2 * MPEG-DASH ISO BMFF segmenter
3 * Copyright (c) 2014 Martin Storsjo
4 * Copyright (c) 2018 Akamai Technologies, Inc.
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/avassert.h"
29 #include "libavutil/avutil.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/intreadwrite.h"
32 #include "libavutil/mathematics.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/parseutils.h"
35 #include "libavutil/rational.h"
36 #include "libavutil/time.h"
37 #include "libavutil/time_internal.h"
42 #include "avio_internal.h"
43 #include "hlsplaylist.h"
44 #if CONFIG_HTTP_PROTOCOL
49 #include "os_support.h"
55 SEGMENT_TYPE_AUTO = 0,
63 FRAG_TYPE_EVERY_FRAME,
69 typedef struct Segment {
72 int range_length, index_length;
74 double prog_date_time;
79 typedef struct AdaptationSet {
83 int64_t frag_duration;
85 enum AVMediaType media_type;
86 AVDictionary *metadata;
87 AVRational min_frame_rate, max_frame_rate;
88 int ambiguous_frame_rate;
91 typedef struct OutputStream {
93 int ctx_inited, as_idx;
95 AVCodecParserContext *parser;
96 AVCodecContext *parser_avctx;
99 int64_t init_start_pos, pos;
100 int init_range_length;
101 int nb_segments, segments_size, segment_index;
102 int64_t seg_duration;
103 int64_t frag_duration;
104 int64_t last_duration;
106 int64_t first_pts, start_pts, max_pts;
107 int64_t last_dts, last_pts;
110 SegmentType segment_type; /* segment type selected for this particular stream */
111 const char *format_name;
112 const char *extension_name;
113 const char *single_file_name; /* file names selected for this particular stream */
114 const char *init_seg_name;
115 const char *media_seg_name;
120 char full_path[1024];
121 char temp_path[1024];
122 double availability_time_offset;
123 int64_t producer_reference_time;
124 char producer_reference_time_str[100];
126 int64_t total_pkt_duration;
131 typedef struct DASHContext {
132 const AVClass *class; /* Class for private options. */
133 char *adaptation_sets;
137 int extra_window_size;
138 #if FF_API_DASH_MIN_SEG_DURATION
139 int min_seg_duration;
141 int64_t seg_duration;
142 int64_t frag_duration;
147 OutputStream *streams;
149 int64_t last_duration;
150 int64_t total_duration;
151 char availability_start_time[100];
153 int64_t presentation_time_offset;
155 const char *single_file_name; /* file names as specified in options */
156 const char *init_seg_name;
157 const char *media_seg_name;
158 const char *utc_timing_url;
160 const char *user_agent;
163 int master_playlist_created;
164 AVIOContext *mpd_out;
165 AVIOContext *m3u8_out;
168 int index_correction;
169 AVDictionary *format_options;
171 SegmentType segment_type_option; /* segment type as specified in options */
172 int ignore_io_errors;
174 int master_publish_rate;
175 int nr_of_streams_to_flush;
176 int nr_of_streams_flushed;
181 static struct codec_string {
185 { AV_CODEC_ID_VP8, "vp8" },
186 { AV_CODEC_ID_VP9, "vp9" },
187 { AV_CODEC_ID_VORBIS, "vorbis" },
188 { AV_CODEC_ID_OPUS, "opus" },
189 { AV_CODEC_ID_FLAC, "flac" },
193 static struct format_string {
194 SegmentType segment_type;
197 { SEGMENT_TYPE_AUTO, "auto" },
198 { SEGMENT_TYPE_MP4, "mp4" },
199 { SEGMENT_TYPE_WEBM, "webm" },
203 static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
204 AVDictionary **options) {
205 DASHContext *c = s->priv_data;
206 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
207 int err = AVERROR_MUXER_NOT_FOUND;
208 if (!*pb || !http_base_proto || !c->http_persistent) {
209 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
210 #if CONFIG_HTTP_PROTOCOL
212 URLContext *http_url_context = ffio_geturlcontext(*pb);
213 av_assert0(http_url_context);
214 err = ff_http_do_new_request(http_url_context, filename);
216 ff_format_io_close(s, pb);
222 static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
223 DASHContext *c = s->priv_data;
224 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
229 if (!http_base_proto || !c->http_persistent) {
230 ff_format_io_close(s, pb);
231 #if CONFIG_HTTP_PROTOCOL
233 URLContext *http_url_context = ffio_geturlcontext(*pb);
234 av_assert0(http_url_context);
236 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
241 static const char *get_format_str(SegmentType segment_type) {
243 for (i = 0; i < SEGMENT_TYPE_NB; i++)
244 if (formats[i].segment_type == segment_type)
245 return formats[i].str;
249 static const char *get_extension_str(SegmentType type, int single_file)
253 case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
254 case SEGMENT_TYPE_WEBM: return "webm";
255 default: return NULL;
259 static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
260 DASHContext *c = s->priv_data;
261 char errbuf[AV_ERROR_MAX_STRING_SIZE];
262 av_strerror(err, errbuf, sizeof(errbuf));
263 av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
264 "Unable to open %s for writing: %s\n", url, errbuf);
265 return c->ignore_io_errors ? 0 : err;
268 static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
270 if (segment_type == SEGMENT_TYPE_AUTO) {
271 if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
272 codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
273 segment_type = SEGMENT_TYPE_WEBM;
275 segment_type = SEGMENT_TYPE_MP4;
282 static int init_segment_types(AVFormatContext *s)
284 DASHContext *c = s->priv_data;
285 int has_mp4_streams = 0;
286 for (int i = 0; i < s->nb_streams; ++i) {
287 OutputStream *os = &c->streams[i];
288 SegmentType segment_type = select_segment_type(
289 c->segment_type_option, s->streams[i]->codecpar->codec_id);
290 os->segment_type = segment_type;
291 os->format_name = get_format_str(segment_type);
292 if (!os->format_name) {
293 av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
294 return AVERROR_MUXER_NOT_FOUND;
296 os->extension_name = get_extension_str(segment_type, c->single_file);
297 if (!os->extension_name) {
298 av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
299 return AVERROR_MUXER_NOT_FOUND;
302 has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
305 if (c->hls_playlist && !has_mp4_streams) {
306 av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
313 static int check_file_extension(const char *filename, const char *extension) {
315 if (!filename || !extension)
317 dot = strrchr(filename, '.');
318 if (dot && !strcmp(dot + 1, extension))
323 static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
324 AVRational *frame_rate, char *str, int size) {
326 int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
328 av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
329 vpcc.profile, vpcc.level, vpcc.bitdepth);
331 // Default to just vp9 in case of error while finding out profile or level
332 av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
333 av_strlcpy(str, "vp9", size);
338 static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
339 AVRational *frame_rate, char *str, int size)
341 const AVCodecTag *tags[2] = { NULL, NULL };
345 // common Webm codecs are not part of RFC 6381
346 for (i = 0; codecs[i].id; i++)
347 if (codecs[i].id == par->codec_id) {
348 if (codecs[i].id == AV_CODEC_ID_VP9) {
349 set_vp9_codec_str(s, par, frame_rate, str, size);
351 av_strlcpy(str, codecs[i].str, size);
356 // for codecs part of RFC 6381
357 if (par->codec_type == AVMEDIA_TYPE_VIDEO)
358 tags[0] = ff_codec_movvideo_tags;
359 else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
360 tags[0] = ff_codec_movaudio_tags;
364 tag = par->codec_tag;
366 tag = av_codec_get_tag(tags, par->codec_id);
374 if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
376 tags[0] = ff_mp4_obj_type;
377 oti = av_codec_get_tag(tags, par->codec_id);
379 av_strlcatf(str, size, ".%02"PRIx32, oti);
383 if (tag == MKTAG('m', 'p', '4', 'a')) {
384 if (par->extradata_size >= 2) {
385 int aot = par->extradata[0] >> 3;
387 aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
388 av_strlcatf(str, size, ".%d", aot);
390 } else if (tag == MKTAG('m', 'p', '4', 'v')) {
391 // Unimplemented, should output ProfileLevelIndication as a decimal number
392 av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
394 } else if (!strcmp(str, "avc1")) {
395 uint8_t *tmpbuf = NULL;
396 uint8_t *extradata = par->extradata;
397 int extradata_size = par->extradata_size;
400 if (extradata[0] != 1) {
402 if (avio_open_dyn_buf(&pb) < 0)
404 if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
405 ffio_free_dyn_buf(&pb);
408 extradata_size = avio_close_dyn_buf(pb, &extradata);
412 if (extradata_size >= 4)
413 av_strlcatf(str, size, ".%02x%02x%02x",
414 extradata[1], extradata[2], extradata[3]);
416 } else if (!strcmp(str, "av01")) {
417 AV1SequenceParameters seq;
418 if (!par->extradata_size)
420 if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
423 av_strlcatf(str, size, ".%01u.%02u%s.%02u",
424 seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
425 if (seq.color_description_present_flag)
426 av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
428 seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
429 seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
434 static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
439 return AVERROR(EINVAL);
443 av_write_frame(os->ctx, NULL);
444 avio_flush(os->ctx->pb);
446 if (!c->single_file) {
448 *range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
451 avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
456 return avio_open_dyn_buf(&os->ctx->pb);
458 *range_length = avio_tell(os->ctx->pb) - os->pos;
463 static void set_http_options(AVDictionary **options, DASHContext *c)
466 av_dict_set(options, "method", c->method, 0);
468 av_dict_set(options, "user_agent", c->user_agent, 0);
469 if (c->http_persistent)
470 av_dict_set_int(options, "multiple_requests", 1, 0);
472 av_dict_set_int(options, "timeout", c->timeout, 0);
475 static void get_hls_playlist_name(char *playlist_name, int string_size,
476 const char *base_url, int id) {
478 snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
480 snprintf(playlist_name, string_size, "media_%d.m3u8", id);
483 static void get_start_index_number(OutputStream *os, DASHContext *c,
484 int *start_index, int *start_number) {
487 if (c->window_size) {
488 *start_index = FFMAX(os->nb_segments - c->window_size, 0);
489 *start_number = FFMAX(os->segment_index - c->window_size, 1);
493 static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
494 int representation_id, int final,
495 char *prefetch_url) {
496 DASHContext *c = s->priv_data;
497 int timescale = os->ctx->streams[0]->time_base.den;
498 char temp_filename_hls[1024];
499 char filename_hls[1024];
500 AVDictionary *http_opts = NULL;
501 int target_duration = 0;
503 const char *proto = avio_find_protocol_name(c->dirname);
504 int use_rename = proto && !strcmp(proto, "file");
505 int i, start_index, start_number;
506 double prog_date_time = 0;
508 get_start_index_number(os, c, &start_index, &start_number);
510 if (!c->hls_playlist || start_index >= os->nb_segments ||
511 os->segment_type != SEGMENT_TYPE_MP4)
514 get_hls_playlist_name(filename_hls, sizeof(filename_hls),
515 c->dirname, representation_id);
517 snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
519 set_http_options(&http_opts, c);
520 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
521 av_dict_free(&http_opts);
523 handle_io_open_error(s, ret, temp_filename_hls);
526 for (i = start_index; i < os->nb_segments; i++) {
527 Segment *seg = os->segments[i];
528 double duration = (double) seg->duration / timescale;
529 if (target_duration <= duration)
530 target_duration = lrint(duration);
533 ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
534 start_number, PLAYLIST_TYPE_NONE, 0);
536 ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
537 os->init_range_length, os->init_start_pos);
539 for (i = start_index; i < os->nb_segments; i++) {
540 Segment *seg = os->segments[i];
542 if (prog_date_time == 0) {
543 if (os->nb_segments == 1)
544 prog_date_time = c->start_time_s;
546 prog_date_time = seg->prog_date_time;
548 seg->prog_date_time = prog_date_time;
550 ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
551 (double) seg->duration / timescale, 0,
552 seg->range_length, seg->start_pos, NULL,
553 c->single_file ? os->initfile : seg->file,
554 &prog_date_time, 0, 0, 0);
556 av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
561 avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
564 ff_hls_write_end_list(c->m3u8_out);
566 dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
569 if (avpriv_io_move(temp_filename_hls, filename_hls) < 0) {
570 av_log(os->ctx, AV_LOG_WARNING, "renaming file %s to %s failed\n\n", temp_filename_hls, filename_hls);
574 static int flush_init_segment(AVFormatContext *s, OutputStream *os)
576 DASHContext *c = s->priv_data;
577 int ret, range_length;
579 ret = flush_dynbuf(c, os, &range_length);
583 os->pos = os->init_range_length = range_length;
584 if (!c->single_file) {
586 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
587 dashenc_io_close(s, &os->out, filename);
592 static void dash_free(AVFormatContext *s)
594 DASHContext *c = s->priv_data;
598 for (i = 0; i < c->nb_as; i++) {
599 av_dict_free(&c->as[i].metadata);
600 av_freep(&c->as[i].descriptor);
608 for (i = 0; i < s->nb_streams; i++) {
609 OutputStream *os = &c->streams[i];
610 if (os->ctx && os->ctx->pb) {
612 ffio_free_dyn_buf(&os->ctx->pb);
614 avio_close(os->ctx->pb);
616 ff_format_io_close(s, &os->out);
617 avformat_free_context(os->ctx);
618 avcodec_free_context(&os->parser_avctx);
619 av_parser_close(os->parser);
620 for (j = 0; j < os->nb_segments; j++)
621 av_free(os->segments[j]);
622 av_free(os->segments);
623 av_freep(&os->single_file_name);
624 av_freep(&os->init_seg_name);
625 av_freep(&os->media_seg_name);
627 av_freep(&c->streams);
629 ff_format_io_close(s, &c->mpd_out);
630 ff_format_io_close(s, &c->m3u8_out);
633 static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
634 int representation_id, int final)
636 DASHContext *c = s->priv_data;
637 int i, start_index, start_number;
638 get_start_index_number(os, c, &start_index, &start_number);
640 if (c->use_template) {
641 int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
642 avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
643 if (!c->use_timeline) {
644 avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
645 if (c->streaming && os->availability_time_offset)
646 avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
647 os->availability_time_offset);
649 avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
650 if (c->presentation_time_offset)
651 avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
652 avio_printf(out, ">\n");
653 if (c->use_timeline) {
654 int64_t cur_time = 0;
655 avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
656 for (i = start_index; i < os->nb_segments; ) {
657 Segment *seg = os->segments[i];
659 avio_printf(out, "\t\t\t\t\t\t<S ");
660 if (i == start_index || seg->time != cur_time) {
661 cur_time = seg->time;
662 avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
664 avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
665 while (i + repeat + 1 < os->nb_segments &&
666 os->segments[i + repeat + 1]->duration == seg->duration &&
667 os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
670 avio_printf(out, "r=\"%d\" ", repeat);
671 avio_printf(out, "/>\n");
673 cur_time += (1 + repeat) * seg->duration;
675 avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
677 avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
678 } else if (c->single_file) {
679 avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
680 avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
681 avio_printf(out, "\t\t\t\t\t<Initialization range=\"%"PRId64"-%"PRId64"\" />\n", os->init_start_pos, os->init_start_pos + os->init_range_length - 1);
682 for (i = start_index; i < os->nb_segments; i++) {
683 Segment *seg = os->segments[i];
684 avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
685 if (seg->index_length)
686 avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
687 avio_printf(out, "/>\n");
689 avio_printf(out, "\t\t\t\t</SegmentList>\n");
691 avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
692 avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
693 for (i = start_index; i < os->nb_segments; i++) {
694 Segment *seg = os->segments[i];
695 avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
697 avio_printf(out, "\t\t\t\t</SegmentList>\n");
699 if (!c->lhls || final) {
700 write_hls_media_playlist(os, s, representation_id, final, NULL);
705 static char *xmlescape(const char *str) {
706 int outlen = strlen(str)*3/2 + 6;
707 char *out = av_realloc(NULL, outlen + 1);
711 for (; *str; str++) {
712 if (pos + 6 > outlen) {
714 outlen = 2 * outlen + 6;
715 tmp = av_realloc(out, outlen + 1);
723 memcpy(&out[pos], "&", 5);
725 } else if (*str == '<') {
726 memcpy(&out[pos], "<", 4);
728 } else if (*str == '>') {
729 memcpy(&out[pos], ">", 4);
731 } else if (*str == '\'') {
732 memcpy(&out[pos], "'", 6);
734 } else if (*str == '\"') {
735 memcpy(&out[pos], """, 6);
745 static void write_time(AVIOContext *out, int64_t time)
747 int seconds = time / AV_TIME_BASE;
748 int fractions = time % AV_TIME_BASE;
749 int minutes = seconds / 60;
750 int hours = minutes / 60;
753 avio_printf(out, "PT");
755 avio_printf(out, "%dH", hours);
756 if (hours || minutes)
757 avio_printf(out, "%dM", minutes);
758 avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
761 static void format_date(char *buf, int size, int64_t time_us)
763 struct tm *ptm, tmbuf;
764 int64_t time_ms = time_us / 1000;
765 const time_t time_s = time_ms / 1000;
766 int millisec = time_ms - (time_s * 1000);
767 ptm = gmtime_r(&time_s, &tmbuf);
770 if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
775 snprintf(buf + len, size - len, ".%03dZ", millisec);
779 static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
782 DASHContext *c = s->priv_data;
783 AdaptationSet *as = &c->as[as_index];
784 AVDictionaryEntry *lang, *role;
787 avio_printf(out, "\t\t<AdaptationSet id=\"%s\" contentType=\"%s\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
788 as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
789 if (as->media_type == AVMEDIA_TYPE_VIDEO && as->max_frame_rate.num && !as->ambiguous_frame_rate && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
790 avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
791 lang = av_dict_get(as->metadata, "language", NULL, 0);
793 avio_printf(out, " lang=\"%s\"", lang->value);
794 avio_printf(out, ">\n");
796 role = av_dict_get(as->metadata, "role", NULL, 0);
798 avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
800 avio_printf(out, "\t\t\t%s\n", as->descriptor);
801 for (i = 0; i < s->nb_streams; i++) {
802 AVStream *st = s->streams[i];
803 OutputStream *os = &c->streams[i];
804 char bandwidth_str[64] = {'\0'};
806 if (os->as_idx - 1 != as_index)
809 if (os->bit_rate > 0)
810 snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
813 if (as->media_type == AVMEDIA_TYPE_VIDEO) {
814 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
815 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
816 if (st->avg_frame_rate.num)
817 avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
818 avio_printf(out, ">\n");
820 avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
821 i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
822 avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
823 s->streams[i]->codecpar->channels);
825 if (!final && c->write_prft && os->producer_reference_time_str[0]) {
826 avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"encoder\" wallclockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
827 i, os->producer_reference_time_str, c->presentation_time_offset);
828 avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
829 avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
831 output_segment_list(os, out, s, i, final);
832 avio_printf(out, "\t\t\t</Representation>\n");
834 avio_printf(out, "\t\t</AdaptationSet>\n");
839 static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
841 DASHContext *c = s->priv_data;
843 void *mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
845 return AVERROR(ENOMEM);
849 *as = &c->as[c->nb_as - 1];
850 memset(*as, 0, sizeof(**as));
851 (*as)->media_type = type;
852 (*as)->frag_type = -1;
857 static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
859 DASHContext *c = s->priv_data;
860 AdaptationSet *as = &c->as[as_idx - 1];
861 OutputStream *os = &c->streams[i];
863 if (as->media_type != s->streams[i]->codecpar->codec_type) {
864 av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
865 return AVERROR(EINVAL);
866 } else if (os->as_idx) {
867 av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
868 return AVERROR(EINVAL);
875 static int parse_adaptation_sets(AVFormatContext *s)
877 DASHContext *c = s->priv_data;
878 const char *p = c->adaptation_sets;
879 enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
883 // default: one AdaptationSet for each stream
885 for (i = 0; i < s->nb_streams; i++) {
886 if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
888 snprintf(as->id, sizeof(as->id), "%d", i);
890 c->streams[i].as_idx = c->nb_as;
895 // syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
896 // option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
897 // option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2 and so on
898 // descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
899 // descriptor_str should be a self-closing xml tag.
900 // seg_duration and frag_duration have the same syntax as the global options of
901 // the same name, and the former have precedence over them if set.
907 } else if (state == new_set && av_strstart(p, "id=", &p)) {
909 if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
913 snprintf(as->id, sizeof(as->id), "%.*s", n, p);
918 state = parse_default;
919 } else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
920 state = parse_seg_duration;
921 } else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
922 state = parse_frag_duration;
923 } else if (state == parse_seg_duration || state == parse_frag_duration) {
928 snprintf(str, sizeof(str), "%.*s", n, p);
933 ret = av_parse_time(&usecs, str, 1);
935 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
939 if (state == parse_seg_duration)
940 as->seg_duration = usecs;
942 as->frag_duration = usecs;
943 state = parse_default;
944 } else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
948 snprintf(type_str, sizeof(type_str), "%.*s", n, p);
953 if (!strcmp(type_str, "duration"))
954 as->frag_type = FRAG_TYPE_DURATION;
955 else if (!strcmp(type_str, "pframes"))
956 as->frag_type = FRAG_TYPE_PFRAMES;
957 else if (!strcmp(type_str, "every_frame"))
958 as->frag_type = FRAG_TYPE_EVERY_FRAME;
959 else if (!strcmp(type_str, "none"))
960 as->frag_type = FRAG_TYPE_NONE;
962 av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
965 state = parse_default;
966 } else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
967 n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
969 as->descriptor = av_strndup(p, n);
971 av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
972 return AVERROR(EINVAL);
977 state = parse_default;
978 } else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
979 state = parsing_streams;
980 } else if (state == parsing_streams) {
981 AdaptationSet *as = &c->as[c->nb_as - 1];
982 char idx_str[8], *end_str;
984 n = strcspn(p, " ,");
985 snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
988 // if value is "a" or "v", map all streams of that type
989 if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
990 enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
991 av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
993 for (i = 0; i < s->nb_streams; i++) {
994 if (s->streams[i]->codecpar->codec_type != type)
997 as->media_type = s->streams[i]->codecpar->codec_type;
999 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1002 } else { // select single stream
1003 i = strtol(idx_str, &end_str, 10);
1004 if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
1005 av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
1006 return AVERROR(EINVAL);
1008 av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
1010 if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
1011 as->media_type = s->streams[i]->codecpar->codec_type;
1014 if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
1023 return AVERROR(EINVAL);
1028 // check for unassigned streams
1029 for (i = 0; i < s->nb_streams; i++) {
1030 OutputStream *os = &c->streams[i];
1032 av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
1033 return AVERROR(EINVAL);
1039 static int write_manifest(AVFormatContext *s, int final)
1041 DASHContext *c = s->priv_data;
1043 char temp_filename[1024];
1045 const char *proto = avio_find_protocol_name(s->url);
1046 int use_rename = proto && !strcmp(proto, "file");
1047 static unsigned int warned_non_file = 0;
1048 AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
1049 AVDictionary *opts = NULL;
1051 if (!use_rename && !warned_non_file++)
1052 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1054 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
1055 set_http_options(&opts, c);
1056 ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
1057 av_dict_free(&opts);
1059 return handle_io_open_error(s, ret, temp_filename);
1062 avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
1063 avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
1064 "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
1065 "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
1066 "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
1067 "\tprofiles=\"urn:mpeg:dash:profile:isoff-live:2011\"\n"
1068 "\ttype=\"%s\"\n", final ? "static" : "dynamic");
1070 avio_printf(out, "\tmediaPresentationDuration=\"");
1071 write_time(out, c->total_duration);
1072 avio_printf(out, "\"\n");
1074 int64_t update_period = c->last_duration / AV_TIME_BASE;
1076 if (c->use_template && !c->use_timeline)
1077 update_period = 500;
1078 avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
1079 avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
1080 if (c->availability_start_time[0])
1081 avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
1082 format_date(now_str, sizeof(now_str), av_gettime());
1084 avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
1085 if (c->window_size && c->use_template) {
1086 avio_printf(out, "\ttimeShiftBufferDepth=\"");
1087 write_time(out, c->last_duration * c->window_size);
1088 avio_printf(out, "\"\n");
1091 avio_printf(out, "\tminBufferTime=\"");
1092 write_time(out, c->last_duration * 2);
1093 avio_printf(out, "\">\n");
1094 avio_printf(out, "\t<ProgramInformation>\n");
1096 char *escaped = xmlescape(title->value);
1097 avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
1100 avio_printf(out, "\t</ProgramInformation>\n");
1102 if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
1103 OutputStream *os = &c->streams[0];
1104 int start_index = FFMAX(os->nb_segments - c->window_size, 0);
1105 int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
1106 avio_printf(out, "\t<Period id=\"0\" start=\"");
1107 write_time(out, start_time);
1108 avio_printf(out, "\">\n");
1110 avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
1113 for (i = 0; i < c->nb_as; i++) {
1114 if ((ret = write_adaptation_set(s, out, i, final)) < 0)
1117 avio_printf(out, "\t</Period>\n");
1119 if (c->utc_timing_url)
1120 avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
1122 avio_printf(out, "</MPD>\n");
1124 dashenc_io_close(s, &c->mpd_out, temp_filename);
1127 if ((ret = avpriv_io_move(temp_filename, s->url)) < 0)
1131 if (c->hls_playlist) {
1132 char filename_hls[1024];
1133 const char *audio_group = "A1";
1134 char audio_codec_str[128] = "\0";
1136 int max_audio_bitrate = 0;
1138 // Publish master playlist only the configured rate
1139 if (c->master_playlist_created && (!c->master_publish_rate ||
1140 c->streams[0].segment_index % c->master_publish_rate))
1144 snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
1146 snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
1148 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
1150 set_http_options(&opts, c);
1151 ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
1152 av_dict_free(&opts);
1154 return handle_io_open_error(s, ret, temp_filename);
1157 ff_hls_write_playlist_version(c->m3u8_out, 7);
1159 for (i = 0; i < s->nb_streams; i++) {
1160 char playlist_file[64];
1161 AVStream *st = s->streams[i];
1162 OutputStream *os = &c->streams[i];
1163 if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1165 if (os->segment_type != SEGMENT_TYPE_MP4)
1167 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1168 ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
1169 playlist_file, NULL, i, is_default);
1170 max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
1171 os->muxer_overhead, max_audio_bitrate);
1172 if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
1173 if (strlen(audio_codec_str))
1174 av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
1175 av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
1180 for (i = 0; i < s->nb_streams; i++) {
1181 char playlist_file[64];
1182 char codec_str[128];
1183 AVStream *st = s->streams[i];
1184 OutputStream *os = &c->streams[i];
1185 char *agroup = NULL;
1186 char *codec_str_ptr = NULL;
1187 int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
1188 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1190 if (os->segment_type != SEGMENT_TYPE_MP4)
1192 av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
1193 if (max_audio_bitrate) {
1194 agroup = (char *)audio_group;
1195 stream_bitrate += max_audio_bitrate;
1196 av_strlcat(codec_str, ",", sizeof(codec_str));
1197 av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
1199 if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
1200 codec_str_ptr = codec_str;
1202 get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
1203 ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
1204 playlist_file, agroup,
1205 codec_str_ptr, NULL);
1207 dashenc_io_close(s, &c->m3u8_out, temp_filename);
1209 if ((ret = avpriv_io_move(temp_filename, filename_hls)) < 0)
1211 c->master_playlist_created = 1;
1217 static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
1219 AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
1221 av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
1225 static int dash_init(AVFormatContext *s)
1227 DASHContext *c = s->priv_data;
1230 char basename[1024];
1232 c->nr_of_streams_to_flush = 0;
1233 if (c->single_file_name)
1236 c->use_template = 0;
1238 #if FF_API_DASH_MIN_SEG_DURATION
1239 if (c->min_seg_duration != 5000000) {
1240 av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
1241 c->seg_duration = c->min_seg_duration;
1244 if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
1245 av_log(s, AV_LOG_ERROR,
1246 "LHLS is experimental, Please set -strict experimental in order to enable it.\n");
1247 return AVERROR_EXPERIMENTAL;
1250 if (c->lhls && !c->streaming) {
1251 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
1255 if (c->lhls && !c->hls_playlist) {
1256 av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
1260 if (c->global_sidx && !c->single_file) {
1261 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
1265 if (c->global_sidx && c->streaming) {
1266 av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
1269 if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
1270 av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
1271 c->frag_type = FRAG_TYPE_EVERY_FRAME;
1274 if (c->write_prft && !c->utc_timing_url) {
1275 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
1279 if (c->write_prft && !c->streaming) {
1280 av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
1284 av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
1285 ptr = strrchr(c->dirname, '/');
1287 av_strlcpy(basename, &ptr[1], sizeof(basename));
1290 c->dirname[0] = '\0';
1291 av_strlcpy(basename, s->url, sizeof(basename));
1294 ptr = strrchr(basename, '.');
1298 c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
1300 return AVERROR(ENOMEM);
1302 if ((ret = parse_adaptation_sets(s)) < 0)
1305 if ((ret = init_segment_types(s)) < 0)
1308 for (i = 0; i < s->nb_streams; i++) {
1309 OutputStream *os = &c->streams[i];
1310 AdaptationSet *as = &c->as[os->as_idx - 1];
1311 AVFormatContext *ctx;
1313 AVDictionary *opts = NULL;
1314 char filename[1024];
1316 os->bit_rate = s->streams[i]->codecpar->bit_rate;
1317 if (!os->bit_rate) {
1318 int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
1319 AV_LOG_ERROR : AV_LOG_WARNING;
1320 av_log(s, level, "No bit rate set for stream %d\n", i);
1321 if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
1322 return AVERROR(EINVAL);
1325 // copy AdaptationSet language and role from stream metadata
1326 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
1327 dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
1329 if (c->init_seg_name) {
1330 os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
1331 if (!os->init_seg_name)
1332 return AVERROR(ENOMEM);
1334 if (c->media_seg_name) {
1335 os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
1336 if (!os->media_seg_name)
1337 return AVERROR(ENOMEM);
1339 if (c->single_file_name) {
1340 os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
1341 if (!os->single_file_name)
1342 return AVERROR(ENOMEM);
1345 if (os->segment_type == SEGMENT_TYPE_WEBM) {
1346 if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
1347 (!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
1348 (c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
1349 av_log(s, AV_LOG_WARNING,
1350 "One or many segment file names doesn't end with .webm. "
1351 "Override -init_seg_name and/or -media_seg_name and/or "
1352 "-single_file_name to end with the extension .webm\n");
1355 // Streaming not supported as matroskaenc buffers internally before writing the output
1356 av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
1361 os->ctx = ctx = avformat_alloc_context();
1363 return AVERROR(ENOMEM);
1365 ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
1367 return AVERROR_MUXER_NOT_FOUND;
1368 ctx->interrupt_callback = s->interrupt_callback;
1369 ctx->opaque = s->opaque;
1370 ctx->io_close = s->io_close;
1371 ctx->io_open = s->io_open;
1372 ctx->strict_std_compliance = s->strict_std_compliance;
1374 if (!(st = avformat_new_stream(ctx, NULL)))
1375 return AVERROR(ENOMEM);
1376 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
1377 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
1378 st->time_base = s->streams[i]->time_base;
1379 st->avg_frame_rate = s->streams[i]->avg_frame_rate;
1380 ctx->avoid_negative_ts = s->avoid_negative_ts;
1381 ctx->flags = s->flags;
1383 os->parser = av_parser_init(st->codecpar->codec_id);
1385 os->parser_avctx = avcodec_alloc_context3(NULL);
1386 if (!os->parser_avctx)
1387 return AVERROR(ENOMEM);
1388 ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
1391 // We only want to parse frame headers
1392 os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1395 if (c->single_file) {
1396 if (os->single_file_name)
1397 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
1399 snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
1401 ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
1403 snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
1404 set_http_options(&opts, c);
1405 if (!c->single_file) {
1406 if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
1408 ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
1410 ctx->url = av_strdup(filename);
1411 ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
1413 av_dict_free(&opts);
1416 os->init_start_pos = 0;
1418 av_dict_copy(&opts, c->format_options, 0);
1419 if (!as->seg_duration)
1420 as->seg_duration = c->seg_duration;
1421 if (!as->frag_duration)
1422 as->frag_duration = c->frag_duration;
1423 if (as->frag_type < 0)
1424 as->frag_type = c->frag_type;
1425 os->seg_duration = as->seg_duration;
1426 os->frag_duration = as->frag_duration;
1427 os->frag_type = as->frag_type;
1429 if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
1430 av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
1431 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1433 if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
1434 av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
1435 return AVERROR(EINVAL);
1437 if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
1438 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
1439 av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
1440 os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
1443 if (os->segment_type == SEGMENT_TYPE_MP4) {
1445 // skip_sidx : Reduce bitrate overhead
1446 // skip_trailer : Avoids growing memory usage with time
1447 av_dict_set(&opts, "movflags", "dash+delay_moov+skip_sidx+skip_trailer", 0);
1450 av_dict_set(&opts, "movflags", "dash+delay_moov+global_sidx+skip_trailer", 0);
1452 av_dict_set(&opts, "movflags", "dash+delay_moov+skip_trailer", 0);
1454 if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
1455 av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
1457 av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
1458 if (os->frag_type == FRAG_TYPE_DURATION)
1459 av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
1461 av_dict_set(&opts, "write_prft", "wallclock", 0);
1463 av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
1464 av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
1465 av_dict_set_int(&opts, "dash", 1, 0);
1466 av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
1467 av_dict_set_int(&opts, "live", 1, 0);
1469 ret = avformat_init_output(ctx, &opts);
1470 av_dict_free(&opts);
1474 avio_flush(ctx->pb);
1476 av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
1478 s->streams[i]->time_base = st->time_base;
1479 // If the muxer wants to shift timestamps, request to have them shifted
1480 // already before being handed to this muxer, so we don't have mismatches
1481 // between the MPD and the actual segments.
1482 s->avoid_negative_ts = ctx->avoid_negative_ts;
1483 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1484 AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
1485 if (avg_frame_rate.num > 0) {
1486 if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
1487 as->min_frame_rate = avg_frame_rate;
1488 if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
1489 as->max_frame_rate = avg_frame_rate;
1491 as->ambiguous_frame_rate = 1;
1496 set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
1497 sizeof(os->codec_str));
1498 os->first_pts = AV_NOPTS_VALUE;
1499 os->max_pts = AV_NOPTS_VALUE;
1500 os->last_dts = AV_NOPTS_VALUE;
1501 os->segment_index = 1;
1503 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1504 c->nr_of_streams_to_flush++;
1507 if (!c->has_video && c->seg_duration <= 0) {
1508 av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
1509 return AVERROR(EINVAL);
1511 if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
1512 av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
1514 c->nr_of_streams_flushed = 0;
1519 static int dash_write_header(AVFormatContext *s)
1521 DASHContext *c = s->priv_data;
1523 for (i = 0; i < s->nb_streams; i++) {
1524 OutputStream *os = &c->streams[i];
1525 if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
1528 // Flush init segment
1529 // Only for WebM segment, since for mp4 delay_moov is set and
1530 // the init segment is thus flushed after the first packets.
1531 if (os->segment_type == SEGMENT_TYPE_WEBM &&
1532 (ret = flush_init_segment(s, os)) < 0)
1538 static int add_segment(OutputStream *os, const char *file,
1539 int64_t time, int64_t duration,
1540 int64_t start_pos, int64_t range_length,
1541 int64_t index_length, int next_exp_index)
1545 if (os->nb_segments >= os->segments_size) {
1546 os->segments_size = (os->segments_size + 1) * 2;
1547 if ((err = av_reallocp(&os->segments, sizeof(*os->segments) *
1548 os->segments_size)) < 0) {
1549 os->segments_size = 0;
1550 os->nb_segments = 0;
1554 seg = av_mallocz(sizeof(*seg));
1556 return AVERROR(ENOMEM);
1557 av_strlcpy(seg->file, file, sizeof(seg->file));
1559 seg->duration = duration;
1560 if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
1561 seg->duration += seg->time;
1564 seg->start_pos = start_pos;
1565 seg->range_length = range_length;
1566 seg->index_length = index_length;
1567 os->segments[os->nb_segments++] = seg;
1568 os->segment_index++;
1569 //correcting the segment index if it has fallen behind the expected value
1570 if (os->segment_index < next_exp_index) {
1571 av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
1572 file, os->segment_index, next_exp_index);
1573 os->segment_index = next_exp_index;
1578 static void write_styp(AVIOContext *pb)
1581 ffio_wfourcc(pb, "styp");
1582 ffio_wfourcc(pb, "msdh");
1583 avio_wb32(pb, 0); /* minor */
1584 ffio_wfourcc(pb, "msdh");
1585 ffio_wfourcc(pb, "msix");
1588 static void find_index_range(AVFormatContext *s, const char *full_path,
1589 int64_t pos, int *index_length)
1595 ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
1598 if (avio_seek(pb, pos, SEEK_SET) != pos) {
1599 ff_format_io_close(s, &pb);
1602 ret = avio_read(pb, buf, 8);
1603 ff_format_io_close(s, &pb);
1606 if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
1608 *index_length = AV_RB32(&buf[0]);
1611 static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
1612 AVPacket *pkt, AVRational *frame_rate)
1614 AVCodecParameters *par = os->ctx->streams[0]->codecpar;
1616 int ret, extradata_size;
1618 if (par->extradata_size)
1621 extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
1622 if (!extradata_size)
1625 ret = ff_alloc_extradata(par, extradata_size);
1629 memcpy(par->extradata, extradata, extradata_size);
1631 set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
1636 static void dashenc_delete_file(AVFormatContext *s, char *filename) {
1637 DASHContext *c = s->priv_data;
1638 int http_base_proto = ff_is_http_proto(filename);
1640 if (http_base_proto) {
1641 AVIOContext *out = NULL;
1642 AVDictionary *http_opts = NULL;
1644 set_http_options(&http_opts, c);
1645 av_dict_set(&http_opts, "method", "DELETE", 0);
1647 if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
1648 av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
1651 av_dict_free(&http_opts);
1652 ff_format_io_close(s, &out);
1654 int res = avpriv_io_delete(filename);
1656 char errbuf[AV_ERROR_MAX_STRING_SIZE];
1657 av_strerror(res, errbuf, sizeof(errbuf));
1658 av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
1663 static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
1665 DASHContext *c = s->priv_data;
1666 size_t dirname_len, file_len;
1667 char filename[1024];
1669 dirname_len = strlen(c->dirname);
1670 if (dirname_len >= sizeof(filename)) {
1671 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the directory path is too long: %"PRIu64" characters: %s\n",
1672 (uint64_t)dirname_len, c->dirname);
1673 return AVERROR(ENAMETOOLONG);
1676 memcpy(filename, c->dirname, dirname_len);
1678 file_len = strlen(file);
1679 if ((dirname_len + file_len) >= sizeof(filename)) {
1680 av_log(s, AV_LOG_WARNING, "Cannot delete segments as the path is too long: %"PRIu64" characters: %s%s\n",
1681 (uint64_t)(dirname_len + file_len), c->dirname, file);
1682 return AVERROR(ENAMETOOLONG);
1685 memcpy(filename + dirname_len, file, file_len + 1); // include the terminating zero
1686 dashenc_delete_file(s, filename);
1691 static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
1693 for (int i = 0; i < remove_count; ++i) {
1694 dashenc_delete_segment_file(s, os->segments[i]->file);
1696 // Delete the segment regardless of whether the file was successfully deleted
1697 av_free(os->segments[i]);
1700 os->nb_segments -= remove_count;
1701 memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
1704 static int dash_flush(AVFormatContext *s, int final, int stream)
1706 DASHContext *c = s->priv_data;
1709 const char *proto = avio_find_protocol_name(s->url);
1710 int use_rename = proto && !strcmp(proto, "file");
1712 int cur_flush_segment_index = 0, next_exp_index = -1;
1714 cur_flush_segment_index = c->streams[stream].segment_index;
1716 //finding the next segment's expected index, based on the current pts value
1717 if (c->use_template && !c->use_timeline && c->index_correction &&
1718 c->streams[stream].last_pts != AV_NOPTS_VALUE &&
1719 c->streams[stream].first_pts != AV_NOPTS_VALUE) {
1720 int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
1721 c->streams[stream].first_pts,
1722 s->streams[stream]->time_base,
1724 next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
1728 for (i = 0; i < s->nb_streams; i++) {
1729 OutputStream *os = &c->streams[i];
1730 AVStream *st = s->streams[i];
1731 int range_length, index_length = 0;
1733 if (!os->packets_written)
1736 // Flush the single stream that got a keyframe right now.
1737 // Flush all audio streams as well, in sync with video keyframes,
1738 // but not the other video streams.
1739 if (stream >= 0 && i != stream) {
1740 if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
1741 s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
1743 if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1745 // Make sure we don't flush audio streams multiple times, when
1746 // all video streams are flushed one at a time.
1747 if (c->has_video && os->segment_index > cur_flush_segment_index)
1751 if (!c->single_file) {
1752 if (os->segment_type == SEGMENT_TYPE_MP4 && !os->written_len)
1753 write_styp(os->ctx->pb);
1755 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
1758 ret = flush_dynbuf(c, os, &range_length);
1761 os->packets_written = 0;
1763 if (c->single_file) {
1764 find_index_range(s, os->full_path, os->pos, &index_length);
1766 dashenc_io_close(s, &os->out, os->temp_path);
1769 ret = avpriv_io_move(os->temp_path, os->full_path);
1775 os->last_duration = FFMAX(os->last_duration, av_rescale_q(os->max_pts - os->start_pts,
1779 if (!os->muxer_overhead)
1780 os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
1782 av_rescale_q(os->max_pts - os->start_pts,
1783 st->time_base, AV_TIME_BASE_Q);
1784 os->total_pkt_size = 0;
1785 os->total_pkt_duration = 0;
1787 if (!os->bit_rate) {
1788 // calculate average bitrate of first segment
1789 int64_t bitrate = (int64_t) range_length * 8 * AV_TIME_BASE / av_rescale_q(os->max_pts - os->start_pts,
1793 os->bit_rate = bitrate;
1795 add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
1796 av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
1798 os->pos += range_length;
1801 if (c->window_size) {
1802 for (i = 0; i < s->nb_streams; i++) {
1803 OutputStream *os = &c->streams[i];
1804 int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
1805 if (remove_count > 0)
1806 dashenc_delete_media_segments(s, os, remove_count);
1811 for (i = 0; i < s->nb_streams; i++) {
1812 OutputStream *os = &c->streams[i];
1813 if (os->ctx && os->ctx_inited) {
1814 int64_t file_size = avio_tell(os->ctx->pb);
1815 av_write_trailer(os->ctx);
1816 if (c->global_sidx) {
1817 int j, start_index, start_number;
1818 int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
1819 get_start_index_number(os, c, &start_index, &start_number);
1820 if (start_index >= os->nb_segments ||
1821 os->segment_type != SEGMENT_TYPE_MP4)
1823 os->init_range_length += sidx_size;
1824 for (j = start_index; j < os->nb_segments; j++) {
1825 Segment *seg = os->segments[j];
1826 seg->start_pos += sidx_size;
1834 if (c->has_video && !final) {
1835 c->nr_of_streams_flushed++;
1836 if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
1839 c->nr_of_streams_flushed = 0;
1841 ret = write_manifest(s, final);
1846 static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
1848 DASHContext *c = s->priv_data;
1849 AVStream *st = s->streams[pkt->stream_index];
1850 OutputStream *os = &c->streams[pkt->stream_index];
1851 int64_t seg_end_duration, elapsed_duration;
1854 ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
1858 // Fill in a heuristic guess of the packet duration, if none is available.
1859 // The mp4 muxer will do something similar (for the last packet in a fragment)
1860 // if nothing is set (setting it for the other packets doesn't hurt).
1861 // By setting a nonzero duration here, we can be sure that the mp4 muxer won't
1862 // invoke its heuristic (this doesn't have to be identical to that algorithm),
1863 // so that we know the exact timestamps of fragments.
1864 if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
1865 pkt->duration = pkt->dts - os->last_dts;
1866 os->last_dts = pkt->dts;
1868 // If forcing the stream to start at 0, the mp4 muxer will set the start
1869 // timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
1870 if (os->first_pts == AV_NOPTS_VALUE &&
1871 s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
1872 pkt->pts -= pkt->dts;
1876 if (os->first_pts == AV_NOPTS_VALUE) {
1878 AVProducerReferenceTime *prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT,
1880 if (prft && side_data_size == sizeof(AVProducerReferenceTime) && !prft->flags)
1881 os->producer_reference_time = prft->wallclock;
1882 os->first_pts = pkt->pts;
1884 os->last_pts = pkt->pts;
1886 if (!c->availability_start_time[0]) {
1887 int64_t start_time_us = av_gettime();
1888 c->start_time_s = start_time_us / 1000000;
1889 format_date(c->availability_start_time,
1890 sizeof(c->availability_start_time), start_time_us);
1893 if (!os->packets_written)
1894 os->availability_time_offset = 0;
1896 if (!os->availability_time_offset &&
1897 ((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
1898 (os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
1899 int64_t frame_duration = 0;
1901 switch (os->frag_type) {
1902 case FRAG_TYPE_DURATION:
1903 frame_duration = os->frag_duration;
1905 case FRAG_TYPE_EVERY_FRAME:
1906 frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
1910 os->availability_time_offset = ((double) os->seg_duration -
1911 frame_duration) / AV_TIME_BASE;
1914 if (c->use_template && !c->use_timeline) {
1915 elapsed_duration = pkt->pts - os->first_pts;
1916 seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
1918 elapsed_duration = pkt->pts - os->start_pts;
1919 seg_end_duration = os->seg_duration;
1922 if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
1923 av_compare_ts(elapsed_duration, st->time_base,
1924 seg_end_duration, AV_TIME_BASE_Q) >= 0) {
1925 if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1926 c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
1929 c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
1933 if ((!c->use_timeline || !c->use_template) && os->last_duration) {
1934 if (c->last_duration < os->last_duration*9/10 ||
1935 c->last_duration > os->last_duration*11/10) {
1936 av_log(s, AV_LOG_WARNING,
1937 "Segment durations differ too much, enable use_timeline "
1938 "and use_template, or keep a stricter keyframe interval\n");
1943 if (c->write_prft && os->producer_reference_time && !os->producer_reference_time_str[0])
1944 format_date(os->producer_reference_time_str,
1945 sizeof(os->producer_reference_time_str),
1946 os->producer_reference_time);
1948 if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
1952 if (!os->packets_written) {
1953 // If we wrote a previous segment, adjust the start time of the segment
1954 // to the end of the previous one (which is the same as the mp4 muxer
1955 // does). This avoids gaps in the timeline.
1956 if (os->max_pts != AV_NOPTS_VALUE)
1957 os->start_pts = os->max_pts;
1959 os->start_pts = pkt->pts;
1961 if (os->max_pts == AV_NOPTS_VALUE)
1962 os->max_pts = pkt->pts + pkt->duration;
1964 os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
1966 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1967 os->frag_type == FRAG_TYPE_PFRAMES &&
1968 os->packets_written) {
1972 av_assert0(os->parser);
1973 av_parser_parse2(os->parser, os->parser_avctx,
1974 &data, &size, pkt->data, pkt->size,
1975 pkt->pts, pkt->dts, pkt->pos);
1977 if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
1978 st->codecpar->video_delay &&
1979 !(os->last_flags & AV_PKT_FLAG_KEY)) ||
1980 pkt->flags & AV_PKT_FLAG_KEY) {
1981 ret = av_write_frame(os->ctx, NULL);
1985 if (!os->availability_time_offset) {
1986 int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
1988 os->availability_time_offset = ((double) os->seg_duration -
1989 frag_duration) / AV_TIME_BASE;
1994 if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
1997 os->packets_written++;
1998 os->total_pkt_size += pkt->size;
1999 os->total_pkt_duration += pkt->duration;
2000 os->last_flags = pkt->flags;
2002 if (!os->init_range_length)
2003 flush_init_segment(s, os);
2005 //open the output context when the first frame of a segment is ready
2006 if (!c->single_file && os->packets_written == 1) {
2007 AVDictionary *opts = NULL;
2008 const char *proto = avio_find_protocol_name(s->url);
2009 int use_rename = proto && !strcmp(proto, "file");
2010 os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
2011 ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
2012 os->media_seg_name, pkt->stream_index,
2013 os->segment_index, os->bit_rate, os->start_pts);
2014 snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
2016 snprintf(os->temp_path, sizeof(os->temp_path),
2017 use_rename ? "%s.tmp" : "%s", os->full_path);
2018 set_http_options(&opts, c);
2019 ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
2020 av_dict_free(&opts);
2022 return handle_io_open_error(s, ret, os->temp_path);
2025 char *prefetch_url = use_rename ? NULL : os->filename;
2026 write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
2030 //write out the data immediately in streaming mode
2031 if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
2033 uint8_t *buf = NULL;
2034 if (!os->written_len)
2035 write_styp(os->ctx->pb);
2036 avio_flush(os->ctx->pb);
2037 len = avio_get_dyn_buf (os->ctx->pb, &buf);
2039 avio_write(os->out, buf + os->written_len, len - os->written_len);
2040 avio_flush(os->out);
2042 os->written_len = len;
2048 static int dash_write_trailer(AVFormatContext *s)
2050 DASHContext *c = s->priv_data;
2053 if (s->nb_streams > 0) {
2054 OutputStream *os = &c->streams[0];
2055 // If no segments have been written so far, try to do a crude
2056 // guess of the segment duration
2057 if (!c->last_duration)
2058 c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
2059 s->streams[0]->time_base,
2061 c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
2062 s->streams[0]->time_base,
2065 dash_flush(s, 1, -1);
2067 if (c->remove_at_exit) {
2068 for (i = 0; i < s->nb_streams; ++i) {
2069 OutputStream *os = &c->streams[i];
2070 dashenc_delete_media_segments(s, os, os->nb_segments);
2071 dashenc_delete_segment_file(s, os->initfile);
2072 if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
2073 char filename[1024];
2074 get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
2075 dashenc_delete_file(s, filename);
2078 dashenc_delete_file(s, s->url);
2080 if (c->hls_playlist && c->master_playlist_created) {
2081 char filename[1024];
2082 snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
2083 dashenc_delete_file(s, filename);
2090 static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
2092 DASHContext *c = s->priv_data;
2093 OutputStream *os = &c->streams[avpkt->stream_index];
2094 AVFormatContext *oc = os->ctx;
2095 if (oc->oformat->check_bitstream) {
2097 AVPacket pkt = *avpkt;
2098 pkt.stream_index = 0;
2099 ret = oc->oformat->check_bitstream(oc, &pkt);
2101 AVStream *st = s->streams[avpkt->stream_index];
2102 AVStream *ost = oc->streams[0];
2103 st->internal->bsfcs = ost->internal->bsfcs;
2104 st->internal->nb_bsfcs = ost->internal->nb_bsfcs;
2105 ost->internal->bsfcs = NULL;
2106 ost->internal->nb_bsfcs = 0;
2113 #define OFFSET(x) offsetof(DASHContext, x)
2114 #define E AV_OPT_FLAG_ENCODING_PARAM
2115 static const AVOption options[] = {
2116 { "adaptation_sets", "Adaptation sets. Syntax: id=0,streams=0,1,2 id=1,streams=3,4 and so on", OFFSET(adaptation_sets), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
2117 { "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
2118 { "extra_window_size", "number of segments kept outside of the manifest before removing from disk", OFFSET(extra_window_size), AV_OPT_TYPE_INT, { .i64 = 5 }, 0, INT_MAX, E },
2119 #if FF_API_DASH_MIN_SEG_DURATION
2120 { "min_seg_duration", "minimum segment duration (in microseconds) (will be deprecated)", OFFSET(min_seg_duration), AV_OPT_TYPE_INT, { .i64 = 5000000 }, 0, INT_MAX, E },
2122 { "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
2123 { "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
2124 { "frag_type", "set type of interval for fragments", OFFSET(frag_type), AV_OPT_TYPE_INT, {.i64 = FRAG_TYPE_NONE }, 0, FRAG_TYPE_NB - 1, E, "frag_type"},
2125 { "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
2126 { "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
2127 { "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
2128 { "pframes", "fragment at keyframes and following P-Frame reordering (Video only, experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_PFRAMES }, 0, UINT_MAX, E, "frag_type"},
2129 { "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2130 { "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2131 { "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
2132 { "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2133 { "single_file_name", "DASH-templated name to be used for baseURL. Implies storing all segments in one file, accessed using byte ranges", OFFSET(single_file_name), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
2134 { "init_seg_name", "DASH-templated name to used for the initialization segment", OFFSET(init_seg_name), AV_OPT_TYPE_STRING, {.str = "init-stream$RepresentationID$.$ext$"}, 0, 0, E },
2135 { "media_seg_name", "DASH-templated name to used for the media segments", OFFSET(media_seg_name), AV_OPT_TYPE_STRING, {.str = "chunk-stream$RepresentationID$-$Number%05d$.$ext$"}, 0, 0, E },
2136 { "utc_timing_url", "URL of the page that will return the UTC timestamp in ISO format", OFFSET(utc_timing_url), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E },
2137 { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
2138 { "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2139 { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2140 { "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2141 { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2142 { "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2143 { "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2144 { "format_options","set list of options for the container format (mp4/webm) used for dash", OFFSET(format_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E},
2145 { "global_sidx", "Write global SIDX atom. Applicable only for single file, mp4 output, non-streaming mode", OFFSET(global_sidx), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2146 { "dash_segment_type", "set dash segment files type", OFFSET(segment_type_option), AV_OPT_TYPE_INT, {.i64 = SEGMENT_TYPE_AUTO }, 0, SEGMENT_TYPE_NB - 1, E, "segment_type"},
2147 { "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
2148 { "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
2149 { "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
2150 { "ignore_io_errors", "Ignore IO errors during open and write. Useful for long-duration runs with network output", OFFSET(ignore_io_errors), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2151 { "lhls", "Enable Low-latency HLS(Experimental). Adds #EXT-X-PREFETCH tag with current segment's URI", OFFSET(lhls), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2152 { "master_m3u8_publish_rate", "Publish master playlist every after this many segment intervals", OFFSET(master_publish_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT_MAX, E},
2153 { "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2157 static const AVClass dash_class = {
2158 .class_name = "dash muxer",
2159 .item_name = av_default_item_name,
2161 .version = LIBAVUTIL_VERSION_INT,
2164 AVOutputFormat ff_dash_muxer = {
2166 .long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
2167 .extensions = "mpd",
2168 .priv_data_size = sizeof(DASHContext),
2169 .audio_codec = AV_CODEC_ID_AAC,
2170 .video_codec = AV_CODEC_ID_H264,
2171 .flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
2173 .write_header = dash_write_header,
2174 .write_packet = dash_write_packet,
2175 .write_trailer = dash_write_trailer,
2176 .deinit = dash_free,
2177 .check_bitstream = dash_check_bitstream,
2178 .priv_class = &dash_class,