2 * Apple HTTP Live Streaming segmenter
3 * Copyright (c) 2012, Luca Barbato
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
29 #include "libavutil/avassert.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/parseutils.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/log.h"
35 #include "libavutil/time_internal.h"
38 #include "avio_internal.h"
40 #include "os_support.h"
43 #define LINE_BUFFER_SIZE 1024
45 typedef struct HLSSegment {
47 char sub_filename[1024];
48 double duration; /* in seconds */
53 char key_uri[LINE_BUFFER_SIZE + 1];
54 char iv_string[KEYSIZE*2 + 1];
56 struct HLSSegment *next;
59 typedef enum HLSFlags {
60 // Generate a single media file and use byte ranges in the playlist.
61 HLS_SINGLE_FILE = (1 << 0),
62 HLS_DELETE_SEGMENTS = (1 << 1),
63 HLS_ROUND_DURATIONS = (1 << 2),
64 HLS_DISCONT_START = (1 << 3),
65 HLS_OMIT_ENDLIST = (1 << 4),
66 HLS_SPLIT_BY_TIME = (1 << 5),
67 HLS_APPEND_LIST = (1 << 6),
68 HLS_PROGRAM_DATE_TIME = (1 << 7),
69 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
70 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
71 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
81 typedef struct HLSContext {
82 const AVClass *class; // Class for private options.
85 int64_t start_sequence;
86 AVOutputFormat *oformat;
87 AVOutputFormat *vtt_oformat;
90 AVFormatContext *vtt_avf;
92 float time; // Set by a private option.
93 float init_time; // Set by a private option.
94 int max_nb_segments; // Set by a private option.
95 int wrap; // Set by a private option.
96 uint32_t flags; // enum HLSFlags
97 uint32_t pl_type; // enum PlaylistType
98 char *segment_filename;
100 int use_localtime; ///< flag to expand filename with localtime
101 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
103 int64_t recording_time;
107 double dpp; // duration per packet
110 double duration; // last segment duration computed so far, in seconds
111 int64_t start_pos; // last segment starting position
112 int64_t size; // last segment size
113 int64_t max_seg_size; // every segment file max size
115 int discontinuity_set;
118 HLSSegment *segments;
119 HLSSegment *last_segment;
120 HLSSegment *old_segments;
126 char *format_options_str;
127 char *vtt_format_options_str;
128 char *subtitle_filename;
129 AVDictionary *format_options;
132 char key_file[LINE_BUFFER_SIZE + 1];
133 char key_uri[LINE_BUFFER_SIZE + 1];
134 char key_string[KEYSIZE*2 + 1];
135 char iv_string[KEYSIZE*2 + 1];
136 AVDictionary *vtt_format_options;
140 double initial_prog_date_time;
141 char current_segment_final_filename_fmt[1024]; // when renaming segments
144 static int mkdir_p(const char *path) {
146 char *temp = av_strdup(path);
150 if (!path || !temp) {
154 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
156 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
160 for ( ; *pos != '\0'; ++pos) {
161 if (*pos == '/' || *pos == '\\') {
164 ret = mkdir(temp, 0755);
169 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
170 ret = mkdir(temp, 0755);
177 static int replace_int_data_in_filename(char *buf, int buf_size, const char *filename, char placeholder, int64_t number)
180 char *q, buf1[20], c;
181 int nd, len, addchar_count;
190 if (c == '%' && *(p+1) == '%') // %%
192 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
195 while (av_isdigit(*(p + addchar_count))) {
196 nd = nd * 10 + *(p + addchar_count) - '0';
200 if (*(p + addchar_count) == placeholder) {
201 len = snprintf(buf1, sizeof(buf1), "%0*"PRId64, (number < 0) ? nd : nd++, number);
202 if (len < 1) // returned error or empty buf1
204 if ((q - buf + len) > buf_size - 1)
206 memcpy(q, buf1, len);
208 p += (addchar_count + 1);
216 while (addchar_count--)
217 if ((q - buf) < buf_size - 1)
229 static int hls_delete_old_segments(HLSContext *hls) {
231 HLSSegment *segment, *previous_segment = NULL;
232 float playlist_duration = 0.0f;
233 int ret = 0, path_size, sub_path_size;
234 char *dirname = NULL, *p, *sub_path;
237 segment = hls->segments;
239 playlist_duration += segment->duration;
240 segment = segment->next;
243 segment = hls->old_segments;
245 playlist_duration -= segment->duration;
246 previous_segment = segment;
247 segment = previous_segment->next;
248 if (playlist_duration <= -previous_segment->duration) {
249 previous_segment->next = NULL;
254 if (segment && !hls->use_localtime_mkdir) {
255 if (hls->segment_filename) {
256 dirname = av_strdup(hls->segment_filename);
258 dirname = av_strdup(hls->avf->filename);
261 ret = AVERROR(ENOMEM);
264 p = (char *)av_basename(dirname);
269 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
271 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
272 path = av_malloc(path_size);
274 ret = AVERROR(ENOMEM);
278 if (hls->use_localtime_mkdir)
279 av_strlcpy(path, segment->filename, path_size);
280 else { // segment->filename contains basename only
281 av_strlcpy(path, dirname, path_size);
282 av_strlcat(path, segment->filename, path_size);
285 if (unlink(path) < 0) {
286 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
287 path, strerror(errno));
290 if ((segment->sub_filename[0] != '\0')) {
291 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
292 sub_path = av_malloc(sub_path_size);
294 ret = AVERROR(ENOMEM);
298 av_strlcpy(sub_path, dirname, sub_path_size);
299 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
300 if (unlink(sub_path) < 0) {
301 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
302 sub_path, strerror(errno));
307 previous_segment = segment;
308 segment = previous_segment->next;
309 av_free(previous_segment);
319 static int hls_encryption_start(AVFormatContext *s)
321 HLSContext *hls = s->priv_data;
324 uint8_t key[KEYSIZE];
326 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
327 av_log(hls, AV_LOG_ERROR,
328 "error opening key info file %s\n", hls->key_info_file);
332 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
333 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
335 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
336 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
338 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
339 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
341 ff_format_io_close(s, &pb);
343 if (!*hls->key_uri) {
344 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
345 return AVERROR(EINVAL);
348 if (!*hls->key_file) {
349 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
350 return AVERROR(EINVAL);
353 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
354 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
358 ret = avio_read(pb, key, sizeof(key));
359 ff_format_io_close(s, &pb);
360 if (ret != sizeof(key)) {
361 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
362 if (ret >= 0 || ret == AVERROR_EOF)
363 ret = AVERROR(EINVAL);
366 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
371 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
373 int len = ff_get_line(s, buf, maxlen);
374 while (len > 0 && av_isspace(buf[len - 1]))
379 static int hls_mux_init(AVFormatContext *s)
381 HLSContext *hls = s->priv_data;
383 AVFormatContext *vtt_oc = NULL;
386 ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
391 oc->oformat = hls->oformat;
392 oc->interrupt_callback = s->interrupt_callback;
393 oc->max_delay = s->max_delay;
394 oc->opaque = s->opaque;
395 oc->io_open = s->io_open;
396 oc->io_close = s->io_close;
397 av_dict_copy(&oc->metadata, s->metadata, 0);
399 if(hls->vtt_oformat) {
400 ret = avformat_alloc_output_context2(&hls->vtt_avf, hls->vtt_oformat, NULL, NULL);
403 vtt_oc = hls->vtt_avf;
404 vtt_oc->oformat = hls->vtt_oformat;
405 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
408 for (i = 0; i < s->nb_streams; i++) {
410 AVFormatContext *loc;
411 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
416 if (!(st = avformat_new_stream(loc, NULL)))
417 return AVERROR(ENOMEM);
418 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
419 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
420 st->time_base = s->streams[i]->time_base;
428 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
431 if (!av_strcasecmp(segment->filename,filename))
433 segment = segment->next;
435 return (HLSSegment *) NULL;
438 /* Create a new segment and append it to the segment list */
439 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration,
440 int64_t pos, int64_t size)
442 HLSSegment *en = av_malloc(sizeof(*en));
443 const char *filename;
447 return AVERROR(ENOMEM);
449 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
450 strlen(hls->current_segment_final_filename_fmt)) {
451 char * old_filename = av_strdup(hls->avf->filename); // %%s will be %s after strftime
454 return AVERROR(ENOMEM);
456 av_strlcpy(hls->avf->filename, hls->current_segment_final_filename_fmt, sizeof(hls->avf->filename));
457 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
458 char * filename = av_strdup(hls->avf->filename); // %%s will be %s after strftime
460 av_free(old_filename);
462 return AVERROR(ENOMEM);
464 if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename),
465 filename, 's', pos + size) < 1) {
466 av_log(hls, AV_LOG_ERROR,
467 "Invalid second level segment filename template '%s', "
468 "you can try to remove second_level_segment_size flag\n",
471 av_free(old_filename);
473 return AVERROR(EINVAL);
477 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
478 char * filename = av_strdup(hls->avf->filename); // %%t will be %t after strftime
480 av_free(old_filename);
482 return AVERROR(ENOMEM);
484 if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename),
485 filename, 't', (int64_t)round(1000000 * duration)) < 1) {
486 av_log(hls, AV_LOG_ERROR,
487 "Invalid second level segment filename template '%s', "
488 "you can try to remove second_level_segment_time flag\n",
491 av_free(old_filename);
493 return AVERROR(EINVAL);
497 ff_rename(old_filename, hls->avf->filename, hls);
498 av_free(old_filename);
502 filename = av_basename(hls->avf->filename);
504 if (hls->use_localtime_mkdir) {
505 filename = hls->avf->filename;
507 if (find_segment_by_filename(hls->segments, filename)
508 || find_segment_by_filename(hls->old_segments, filename)) {
509 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
511 av_strlcpy(en->filename, filename, sizeof(en->filename));
513 if(hls->has_subtitle)
514 av_strlcpy(en->sub_filename, av_basename(hls->vtt_avf->filename), sizeof(en->sub_filename));
516 en->sub_filename[0] = '\0';
518 en->duration = duration;
524 if (hls->discontinuity) {
526 hls->discontinuity = 0;
529 if (hls->key_info_file) {
530 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
531 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
537 hls->last_segment->next = en;
539 hls->last_segment = en;
541 // EVENT or VOD playlists imply sliding window cannot be used
542 if (hls->pl_type != PLAYLIST_TYPE_NONE)
543 hls->max_nb_segments = 0;
545 if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
547 hls->initial_prog_date_time += en->duration;
548 hls->segments = en->next;
549 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
550 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
551 en->next = hls->old_segments;
552 hls->old_segments = en;
553 if ((ret = hls_delete_old_segments(hls)) < 0)
560 if (hls->max_seg_size > 0) {
568 static int parse_playlist(AVFormatContext *s, const char *url)
570 HLSContext *hls = s->priv_data;
572 int ret = 0, is_segment = 0;
573 int64_t new_start_pos;
577 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
578 &s->interrupt_callback, NULL,
579 s->protocol_whitelist, s->protocol_blacklist)) < 0)
582 read_chomp_line(in, line, sizeof(line));
583 if (strcmp(line, "#EXTM3U")) {
584 ret = AVERROR_INVALIDDATA;
588 hls->discontinuity = 0;
589 while (!avio_feof(in)) {
590 read_chomp_line(in, line, sizeof(line));
591 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
592 hls->sequence = atoi(ptr);
593 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
595 hls->discontinuity = 1;
596 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
598 hls->duration = atof(ptr);
599 } else if (av_strstart(line, "#", NULL)) {
601 } else if (line[0]) {
604 new_start_pos = avio_tell(hls->avf->pb);
605 hls->size = new_start_pos - hls->start_pos;
606 av_strlcpy(hls->avf->filename, line, sizeof(line));
607 ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
610 hls->start_pos = new_start_pos;
620 static void hls_free_segments(HLSSegment *p)
631 static void set_http_options(AVDictionary **options, HLSContext *c)
634 av_dict_set(options, "method", c->method, 0);
637 static int hls_window(AVFormatContext *s, int last)
639 HLSContext *hls = s->priv_data;
641 int target_duration = 0;
643 AVIOContext *out = NULL;
644 AVIOContext *sub_out = NULL;
645 char temp_filename[1024];
646 int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
648 const char *proto = avio_find_protocol_name(s->filename);
649 int use_rename = proto && !strcmp(proto, "file");
650 static unsigned warned_non_file;
651 char *key_uri = NULL;
652 char *iv_string = NULL;
653 AVDictionary *options = NULL;
654 double prog_date_time = hls->initial_prog_date_time;
655 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
657 if (byterange_mode) {
662 if (!use_rename && !warned_non_file++)
663 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
665 set_http_options(&options, hls);
666 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
667 if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
670 for (en = hls->segments; en; en = en->next) {
671 if (target_duration < en->duration)
672 target_duration = ceil(en->duration);
675 hls->discontinuity_set = 0;
676 avio_printf(out, "#EXTM3U\n");
677 avio_printf(out, "#EXT-X-VERSION:%d\n", version);
678 if (hls->allowcache == 0 || hls->allowcache == 1) {
679 avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
681 avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
682 avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
683 if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
684 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
685 } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
686 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
689 av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
691 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){
692 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
693 hls->discontinuity_set = 1;
695 for (en = hls->segments; en; en = en->next) {
696 if (hls->key_info_file && (!key_uri || strcmp(en->key_uri, key_uri) ||
697 av_strcasecmp(en->iv_string, iv_string))) {
698 avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
700 avio_printf(out, ",IV=0x%s", en->iv_string);
701 avio_printf(out, "\n");
702 key_uri = en->key_uri;
703 iv_string = en->iv_string;
707 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
710 if (hls->flags & HLS_ROUND_DURATIONS)
711 avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
713 avio_printf(out, "#EXTINF:%f,\n", en->duration);
715 avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
717 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
718 time_t tt, wrongsecs;
720 struct tm *tm, tmpbuf;
721 char buf0[128], buf1[128];
722 tt = (int64_t)prog_date_time;
723 milli = av_clip(lrint(1000*(prog_date_time - tt)), 0, 999);
724 tm = localtime_r(&tt, &tmpbuf);
725 strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm);
726 if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') {
727 int tz_min, dst = tm->tm_isdst;
728 tm = gmtime_r(&tt, &tmpbuf);
730 wrongsecs = mktime(tm);
731 tz_min = (abs(wrongsecs - tt) + 30) / 60;
732 snprintf(buf1, sizeof(buf1),
734 wrongsecs <= tt ? '+' : '-',
738 avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1);
739 prog_date_time += en->duration;
742 avio_printf(out, "%s", hls->baseurl);
743 avio_printf(out, "%s\n", en->filename);
746 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
747 avio_printf(out, "#EXT-X-ENDLIST\n");
749 if( hls->vtt_m3u8_name ) {
750 if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
752 avio_printf(sub_out, "#EXTM3U\n");
753 avio_printf(sub_out, "#EXT-X-VERSION:%d\n", version);
754 if (hls->allowcache == 0 || hls->allowcache == 1) {
755 avio_printf(sub_out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
757 avio_printf(sub_out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
758 avio_printf(sub_out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
760 av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
763 for (en = hls->segments; en; en = en->next) {
764 avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
766 avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
769 avio_printf(sub_out, "%s", hls->baseurl);
770 avio_printf(sub_out, "%s\n", en->sub_filename);
774 avio_printf(sub_out, "#EXT-X-ENDLIST\n");
779 av_dict_free(&options);
780 ff_format_io_close(s, &out);
781 ff_format_io_close(s, &sub_out);
782 if (ret >= 0 && use_rename)
783 ff_rename(temp_filename, s->filename, s);
787 static int hls_start(AVFormatContext *s)
789 HLSContext *c = s->priv_data;
790 AVFormatContext *oc = c->avf;
791 AVFormatContext *vtt_oc = c->vtt_avf;
792 AVDictionary *options = NULL;
793 char *filename, iv_string[KEYSIZE*2 + 1];
796 if (c->flags & HLS_SINGLE_FILE) {
797 av_strlcpy(oc->filename, c->basename,
798 sizeof(oc->filename));
800 av_strlcpy(vtt_oc->filename, c->vtt_basename,
801 sizeof(vtt_oc->filename));
802 } else if (c->max_seg_size > 0) {
803 if (av_get_frame_filename2(oc->filename, sizeof(oc->filename),
804 c->basename, c->wrap ? c->sequence % c->wrap : c->sequence,
805 AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
806 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", c->basename);
807 return AVERROR(EINVAL);
810 if (c->use_localtime) {
812 struct tm *tm, tmpbuf;
814 tm = localtime_r(&now0, &tmpbuf);
815 if (!strftime(oc->filename, sizeof(oc->filename), c->basename, tm)) {
816 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
817 return AVERROR(EINVAL);
819 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
820 char * filename = av_strdup(oc->filename); // %%d will be %d after strftime
822 return AVERROR(ENOMEM);
823 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
824 filename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
825 av_log(c, AV_LOG_ERROR,
826 "Invalid second level segment filename template '%s', "
827 "you can try to remove second_level_segment_index flag\n",
830 return AVERROR(EINVAL);
834 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
835 av_strlcpy(c->current_segment_final_filename_fmt, oc->filename,
836 sizeof(c->current_segment_final_filename_fmt));
837 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
838 char * filename = av_strdup(oc->filename); // %%s will be %s after strftime
840 return AVERROR(ENOMEM);
841 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 's', 0) < 1) {
842 av_log(c, AV_LOG_ERROR,
843 "Invalid second level segment filename template '%s', "
844 "you can try to remove second_level_segment_size flag\n",
847 return AVERROR(EINVAL);
851 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
852 char * filename = av_strdup(oc->filename); // %%t will be %t after strftime
854 return AVERROR(ENOMEM);
855 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 't', 0) < 1) {
856 av_log(c, AV_LOG_ERROR,
857 "Invalid second level segment filename template '%s', "
858 "you can try to remove second_level_segment_time flag\n",
861 return AVERROR(EINVAL);
866 if (c->use_localtime_mkdir) {
868 char *fn_copy = av_strdup(oc->filename);
870 return AVERROR(ENOMEM);
872 dir = av_dirname(fn_copy);
873 if (mkdir_p(dir) == -1 && errno != EEXIST) {
874 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
876 return AVERROR(errno);
880 } else if (av_get_frame_filename2(oc->filename, sizeof(oc->filename),
881 c->basename, c->wrap ? c->sequence % c->wrap : c->sequence,
882 AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
883 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", c->basename);
884 return AVERROR(EINVAL);
886 if( c->vtt_basename) {
887 if (av_get_frame_filename2(vtt_oc->filename, sizeof(vtt_oc->filename),
888 c->vtt_basename, c->wrap ? c->sequence % c->wrap : c->sequence,
889 AV_FRAME_FILENAME_FLAGS_MULTIPLE) < 0) {
890 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename);
891 return AVERROR(EINVAL);
897 set_http_options(&options, c);
899 if (c->key_info_file) {
900 if ((err = hls_encryption_start(s)) < 0)
902 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
905 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
907 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, c->sequence);
908 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
911 filename = av_asprintf("crypto:%s", oc->filename);
913 err = AVERROR(ENOMEM);
916 err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options);
918 av_dict_free(&options);
922 if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
924 if (c->vtt_basename) {
925 set_http_options(&options, c);
926 if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
929 av_dict_free(&options);
931 /* We only require one PAT/PMT per segment. */
932 if (oc->oformat->priv_class && oc->priv_data) {
935 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
937 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
938 av_opt_set(oc->priv_data, "sdt_period", period, 0);
939 av_opt_set(oc->priv_data, "pat_period", period, 0);
942 if (c->vtt_basename) {
943 err = avformat_write_header(vtt_oc,NULL);
950 av_dict_free(&options);
955 static const char * get_default_pattern_localtime_fmt(void)
958 time_t t = time(NULL);
960 p = localtime_r(&t, &tmbuf);
961 // no %s support when strftime returned error or left format string unchanged
962 return (!strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
965 static int hls_write_header(AVFormatContext *s)
967 HLSContext *hls = s->priv_data;
970 const char *pattern = "%d.ts";
971 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt();
972 const char *vtt_pattern = "%d.vtt";
973 AVDictionary *options = NULL;
975 int vtt_basename_size;
977 hls->sequence = hls->start_sequence;
978 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
979 hls->start_pts = AV_NOPTS_VALUE;
980 hls->current_segment_final_filename_fmt[0] = '\0';
982 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
985 hls->initial_prog_date_time = now0;
988 if (hls->format_options_str) {
989 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
991 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
996 for (i = 0; i < s->nb_streams; i++) {
998 s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1000 s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
1003 if (hls->has_video > 1)
1004 av_log(s, AV_LOG_WARNING,
1005 "More than a single video stream present, "
1006 "expect issues decoding it.\n");
1008 hls->oformat = av_guess_format("mpegts", NULL, NULL);
1010 if (!hls->oformat) {
1011 ret = AVERROR_MUXER_NOT_FOUND;
1015 if(hls->has_subtitle) {
1016 hls->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
1017 if (!hls->oformat) {
1018 ret = AVERROR_MUXER_NOT_FOUND;
1023 if (hls->segment_filename) {
1024 hls->basename = av_strdup(hls->segment_filename);
1025 if (!hls->basename) {
1026 ret = AVERROR(ENOMEM);
1030 if (hls->flags & HLS_SINGLE_FILE)
1033 if (hls->use_localtime) {
1034 basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
1036 basename_size = strlen(s->filename) + strlen(pattern) + 1;
1038 hls->basename = av_malloc(basename_size);
1039 if (!hls->basename) {
1040 ret = AVERROR(ENOMEM);
1044 av_strlcpy(hls->basename, s->filename, basename_size);
1046 p = strrchr(hls->basename, '.');
1049 if (hls->use_localtime) {
1050 av_strlcat(hls->basename, pattern_localtime_fmt, basename_size);
1052 av_strlcat(hls->basename, pattern, basename_size);
1055 if (!hls->use_localtime) {
1056 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1057 av_log(hls, AV_LOG_ERROR,
1058 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
1059 ret = AVERROR(EINVAL);
1062 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1063 av_log(hls, AV_LOG_ERROR,
1064 "second_level_segment_size hls_flag requires use_localtime to be true\n");
1065 ret = AVERROR(EINVAL);
1068 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1069 av_log(hls, AV_LOG_ERROR,
1070 "second_level_segment_index hls_flag requires use_localtime to be true\n");
1071 ret = AVERROR(EINVAL);
1075 const char *proto = avio_find_protocol_name(hls->basename);
1076 int segment_renaming_ok = proto && !strcmp(proto, "file");
1078 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
1079 av_log(hls, AV_LOG_ERROR,
1080 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
1081 ret = AVERROR(EINVAL);
1084 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
1085 av_log(hls, AV_LOG_ERROR,
1086 "second_level_segment_size hls_flag works only with file protocol segment names\n");
1087 ret = AVERROR(EINVAL);
1091 if(hls->has_subtitle) {
1093 if (hls->flags & HLS_SINGLE_FILE)
1094 vtt_pattern = ".vtt";
1095 vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
1096 hls->vtt_basename = av_malloc(vtt_basename_size);
1097 if (!hls->vtt_basename) {
1098 ret = AVERROR(ENOMEM);
1101 hls->vtt_m3u8_name = av_malloc(vtt_basename_size);
1102 if (!hls->vtt_m3u8_name ) {
1103 ret = AVERROR(ENOMEM);
1106 av_strlcpy(hls->vtt_basename, s->filename, vtt_basename_size);
1107 p = strrchr(hls->vtt_basename, '.');
1111 if( hls->subtitle_filename ) {
1112 strcpy(hls->vtt_m3u8_name, hls->subtitle_filename);
1114 strcpy(hls->vtt_m3u8_name, hls->vtt_basename);
1115 av_strlcat(hls->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
1117 av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size);
1120 if ((ret = hls_mux_init(s)) < 0)
1123 if (hls->flags & HLS_APPEND_LIST) {
1124 parse_playlist(s, s->filename);
1125 hls->discontinuity = 1;
1126 if (hls->init_time > 0) {
1127 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
1128 " hls_init_time value will have no effect\n");
1130 hls->recording_time = hls->time * AV_TIME_BASE;
1134 if ((ret = hls_start(s)) < 0)
1137 av_dict_copy(&options, hls->format_options, 0);
1138 ret = avformat_write_header(hls->avf, &options);
1139 if (av_dict_count(options)) {
1140 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
1141 ret = AVERROR(EINVAL);
1144 //av_assert0(s->nb_streams == hls->avf->nb_streams);
1145 for (i = 0; i < s->nb_streams; i++) {
1147 AVStream *outer_st = s->streams[i];
1149 if (hls->max_seg_size > 0) {
1150 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
1151 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
1152 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
1153 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
1154 outer_st->codecpar->bit_rate, hls->max_seg_size);
1158 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
1159 inner_st = hls->avf->streams[i];
1160 else if (hls->vtt_avf)
1161 inner_st = hls->vtt_avf->streams[0];
1163 /* We have a subtitle stream, when the user does not want one */
1167 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
1171 av_dict_free(&options);
1173 av_freep(&hls->basename);
1174 av_freep(&hls->vtt_basename);
1176 avformat_free_context(hls->avf);
1178 avformat_free_context(hls->vtt_avf);
1184 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
1186 HLSContext *hls = s->priv_data;
1187 AVFormatContext *oc = NULL;
1188 AVStream *st = s->streams[pkt->stream_index];
1189 int64_t end_pts = hls->recording_time * hls->number;
1191 int ret, can_split = 1;
1192 int stream_index = 0;
1194 if (hls->sequence - hls->nb_entries > hls->start_sequence && hls->init_time > 0) {
1195 /* reset end_pts, hls->recording_time at end of the init hls list */
1196 int init_list_dur = hls->init_time * hls->nb_entries * AV_TIME_BASE;
1197 int after_init_list_dur = (hls->sequence - hls->nb_entries ) * hls->time * AV_TIME_BASE;
1198 hls->recording_time = hls->time * AV_TIME_BASE;
1199 end_pts = init_list_dur + after_init_list_dur ;
1202 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
1207 stream_index = pkt->stream_index;
1209 if (hls->start_pts == AV_NOPTS_VALUE) {
1210 hls->start_pts = pkt->pts;
1211 hls->end_pts = pkt->pts;
1214 if (hls->has_video) {
1215 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1216 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
1217 is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1219 if (pkt->pts == AV_NOPTS_VALUE)
1220 is_ref_pkt = can_split = 0;
1223 if (hls->new_start) {
1225 hls->duration = (double)(pkt->pts - hls->end_pts)
1226 * st->time_base.num / st->time_base.den;
1227 hls->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1228 av_log(s, AV_LOG_ERROR, "hls->dpp = [%lf]\n", hls->dpp);
1230 hls->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1234 if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
1235 end_pts, AV_TIME_BASE_Q) >= 0) {
1236 int64_t new_start_pos;
1237 av_write_frame(oc, NULL); /* Flush any buffered data */
1239 new_start_pos = avio_tell(hls->avf->pb);
1240 hls->size = new_start_pos - hls->start_pos;
1241 ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
1242 hls->start_pos = new_start_pos;
1246 hls->end_pts = pkt->pts;
1249 if (hls->flags & HLS_SINGLE_FILE) {
1250 if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1251 av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1253 } else if (hls->max_seg_size > 0) {
1254 if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1255 av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1256 if (hls->start_pos >= hls->max_seg_size) {
1258 ff_format_io_close(s, &oc->pb);
1260 ff_format_io_close(s, &hls->vtt_avf->pb);
1263 /* When split segment by byte, the duration is short than hls_time,
1264 * so it is not enough one segment duration as hls_time, */
1269 ff_format_io_close(s, &oc->pb);
1271 ff_format_io_close(s, &hls->vtt_avf->pb);
1279 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE )
1284 if ((ret = hls_window(s, 0)) < 0)
1288 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
1293 static int hls_write_trailer(struct AVFormatContext *s)
1295 HLSContext *hls = s->priv_data;
1296 AVFormatContext *oc = hls->avf;
1297 AVFormatContext *vtt_oc = hls->vtt_avf;
1299 av_write_trailer(oc);
1301 hls->size = avio_tell(hls->avf->pb) - hls->start_pos;
1302 ff_format_io_close(s, &oc->pb);
1303 /* after av_write_trailer, then duration + 1 duration per packet */
1304 hls_append_segment(s, hls, hls->duration + hls->dpp, hls->start_pos, hls->size);
1309 av_write_trailer(vtt_oc);
1310 hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos;
1311 ff_format_io_close(s, &vtt_oc->pb);
1313 av_freep(&hls->basename);
1314 avformat_free_context(oc);
1320 av_freep(&hls->vtt_basename);
1321 av_freep(&hls->vtt_m3u8_name);
1322 avformat_free_context(vtt_oc);
1325 hls_free_segments(hls->segments);
1326 hls_free_segments(hls->old_segments);
1330 #define OFFSET(x) offsetof(HLSContext, x)
1331 #define E AV_OPT_FLAG_ENCODING_PARAM
1332 static const AVOption options[] = {
1333 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
1334 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
1335 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
1336 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
1337 {"hls_ts_options","set hls mpegts list of options for the container format used for hls", OFFSET(format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1338 {"hls_vtt_options","set hls vtt list of options for the container format used for hls", OFFSET(vtt_format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1339 {"hls_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1340 {"hls_allow_cache", "explicitly set whether the client MAY (1) or MUST NOT (0) cache media segments", OFFSET(allowcache), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, E},
1341 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1342 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1343 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1344 {"hls_key_info_file", "file with key URI and key file path", OFFSET(key_info_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1345 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1346 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
1347 {"single_file", "generate a single media file indexed with byte ranges", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SINGLE_FILE }, 0, UINT_MAX, E, "flags"},
1348 {"delete_segments", "delete segment files that are no longer part of the playlist", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DELETE_SEGMENTS }, 0, UINT_MAX, E, "flags"},
1349 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
1350 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
1351 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
1352 {"split_by_time", "split the hls segment by time which user set by hls_time", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SPLIT_BY_TIME }, 0, UINT_MAX, E, "flags"},
1353 {"append_list", "append the new segments into old hls segment list", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_APPEND_LIST }, 0, UINT_MAX, E, "flags"},
1354 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
1355 {"second_level_segment_index", "include segment index in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_INDEX }, 0, UINT_MAX, E, "flags"},
1356 {"second_level_segment_duration", "include segment duration in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_DURATION }, 0, UINT_MAX, E, "flags"},
1357 {"second_level_segment_size", "include segment size in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_SIZE }, 0, UINT_MAX, E, "flags"},
1358 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1359 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1360 {"hls_playlist_type", "set the HLS playlist type", OFFSET(pl_type), AV_OPT_TYPE_INT, {.i64 = PLAYLIST_TYPE_NONE }, 0, PLAYLIST_TYPE_NB-1, E, "pl_type" },
1361 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
1362 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
1363 {"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1368 static const AVClass hls_class = {
1369 .class_name = "hls muxer",
1370 .item_name = av_default_item_name,
1372 .version = LIBAVUTIL_VERSION_INT,
1376 AVOutputFormat ff_hls_muxer = {
1378 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
1379 .extensions = "m3u8",
1380 .priv_data_size = sizeof(HLSContext),
1381 .audio_codec = AV_CODEC_ID_AAC,
1382 .video_codec = AV_CODEC_ID_H264,
1383 .subtitle_codec = AV_CODEC_ID_WEBVTT,
1384 .flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
1385 .write_header = hls_write_header,
1386 .write_packet = hls_write_packet,
1387 .write_trailer = hls_write_trailer,
1388 .priv_class = &hls_class,