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
51 typedef struct HLSSegment {
53 char sub_filename[1024];
54 double duration; /* in seconds */
59 char key_uri[LINE_BUFFER_SIZE + 1];
60 char iv_string[KEYSIZE*2 + 1];
62 struct HLSSegment *next;
65 typedef enum HLSFlags {
66 // Generate a single media file and use byte ranges in the playlist.
67 HLS_SINGLE_FILE = (1 << 0),
68 HLS_DELETE_SEGMENTS = (1 << 1),
69 HLS_ROUND_DURATIONS = (1 << 2),
70 HLS_DISCONT_START = (1 << 3),
71 HLS_OMIT_ENDLIST = (1 << 4),
72 HLS_SPLIT_BY_TIME = (1 << 5),
73 HLS_APPEND_LIST = (1 << 6),
74 HLS_PROGRAM_DATE_TIME = (1 << 7),
75 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
76 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
77 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
87 typedef struct HLSContext {
88 const AVClass *class; // Class for private options.
91 int64_t start_sequence;
92 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
93 AVOutputFormat *oformat;
94 AVOutputFormat *vtt_oformat;
97 AVFormatContext *vtt_avf;
99 float time; // Set by a private option.
100 float init_time; // Set by a private option.
101 int max_nb_segments; // Set by a private option.
102 int wrap; // Set by a private option.
103 uint32_t flags; // enum HLSFlags
104 uint32_t pl_type; // enum PlaylistType
105 char *segment_filename;
107 int use_localtime; ///< flag to expand filename with localtime
108 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
110 int64_t recording_time;
114 double dpp; // duration per packet
117 double duration; // last segment duration computed so far, in seconds
118 int64_t start_pos; // last segment starting position
119 int64_t size; // last segment size
120 int64_t max_seg_size; // every segment file max size
122 int discontinuity_set;
125 HLSSegment *segments;
126 HLSSegment *last_segment;
127 HLSSegment *old_segments;
133 char *format_options_str;
134 char *vtt_format_options_str;
135 char *subtitle_filename;
136 AVDictionary *format_options;
139 char key_file[LINE_BUFFER_SIZE + 1];
140 char key_uri[LINE_BUFFER_SIZE + 1];
141 char key_string[KEYSIZE*2 + 1];
142 char iv_string[KEYSIZE*2 + 1];
143 AVDictionary *vtt_format_options;
147 double initial_prog_date_time;
148 char current_segment_final_filename_fmt[1024]; // when renaming segments
151 static int get_int_from_double(double val)
153 return (int)((val - (int)val) >= 0.001) ? (int)(val + 1) : (int)val;
156 static int mkdir_p(const char *path) {
158 char *temp = av_strdup(path);
162 if (!path || !temp) {
166 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
168 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
172 for ( ; *pos != '\0'; ++pos) {
173 if (*pos == '/' || *pos == '\\') {
176 ret = mkdir(temp, 0755);
181 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
182 ret = mkdir(temp, 0755);
189 static int replace_int_data_in_filename(char *buf, int buf_size, const char *filename, char placeholder, int64_t number)
192 char *q, buf1[20], c;
193 int nd, len, addchar_count;
202 if (c == '%' && *(p+1) == '%') // %%
204 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
207 while (av_isdigit(*(p + addchar_count))) {
208 nd = nd * 10 + *(p + addchar_count) - '0';
212 if (*(p + addchar_count) == placeholder) {
213 len = snprintf(buf1, sizeof(buf1), "%0*"PRId64, (number < 0) ? nd : nd++, number);
214 if (len < 1) // returned error or empty buf1
216 if ((q - buf + len) > buf_size - 1)
218 memcpy(q, buf1, len);
220 p += (addchar_count + 1);
228 while (addchar_count--)
229 if ((q - buf) < buf_size - 1)
241 static int hls_delete_old_segments(HLSContext *hls) {
243 HLSSegment *segment, *previous_segment = NULL;
244 float playlist_duration = 0.0f;
245 int ret = 0, path_size, sub_path_size;
246 char *dirname = NULL, *p, *sub_path;
249 segment = hls->segments;
251 playlist_duration += segment->duration;
252 segment = segment->next;
255 segment = hls->old_segments;
257 playlist_duration -= segment->duration;
258 previous_segment = segment;
259 segment = previous_segment->next;
260 if (playlist_duration <= -previous_segment->duration) {
261 previous_segment->next = NULL;
266 if (segment && !hls->use_localtime_mkdir) {
267 if (hls->segment_filename) {
268 dirname = av_strdup(hls->segment_filename);
270 dirname = av_strdup(hls->avf->filename);
273 ret = AVERROR(ENOMEM);
276 p = (char *)av_basename(dirname);
281 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
283 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
284 path = av_malloc(path_size);
286 ret = AVERROR(ENOMEM);
290 if (hls->use_localtime_mkdir)
291 av_strlcpy(path, segment->filename, path_size);
292 else { // segment->filename contains basename only
293 av_strlcpy(path, dirname, path_size);
294 av_strlcat(path, segment->filename, path_size);
297 if (unlink(path) < 0) {
298 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
299 path, strerror(errno));
302 if ((segment->sub_filename[0] != '\0')) {
303 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
304 sub_path = av_malloc(sub_path_size);
306 ret = AVERROR(ENOMEM);
310 av_strlcpy(sub_path, dirname, sub_path_size);
311 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
312 if (unlink(sub_path) < 0) {
313 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
314 sub_path, strerror(errno));
319 previous_segment = segment;
320 segment = previous_segment->next;
321 av_free(previous_segment);
331 static int hls_encryption_start(AVFormatContext *s)
333 HLSContext *hls = s->priv_data;
336 uint8_t key[KEYSIZE];
338 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
339 av_log(hls, AV_LOG_ERROR,
340 "error opening key info file %s\n", hls->key_info_file);
344 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
345 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
347 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
348 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
350 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
351 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
353 ff_format_io_close(s, &pb);
355 if (!*hls->key_uri) {
356 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
357 return AVERROR(EINVAL);
360 if (!*hls->key_file) {
361 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
362 return AVERROR(EINVAL);
365 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
366 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
370 ret = avio_read(pb, key, sizeof(key));
371 ff_format_io_close(s, &pb);
372 if (ret != sizeof(key)) {
373 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
374 if (ret >= 0 || ret == AVERROR_EOF)
375 ret = AVERROR(EINVAL);
378 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
383 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
385 int len = ff_get_line(s, buf, maxlen);
386 while (len > 0 && av_isspace(buf[len - 1]))
391 static int hls_mux_init(AVFormatContext *s)
393 HLSContext *hls = s->priv_data;
395 AVFormatContext *vtt_oc = NULL;
398 ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
403 oc->oformat = hls->oformat;
404 oc->interrupt_callback = s->interrupt_callback;
405 oc->max_delay = s->max_delay;
406 oc->opaque = s->opaque;
407 oc->io_open = s->io_open;
408 oc->io_close = s->io_close;
409 av_dict_copy(&oc->metadata, s->metadata, 0);
411 if(hls->vtt_oformat) {
412 ret = avformat_alloc_output_context2(&hls->vtt_avf, hls->vtt_oformat, NULL, NULL);
415 vtt_oc = hls->vtt_avf;
416 vtt_oc->oformat = hls->vtt_oformat;
417 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
420 for (i = 0; i < s->nb_streams; i++) {
422 AVFormatContext *loc;
423 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
428 if (!(st = avformat_new_stream(loc, NULL)))
429 return AVERROR(ENOMEM);
430 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
431 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
432 st->time_base = s->streams[i]->time_base;
440 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
443 if (!av_strcasecmp(segment->filename,filename))
445 segment = segment->next;
447 return (HLSSegment *) NULL;
450 /* Create a new segment and append it to the segment list */
451 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration,
452 int64_t pos, int64_t size)
454 HLSSegment *en = av_malloc(sizeof(*en));
455 const char *filename;
459 return AVERROR(ENOMEM);
461 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
462 strlen(hls->current_segment_final_filename_fmt)) {
463 char * old_filename = av_strdup(hls->avf->filename); // %%s will be %s after strftime
466 return AVERROR(ENOMEM);
468 av_strlcpy(hls->avf->filename, hls->current_segment_final_filename_fmt, sizeof(hls->avf->filename));
469 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
470 char * filename = av_strdup(hls->avf->filename); // %%s will be %s after strftime
472 av_free(old_filename);
474 return AVERROR(ENOMEM);
476 if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename),
477 filename, 's', pos + size) < 1) {
478 av_log(hls, AV_LOG_ERROR,
479 "Invalid second level segment filename template '%s', "
480 "you can try to remove second_level_segment_size flag\n",
483 av_free(old_filename);
485 return AVERROR(EINVAL);
489 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
490 char * filename = av_strdup(hls->avf->filename); // %%t will be %t after strftime
492 av_free(old_filename);
494 return AVERROR(ENOMEM);
496 if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename),
497 filename, 't', (int64_t)round(1000000 * duration)) < 1) {
498 av_log(hls, AV_LOG_ERROR,
499 "Invalid second level segment filename template '%s', "
500 "you can try to remove second_level_segment_time flag\n",
503 av_free(old_filename);
505 return AVERROR(EINVAL);
509 ff_rename(old_filename, hls->avf->filename, hls);
510 av_free(old_filename);
514 filename = av_basename(hls->avf->filename);
516 if (hls->use_localtime_mkdir) {
517 filename = hls->avf->filename;
519 if (find_segment_by_filename(hls->segments, filename)
520 || find_segment_by_filename(hls->old_segments, filename)) {
521 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
523 av_strlcpy(en->filename, filename, sizeof(en->filename));
525 if(hls->has_subtitle)
526 av_strlcpy(en->sub_filename, av_basename(hls->vtt_avf->filename), sizeof(en->sub_filename));
528 en->sub_filename[0] = '\0';
530 en->duration = duration;
536 if (hls->discontinuity) {
538 hls->discontinuity = 0;
541 if (hls->key_info_file) {
542 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
543 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
549 hls->last_segment->next = en;
551 hls->last_segment = en;
553 // EVENT or VOD playlists imply sliding window cannot be used
554 if (hls->pl_type != PLAYLIST_TYPE_NONE)
555 hls->max_nb_segments = 0;
557 if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
559 hls->initial_prog_date_time += en->duration;
560 hls->segments = en->next;
561 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
562 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
563 en->next = hls->old_segments;
564 hls->old_segments = en;
565 if ((ret = hls_delete_old_segments(hls)) < 0)
572 if (hls->max_seg_size > 0) {
580 static int parse_playlist(AVFormatContext *s, const char *url)
582 HLSContext *hls = s->priv_data;
584 int ret = 0, is_segment = 0;
585 int64_t new_start_pos;
589 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
590 &s->interrupt_callback, NULL,
591 s->protocol_whitelist, s->protocol_blacklist)) < 0)
594 read_chomp_line(in, line, sizeof(line));
595 if (strcmp(line, "#EXTM3U")) {
596 ret = AVERROR_INVALIDDATA;
600 hls->discontinuity = 0;
601 while (!avio_feof(in)) {
602 read_chomp_line(in, line, sizeof(line));
603 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
604 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
605 if (tmp_sequence < hls->sequence)
606 av_log(hls, AV_LOG_VERBOSE,
607 "Found playlist sequence number was smaller """
608 "than specified start sequence number: %"PRId64" < %"PRId64", "
609 "omitting\n", tmp_sequence, hls->start_sequence);
611 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
612 hls->sequence = tmp_sequence;
614 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
616 hls->discontinuity = 1;
617 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
619 hls->duration = atof(ptr);
620 } else if (av_strstart(line, "#", NULL)) {
622 } else if (line[0]) {
625 new_start_pos = avio_tell(hls->avf->pb);
626 hls->size = new_start_pos - hls->start_pos;
627 av_strlcpy(hls->avf->filename, line, sizeof(line));
628 ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
631 hls->start_pos = new_start_pos;
641 static void hls_free_segments(HLSSegment *p)
652 static void set_http_options(AVDictionary **options, HLSContext *c)
655 av_dict_set(options, "method", c->method, 0);
658 static int hls_window(AVFormatContext *s, int last)
660 HLSContext *hls = s->priv_data;
662 int target_duration = 0;
664 AVIOContext *out = NULL;
665 AVIOContext *sub_out = NULL;
666 char temp_filename[1024];
667 int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
669 const char *proto = avio_find_protocol_name(s->filename);
670 int use_rename = proto && !strcmp(proto, "file");
671 static unsigned warned_non_file;
672 char *key_uri = NULL;
673 char *iv_string = NULL;
674 AVDictionary *options = NULL;
675 double prog_date_time = hls->initial_prog_date_time;
676 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
678 if (byterange_mode) {
683 if (!use_rename && !warned_non_file++)
684 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
686 set_http_options(&options, hls);
687 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
688 if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
691 for (en = hls->segments; en; en = en->next) {
692 if (target_duration <= en->duration)
693 target_duration = get_int_from_double(en->duration);
696 hls->discontinuity_set = 0;
697 avio_printf(out, "#EXTM3U\n");
698 avio_printf(out, "#EXT-X-VERSION:%d\n", version);
699 if (hls->allowcache == 0 || hls->allowcache == 1) {
700 avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
702 avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
703 avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
704 if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
705 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
706 } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
707 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
710 av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
712 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){
713 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
714 hls->discontinuity_set = 1;
716 for (en = hls->segments; en; en = en->next) {
717 if (hls->key_info_file && (!key_uri || strcmp(en->key_uri, key_uri) ||
718 av_strcasecmp(en->iv_string, iv_string))) {
719 avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
721 avio_printf(out, ",IV=0x%s", en->iv_string);
722 avio_printf(out, "\n");
723 key_uri = en->key_uri;
724 iv_string = en->iv_string;
728 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
731 if (hls->flags & HLS_ROUND_DURATIONS)
732 avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
734 avio_printf(out, "#EXTINF:%f,\n", en->duration);
736 avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
738 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
739 time_t tt, wrongsecs;
741 struct tm *tm, tmpbuf;
742 char buf0[128], buf1[128];
743 tt = (int64_t)prog_date_time;
744 milli = av_clip(lrint(1000*(prog_date_time - tt)), 0, 999);
745 tm = localtime_r(&tt, &tmpbuf);
746 strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm);
747 if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') {
748 int tz_min, dst = tm->tm_isdst;
749 tm = gmtime_r(&tt, &tmpbuf);
751 wrongsecs = mktime(tm);
752 tz_min = (abs(wrongsecs - tt) + 30) / 60;
753 snprintf(buf1, sizeof(buf1),
755 wrongsecs <= tt ? '+' : '-',
759 avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1);
760 prog_date_time += en->duration;
763 avio_printf(out, "%s", hls->baseurl);
764 avio_printf(out, "%s\n", en->filename);
767 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
768 avio_printf(out, "#EXT-X-ENDLIST\n");
770 if( hls->vtt_m3u8_name ) {
771 if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
773 avio_printf(sub_out, "#EXTM3U\n");
774 avio_printf(sub_out, "#EXT-X-VERSION:%d\n", version);
775 if (hls->allowcache == 0 || hls->allowcache == 1) {
776 avio_printf(sub_out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
778 avio_printf(sub_out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
779 avio_printf(sub_out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
781 av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
784 for (en = hls->segments; en; en = en->next) {
785 avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
787 avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
790 avio_printf(sub_out, "%s", hls->baseurl);
791 avio_printf(sub_out, "%s\n", en->sub_filename);
795 avio_printf(sub_out, "#EXT-X-ENDLIST\n");
800 av_dict_free(&options);
801 ff_format_io_close(s, &out);
802 ff_format_io_close(s, &sub_out);
803 if (ret >= 0 && use_rename)
804 ff_rename(temp_filename, s->filename, s);
808 static int hls_start(AVFormatContext *s)
810 HLSContext *c = s->priv_data;
811 AVFormatContext *oc = c->avf;
812 AVFormatContext *vtt_oc = c->vtt_avf;
813 AVDictionary *options = NULL;
814 char *filename, iv_string[KEYSIZE*2 + 1];
817 if (c->flags & HLS_SINGLE_FILE) {
818 av_strlcpy(oc->filename, c->basename,
819 sizeof(oc->filename));
821 av_strlcpy(vtt_oc->filename, c->vtt_basename,
822 sizeof(vtt_oc->filename));
823 } else if (c->max_seg_size > 0) {
824 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
825 c->basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
826 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", c->basename);
827 return AVERROR(EINVAL);
830 if (c->use_localtime) {
832 struct tm *tm, tmpbuf;
834 tm = localtime_r(&now0, &tmpbuf);
835 if (!strftime(oc->filename, sizeof(oc->filename), c->basename, tm)) {
836 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
837 return AVERROR(EINVAL);
839 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
840 char * filename = av_strdup(oc->filename); // %%d will be %d after strftime
842 return AVERROR(ENOMEM);
843 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
844 filename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
845 av_log(c, AV_LOG_ERROR,
846 "Invalid second level segment filename template '%s', "
847 "you can try to remove second_level_segment_index flag\n",
850 return AVERROR(EINVAL);
854 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
855 av_strlcpy(c->current_segment_final_filename_fmt, oc->filename,
856 sizeof(c->current_segment_final_filename_fmt));
857 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
858 char * filename = av_strdup(oc->filename); // %%s will be %s after strftime
860 return AVERROR(ENOMEM);
861 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 's', 0) < 1) {
862 av_log(c, AV_LOG_ERROR,
863 "Invalid second level segment filename template '%s', "
864 "you can try to remove second_level_segment_size flag\n",
867 return AVERROR(EINVAL);
871 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
872 char * filename = av_strdup(oc->filename); // %%t will be %t after strftime
874 return AVERROR(ENOMEM);
875 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 't', 0) < 1) {
876 av_log(c, AV_LOG_ERROR,
877 "Invalid second level segment filename template '%s', "
878 "you can try to remove second_level_segment_time flag\n",
881 return AVERROR(EINVAL);
886 if (c->use_localtime_mkdir) {
888 char *fn_copy = av_strdup(oc->filename);
890 return AVERROR(ENOMEM);
892 dir = av_dirname(fn_copy);
893 if (mkdir_p(dir) == -1 && errno != EEXIST) {
894 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
896 return AVERROR(errno);
900 } else if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
901 c->basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
902 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", c->basename);
903 return AVERROR(EINVAL);
905 if( c->vtt_basename) {
906 if (replace_int_data_in_filename(vtt_oc->filename, sizeof(vtt_oc->filename),
907 c->vtt_basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
908 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename);
909 return AVERROR(EINVAL);
915 set_http_options(&options, c);
917 if (c->key_info_file) {
918 if ((err = hls_encryption_start(s)) < 0)
920 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
923 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
925 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, c->sequence);
926 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
929 filename = av_asprintf("crypto:%s", oc->filename);
931 err = AVERROR(ENOMEM);
934 err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options);
936 av_dict_free(&options);
940 if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
942 if (c->vtt_basename) {
943 set_http_options(&options, c);
944 if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
947 av_dict_free(&options);
949 /* We only require one PAT/PMT per segment. */
950 if (oc->oformat->priv_class && oc->priv_data) {
953 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
955 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
956 av_opt_set(oc->priv_data, "sdt_period", period, 0);
957 av_opt_set(oc->priv_data, "pat_period", period, 0);
960 if (c->vtt_basename) {
961 err = avformat_write_header(vtt_oc,NULL);
968 av_dict_free(&options);
973 static const char * get_default_pattern_localtime_fmt(void)
976 time_t t = time(NULL);
978 p = localtime_r(&t, &tmbuf);
979 // no %s support when strftime returned error or left format string unchanged
980 return (!strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
983 static int hls_write_header(AVFormatContext *s)
985 HLSContext *hls = s->priv_data;
988 const char *pattern = "%d.ts";
989 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt();
990 const char *vtt_pattern = "%d.vtt";
991 AVDictionary *options = NULL;
993 int vtt_basename_size;
995 if (hls->start_sequence_source_type == HLS_START_SEQUNCE_AS_SECONDS_SINCE_EPOCH || hls->start_sequence_source_type == HLS_START_SEQUNCE_AS_FORMATTED_DATETIME) {
996 time_t t = time(NULL); // we will need it in either case
997 if (hls->start_sequence_source_type == HLS_START_SEQUNCE_AS_SECONDS_SINCE_EPOCH) {
998 hls->start_sequence = (int64_t)t;
999 } else if (hls->start_sequence_source_type == HLS_START_SEQUNCE_AS_FORMATTED_DATETIME) {
1001 struct tm *p, tmbuf;
1002 if (!(p = localtime_r(&t, &tmbuf)))
1003 return AVERROR(ENOMEM);
1004 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
1005 return AVERROR(ENOMEM);
1006 hls->start_sequence = strtoll(b, NULL, 10);
1008 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
1011 hls->sequence = hls->start_sequence;
1012 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
1013 hls->start_pts = AV_NOPTS_VALUE;
1014 hls->current_segment_final_filename_fmt[0] = '\0';
1016 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
1019 hls->initial_prog_date_time = now0;
1022 if (hls->format_options_str) {
1023 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
1025 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
1030 for (i = 0; i < s->nb_streams; i++) {
1032 s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1033 hls->has_subtitle +=
1034 s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
1037 if (hls->has_video > 1)
1038 av_log(s, AV_LOG_WARNING,
1039 "More than a single video stream present, "
1040 "expect issues decoding it.\n");
1042 hls->oformat = av_guess_format("mpegts", NULL, NULL);
1044 if (!hls->oformat) {
1045 ret = AVERROR_MUXER_NOT_FOUND;
1049 if(hls->has_subtitle) {
1050 hls->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
1051 if (!hls->oformat) {
1052 ret = AVERROR_MUXER_NOT_FOUND;
1057 if (hls->segment_filename) {
1058 hls->basename = av_strdup(hls->segment_filename);
1059 if (!hls->basename) {
1060 ret = AVERROR(ENOMEM);
1064 if (hls->flags & HLS_SINGLE_FILE)
1067 if (hls->use_localtime) {
1068 basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
1070 basename_size = strlen(s->filename) + strlen(pattern) + 1;
1072 hls->basename = av_malloc(basename_size);
1073 if (!hls->basename) {
1074 ret = AVERROR(ENOMEM);
1078 av_strlcpy(hls->basename, s->filename, basename_size);
1080 p = strrchr(hls->basename, '.');
1083 if (hls->use_localtime) {
1084 av_strlcat(hls->basename, pattern_localtime_fmt, basename_size);
1086 av_strlcat(hls->basename, pattern, basename_size);
1089 if (!hls->use_localtime) {
1090 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1091 av_log(hls, AV_LOG_ERROR,
1092 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
1093 ret = AVERROR(EINVAL);
1096 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1097 av_log(hls, AV_LOG_ERROR,
1098 "second_level_segment_size hls_flag requires use_localtime to be true\n");
1099 ret = AVERROR(EINVAL);
1102 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1103 av_log(hls, AV_LOG_ERROR,
1104 "second_level_segment_index hls_flag requires use_localtime to be true\n");
1105 ret = AVERROR(EINVAL);
1109 const char *proto = avio_find_protocol_name(hls->basename);
1110 int segment_renaming_ok = proto && !strcmp(proto, "file");
1112 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
1113 av_log(hls, AV_LOG_ERROR,
1114 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
1115 ret = AVERROR(EINVAL);
1118 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
1119 av_log(hls, AV_LOG_ERROR,
1120 "second_level_segment_size hls_flag works only with file protocol segment names\n");
1121 ret = AVERROR(EINVAL);
1125 if(hls->has_subtitle) {
1127 if (hls->flags & HLS_SINGLE_FILE)
1128 vtt_pattern = ".vtt";
1129 vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
1130 hls->vtt_basename = av_malloc(vtt_basename_size);
1131 if (!hls->vtt_basename) {
1132 ret = AVERROR(ENOMEM);
1135 hls->vtt_m3u8_name = av_malloc(vtt_basename_size);
1136 if (!hls->vtt_m3u8_name ) {
1137 ret = AVERROR(ENOMEM);
1140 av_strlcpy(hls->vtt_basename, s->filename, vtt_basename_size);
1141 p = strrchr(hls->vtt_basename, '.');
1145 if( hls->subtitle_filename ) {
1146 strcpy(hls->vtt_m3u8_name, hls->subtitle_filename);
1148 strcpy(hls->vtt_m3u8_name, hls->vtt_basename);
1149 av_strlcat(hls->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
1151 av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size);
1154 if ((ret = hls_mux_init(s)) < 0)
1157 if (hls->flags & HLS_APPEND_LIST) {
1158 parse_playlist(s, s->filename);
1159 hls->discontinuity = 1;
1160 if (hls->init_time > 0) {
1161 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
1162 " hls_init_time value will have no effect\n");
1164 hls->recording_time = hls->time * AV_TIME_BASE;
1168 if ((ret = hls_start(s)) < 0)
1171 av_dict_copy(&options, hls->format_options, 0);
1172 ret = avformat_write_header(hls->avf, &options);
1173 if (av_dict_count(options)) {
1174 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
1175 ret = AVERROR(EINVAL);
1178 //av_assert0(s->nb_streams == hls->avf->nb_streams);
1179 for (i = 0; i < s->nb_streams; i++) {
1181 AVStream *outer_st = s->streams[i];
1183 if (hls->max_seg_size > 0) {
1184 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
1185 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
1186 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
1187 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
1188 outer_st->codecpar->bit_rate, hls->max_seg_size);
1192 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
1193 inner_st = hls->avf->streams[i];
1194 else if (hls->vtt_avf)
1195 inner_st = hls->vtt_avf->streams[0];
1197 /* We have a subtitle stream, when the user does not want one */
1201 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
1205 av_dict_free(&options);
1207 av_freep(&hls->basename);
1208 av_freep(&hls->vtt_basename);
1210 avformat_free_context(hls->avf);
1212 avformat_free_context(hls->vtt_avf);
1218 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
1220 HLSContext *hls = s->priv_data;
1221 AVFormatContext *oc = NULL;
1222 AVStream *st = s->streams[pkt->stream_index];
1223 int64_t end_pts = hls->recording_time * hls->number;
1225 int ret, can_split = 1;
1226 int stream_index = 0;
1228 if (hls->sequence - hls->nb_entries > hls->start_sequence && hls->init_time > 0) {
1229 /* reset end_pts, hls->recording_time at end of the init hls list */
1230 int init_list_dur = hls->init_time * hls->nb_entries * AV_TIME_BASE;
1231 int after_init_list_dur = (hls->sequence - hls->nb_entries ) * hls->time * AV_TIME_BASE;
1232 hls->recording_time = hls->time * AV_TIME_BASE;
1233 end_pts = init_list_dur + after_init_list_dur ;
1236 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
1241 stream_index = pkt->stream_index;
1243 if (hls->start_pts == AV_NOPTS_VALUE) {
1244 hls->start_pts = pkt->pts;
1245 hls->end_pts = pkt->pts;
1248 if (hls->has_video) {
1249 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1250 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
1251 is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1253 if (pkt->pts == AV_NOPTS_VALUE)
1254 is_ref_pkt = can_split = 0;
1257 if (hls->new_start) {
1259 hls->duration = (double)(pkt->pts - hls->end_pts)
1260 * st->time_base.num / st->time_base.den;
1261 hls->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1262 av_log(s, AV_LOG_ERROR, "hls->dpp = [%lf]\n", hls->dpp);
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 av_write_frame(oc, NULL); /* Flush any buffered data */
1273 new_start_pos = avio_tell(hls->avf->pb);
1274 hls->size = new_start_pos - hls->start_pos;
1275 ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
1276 hls->start_pos = new_start_pos;
1280 hls->end_pts = pkt->pts;
1283 if (hls->flags & HLS_SINGLE_FILE) {
1284 if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1285 av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1287 } else if (hls->max_seg_size > 0) {
1288 if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1289 av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1290 if (hls->start_pos >= hls->max_seg_size) {
1292 ff_format_io_close(s, &oc->pb);
1294 ff_format_io_close(s, &hls->vtt_avf->pb);
1297 /* When split segment by byte, the duration is short than hls_time,
1298 * so it is not enough one segment duration as hls_time, */
1303 ff_format_io_close(s, &oc->pb);
1305 ff_format_io_close(s, &hls->vtt_avf->pb);
1313 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE )
1318 if ((ret = hls_window(s, 0)) < 0)
1322 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
1327 static int hls_write_trailer(struct AVFormatContext *s)
1329 HLSContext *hls = s->priv_data;
1330 AVFormatContext *oc = hls->avf;
1331 AVFormatContext *vtt_oc = hls->vtt_avf;
1333 av_write_trailer(oc);
1335 hls->size = avio_tell(hls->avf->pb) - hls->start_pos;
1336 ff_format_io_close(s, &oc->pb);
1337 /* after av_write_trailer, then duration + 1 duration per packet */
1338 hls_append_segment(s, hls, hls->duration + hls->dpp, hls->start_pos, hls->size);
1343 av_write_trailer(vtt_oc);
1344 hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos;
1345 ff_format_io_close(s, &vtt_oc->pb);
1347 av_freep(&hls->basename);
1348 avformat_free_context(oc);
1354 av_freep(&hls->vtt_basename);
1355 av_freep(&hls->vtt_m3u8_name);
1356 avformat_free_context(vtt_oc);
1359 hls_free_segments(hls->segments);
1360 hls_free_segments(hls->old_segments);
1364 #define OFFSET(x) offsetof(HLSContext, x)
1365 #define E AV_OPT_FLAG_ENCODING_PARAM
1366 static const AVOption options[] = {
1367 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
1368 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
1369 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
1370 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
1371 {"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},
1372 {"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},
1373 {"hls_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1374 {"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},
1375 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1376 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1377 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1378 {"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},
1379 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1380 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
1381 {"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"},
1382 {"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"},
1383 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
1384 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
1385 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
1386 {"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"},
1387 {"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"},
1388 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
1389 {"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"},
1390 {"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"},
1391 {"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"},
1392 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1393 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1394 {"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" },
1395 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
1396 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
1397 {"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1398 {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUNCE_AS_START_NUMBER }, 0, HLS_START_SEQUNCE_AS_FORMATTED_DATETIME, E, "start_sequence_source_type" },
1399 {"generic", "start_number value (default)", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUNCE_AS_START_NUMBER }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
1400 {"epoch", "seconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUNCE_AS_SECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
1401 {"datetime", "current datetime as YYYYMMDDhhmmss", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUNCE_AS_FORMATTED_DATETIME }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
1405 static const AVClass hls_class = {
1406 .class_name = "hls muxer",
1407 .item_name = av_default_item_name,
1409 .version = LIBAVUTIL_VERSION_INT,
1413 AVOutputFormat ff_hls_muxer = {
1415 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
1416 .extensions = "m3u8",
1417 .priv_data_size = sizeof(HLSContext),
1418 .audio_codec = AV_CODEC_ID_AAC,
1419 .video_codec = AV_CODEC_ID_H264,
1420 .subtitle_codec = AV_CODEC_ID_WEBVTT,
1421 .flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
1422 .write_header = hls_write_header,
1423 .write_packet = hls_write_packet,
1424 .write_trailer = hls_write_trailer,
1425 .priv_class = &hls_class,