->first_pts_check
&& pts
== AV_NOPTS_VALUE
) {
1249 av_log(s
, AV_LOG_ERROR
, "first pts value must be set\n");
1250 return AVERROR_INVALIDDATA
;
1252 ts_st
->first_pts_check
= 0;
1254 if (st
->codec
->codec_id
== AV_CODEC_ID_H264
) {
1255 const uint8_t *p
= buf
, *buf_end
= p
+ size
;
1256 uint32_t state
= -1;
1257 int ret
= ff_check_h264_startcode(s
, st
, pkt
);
1262 p
= avpriv_find_start_code(p
, buf_end
, &state
);
1263 av_dlog(s
, "nal %d\n", state
& 0x1f);
1264 } while (p
< buf_end
&& (state
& 0x1f) != 9 &&
1265 (state
& 0x1f) != 5 && (state
& 0x1f) != 1);
1267 if ((state
& 0x1f) != 9) { // AUD NAL
1268 data
= av_malloc(pkt
->size
+ 6);
1270 return AVERROR(ENOMEM
);
1271 memcpy(data
+ 6, pkt
->data
, pkt
->size
);
1272 AV_WB32(data
, 0x00000001);
1274 data
[5] = 0xf0; // any slice type (0xe) + rbsp stop one bit
1276 size
= pkt
->size
+ 6;
1278 } else if (st
->codec
->codec_id
== AV_CODEC_ID_AAC
) {
1279 if (pkt
->size
< 2) {
1280 av_log(s
, AV_LOG_ERROR
, "AAC packet too short\n");
1281 return AVERROR_INVALIDDATA
;
1283 if ((AV_RB16(pkt
->data
) & 0xfff0) != 0xfff0) {
1288 av_log(s
, AV_LOG_ERROR
, "AAC bitstream not in ADTS format "
1289 "and extradata missing\n");
1290 return AVERROR_INVALIDDATA
;
1293 av_init_packet(&pkt2
);
1294 pkt2
.data
= pkt
->data
;
1295 pkt2
.size
= pkt
->size
;
1296 av_assert0(pkt
->dts
!= AV_NOPTS_VALUE
);
1297 pkt2
.dts
= av_rescale_q(pkt
->dts
, st
->time_base
, ts_st
->amux
->streams
[0]->time_base
);
1299 ret
= avio_open_dyn_buf(&ts_st
->amux
->pb
);
1301 return AVERROR(ENOMEM
);
1303 ret
= av_write_frame(ts_st
->amux
, &pkt2
);
1305 avio_close_dyn_buf(ts_st
->amux
->pb
, &data
);
1306 ts_st
->amux
->pb
= NULL
;
1310 size
= avio_close_dyn_buf(ts_st
->amux
->pb
, &data
);
1311 ts_st
->amux
->pb
= NULL
;
1314 } else if (st
->codec
->codec_id
== AV_CODEC_ID_HEVC
) {
1315 int ret
= check_hevc_startcode(s
, st
, pkt
);
1320 if (pkt
->dts
!= AV_NOPTS_VALUE
) {
1322 for(i
=0; i
<s
->nb_streams
; i
++) {
1323 AVStream
*st2
= s
->streams
[i
];
1324 MpegTSWriteStream
*ts_st2
= st2
->priv_data
;
1325 if ( ts_st2
->payload_size
1326 && (ts_st2
->payload_dts
== AV_NOPTS_VALUE
|| dts
- ts_st2
->payload_dts
> delay
/2)) {
1327 mpegts_write_pes(s
, st2
, ts_st2
->payload
, ts_st2
->payload_size
,
1328 ts_st2
->payload_pts
, ts_st2
->payload_dts
,
1329 ts_st2
->payload_flags
& AV_PKT_FLAG_KEY
);
1330 ts_st2
->payload_size
= 0;
1335 if (ts_st
->payload_size
&& ts_st
->payload_size
+ size
> ts
->pes_payload_size
) {
1336 mpegts_write_pes(s
, st
, ts_st
->payload
, ts_st
->payload_size
,
1337 ts_st
->payload_pts
, ts_st
->payload_dts
,
1338 ts_st
->payload_flags
& AV_PKT_FLAG_KEY
);
1339 ts_st
->payload_size
= 0;
1342 if (st
->codec
->codec_type
!= AVMEDIA_TYPE_AUDIO
|| size
> ts
->pes_payload_size
) {
1343 av_assert0(!ts_st
->payload_size
);
1344 // for video and subtitle, write a single pes packet
1345 mpegts_write_pes(s
, st
, buf
, size
, pts
, dts
,
1346 pkt
->flags
& AV_PKT_FLAG_KEY
);
1351 if (!ts_st
->payload_size
) {
1352 ts_st
->payload_pts
= pts
;
1353 ts_st
->payload_dts
= dts
;
1354 ts_st
->payload_flags
= pkt
->flags
;
1357 memcpy(ts_st
->payload
+ ts_st
->payload_size
, buf
, size
);
1358 ts_st
->payload_size
+= size
;
1365 static void mpegts_write_flush(AVFormatContext
*s
)
1369 /* flush current packets */
1370 for (i
= 0; i
< s
->nb_streams
; i
++) {
1371 AVStream
*st
= s
->streams
[i
];
1372 MpegTSWriteStream
*ts_st
= st
->priv_data
;
1373 if (ts_st
->payload_size
> 0) {
1374 mpegts_write_pes(s
, st
, ts_st
->payload
, ts_st
->payload_size
,
1375 ts_st
->payload_pts
, ts_st
->payload_dts
,
1376 ts_st
->payload_flags
& AV_PKT_FLAG_KEY
);
1377 ts_st
->payload_size
= 0;
1382 static int mpegts_write_packet(AVFormatContext
*s
, AVPacket
*pkt
)
1385 mpegts_write_flush(s
);
1388 return mpegts_write_packet_internal(s
, pkt
);
1392 static int mpegts_write_end(AVFormatContext
*s
)
1394 MpegTSWrite
*ts
= s
->priv_data
;
1395 MpegTSService
*service
;
1398 mpegts_write_flush(s
);
1400 for (i
= 0; i
< s
->nb_streams
; i
++) {
1401 AVStream
*st
= s
->streams
[i
];
1402 MpegTSWriteStream
*ts_st
= st
->priv_data
;
1403 av_freep(&ts_st
->payload
);
1405 avformat_free_context(ts_st
->amux
);
1410 for (i
= 0; i
< ts
->nb_services
; i
++) {
1411 service
= ts
->services
[i
];
1412 av_freep(&service
->provider_name
);
1413 av_freep(&service
->name
);
1416 av_free(ts
->services
);
1421 static const AVOption options
[] = {
1422 { "mpegts_transport_stream_id", "Set transport_stream_id field.",
1423 offsetof(MpegTSWrite
, transport_stream_id
), AV_OPT_TYPE_INT
,
1424 { .i64
= 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM
},
1425 { "mpegts_original_network_id", "Set original_network_id field.",
1426 offsetof(MpegTSWrite
, original_network_id
), AV_OPT_TYPE_INT
,
1427 { .i64
= 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM
},
1428 { "mpegts_service_id", "Set service_id field.",
1429 offsetof(MpegTSWrite
, service_id
), AV_OPT_TYPE_INT
,
1430 { .i64
= 0x0001 }, 0x0001, 0xffff, AV_OPT_FLAG_ENCODING_PARAM
},
1431 { "mpegts_pmt_start_pid", "Set the first pid of the PMT.",
1432 offsetof(MpegTSWrite
, pmt_start_pid
), AV_OPT_TYPE_INT
,
1433 { .i64
= 0x1000 }, 0x0010, 0x1f00, AV_OPT_FLAG_ENCODING_PARAM
},
1434 { "mpegts_start_pid", "Set the first pid.",
1435 offsetof(MpegTSWrite
, start_pid
), AV_OPT_TYPE_INT
,
1436 { .i64
= 0x0100 }, 0x0100, 0x0f00, AV_OPT_FLAG_ENCODING_PARAM
},
1437 { "mpegts_m2ts_mode", "Enable m2ts mode.",
1438 offsetof(MpegTSWrite
, m2ts_mode
), AV_OPT_TYPE_INT
,
1439 { .i64
= -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM
},
1441 offsetof(MpegTSWrite
, mux_rate
), AV_OPT_TYPE_INT
,
1442 { .i64
= 1 }, 0, INT_MAX
, AV_OPT_FLAG_ENCODING_PARAM
},
1443 { "pes_payload_size", "Minimum PES packet payload in bytes",
1444 offsetof(MpegTSWrite
, pes_payload_size
), AV_OPT_TYPE_INT
,
1445 { .i64
= DEFAULT_PES_PAYLOAD_SIZE
}, 0, INT_MAX
, AV_OPT_FLAG_ENCODING_PARAM
},
1446 { "mpegts_flags", "MPEG-TS muxing flags",
1447 offsetof(MpegTSWrite
, flags
), AV_OPT_TYPE_FLAGS
, { .i64
= 0 }, 0, INT_MAX
,
1448 AV_OPT_FLAG_ENCODING_PARAM
, "mpegts_flags" },
1449 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1450 0, AV_OPT_TYPE_CONST
, { .i64
= MPEGTS_FLAG_REEMIT_PAT_PMT
}, 0, INT_MAX
,
1451 AV_OPT_FLAG_ENCODING_PARAM
, "mpegts_flags" },
1452 { "latm", "Use LATM packetization for AAC",
1453 0, AV_OPT_TYPE_CONST
, { .i64
= MPEGTS_FLAG_AAC_LATM
}, 0, INT_MAX
,
1454 AV_OPT_FLAG_ENCODING_PARAM
, "mpegts_flags" },
1455 // backward compatibility
1456 { "resend_headers", "Reemit PAT/PMT before writing the next packet",
1457 offsetof(MpegTSWrite
, reemit_pat_pmt
), AV_OPT_TYPE_INT
,
1458 { .i64
= 0 }, 0, INT_MAX
, AV_OPT_FLAG_ENCODING_PARAM
},
1459 { "mpegts_copyts", "don't offset dts/pts",
1460 offsetof(MpegTSWrite
, copyts
), AV_OPT_TYPE_INT
,
1461 { .i64
= -1 }, -1, 1, AV_OPT_FLAG_ENCODING_PARAM
},
1462 { "tables_version", "set PAT, PMT and SDT version",
1463 offsetof(MpegTSWrite
, tables_version
), AV_OPT_TYPE_INT
,
1464 { .i64
= 0 }, 0, 31, AV_OPT_FLAG_ENCODING_PARAM
},
1465 { "omit_video_pes_length", "Omit the PES packet length for video packets",
1466 offsetof(MpegTSWrite
, omit_video_pes_length
), AV_OPT_TYPE_INT
,
1467 { .i64
= 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM
},
1468 { "pcr_period", "PCR retransmission time",
1469 offsetof(MpegTSWrite
, pcr_period
), AV_OPT_TYPE_INT
,
1470 { .i64
= PCR_RETRANS_TIME
}, 0, INT_MAX
, AV_OPT_FLAG_ENCODING_PARAM
},
1474 static const AVClass mpegts_muxer_class
= {
1475 .class_name
= "MPEGTS muxer",
1476 .item_name
= av_default_item_name
,
1478 .version
= LIBAVUTIL_VERSION_INT
,
1481 AVOutputFormat ff_mpegts_muxer
= {
1483 .long_name
= NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
1484 .mime_type
= "video/MP2T",
1485 .extensions
= "ts,m2t,m2ts,mts",
1486 .priv_data_size
= sizeof(MpegTSWrite
),
1487 .audio_codec
= AV_CODEC_ID_MP2
,
1488 .video_codec
= AV_CODEC_ID_MPEG2VIDEO
,
1489 .write_header
= mpegts_write_header
,
1490 .write_packet
= mpegts_write_packet
,
1491 .write_trailer
= mpegts_write_end
,
1492 .flags
= AVFMT_ALLOW_FLUSH
,
1493 .priv_class
= &mpegts_muxer_class
,