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
79 HLS_TEMP_FILE = (1 << 11),
89 typedef struct HLSContext {
90 const AVClass *class; // Class for private options.
93 int64_t start_sequence;
94 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
95 AVOutputFormat *oformat;
96 AVOutputFormat *vtt_oformat;
99 AVFormatContext *vtt_avf;
101 float time; // Set by a private option.
102 float init_time; // Set by a private option.
103 int max_nb_segments; // Set by a private option.
105 int wrap; // Set by a private option.
107 uint32_t flags; // enum HLSFlags
108 uint32_t pl_type; // enum PlaylistType
109 char *segment_filename;
111 int use_localtime; ///< flag to expand filename with localtime
112 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
114 int64_t recording_time;
118 double dpp; // duration per packet
121 double duration; // last segment duration computed so far, in seconds
122 int64_t start_pos; // last segment starting position
123 int64_t size; // last segment size
124 int64_t max_seg_size; // every segment file max size
126 int discontinuity_set;
129 HLSSegment *segments;
130 HLSSegment *last_segment;
131 HLSSegment *old_segments;
137 char *format_options_str;
138 char *vtt_format_options_str;
139 char *subtitle_filename;
140 AVDictionary *format_options;
143 char key_file[LINE_BUFFER_SIZE + 1];
144 char key_uri[LINE_BUFFER_SIZE + 1];
145 char key_string[KEYSIZE*2 + 1];
146 char iv_string[KEYSIZE*2 + 1];
147 AVDictionary *vtt_format_options;
151 double initial_prog_date_time;
152 char current_segment_final_filename_fmt[1024]; // when renaming segments
155 static int get_int_from_double(double val)
157 return (int)((val - (int)val) >= 0.001) ? (int)(val + 1) : (int)val;
160 static int mkdir_p(const char *path) {
162 char *temp = av_strdup(path);
166 if (!path || !temp) {
170 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
172 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
176 for ( ; *pos != '\0'; ++pos) {
177 if (*pos == '/' || *pos == '\\') {
180 ret = mkdir(temp, 0755);
185 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
186 ret = mkdir(temp, 0755);
193 static int replace_int_data_in_filename(char *buf, int buf_size, const char *filename, char placeholder, int64_t number)
196 char *q, buf1[20], c;
197 int nd, len, addchar_count;
206 if (c == '%' && *(p+1) == '%') // %%
208 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
211 while (av_isdigit(*(p + addchar_count))) {
212 nd = nd * 10 + *(p + addchar_count) - '0';
216 if (*(p + addchar_count) == placeholder) {
217 len = snprintf(buf1, sizeof(buf1), "%0*"PRId64, (number < 0) ? nd : nd++, number);
218 if (len < 1) // returned error or empty buf1
220 if ((q - buf + len) > buf_size - 1)
222 memcpy(q, buf1, len);
224 p += (addchar_count + 1);
232 while (addchar_count--)
233 if ((q - buf) < buf_size - 1)
245 static int hls_delete_old_segments(HLSContext *hls) {
247 HLSSegment *segment, *previous_segment = NULL;
248 float playlist_duration = 0.0f;
249 int ret = 0, path_size, sub_path_size;
250 char *dirname = NULL, *p, *sub_path;
252 AVDictionary *options = NULL;
253 AVIOContext *out = NULL;
255 segment = hls->segments;
257 playlist_duration += segment->duration;
258 segment = segment->next;
261 segment = hls->old_segments;
263 playlist_duration -= segment->duration;
264 previous_segment = segment;
265 segment = previous_segment->next;
266 if (playlist_duration <= -previous_segment->duration) {
267 previous_segment->next = NULL;
272 if (segment && !hls->use_localtime_mkdir) {
273 if (hls->segment_filename) {
274 dirname = av_strdup(hls->segment_filename);
276 dirname = av_strdup(hls->avf->filename);
279 ret = AVERROR(ENOMEM);
282 p = (char *)av_basename(dirname);
287 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
289 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
290 path = av_malloc(path_size);
292 ret = AVERROR(ENOMEM);
296 if (hls->use_localtime_mkdir)
297 av_strlcpy(path, segment->filename, path_size);
298 else { // segment->filename contains basename only
299 av_strlcpy(path, dirname, path_size);
300 av_strlcat(path, segment->filename, path_size);
304 av_dict_set(&options, "method", "DELETE", 0);
305 if ((ret = hls->avf->io_open(hls->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
307 ff_format_io_close(hls->avf, &out);
308 } else if (unlink(path) < 0) {
309 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
310 path, strerror(errno));
313 if ((segment->sub_filename[0] != '\0')) {
314 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
315 sub_path = av_malloc(sub_path_size);
317 ret = AVERROR(ENOMEM);
321 av_strlcpy(sub_path, dirname, sub_path_size);
322 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
325 av_dict_set(&options, "method", "DELETE", 0);
326 if ((ret = hls->avf->io_open(hls->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
330 ff_format_io_close(hls->avf, &out);
331 } else if (unlink(sub_path) < 0) {
332 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
333 sub_path, strerror(errno));
338 previous_segment = segment;
339 segment = previous_segment->next;
340 av_free(previous_segment);
350 static int hls_encryption_start(AVFormatContext *s)
352 HLSContext *hls = s->priv_data;
355 uint8_t key[KEYSIZE];
357 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
358 av_log(hls, AV_LOG_ERROR,
359 "error opening key info file %s\n", hls->key_info_file);
363 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
364 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
366 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
367 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
369 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
370 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
372 ff_format_io_close(s, &pb);
374 if (!*hls->key_uri) {
375 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
376 return AVERROR(EINVAL);
379 if (!*hls->key_file) {
380 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
381 return AVERROR(EINVAL);
384 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
385 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
389 ret = avio_read(pb, key, sizeof(key));
390 ff_format_io_close(s, &pb);
391 if (ret != sizeof(key)) {
392 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
393 if (ret >= 0 || ret == AVERROR_EOF)
394 ret = AVERROR(EINVAL);
397 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
402 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
404 int len = ff_get_line(s, buf, maxlen);
405 while (len > 0 && av_isspace(buf[len - 1]))
410 static int hls_mux_init(AVFormatContext *s)
412 HLSContext *hls = s->priv_data;
414 AVFormatContext *vtt_oc = NULL;
417 ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
422 oc->filename[0] = '\0';
423 oc->oformat = hls->oformat;
424 oc->interrupt_callback = s->interrupt_callback;
425 oc->max_delay = s->max_delay;
426 oc->opaque = s->opaque;
427 oc->io_open = s->io_open;
428 oc->io_close = s->io_close;
429 av_dict_copy(&oc->metadata, s->metadata, 0);
431 if(hls->vtt_oformat) {
432 ret = avformat_alloc_output_context2(&hls->vtt_avf, hls->vtt_oformat, NULL, NULL);
435 vtt_oc = hls->vtt_avf;
436 vtt_oc->oformat = hls->vtt_oformat;
437 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
440 for (i = 0; i < s->nb_streams; i++) {
442 AVFormatContext *loc;
443 if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
448 if (!(st = avformat_new_stream(loc, NULL)))
449 return AVERROR(ENOMEM);
450 avcodec_parameters_copy(st->codecpar, s->streams[i]->codecpar);
451 st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio;
452 st->time_base = s->streams[i]->time_base;
460 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
463 if (!av_strcasecmp(segment->filename,filename))
465 segment = segment->next;
467 return (HLSSegment *) NULL;
470 /* Create a new segment and append it to the segment list */
471 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration,
472 int64_t pos, int64_t size)
474 HLSSegment *en = av_malloc(sizeof(*en));
475 const char *filename;
479 return AVERROR(ENOMEM);
481 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
482 strlen(hls->current_segment_final_filename_fmt)) {
483 av_strlcpy(hls->avf->filename, hls->current_segment_final_filename_fmt, sizeof(hls->avf->filename));
484 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
485 char * filename = av_strdup(hls->avf->filename); // %%s will be %s after strftime
488 return AVERROR(ENOMEM);
490 if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename),
491 filename, 's', pos + size) < 1) {
492 av_log(hls, AV_LOG_ERROR,
493 "Invalid second level segment filename template '%s', "
494 "you can try to remove second_level_segment_size flag\n",
498 return AVERROR(EINVAL);
502 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
503 char * filename = av_strdup(hls->avf->filename); // %%t will be %t after strftime
506 return AVERROR(ENOMEM);
508 if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename),
509 filename, 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
510 av_log(hls, AV_LOG_ERROR,
511 "Invalid second level segment filename template '%s', "
512 "you can try to remove second_level_segment_time flag\n",
516 return AVERROR(EINVAL);
523 filename = av_basename(hls->avf->filename);
525 if (hls->use_localtime_mkdir) {
526 filename = hls->avf->filename;
528 if (find_segment_by_filename(hls->segments, filename)
529 || find_segment_by_filename(hls->old_segments, filename)) {
530 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
532 av_strlcpy(en->filename, filename, sizeof(en->filename));
534 if(hls->has_subtitle)
535 av_strlcpy(en->sub_filename, av_basename(hls->vtt_avf->filename), sizeof(en->sub_filename));
537 en->sub_filename[0] = '\0';
539 en->duration = duration;
545 if (hls->discontinuity) {
547 hls->discontinuity = 0;
550 if (hls->key_info_file) {
551 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
552 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
558 hls->last_segment->next = en;
560 hls->last_segment = en;
562 // EVENT or VOD playlists imply sliding window cannot be used
563 if (hls->pl_type != PLAYLIST_TYPE_NONE)
564 hls->max_nb_segments = 0;
566 if (hls->max_nb_segments && hls->nb_entries >= hls->max_nb_segments) {
568 hls->initial_prog_date_time += en->duration;
569 hls->segments = en->next;
570 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
572 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
574 !(hls->flags & HLS_SINGLE_FILE)) {
576 en->next = hls->old_segments;
577 hls->old_segments = en;
578 if ((ret = hls_delete_old_segments(hls)) < 0)
585 if (hls->max_seg_size > 0) {
593 static int parse_playlist(AVFormatContext *s, const char *url)
595 HLSContext *hls = s->priv_data;
597 int ret = 0, is_segment = 0;
598 int64_t new_start_pos;
602 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
603 &s->interrupt_callback, NULL,
604 s->protocol_whitelist, s->protocol_blacklist)) < 0)
607 read_chomp_line(in, line, sizeof(line));
608 if (strcmp(line, "#EXTM3U")) {
609 ret = AVERROR_INVALIDDATA;
613 hls->discontinuity = 0;
614 while (!avio_feof(in)) {
615 read_chomp_line(in, line, sizeof(line));
616 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
617 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
618 if (tmp_sequence < hls->sequence)
619 av_log(hls, AV_LOG_VERBOSE,
620 "Found playlist sequence number was smaller """
621 "than specified start sequence number: %"PRId64" < %"PRId64", "
622 "omitting\n", tmp_sequence, hls->start_sequence);
624 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
625 hls->sequence = tmp_sequence;
627 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
629 hls->discontinuity = 1;
630 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
632 hls->duration = atof(ptr);
633 } else if (av_strstart(line, "#", NULL)) {
635 } else if (line[0]) {
638 new_start_pos = avio_tell(hls->avf->pb);
639 hls->size = new_start_pos - hls->start_pos;
640 av_strlcpy(hls->avf->filename, line, sizeof(line));
641 ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
644 hls->start_pos = new_start_pos;
654 static void hls_free_segments(HLSSegment *p)
665 static void set_http_options(AVDictionary **options, HLSContext *c)
668 av_dict_set(options, "method", c->method, 0);
671 static void write_m3u8_head_block(HLSContext *hls, AVIOContext *out, int version,
672 int target_duration, int64_t sequence)
674 avio_printf(out, "#EXTM3U\n");
675 avio_printf(out, "#EXT-X-VERSION:%d\n", version);
676 if (hls->allowcache == 0 || hls->allowcache == 1) {
677 avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
679 avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
680 avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
681 av_log(hls, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
684 static int hls_window(AVFormatContext *s, int last)
686 HLSContext *hls = s->priv_data;
688 int target_duration = 0;
690 AVIOContext *out = NULL;
691 AVIOContext *sub_out = NULL;
692 char temp_filename[1024];
693 int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
695 const char *proto = avio_find_protocol_name(s->filename);
696 int use_rename = proto && !strcmp(proto, "file");
697 static unsigned warned_non_file;
698 char *key_uri = NULL;
699 char *iv_string = NULL;
700 AVDictionary *options = NULL;
701 double prog_date_time = hls->initial_prog_date_time;
702 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
704 if (byterange_mode) {
709 if (!use_rename && !warned_non_file++)
710 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
712 set_http_options(&options, hls);
713 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
714 if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
717 for (en = hls->segments; en; en = en->next) {
718 if (target_duration <= en->duration)
719 target_duration = get_int_from_double(en->duration);
722 hls->discontinuity_set = 0;
723 write_m3u8_head_block(hls, out, version, target_duration, sequence);
724 if (hls->pl_type == PLAYLIST_TYPE_EVENT) {
725 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n");
726 } else if (hls->pl_type == PLAYLIST_TYPE_VOD) {
727 avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n");
730 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){
731 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
732 hls->discontinuity_set = 1;
734 for (en = hls->segments; en; en = en->next) {
735 if (hls->key_info_file && (!key_uri || strcmp(en->key_uri, key_uri) ||
736 av_strcasecmp(en->iv_string, iv_string))) {
737 avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
739 avio_printf(out, ",IV=0x%s", en->iv_string);
740 avio_printf(out, "\n");
741 key_uri = en->key_uri;
742 iv_string = en->iv_string;
746 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
749 if (hls->flags & HLS_ROUND_DURATIONS)
750 avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
752 avio_printf(out, "#EXTINF:%f,\n", en->duration);
754 avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
756 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
757 time_t tt, wrongsecs;
759 struct tm *tm, tmpbuf;
760 char buf0[128], buf1[128];
761 tt = (int64_t)prog_date_time;
762 milli = av_clip(lrint(1000*(prog_date_time - tt)), 0, 999);
763 tm = localtime_r(&tt, &tmpbuf);
764 strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm);
765 if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') {
766 int tz_min, dst = tm->tm_isdst;
767 tm = gmtime_r(&tt, &tmpbuf);
769 wrongsecs = mktime(tm);
770 tz_min = (abs(wrongsecs - tt) + 30) / 60;
771 snprintf(buf1, sizeof(buf1),
773 wrongsecs <= tt ? '+' : '-',
777 avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1);
778 prog_date_time += en->duration;
781 avio_printf(out, "%s", hls->baseurl);
782 avio_printf(out, "%s\n", en->filename);
785 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
786 avio_printf(out, "#EXT-X-ENDLIST\n");
788 if( hls->vtt_m3u8_name ) {
789 if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
791 write_m3u8_head_block(hls, sub_out, version, target_duration, sequence);
793 for (en = hls->segments; en; en = en->next) {
794 avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
796 avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
799 avio_printf(sub_out, "%s", hls->baseurl);
800 avio_printf(sub_out, "%s\n", en->sub_filename);
804 avio_printf(sub_out, "#EXT-X-ENDLIST\n");
809 av_dict_free(&options);
810 ff_format_io_close(s, &out);
811 ff_format_io_close(s, &sub_out);
812 if (ret >= 0 && use_rename)
813 ff_rename(temp_filename, s->filename, s);
817 static int hls_start(AVFormatContext *s)
819 HLSContext *c = s->priv_data;
820 AVFormatContext *oc = c->avf;
821 AVFormatContext *vtt_oc = c->vtt_avf;
822 AVDictionary *options = NULL;
823 char *filename, iv_string[KEYSIZE*2 + 1];
826 if ((c->flags & HLS_TEMP_FILE) && oc->filename[0] != 0) {
827 size_t len = strlen(oc->filename);
828 char final_filename[sizeof(oc->filename)];
829 av_strlcpy(final_filename, oc->filename, len);
830 final_filename[len-4] = '\0';
831 ff_rename(oc->filename, final_filename, s);
832 oc->filename[len-4] = '\0';
835 if (c->flags & HLS_SINGLE_FILE) {
836 av_strlcpy(oc->filename, c->basename,
837 sizeof(oc->filename));
839 av_strlcpy(vtt_oc->filename, c->vtt_basename,
840 sizeof(vtt_oc->filename));
841 } else if (c->max_seg_size > 0) {
842 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
844 c->basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
846 c->basename, 'd', c->sequence) < 1) {
848 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", c->basename);
849 return AVERROR(EINVAL);
852 if (c->use_localtime) {
854 struct tm *tm, tmpbuf;
856 tm = localtime_r(&now0, &tmpbuf);
857 if (!strftime(oc->filename, sizeof(oc->filename), c->basename, tm)) {
858 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
859 return AVERROR(EINVAL);
861 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
862 char * filename = av_strdup(oc->filename); // %%d will be %d after strftime
864 return AVERROR(ENOMEM);
865 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
867 filename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
869 filename, 'd', c->sequence) < 1) {
871 av_log(c, AV_LOG_ERROR,
872 "Invalid second level segment filename template '%s', "
873 "you can try to remove second_level_segment_index flag\n",
876 return AVERROR(EINVAL);
880 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
881 av_strlcpy(c->current_segment_final_filename_fmt, oc->filename,
882 sizeof(c->current_segment_final_filename_fmt));
883 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
884 char * filename = av_strdup(oc->filename); // %%s will be %s after strftime
886 return AVERROR(ENOMEM);
887 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 's', 0) < 1) {
888 av_log(c, AV_LOG_ERROR,
889 "Invalid second level segment filename template '%s', "
890 "you can try to remove second_level_segment_size flag\n",
893 return AVERROR(EINVAL);
897 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
898 char * filename = av_strdup(oc->filename); // %%t will be %t after strftime
900 return AVERROR(ENOMEM);
901 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 't', 0) < 1) {
902 av_log(c, AV_LOG_ERROR,
903 "Invalid second level segment filename template '%s', "
904 "you can try to remove second_level_segment_time flag\n",
907 return AVERROR(EINVAL);
912 if (c->use_localtime_mkdir) {
914 char *fn_copy = av_strdup(oc->filename);
916 return AVERROR(ENOMEM);
918 dir = av_dirname(fn_copy);
919 if (mkdir_p(dir) == -1 && errno != EEXIST) {
920 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
922 return AVERROR(errno);
926 } else if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
928 c->basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
930 c->basename, 'd', c->sequence) < 1) {
932 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", c->basename);
933 return AVERROR(EINVAL);
935 if( c->vtt_basename) {
936 if (replace_int_data_in_filename(vtt_oc->filename, sizeof(vtt_oc->filename),
938 c->vtt_basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) {
940 c->vtt_basename, 'd', c->sequence) < 1) {
942 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename);
943 return AVERROR(EINVAL);
949 set_http_options(&options, c);
951 if (c->flags & HLS_TEMP_FILE) {
952 av_strlcat(oc->filename, ".tmp", sizeof(oc->filename));
955 if (c->key_info_file) {
956 if ((err = hls_encryption_start(s)) < 0)
958 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
961 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
963 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, c->sequence);
964 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
967 filename = av_asprintf("crypto:%s", oc->filename);
969 err = AVERROR(ENOMEM);
972 err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options);
974 av_dict_free(&options);
978 if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
980 if (c->vtt_basename) {
981 set_http_options(&options, c);
982 if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0)
985 av_dict_free(&options);
987 /* We only require one PAT/PMT per segment. */
988 if (oc->oformat->priv_class && oc->priv_data) {
991 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
993 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
994 av_opt_set(oc->priv_data, "sdt_period", period, 0);
995 av_opt_set(oc->priv_data, "pat_period", period, 0);
998 if (c->vtt_basename) {
999 err = avformat_write_header(vtt_oc,NULL);
1006 av_dict_free(&options);
1011 static const char * get_default_pattern_localtime_fmt(void)
1014 time_t t = time(NULL);
1015 struct tm *p, tmbuf;
1016 p = localtime_r(&t, &tmbuf);
1017 // no %s support when strftime returned error or left format string unchanged
1018 return (!strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1021 static int hls_write_header(AVFormatContext *s)
1023 HLSContext *hls = s->priv_data;
1026 const char *pattern = "%d.ts";
1027 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt();
1028 const char *vtt_pattern = "%d.vtt";
1029 AVDictionary *options = NULL;
1031 int vtt_basename_size;
1033 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH || hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
1034 time_t t = time(NULL); // we will need it in either case
1035 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
1036 hls->start_sequence = (int64_t)t;
1037 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
1039 struct tm *p, tmbuf;
1040 if (!(p = localtime_r(&t, &tmbuf)))
1041 return AVERROR(ENOMEM);
1042 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
1043 return AVERROR(ENOMEM);
1044 hls->start_sequence = strtoll(b, NULL, 10);
1046 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
1049 hls->sequence = hls->start_sequence;
1050 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
1051 hls->start_pts = AV_NOPTS_VALUE;
1052 hls->current_segment_final_filename_fmt[0] = '\0';
1054 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
1057 hls->initial_prog_date_time = now0;
1060 if (hls->format_options_str) {
1061 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
1063 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
1068 for (i = 0; i < s->nb_streams; i++) {
1070 s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1071 hls->has_subtitle +=
1072 s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
1075 if (hls->has_video > 1)
1076 av_log(s, AV_LOG_WARNING,
1077 "More than a single video stream present, "
1078 "expect issues decoding it.\n");
1080 hls->oformat = av_guess_format("mpegts", NULL, NULL);
1082 if (!hls->oformat) {
1083 ret = AVERROR_MUXER_NOT_FOUND;
1087 if(hls->has_subtitle) {
1088 hls->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
1089 if (!hls->oformat) {
1090 ret = AVERROR_MUXER_NOT_FOUND;
1095 if (hls->segment_filename) {
1096 hls->basename = av_strdup(hls->segment_filename);
1097 if (!hls->basename) {
1098 ret = AVERROR(ENOMEM);
1102 if (hls->flags & HLS_SINGLE_FILE)
1105 if (hls->use_localtime) {
1106 basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
1108 basename_size = strlen(s->filename) + strlen(pattern) + 1;
1110 hls->basename = av_malloc(basename_size);
1111 if (!hls->basename) {
1112 ret = AVERROR(ENOMEM);
1116 av_strlcpy(hls->basename, s->filename, basename_size);
1118 p = strrchr(hls->basename, '.');
1121 if (hls->use_localtime) {
1122 av_strlcat(hls->basename, pattern_localtime_fmt, basename_size);
1124 av_strlcat(hls->basename, pattern, basename_size);
1127 if (!hls->use_localtime) {
1128 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1129 av_log(hls, AV_LOG_ERROR,
1130 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
1131 ret = AVERROR(EINVAL);
1134 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1135 av_log(hls, AV_LOG_ERROR,
1136 "second_level_segment_size hls_flag requires use_localtime to be true\n");
1137 ret = AVERROR(EINVAL);
1140 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1141 av_log(hls, AV_LOG_ERROR,
1142 "second_level_segment_index hls_flag requires use_localtime to be true\n");
1143 ret = AVERROR(EINVAL);
1147 const char *proto = avio_find_protocol_name(hls->basename);
1148 int segment_renaming_ok = proto && !strcmp(proto, "file");
1150 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
1151 av_log(hls, AV_LOG_ERROR,
1152 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
1153 ret = AVERROR(EINVAL);
1156 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
1157 av_log(hls, AV_LOG_ERROR,
1158 "second_level_segment_size hls_flag works only with file protocol segment names\n");
1159 ret = AVERROR(EINVAL);
1163 if(hls->has_subtitle) {
1165 if (hls->flags & HLS_SINGLE_FILE)
1166 vtt_pattern = ".vtt";
1167 vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
1168 hls->vtt_basename = av_malloc(vtt_basename_size);
1169 if (!hls->vtt_basename) {
1170 ret = AVERROR(ENOMEM);
1173 hls->vtt_m3u8_name = av_malloc(vtt_basename_size);
1174 if (!hls->vtt_m3u8_name ) {
1175 ret = AVERROR(ENOMEM);
1178 av_strlcpy(hls->vtt_basename, s->filename, vtt_basename_size);
1179 p = strrchr(hls->vtt_basename, '.');
1183 if( hls->subtitle_filename ) {
1184 strcpy(hls->vtt_m3u8_name, hls->subtitle_filename);
1186 strcpy(hls->vtt_m3u8_name, hls->vtt_basename);
1187 av_strlcat(hls->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
1189 av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size);
1192 if ((ret = hls_mux_init(s)) < 0)
1195 if (hls->flags & HLS_APPEND_LIST) {
1196 parse_playlist(s, s->filename);
1197 hls->discontinuity = 1;
1198 if (hls->init_time > 0) {
1199 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
1200 " hls_init_time value will have no effect\n");
1202 hls->recording_time = hls->time * AV_TIME_BASE;
1206 if ((ret = hls_start(s)) < 0)
1209 av_dict_copy(&options, hls->format_options, 0);
1210 ret = avformat_write_header(hls->avf, &options);
1211 if (av_dict_count(options)) {
1212 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
1213 ret = AVERROR(EINVAL);
1216 //av_assert0(s->nb_streams == hls->avf->nb_streams);
1217 for (i = 0; i < s->nb_streams; i++) {
1219 AVStream *outer_st = s->streams[i];
1221 if (hls->max_seg_size > 0) {
1222 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
1223 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
1224 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
1225 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
1226 outer_st->codecpar->bit_rate, hls->max_seg_size);
1230 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
1231 inner_st = hls->avf->streams[i];
1232 else if (hls->vtt_avf)
1233 inner_st = hls->vtt_avf->streams[0];
1235 /* We have a subtitle stream, when the user does not want one */
1239 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
1243 av_dict_free(&options);
1245 av_freep(&hls->basename);
1246 av_freep(&hls->vtt_basename);
1248 avformat_free_context(hls->avf);
1250 avformat_free_context(hls->vtt_avf);
1256 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
1258 HLSContext *hls = s->priv_data;
1259 AVFormatContext *oc = NULL;
1260 AVStream *st = s->streams[pkt->stream_index];
1261 int64_t end_pts = hls->recording_time * hls->number;
1263 int ret, can_split = 1;
1264 int stream_index = 0;
1266 if (hls->sequence - hls->nb_entries > hls->start_sequence && hls->init_time > 0) {
1267 /* reset end_pts, hls->recording_time at end of the init hls list */
1268 int init_list_dur = hls->init_time * hls->nb_entries * AV_TIME_BASE;
1269 int after_init_list_dur = (hls->sequence - hls->nb_entries ) * hls->time * AV_TIME_BASE;
1270 hls->recording_time = hls->time * AV_TIME_BASE;
1271 end_pts = init_list_dur + after_init_list_dur ;
1274 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
1279 stream_index = pkt->stream_index;
1281 if (hls->start_pts == AV_NOPTS_VALUE) {
1282 hls->start_pts = pkt->pts;
1283 hls->end_pts = pkt->pts;
1286 if (hls->has_video) {
1287 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1288 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
1289 is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1291 if (pkt->pts == AV_NOPTS_VALUE)
1292 is_ref_pkt = can_split = 0;
1295 if (hls->new_start) {
1297 hls->duration = (double)(pkt->pts - hls->end_pts)
1298 * st->time_base.num / st->time_base.den;
1299 hls->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1301 hls->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
1305 if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base,
1306 end_pts, AV_TIME_BASE_Q) >= 0) {
1307 int64_t new_start_pos;
1308 char *old_filename = av_strdup(hls->avf->filename);
1310 if (!old_filename) {
1311 return AVERROR(ENOMEM);
1314 av_write_frame(oc, NULL); /* Flush any buffered data */
1316 new_start_pos = avio_tell(hls->avf->pb);
1317 hls->size = new_start_pos - hls->start_pos;
1318 ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
1319 hls->start_pos = new_start_pos;
1321 av_free(old_filename);
1325 hls->end_pts = pkt->pts;
1328 if (hls->flags & HLS_SINGLE_FILE) {
1329 if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1330 av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1332 } else if (hls->max_seg_size > 0) {
1333 if (hls->avf->oformat->priv_class && hls->avf->priv_data)
1334 av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
1335 if (hls->start_pos >= hls->max_seg_size) {
1337 ff_format_io_close(s, &oc->pb);
1338 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
1339 strlen(hls->current_segment_final_filename_fmt)) {
1340 ff_rename(old_filename, hls->avf->filename, hls);
1343 ff_format_io_close(s, &hls->vtt_avf->pb);
1346 /* When split segment by byte, the duration is short than hls_time,
1347 * so it is not enough one segment duration as hls_time, */
1352 ff_format_io_close(s, &oc->pb);
1353 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
1354 strlen(hls->current_segment_final_filename_fmt)) {
1355 ff_rename(old_filename, hls->avf->filename, hls);
1358 ff_format_io_close(s, &hls->vtt_avf->pb);
1364 av_free(old_filename);
1368 if ((ret = hls_window(s, 0)) < 0) {
1369 av_free(old_filename);
1374 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
1379 static int hls_write_trailer(struct AVFormatContext *s)
1381 HLSContext *hls = s->priv_data;
1382 AVFormatContext *oc = hls->avf;
1383 AVFormatContext *vtt_oc = hls->vtt_avf;
1384 char *old_filename = av_strdup(hls->avf->filename);
1386 if (!old_filename) {
1387 return AVERROR(ENOMEM);
1391 av_write_trailer(oc);
1393 hls->size = avio_tell(hls->avf->pb) - hls->start_pos;
1394 ff_format_io_close(s, &oc->pb);
1395 /* after av_write_trailer, then duration + 1 duration per packet */
1396 hls_append_segment(s, hls, hls->duration + hls->dpp, hls->start_pos, hls->size);
1399 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
1400 strlen(hls->current_segment_final_filename_fmt)) {
1401 ff_rename(old_filename, hls->avf->filename, hls);
1404 if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0] != 0) {
1405 size_t len = strlen(oc->filename);
1406 char final_filename[sizeof(oc->filename)];
1407 av_strlcpy(final_filename, oc->filename, len);
1408 final_filename[len-4] = '\0';
1409 ff_rename(oc->filename, final_filename, s);
1410 oc->filename[len-4] = '\0';
1415 av_write_trailer(vtt_oc);
1416 hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos;
1417 ff_format_io_close(s, &vtt_oc->pb);
1419 av_freep(&hls->basename);
1420 avformat_free_context(oc);
1426 av_freep(&hls->vtt_basename);
1427 av_freep(&hls->vtt_m3u8_name);
1428 avformat_free_context(vtt_oc);
1431 hls_free_segments(hls->segments);
1432 hls_free_segments(hls->old_segments);
1433 av_free(old_filename);
1437 #define OFFSET(x) offsetof(HLSContext, x)
1438 #define E AV_OPT_FLAG_ENCODING_PARAM
1439 static const AVOption options[] = {
1440 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
1441 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
1442 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
1443 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
1444 {"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},
1445 {"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},
1447 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1449 {"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},
1450 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1451 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1452 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
1453 {"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},
1454 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1455 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
1456 {"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"},
1457 {"temp_file", "write segment to temporary file and rename when complete", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_TEMP_FILE }, 0, UINT_MAX, E, "flags"},
1458 {"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"},
1459 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
1460 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
1461 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
1462 {"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"},
1463 {"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"},
1464 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
1465 {"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"},
1466 {"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"},
1467 {"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"},
1468 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1469 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
1470 {"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" },
1471 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
1472 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
1473 {"method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
1474 {"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" },
1475 {"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" },
1476 {"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" },
1477 {"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" },
1481 static const AVClass hls_class = {
1482 .class_name = "hls muxer",
1483 .item_name = av_default_item_name,
1485 .version = LIBAVUTIL_VERSION_INT,
1489 AVOutputFormat ff_hls_muxer = {
1491 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
1492 .extensions = "m3u8",
1493 .priv_data_size = sizeof(HLSContext),
1494 .audio_codec = AV_CODEC_ID_AAC,
1495 .video_codec = AV_CODEC_ID_H264,
1496 .subtitle_codec = AV_CODEC_ID_WEBVTT,
1497 .flags = AVFMT_NOFILE | AVFMT_ALLOW_FLUSH,
1498 .write_header = hls_write_header,
1499 .write_packet = hls_write_packet,
1500 .write_trailer = hls_write_trailer,
1501 .priv_class = &hls_class,