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 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
44 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
45 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
46 } StartSequenceSourceType;
49 #define LINE_BUFFER_SIZE 1024
50 #define HLS_MICROSECOND_UNIT 1000000
52 typedef struct HLSSegment {
54 char sub_filename[1024];
55 double duration; /* in seconds */
60 char key_uri[LINE_BUFFER_SIZE + 1];
61 char iv_string[KEYSIZE*2 + 1];
63 struct HLSSegment *next;
66 typedef enum HLSFlags {
67 // Generate a single media file and use byte ranges in the playlist.
68 HLS_SINGLE_FILE = (1 << 0),
69 HLS_DELETE_SEGMENTS = (1 << 1),
70 HLS_ROUND_DURATIONS = (1 << 2),
71 HLS_DISCONT_START = (1 << 3),
72 HLS_OMIT_ENDLIST = (1 << 4),
73 HLS_SPLIT_BY_TIME = (1 << 5),
74 HLS_APPEND_LIST = (1 << 6),
75 HLS_PROGRAM_DATE_TIME = (1 << 7),
76 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
77 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
78 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
88 typedef struct HLSContext {
89 const AVClass *class; // Class for private options.
92 int64_t start_sequence;
93 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
94 AVOutputFormat *oformat;
95 AVOutputFormat *vtt_oformat;
98 AVFormatContext *vtt_avf;
100 float time; // Set by a private option.
101 float init_time; // Set by a private option.
102 int max_nb_segments; // Set by a private option.
103 int wrap; // Set by a private option.
104 uint32_t flags; // enum HLSFlags
105 uint32_t pl_type; // enum PlaylistType
106 char *segment_filename;
108 int use_localtime; ///< flag to expand filename with localtime
109 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
111 int64_t recording_time;
115 double dpp; // duration per packet
118 double duration; // last segment duration computed so far, in seconds
119 int64_t start_pos; // last segment starting position
120 int64_t size; // last segment size
121 int64_t max_seg_size; // every segment file max size
123 int discontinuity_set;
126 HLSSegment *segments;
127 HLSSegment *last_segment;
128 HLSSegment *old_segments;
134 char *format_options_str;
135 char *vtt_format_options_str;
136 char *subtitle_filename;
137 AVDictionary *format_options;
140 char key_file[LINE_BUFFER_SIZE + 1];
141 char key_uri[LINE_BUFFER_SIZE + 1];
142 char key_string[KEYSIZE*2 + 1];
143 char iv_string[KEYSIZE*2 + 1];
144 AVDictionary *vtt_format_options;
148 double initial_prog_date_time;
149 char current_segment_final_filename_fmt[1024]; // when renaming segments
152 static int get_int_from_double(double val)
154 return (int)((val - (int)val) >= 0.001) ? (int)(val + 1) : (int)val;
157 static int mkdir_p(const char *path) {
159 char *temp = av_strdup(path);
163 if (!path || !temp) {
167 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
169 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
173 for ( ; *pos != '\0'; ++pos) {
174 if (*pos == '/' || *pos == '\\') {
177 ret = mkdir(temp, 0755);
182 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
183 ret = mkdir(temp, 0755);
190 static int replace_int_data_in_filename(char *buf, int buf_size, const char *filename, char placeholder, int64_t number)
193 char *q, buf1[20], c;
194 int nd, len, addchar_count;
203 if (c == '%' && *(p+1) == '%') // %%
205 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
208 while (av_isdigit(*(p + addchar_count))) {
209 nd = nd * 10 + *(p + addchar_count) - '0';
213 if (*(p + addchar_count) == placeholder) {
214 len = snprintf(buf1, sizeof(buf1), "%0*"PRId64, (number < 0) ? nd : nd++, number);
215 if (len < 1) // returned error or empty buf1
217 if ((q - buf + len) > buf_size - 1)
219 memcpy(q, buf1, len);
221 p += (addchar_count + 1);
229 while (addchar_count--)
230 if ((q - buf) < buf_size - 1)
242 static int hls_delete_old_segments(HLSContext *hls) {
244 HLSSegment *segment, *previous_segment = NULL;
245 float playlist_duration = 0.0f;
246 int ret = 0, path_size, sub_path_size;
247 char *dirname = NULL, *p, *sub_path;
249 AVDictionary *options = NULL;
250 AVIOContext *out = NULL;
252 segment = hls->segments;
254 playlist_duration += segment->duration;
255 segment = segment->next;
258 segment = hls->old_segments;
260 playlist_duration -= segment->duration;
261 previous_segment = segment;
262 segment = previous_segment->next;
263 if (playlist_duration <= -previous_segment->duration) {
264 previous_segment->next = NULL;
269 if (segment && !hls->use_localtime_mkdir) {
270 if (hls->segment_filename) {
271 dirname = av_strdup(hls->segment_filename);
273 dirname = av_strdup(hls->avf->filename);
276 ret = AVERROR(ENOMEM);
279 p = (char *)av_basename(dirname);
284 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
286 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
287 path = av_malloc(path_size);
289 ret = AVERROR(ENOMEM);
293 if (hls->use_localtime_mkdir)
294 av_strlcpy(path, segment->filename, path_size);
295 else { // segment->filename contains basename only
296 av_strlcpy(path, dirname, path_size);
297 av_strlcat(path, segment->filename, path_size);
301 av_dict_set(&options, "method", "DELETE", 0);
302 if ((ret = hls->avf->io_open(hls->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
304 ff_format_io_close(hls->avf, &out);
305 } else if (unlink(path) < 0) {
306 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
307 path, strerror(errno));
310 if ((segment->sub_filename[0] != '\0')) {
311 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
312 sub_path = av_malloc(sub_path_size);
314 ret = AVERROR(ENOMEM);
318 av_strlcpy(sub_path, dirname, sub_path_size);
319 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
322 av_dict_set(&options, "method", "DELETE", 0);
323 if ((ret = hls->avf->io_open(hls->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
327 ff_format_io_close(hls->avf, &out);
328 } else if (unlink(sub_path) < 0) {
329 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
330 sub_path, strerror(errno));
335 previous_segment = segment;
336 segment = previous_segment->next;
337 av_free(previous_segment);
347 static int hls_encryption_start(AVFormatContext *s)
349 HLSContext *hls = s->priv_data;
352 uint8_t key[KEYSIZE];
354 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
355 av_log(hls, AV_LOG_ERROR,
356 "error opening key info file %s\n", hls->key_info_file);
360 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
361 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
363 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
364 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
366 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
367 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
369 ff_format_io_close(s, &pb);
371 if (!*hls->key_uri) {
372 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
373 return AVERROR(EINVAL);
376 if (!*hls->key_file) {
377 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
378 return AVERROR(EINVAL);
381 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
382 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
386 ret = avio_read(pb, key, sizeof(key));
387 ff_format_io_close(s, &pb);
388 if (ret != sizeof(key)) {
389 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
390 if (ret >= 0 || ret == AVERROR_EOF)
391 ret = AVERROR(EINVAL);
394 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
399 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
401 int len = ff_get_line(s, buf, maxlen);
402 while (len > 0 && av_isspace(buf[len - 1]))
407 static int hls_mux_init(AVFormatContext *s)
409 HLSContext *hls = s->priv_data;
411 AVFormatContext *vtt_oc = NULL;
414 ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
419 oc->oformat = hls->oformat;
420 oc->interrupt_callback = s->interrupt_callback;
421 oc->max_delay = s->max_delay;
422 oc->opaque = s->opaque;
423 oc->io_open = s->io_open;
424 oc->io_close = s->io_close;
425 av_dict_copy(&oc->metadata, s->metadata, 0);
427 if(hls->vtt_oformat) {
428 ret = avformat_alloc_output_context2(&hls->vtt_avf, hls->vtt_oformat, NULL, NULL);
431 vtt_oc = hls->vtt_avf;
432 vtt_oc->oformat = hls->vtt_oformat;
433 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
436 for (i = 0; i < s->nb_streams; i++) {
438 AVFormatContext *loc;
439 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
444 if (!(st = avformat_new_stream(loc, NULL)))
445 return AVERROR(ENOMEM);
446 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
447 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
448 st->time_base = s->streams[i]->time_base;
456 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
459 if (!av_strcasecmp(segment->filename,filename))
461 segment = segment->next;
463 return (HLSSegment *) NULL;
466 /* Create a new segment and append it to the segment list */
467 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration,
468 int64_t pos, int64_t size)
470 HLSSegment *en = av_malloc(sizeof(*en));
471 const char *filename;
475 return AVERROR(ENOMEM);
477 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
478 strlen(hls->current_segment_final_filename_fmt)) {
479 av_strlcpy(hls->avf->filename, hls->current_segment_final_filename_fmt, sizeof(hls->avf->filename));
480 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
481 char * filename = av_strdup(hls->avf->filename); // %%s will be %s after strftime
484 return AVERROR(ENOMEM);
486 if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename),
487 filename, 's', pos + size) < 1) {
488 av_log(hls, AV_LOG_ERROR,
489 "Invalid second level segment filename template '%s', "
490 "you can try to remove second_level_segment_size flag\n",
494 return AVERROR(EINVAL);
498 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
499 char * filename = av_strdup(hls->avf->filename); // %%t will be %t after strftime
502 return AVERROR(ENOMEM);
504 if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename),
505 filename, 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
506 av_log(hls, AV_LOG_ERROR,
507 "Invalid second level segment filename template '%s', "
508 "you can try to remove second_level_segment_time flag\n",
512 return AVERROR(EINVAL);
519 filename = av_basename(hls->avf->filename);
521 if (hls->use_localtime_mkdir) {
522 filename = hls->avf->filename;
524 if (find_segment_by_filename(hls->segments, filename)
525 || find_segment_by_filename(hls->old_segments, filename)) {
526 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
528 av_strlcpy(en->filename, filename, sizeof(en->filename));
530 if(hls->has_subtitle)
531 av_strlcpy(en->sub_filename, av_basename(hls->vtt_avf->filename), sizeof(en->sub_filename));
533 en->sub_filename[0] = '\0';
535 en->duration = duration;
541 if (hls->discontinuity) {
543 hls->discontinuity = 0;
546 if (hls->key_info_file) {
547 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
548 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
554 hls->last_segment->next = en;
556 hls->last_segment = en;
558 // EVENT or VOD playlists imply sliding window cannot be used
559 if (hls->pl_type != PLAYLIST_TYPE_NONE)
560 hls->max_nb_segments = 0;
562 if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
564 hls->initial_prog_date_time += en->duration;
565 hls->segments = en->next;
566 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
567 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
568 en->next = hls->old_segments;
569 hls->old_segments = en;
570 if ((ret = hls_delete_old_segments(hls)) < 0)
577 if (hls->max_seg_size > 0) {
585 static int parse_playlist(AVFormatContext *s, const char *url)
587 HLSContext *hls = s->priv_data;
589 int ret = 0, is_segment = 0;
590 int64_t new_start_pos;
594 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
595 &s->interrupt_callback, NULL,
596 s->protocol_whitelist, s->protocol_blacklist)) < 0)
599 read_chomp_line(in, line, sizeof(line));
600 if (strcmp(line, "#EXTM3U")) {
601 ret = AVERROR_INVALIDDATA;
605 hls->discontinuity = 0;
606 while (!avio_feof(in)) {
607 read_chomp_line(in, line, sizeof(line));
608 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
609 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
610 if (tmp_sequence < hls->sequence)
611 av_log(hls, AV_LOG_VERBOSE,
612 "Found playlist sequence number was smaller """
613 "than specified start sequence number: %"PRId64" < %"PRId64", "
614 "omitting\n", tmp_sequence, hls->start_sequence);
616 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
617 hls->sequence = tmp_sequence;
619 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
621 hls->discontinuity = 1;
622 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
624 hls->duration = atof(ptr);
625 } else if (av_strstart(line, "#", NULL)) {
627 } else if (line[0]) {
630 new_start_pos = avio_tell(hls->avf->pb);
631 hls->size = new_start_pos - hls->start_pos;
632 av_strlcpy(hls->avf->filename, line, sizeof(line));
633 ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
636 hls->start_pos = new_start_pos;
646 static void hls_free_segments(HLSSegment *p)
657 static void set_http_options(AVDictionary **options, HLSContext *c)
660 av_dict_set(options, "method", c->method, 0);
663 static void write_m3u8_head_block(HLSContext *hls, AVIOContext *out, int version,
664 int target_duration, int64_t sequence)
666 avio_printf(out, "#EXTM3U\n");
667 avio_printf(out, "#EXT-X-VERSION:%d\n", version);
668 if (hls->allowcache == 0 || hls->allowcache == 1) {
669 avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
671 avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
672 avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
673 av_log(hls, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
676 static int hls_window(AVFormatContext *s, int last)
678 HLSContext *hls = s->priv_data;
680 int target_duration = 0;
682 AVIOContext *out = NULL;
683 AVIOContext *sub_out = NULL;
684 char temp_filename[1024];
685 int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
687 const char *proto = avio_find_protocol_name(s->filename);
688 int use_rename = proto && !strcmp(proto, "file");
689 static unsigned warned_non_file;
690 char *key_uri = NULL;
691 char *iv_string = NULL;
692 AVDictionary *options = NULL;
693 double prog_date_time = hls->initial_prog_date_time;
694 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
696 if (byterange_mode) {
701 if (!use_rename && !warned_non_file++)
702 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
704 set_http_options(&options, hls);
705 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
706 if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
709 for (en = hls->segments; en; en = en->next) {
710 if (target_duration <= en->duration)
711 target_duration = get_int_from_double(en->duration);
714 hls->discontinuity_set = 0;
715 write_m3u8_head_block(hls, out, version, target_duration, sequence);
716 if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
717 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
718 } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
719 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
722 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){
723 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
724 hls->discontinuity_set = 1;
726 for (en = hls->segments; en; en = en->next) {
727 if (hls->key_info_file && (!key_uri || strcmp(en->key_uri, key_uri) ||
728 av_strcasecmp(en->iv_string, iv_string))) {
729 avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
731 avio_printf(out, ",IV=0x%s", en->iv_string);
732 avio_printf(out, "\n");
733 key_uri = en->key_uri;
734 iv_string = en->iv_string;
738 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
741 if (hls->flags & HLS_ROUND_DURATIONS)
742 avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
744 avio_printf(out, "#EXTINF:%f,\n", en->duration);
746 avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
748 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
749 time_t tt, wrongsecs;
751 struct tm *tm, tmpbuf;
752 char buf0[128], buf1[128];
753 tt = (int64_t)prog_date_time;
754 milli = av_clip(lrint(1000*(prog_date_time - tt)), 0, 999);
755 tm = localtime_r(&tt, &tmpbuf);
756 strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm);
757 if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') {
758 int tz_min, dst = tm->tm_isdst;
759 tm = gmtime_r(&tt, &tmpbuf);
761 wrongsecs = mktime(tm);
762 tz_min = (abs(wrongsecs - tt) + 30) / 60;
763 snprintf(buf1, sizeof(buf1),
765 wrongsecs <= tt ? '+' : '-',
769 avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1);
770 prog_date_time += en->duration;
773 avio_printf(out, "%s", hls->baseurl);
774 avio_printf(out, "%s\n", en->filename);
777 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
778 avio_printf(out, "#EXT-X-ENDLIST\n");
780 if( hls->vtt_m3u8_name ) {
781 if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
783 write_m3u8_head_block(hls, sub_out, version, target_duration, sequence);
785 for (en = hls->segments; en; en = en->next) {
786 avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
788 avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
791 avio_printf(sub_out, "%s", hls->baseurl);
792 avio_printf(sub_out, "%s\n", en->sub_filename);
796 avio_printf(sub_out, "#EXT-X-ENDLIST\n");
801 av_dict_free(&options);
802 ff_format_io_close(s, &out);
803 ff_format_io_close(s, &sub_out);
804 if (ret >= 0 && use_rename)
805 ff_rename(temp_filename, s->filename, s);
809 static int hls_start(AVFormatContext *s)
811 HLSContext *c = s->priv_data;
812 AVFormatContext *oc = c->avf;
813 AVFormatContext *vtt_oc = c->vtt_avf;
814 AVDictionary *options = NULL;
815 char *filename, iv_string[KEYSIZE*2 + 1];
818 if (c->flags & HLS_SINGLE_FILE) {
819 av_strlcpy(oc->filename, c->basename,
820 sizeof(oc->filename));
822 av_strlcpy(vtt_oc->filename, c->vtt_basename,
823 sizeof(vtt_oc->filename));
824 } else if (c->max_seg_size > 0) {
825 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
826 c->basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
827 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", c->basename);
828 return AVERROR(EINVAL);
831 if (c->use_localtime) {
833 struct tm *tm, tmpbuf;
835 tm = localtime_r(&now0, &tmpbuf);
836 if (!strftime(oc->filename, sizeof(oc->filename), c->basename, tm)) {
837 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
838 return AVERROR(EINVAL);
840 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
841 char * filename = av_strdup(oc->filename); // %%d will be %d after strftime
843 return AVERROR(ENOMEM);
844 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
845 filename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
846 av_log(c, AV_LOG_ERROR,
847 "Invalid second level segment filename template '%s', "
848 "you can try to remove second_level_segment_index flag\n",
851 return AVERROR(EINVAL);
855 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
856 av_strlcpy(c->current_segment_final_filename_fmt, oc->filename,
857 sizeof(c->current_segment_final_filename_fmt));
858 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
859 char * filename = av_strdup(oc->filename); // %%s will be %s after strftime
861 return AVERROR(ENOMEM);
862 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 's', 0) < 1) {
863 av_log(c, AV_LOG_ERROR,
864 "Invalid second level segment filename template '%s', "
865 "you can try to remove second_level_segment_size flag\n",
868 return AVERROR(EINVAL);
872 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
873 char * filename = av_strdup(oc->filename); // %%t will be %t after strftime
875 return AVERROR(ENOMEM);
876 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 't', 0) < 1) {
877 av_log(c, AV_LOG_ERROR,
878 "Invalid second level segment filename template '%s', "
879 "you can try to remove second_level_segment_time flag\n",
882 return AVERROR(EINVAL);
887 if (c->use_localtime_mkdir) {
889 char *fn_copy = av_strdup(oc->filename);
891 return AVERROR(ENOMEM);
893 dir = av_dirname(fn_copy);
894 if (mkdir_p(dir) == -1 && errno != EEXIST) {
895 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
897 return AVERROR(errno);
901 } else if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
902 c->basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
903 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", c->basename);
904 return AVERROR(EINVAL);
906 if( c->vtt_basename) {
907 if (replace_int_data_in_filename(vtt_oc->filename, sizeof(vtt_oc->filename),
908 c->vtt_basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
909 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename);
910 return AVERROR(EINVAL);
916 set_http_options(&options, c);
918 if (c->key_info_file) {
919 if ((err = hls_encryption_start(s)) < 0)
921 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
924 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
926 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, c->sequence);
927 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
930 filename = av_asprintf("crypto:%s", oc->filename);
932 err = AVERROR(ENOMEM);
935 err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options);
937 av_dict_free(&options);
941 if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
943 if (c->vtt_basename) {
944 set_http_options(&options, c);
945 if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
948 av_dict_free(&options);
950 /* We only require one PAT/PMT per segment. */
951 if (oc->oformat->priv_class && oc->priv_data) {
954 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
956 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
957 av_opt_set(oc->priv_data, "sdt_period", period, 0);
958 av_opt_set(oc->priv_data, "pat_period", period, 0);
961 if (c->vtt_basename) {
962 err = avformat_write_header(vtt_oc,NULL);
969 av_dict_free(&options);
974 static const char * get_default_pattern_localtime_fmt(void)
977 time_t t = time(NULL);
979 p = localtime_r(&t, &tmbuf);
980 // no %s support when strftime returned error or left format string unchanged
981 return (!strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
984 static int hls_write_header(AVFormatContext *s)
986 HLSContext *hls = s->priv_data;
989 const char *pattern = "%d.ts";
990 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt();
991 const char *vtt_pattern = "%d.vtt";
992 AVDictionary *options = NULL;
994 int vtt_basename_size;
996 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH || hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
997 time_t t = time(NULL); // we will need it in either case
998 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
999 hls->start_sequence = (int64_t)t;
1000 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
1002 struct tm *p, tmbuf;
1003 if (!(p = localtime_r(&t, &tmbuf)))
1004 return AVERROR(ENOMEM);
1005 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
1006 return AVERROR(ENOMEM);
1007 hls->start_sequence = strtoll(b, NULL, 10);
1009 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
1012 hls->sequence = hls->start_sequence;
1013 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
1014 hls->start_pts = AV_NOPTS_VALUE;
1015 hls->current_segment_final_filename_fmt[0] = '\0';
1017 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
1020 hls->initial_prog_date_time = now0;
1023 if (hls->format_options_str) {
1024 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
1026 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
1031 for (i = 0; i < s->nb_streams; i++) {
1033 s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1034 hls->has_subtitle +=
1035 s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
1038 if (hls->has_video > 1)
1039 av_log(s, AV_LOG_WARNING,
1040 "More than a single video stream present, "
1041 "expect issues decoding it.\n");
1043 hls->oformat = av_guess_format("mpegts", NULL, NULL);
1045 if (!hls->oformat) {
1046 ret = AVERROR_MUXER_NOT_FOUND;
1050 if(hls->has_subtitle) {
1051 hls->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
1052 if (!hls->oformat) {
1053 ret = AVERROR_MUXER_NOT_FOUND;
1058 if (hls->segment_filename) {
1059 hls->basename = av_strdup(hls->segment_filename);
1060 if (!hls->basename) {
1061 ret = AVERROR(ENOMEM);
1065 if (hls->flags & HLS_SINGLE_FILE)
1068 if (hls->use_localtime) {
1069 basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
1071 basename_size = strlen(s->filename) + strlen(pattern) + 1;
1073 hls->basename = av_malloc(basename_size);
1074 if (!hls->basename) {
1075 ret = AVERROR(ENOMEM);
1079 av_strlcpy(hls->basename, s->filename, basename_size);
1081 p = strrchr(hls->basename, '.');
1084 if (hls->use_localtime) {
1085 av_strlcat(hls->basename, pattern_localtime_fmt, basename_size);
1087 av_strlcat(hls->basename, pattern, basename_size);
1090 if (!hls->use_localtime) {
1091 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1092 av_log(hls, AV_LOG_ERROR,
1093 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
1094 ret = AVERROR(EINVAL);
1097 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1098 av_log(hls, AV_LOG_ERROR,
1099 "second_level_segment_size hls_flag requires use_localtime to be true\n");
1100 ret = AVERROR(EINVAL);
1103 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1104 av_log(hls, AV_LOG_ERROR,
1105 "second_level_segment_index hls_flag requires use_localtime to be true\n");
1106 ret = AVERROR(EINVAL);
1110 const char *proto = avio_find_protocol_name(hls->basename);
1111 int segment_renaming_ok = proto && !strcmp(proto, "file");
1113 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
1114 av_log(hls, AV_LOG_ERROR,
1115 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
1116 ret = AVERROR(EINVAL);
1119 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
1120 av_log(hls, AV_LOG_ERROR,
1121 "second_level_segment_size hls_flag works only with file protocol segment names\n");
1122 ret = AVERROR(EINVAL);
1126 if(hls->has_subtitle) {
1128 if (hls->flags & HLS_SINGLE_FILE)
1129 vtt_pattern = ".vtt";
1130 vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
1131 hls->vtt_basename = av_malloc(vtt_basename_size);
1132 if (!hls->vtt_basename) {
1133 ret = AVERROR(ENOMEM);
1136 hls->vtt_m3u8_name = av_malloc(vtt_basename_size);
1137 if (!hls->vtt_m3u8_name ) {
1138 ret = AVERROR(ENOMEM);
1141 av_strlcpy(hls->vtt_basename, s->filename, vtt_basename_size);
1142 p = strrchr(hls->vtt_basename, '.');
1146 if( hls->subtitle_filename ) {
1147 strcpy(hls->vtt_m3u8_name, hls->subtitle_filename);
1149 strcpy(hls->vtt_m3u8_name, hls->vtt_basename);
1150 av_strlcat(hls->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
1152 av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size);
1155 if ((ret = hls_mux_init(s)) < 0)
1158 if (hls->flags & HLS_APPEND_LIST) {
1159 parse_playlist(s, s->filename);
1160 hls->discontinuity = 1;
1161 if (hls->init_time > 0) {
1162 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
1163 " hls_init_time value will have no effect\n");
1165 hls->recording_time = hls->time * AV_TIME_BASE;
1169 if ((ret = hls_start(s)) < 0)
1172 av_dict_copy(&options, hls->format_options, 0);
1173 ret = avformat_write_header(hls->avf, &options);
1174 if (av_dict_count(options)) {
1175 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
1176 ret = AVERROR(EINVAL);
1179 //av_assert0(s->nb_streams == hls->avf->nb_streams);
1180 for (i = 0; i < s->nb_streams; i++) {
1182 AVStream *outer_st = s->streams[i];
1184 if (hls->max_seg_size > 0) {
1185 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
1186 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
1187 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
1188 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
1189 outer_st->codecpar->bit_rate, hls->max_seg_size);
1193 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
1194 inner_st = hls->avf->streams[i];
1195 else if (hls->vtt_avf)
1196 inner_st = hls->vtt_avf->streams[0];
1198 /* We have a subtitle stream, when the user does not want one */
1202 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
1206 av_dict_free(&options);
1208 av_freep(&hls->basename);
1209 av_freep(&hls->vtt_basename);
1211 avformat_free_context(hls->avf);
1213 avformat_free_context(hls->vtt_avf);
1219 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
1221 HLSContext *hls = s->priv_data;
1222 AVFormatContext *oc = NULL;
1223 AVStream *st = s->streams[pkt->stream_index];
1224 int64_t end_pts = hls->recording_time * hls->number;
1226 int ret, can_split = 1;
1227 int stream_index = 0;
1229 if (hls->sequence - hls->nb_entries > hls->start_sequence && hls->init_time > 0) {
1230 /* reset end_pts, hls->recording_time at end of the init hls list */
1231 int init_list_dur = hls->init_time * hls->nb_entries * AV_TIME_BASE;
1232 int after_init_list_dur = (hls->sequence - hls->nb_entries ) * hls->time * AV_TIME_BASE;
1233 hls->recording_time = hls->time * AV_TIME_BASE;
1234 end_pts = init_list_dur + after_init_list_dur ;
1237 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
1242 stream_index = pkt->stream_index;
1244 if (hls->start_pts == AV_NOPTS_VALUE) {
1245 hls->start_pts = pkt->pts;
1246 hls->end_pts = pkt->pts;
1249 if (hls->has_video) {
1250 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1251 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
1252 is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1254 if (pkt->pts == AV_NOPTS_VALUE)
1255 is_ref_pkt = can_split = 0;
1258 if (hls->new_start) {
1260 hls->duration = (double)(pkt->pts - hls->end_pts)
1261 * st->time_base.num / st->time_base.den;
1262 hls->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1264 hls->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1268 if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
1269 end_pts, AV_TIME_BASE_Q) >= 0) {
1270 int64_t new_start_pos;
1271 char *old_filename = av_strdup(hls->avf->filename);
1273 if (!old_filename) {
1274 return AVERROR(ENOMEM);
1277 av_write_frame(oc, NULL); /* Flush any buffered data */
1279 new_start_pos = avio_tell(hls->avf->pb);
1280 hls->size = new_start_pos - hls->start_pos;
1281 ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
1282 hls->start_pos = new_start_pos;
1284 av_free(old_filename);
1288 hls->end_pts = pkt->pts;
1291 if (hls->flags & HLS_SINGLE_FILE) {
1292 if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1293 av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1295 } else if (hls->max_seg_size > 0) {
1296 if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1297 av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1298 if (hls->start_pos >= hls->max_seg_size) {
1300 ff_format_io_close(s, &oc->pb);
1301 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
1302 strlen(hls->current_segment_final_filename_fmt)) {
1303 ff_rename(old_filename, hls->avf->filename, hls);
1306 ff_format_io_close(s, &hls->vtt_avf->pb);
1309 /* When split segment by byte, the duration is short than hls_time,
1310 * so it is not enough one segment duration as hls_time, */
1315 ff_format_io_close(s, &oc->pb);
1316 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
1317 strlen(hls->current_segment_final_filename_fmt)) {
1318 ff_rename(old_filename, hls->avf->filename, hls);
1321 ff_format_io_close(s, &hls->vtt_avf->pb);
1327 av_free(old_filename);
1331 if ((ret = hls_window(s, 0)) < 0) {
1332 av_free(old_filename);
1337 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
1342 static int hls_write_trailer(struct AVFormatContext *s)
1344 HLSContext *hls = s->priv_data;
1345 AVFormatContext *oc = hls->avf;
1346 AVFormatContext *vtt_oc = hls->vtt_avf;
1347 char *old_filename = av_strdup(hls->avf->filename);
1349 if (!old_filename) {
1350 return AVERROR(ENOMEM);
1354 av_write_trailer(oc);
1356 hls->size = avio_tell(hls->avf->pb) - hls->start_pos;
1357 ff_format_io_close(s, &oc->pb);
1358 /* after av_write_trailer, then duration + 1 duration per packet */
1359 hls_append_segment(s, hls, hls->duration + hls->dpp, hls->start_pos, hls->size);
1362 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
1363 strlen(hls->current_segment_final_filename_fmt)) {
1364 ff_rename(old_filename, hls->avf->filename, hls);
1369 av_write_trailer(vtt_oc);
1370 hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos;
1371 ff_format_io_close(s, &vtt_oc->pb);
1373 av_freep(&hls->basename);
1374 avformat_free_context(oc);
1380 av_freep(&hls->vtt_basename);
1381 av_freep(&hls->vtt_m3u8_name);
1382 avformat_free_context(vtt_oc);
1385 hls_free_segments(hls->segments);
1386 hls_free_segments(hls->old_segments);
1387 av_free(old_filename);
1391 #define OFFSET(x) offsetof(HLSContext, x)
1392 #define E AV_OPT_FLAG_ENCODING_PARAM
1393 static const AVOption options[] = {
1394 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
1395 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
1396 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
1397 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
1398 {"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},
1399 {"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},
1400 {"hls_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1401 {"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},
1402 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1403 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1404 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1405 {"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},
1406 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1407 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
1408 {"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"},
1409 {"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"},
1410 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
1411 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
1412 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
1413 {"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"},
1414 {"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"},
1415 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
1416 {"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"},
1417 {"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"},
1418 {"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"},
1419 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1420 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1421 {"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" },
1422 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
1423 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
1424 {"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1425 {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, 0, HLS_START_SEQUENCE_AS_FORMATTED_DATETIME, E, "start_sequence_source_type" },
1426 {"generic", "start_number value (default)", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
1427 {"epoch", "seconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
1428 {"datetime", "current datetime as YYYYMMDDhhmmss", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_FORMATTED_DATETIME }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
1432 static const AVClass hls_class = {
1433 .class_name = "hls muxer",
1434 .item_name = av_default_item_name,
1436 .version = LIBAVUTIL_VERSION_INT,
1440 AVOutputFormat ff_hls_muxer = {
1442 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
1443 .extensions = "m3u8",
1444 .priv_data_size = sizeof(HLSContext),
1445 .audio_codec = AV_CODEC_ID_AAC,
1446 .video_codec = AV_CODEC_ID_H264,
1447 .subtitle_codec = AV_CODEC_ID_WEBVTT,
1448 .flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
1449 .write_header = hls_write_header,
1450 .write_packet = hls_write_packet,
1451 .write_trailer = hls_write_trailer,
1452 .priv_class = &hls_class,