2 * Apple HTTP Live Streaming segmenter
3 * Copyright (c) 2012, Luca Barbato
4 * Copyright (c) 2017 Akamai Technologies, Inc.
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
33 #include <openssl/rand.h>
36 #include "libavutil/avassert.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/avstring.h"
40 #include "libavutil/intreadwrite.h"
41 #include "libavutil/random_seed.h"
42 #include "libavutil/opt.h"
43 #include "libavutil/log.h"
44 #include "libavutil/time_internal.h"
47 #include "avio_internal.h"
49 #include "hlsplaylist.h"
51 #include "os_support.h"
54 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
55 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
56 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
57 } StartSequenceSourceType;
60 #define LINE_BUFFER_SIZE 1024
61 #define HLS_MICROSECOND_UNIT 1000000
62 #define POSTFIX_PATTERN "_%d"
64 typedef struct HLSSegment {
66 char sub_filename[1024];
67 double duration; /* in seconds */
72 char key_uri[LINE_BUFFER_SIZE + 1];
73 char iv_string[KEYSIZE*2 + 1];
75 struct HLSSegment *next;
78 typedef enum HLSFlags {
79 // Generate a single media file and use byte ranges in the playlist.
80 HLS_SINGLE_FILE = (1 << 0),
81 HLS_DELETE_SEGMENTS = (1 << 1),
82 HLS_ROUND_DURATIONS = (1 << 2),
83 HLS_DISCONT_START = (1 << 3),
84 HLS_OMIT_ENDLIST = (1 << 4),
85 HLS_SPLIT_BY_TIME = (1 << 5),
86 HLS_APPEND_LIST = (1 << 6),
87 HLS_PROGRAM_DATE_TIME = (1 << 7),
88 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
89 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
90 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
91 HLS_TEMP_FILE = (1 << 11),
92 HLS_PERIODIC_REKEY = (1 << 12),
93 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
101 typedef struct VariantStream {
104 AVOutputFormat *oformat;
105 AVOutputFormat *vtt_oformat;
108 int init_range_length;
110 AVFormatContext *avf;
111 AVFormatContext *vtt_avf;
116 double dpp; // duration per packet
119 double duration; // last segment duration computed so far, in seconds
120 int64_t start_pos; // last segment starting position
121 int64_t size; // last segment size
123 int discontinuity_set;
126 HLSSegment *segments;
127 HLSSegment *last_segment;
128 HLSSegment *old_segments;
135 double initial_prog_date_time;
136 char current_segment_final_filename_fmt[1024]; // when renaming segments
138 char *fmp4_init_filename;
139 char *base_output_dirname;
143 unsigned int nb_streams;
144 int m3u8_created; /* status of media play-list creation */
148 typedef struct HLSContext {
149 const AVClass *class; // Class for private options.
150 int64_t start_sequence;
151 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
153 float time; // Set by a private option.
154 float init_time; // Set by a private option.
155 int max_nb_segments; // Set by a private option.
157 int wrap; // Set by a private option.
159 uint32_t flags; // enum HLSFlags
160 uint32_t pl_type; // enum PlaylistType
161 char *segment_filename;
162 char *fmp4_init_filename;
165 int use_localtime; ///< flag to expand filename with localtime
166 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
168 int64_t recording_time;
169 int64_t max_seg_size; // every segment file max size
172 char *format_options_str;
173 char *vtt_format_options_str;
174 char *subtitle_filename;
175 AVDictionary *format_options;
185 char key_file[LINE_BUFFER_SIZE + 1];
186 char key_uri[LINE_BUFFER_SIZE + 1];
187 char key_string[KEYSIZE*2 + 1];
188 char iv_string[KEYSIZE*2 + 1];
189 AVDictionary *vtt_format_options;
194 VariantStream *var_streams;
195 unsigned int nb_varstreams;
197 int master_m3u8_created; /* status of master play-list creation */
198 char *master_m3u8_url; /* URL of the master m3u8 file */
199 int version; /* HLS version */
200 char *var_stream_map; /* user specified variant stream map string */
201 char *master_pl_name;
202 unsigned int master_publish_rate;
206 static int mkdir_p(const char *path) {
208 char *temp = av_strdup(path);
212 if (!path || !temp) {
216 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
218 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
222 for ( ; *pos != '\0'; ++pos) {
223 if (*pos == '/' || *pos == '\\') {
226 ret = mkdir(temp, 0755);
231 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
232 ret = mkdir(temp, 0755);
239 static int is_http_proto(char *filename) {
240 const char *proto = avio_find_protocol_name(filename);
241 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
244 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
245 AVDictionary **options) {
246 HLSContext *hls = s->priv_data;
247 int http_base_proto = is_http_proto(filename);
249 if (!*pb || !http_base_proto || !hls->http_persistent) {
250 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
252 URLContext *http_url_context = ffio_geturlcontext(*pb);
253 av_assert0(http_url_context);
254 err = ff_http_do_new_request(http_url_context, filename);
259 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
260 HLSContext *hls = s->priv_data;
261 int http_base_proto = is_http_proto(filename);
263 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
264 ff_format_io_close(s, pb);
268 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
270 int http_base_proto = is_http_proto(s->filename);
273 av_dict_set(options, "method", c->method, 0);
274 } else if (http_base_proto) {
275 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
276 av_dict_set(options, "method", "PUT", 0);
279 av_dict_set(options, "user_agent", c->user_agent, 0);
280 if (c->http_persistent)
281 av_dict_set_int(options, "multiple_requests", 1, 0);
285 static int replace_int_data_in_filename(char *buf, int buf_size, const char *filename, char placeholder, int64_t number)
288 char *q, buf1[20], c;
289 int nd, len, addchar_count;
298 if (c == '%' && *(p+1) == '%') // %%
300 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
303 while (av_isdigit(*(p + addchar_count))) {
304 nd = nd * 10 + *(p + addchar_count) - '0';
308 if (*(p + addchar_count) == placeholder) {
309 len = snprintf(buf1, sizeof(buf1), "%0*"PRId64, (number < 0) ? nd : nd++, number);
310 if (len < 1) // returned error or empty buf1
312 if ((q - buf + len) > buf_size - 1)
314 memcpy(q, buf1, len);
316 p += (addchar_count + 1);
324 while (addchar_count--)
325 if ((q - buf) < buf_size - 1)
337 static void write_styp(AVIOContext *pb)
340 ffio_wfourcc(pb, "styp");
341 ffio_wfourcc(pb, "msdh");
342 avio_wb32(pb, 0); /* minor */
343 ffio_wfourcc(pb, "msdh");
344 ffio_wfourcc(pb, "msix");
347 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
350 HLSSegment *segment, *previous_segment = NULL;
351 float playlist_duration = 0.0f;
352 int ret = 0, path_size, sub_path_size;
353 char *dirname = NULL, *p, *sub_path;
355 AVDictionary *options = NULL;
356 AVIOContext *out = NULL;
357 const char *proto = NULL;
359 segment = vs->segments;
361 playlist_duration += segment->duration;
362 segment = segment->next;
365 segment = vs->old_segments;
367 playlist_duration -= segment->duration;
368 previous_segment = segment;
369 segment = previous_segment->next;
370 if (playlist_duration <= -previous_segment->duration) {
371 previous_segment->next = NULL;
376 if (segment && !hls->use_localtime_mkdir) {
377 if (hls->segment_filename) {
378 dirname = av_strdup(hls->segment_filename);
380 dirname = av_strdup(vs->avf->filename);
383 ret = AVERROR(ENOMEM);
386 p = (char *)av_basename(dirname);
391 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
393 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
394 path = av_malloc(path_size);
396 ret = AVERROR(ENOMEM);
400 if (hls->use_localtime_mkdir)
401 av_strlcpy(path, segment->filename, path_size);
402 else { // segment->filename contains basename only
403 av_strlcpy(path, dirname, path_size);
404 av_strlcat(path, segment->filename, path_size);
407 proto = avio_find_protocol_name(s->filename);
408 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
409 av_dict_set(&options, "method", "DELETE", 0);
410 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
412 ff_format_io_close(vs->avf, &out);
413 } else if (unlink(path) < 0) {
414 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
415 path, strerror(errno));
418 if ((segment->sub_filename[0] != '\0')) {
419 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
420 sub_path = av_malloc(sub_path_size);
422 ret = AVERROR(ENOMEM);
426 av_strlcpy(sub_path, dirname, sub_path_size);
427 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
429 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
430 av_dict_set(&options, "method", "DELETE", 0);
431 if ((ret = vs->avf->io_open(vs->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
435 ff_format_io_close(vs->avf, &out);
436 } else if (unlink(sub_path) < 0) {
437 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
438 sub_path, strerror(errno));
443 previous_segment = segment;
444 segment = previous_segment->next;
445 av_free(previous_segment);
455 static int randomize(uint8_t *buf, int len)
458 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
461 if (RAND_bytes(buf, len))
464 return AVERROR(ENOSYS);
466 return AVERROR(EINVAL);
469 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
471 HLSContext *hls = s->priv_data;
475 uint8_t key[KEYSIZE];
477 len = strlen(s->filename) + 4 + 1;
478 hls->key_basename = av_mallocz(len);
479 if (!hls->key_basename)
480 return AVERROR(ENOMEM);
482 av_strlcpy(hls->key_basename, s->filename, len);
483 av_strlcat(hls->key_basename, ".key", len);
486 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
487 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
489 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
490 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
493 if (!*hls->iv_string) {
494 uint8_t iv[16] = { 0 };
498 AV_WB64(iv + 8, vs->sequence);
500 memcpy(iv, hls->iv, sizeof(iv));
502 ff_data_to_hex(buf, iv, sizeof(iv), 0);
504 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
507 if (!*hls->key_uri) {
508 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
509 return AVERROR(EINVAL);
512 if (!*hls->key_file) {
513 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
514 return AVERROR(EINVAL);
517 if (!*hls->key_string) {
519 if ((ret = randomize(key, sizeof(key))) < 0) {
520 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
524 memcpy(key, hls->key, sizeof(key));
527 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
528 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
530 avio_seek(pb, 0, SEEK_CUR);
531 avio_write(pb, key, KEYSIZE);
538 static int hls_encryption_start(AVFormatContext *s)
540 HLSContext *hls = s->priv_data;
543 uint8_t key[KEYSIZE];
545 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
546 av_log(hls, AV_LOG_ERROR,
547 "error opening key info file %s\n", hls->key_info_file);
551 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
552 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
554 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
555 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
557 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
558 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
560 ff_format_io_close(s, &pb);
562 if (!*hls->key_uri) {
563 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
564 return AVERROR(EINVAL);
567 if (!*hls->key_file) {
568 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
569 return AVERROR(EINVAL);
572 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
573 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
577 ret = avio_read(pb, key, sizeof(key));
578 ff_format_io_close(s, &pb);
579 if (ret != sizeof(key)) {
580 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
581 if (ret >= 0 || ret == AVERROR_EOF)
582 ret = AVERROR(EINVAL);
585 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
590 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
592 int len = ff_get_line(s, buf, maxlen);
593 while (len > 0 && av_isspace(buf[len - 1]))
598 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
600 AVDictionary *options = NULL;
601 HLSContext *hls = s->priv_data;
603 AVFormatContext *vtt_oc = NULL;
604 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
607 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
612 oc->filename[0] = '\0';
613 oc->oformat = vs->oformat;
614 oc->interrupt_callback = s->interrupt_callback;
615 oc->max_delay = s->max_delay;
616 oc->opaque = s->opaque;
617 oc->io_open = s->io_open;
618 oc->io_close = s->io_close;
619 av_dict_copy(&oc->metadata, s->metadata, 0);
621 if(vs->vtt_oformat) {
622 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
625 vtt_oc = vs->vtt_avf;
626 vtt_oc->oformat = vs->vtt_oformat;
627 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
630 for (i = 0; i < vs->nb_streams; i++) {
632 AVFormatContext *loc;
633 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
638 if (!(st = avformat_new_stream(loc, NULL)))
639 return AVERROR(ENOMEM);
640 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
641 if (!oc->oformat->codec_tag ||
642 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
643 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
644 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
646 st->codecpar->codec_tag = 0;
649 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
650 st->time_base = vs->streams[i]->time_base;
651 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
654 vs->packets_written = 1;
657 vs->fmp4_init_mode = 0;
659 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
660 if (hls->max_seg_size > 0) {
661 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
662 return AVERROR_PATCHWELCOME;
665 vs->packets_written = 0;
666 vs->init_range_length = 0;
667 vs->fmp4_init_mode = !byterange_mode;
668 set_http_options(s, &options, hls);
669 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
672 if ((ret = s->io_open(s, &vs->out, vs->base_output_dirname, AVIO_FLAG_WRITE, &options)) < 0) {
673 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
677 if (hls->format_options_str) {
678 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
680 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
681 hls->format_options_str);
686 av_dict_copy(&options, hls->format_options, 0);
687 av_dict_set(&options, "fflags", "-autobsf", 0);
688 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
689 ret = avformat_init_output(oc, &options);
692 if (av_dict_count(options)) {
693 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
694 av_dict_free(&options);
695 return AVERROR(EINVAL);
698 av_dict_free(&options);
703 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
706 if (!av_strcasecmp(segment->filename,filename))
708 segment = segment->next;
710 return (HLSSegment *) NULL;
713 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
714 VariantStream *vs, HLSSegment *en,
715 double duration, int64_t pos, int64_t size)
717 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
718 strlen(vs->current_segment_final_filename_fmt)) {
719 av_strlcpy(vs->avf->filename, vs->current_segment_final_filename_fmt, sizeof(vs->avf->filename));
720 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
721 char * filename = av_strdup(vs->avf->filename); // %%s will be %s after strftime
724 return AVERROR(ENOMEM);
726 if (replace_int_data_in_filename(vs->avf->filename, sizeof(vs->avf->filename),
727 filename, 's', pos + size) < 1) {
728 av_log(hls, AV_LOG_ERROR,
729 "Invalid second level segment filename template '%s', "
730 "you can try to remove second_level_segment_size flag\n",
734 return AVERROR(EINVAL);
738 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
739 char * filename = av_strdup(vs->avf->filename); // %%t will be %t after strftime
742 return AVERROR(ENOMEM);
744 if (replace_int_data_in_filename(vs->avf->filename, sizeof(vs->avf->filename),
745 filename, 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
746 av_log(hls, AV_LOG_ERROR,
747 "Invalid second level segment filename template '%s', "
748 "you can try to remove second_level_segment_time flag\n",
752 return AVERROR(EINVAL);
760 static int sls_flag_check_duration_size_index(HLSContext *hls)
764 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
765 av_log(hls, AV_LOG_ERROR,
766 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
767 ret = AVERROR(EINVAL);
769 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
770 av_log(hls, AV_LOG_ERROR,
771 "second_level_segment_size hls_flag requires use_localtime to be true\n");
772 ret = AVERROR(EINVAL);
774 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
775 av_log(hls, AV_LOG_ERROR,
776 "second_level_segment_index hls_flag requires use_localtime to be true\n");
777 ret = AVERROR(EINVAL);
783 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
785 const char *proto = avio_find_protocol_name(vs->basename);
786 int segment_renaming_ok = proto && !strcmp(proto, "file");
789 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
790 av_log(hls, AV_LOG_ERROR,
791 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
792 ret = AVERROR(EINVAL);
794 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
795 av_log(hls, AV_LOG_ERROR,
796 "second_level_segment_size hls_flag works only with file protocol segment names\n");
797 ret = AVERROR(EINVAL);
803 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
804 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
805 strlen(vs->current_segment_final_filename_fmt)) {
806 ff_rename(old_filename, vs->avf->filename, hls);
810 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
812 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
813 char * filename = av_strdup(oc->filename); // %%d will be %d after strftime
815 return AVERROR(ENOMEM);
816 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
818 filename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
820 filename, 'd', vs->sequence) < 1) {
822 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
823 "you can try to remove second_level_segment_index flag\n",
826 return AVERROR(EINVAL);
830 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
831 av_strlcpy(vs->current_segment_final_filename_fmt, oc->filename,
832 sizeof(vs->current_segment_final_filename_fmt));
833 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
834 char * filename = av_strdup(oc->filename); // %%s will be %s after strftime
836 return AVERROR(ENOMEM);
837 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 's', 0) < 1) {
838 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
839 "you can try to remove second_level_segment_size flag\n",
842 return AVERROR(EINVAL);
846 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
847 char * filename = av_strdup(oc->filename); // %%t will be %t after strftime
849 return AVERROR(ENOMEM);
850 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, 't', 0) < 1) {
851 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
852 "you can try to remove second_level_segment_time flag\n",
855 return AVERROR(EINVAL);
863 /* Create a new segment and append it to the segment list */
864 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
865 VariantStream *vs, double duration, int64_t pos,
868 HLSSegment *en = av_malloc(sizeof(*en));
869 const char *filename;
870 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
874 return AVERROR(ENOMEM);
876 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
881 filename = av_basename(vs->avf->filename);
883 if (hls->use_localtime_mkdir) {
884 filename = vs->avf->filename;
886 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
887 && !byterange_mode) {
888 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
890 av_strlcpy(en->filename, filename, sizeof(en->filename));
893 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->filename), sizeof(en->sub_filename));
895 en->sub_filename[0] = '\0';
897 en->duration = duration;
903 if (vs->discontinuity) {
905 vs->discontinuity = 0;
908 if (hls->key_info_file || hls->encrypt) {
909 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
910 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
916 vs->last_segment->next = en;
918 vs->last_segment = en;
920 // EVENT or VOD playlists imply sliding window cannot be used
921 if (hls->pl_type != PLAYLIST_TYPE_NONE)
922 hls->max_nb_segments = 0;
924 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
926 vs->initial_prog_date_time += en->duration;
927 vs->segments = en->next;
928 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
930 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
932 !(hls->flags & HLS_SINGLE_FILE)) {
934 en->next = vs->old_segments;
935 vs->old_segments = en;
936 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
943 if (hls->max_seg_size > 0) {
951 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
953 HLSContext *hls = s->priv_data;
955 int ret = 0, is_segment = 0;
956 int64_t new_start_pos;
961 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
962 &s->interrupt_callback, NULL,
963 s->protocol_whitelist, s->protocol_blacklist)) < 0)
966 read_chomp_line(in, line, sizeof(line));
967 if (strcmp(line, "#EXTM3U")) {
968 ret = AVERROR_INVALIDDATA;
972 vs->discontinuity = 0;
973 while (!avio_feof(in)) {
974 read_chomp_line(in, line, sizeof(line));
975 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
976 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
977 if (tmp_sequence < vs->sequence)
978 av_log(hls, AV_LOG_VERBOSE,
979 "Found playlist sequence number was smaller """
980 "than specified start sequence number: %"PRId64" < %"PRId64", "
981 "omitting\n", tmp_sequence, hls->start_sequence);
983 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
984 vs->sequence = tmp_sequence;
986 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
988 vs->discontinuity = 1;
989 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
991 vs->duration = atof(ptr);
992 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
993 ptr = av_stristr(line, "URI=\"");
995 ptr += strlen("URI=\"");
996 end = av_stristr(ptr, ",");
998 av_strlcpy(hls->key_uri, ptr, end - ptr);
1000 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1004 ptr = av_stristr(line, "IV=0x");
1006 ptr += strlen("IV=0x");
1007 end = av_stristr(ptr, ",");
1009 av_strlcpy(hls->iv_string, ptr, end - ptr);
1011 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1015 } else if (av_strstart(line, "#", NULL)) {
1017 } else if (line[0]) {
1020 new_start_pos = avio_tell(vs->avf->pb);
1021 vs->size = new_start_pos - vs->start_pos;
1022 av_strlcpy(vs->avf->filename, line, sizeof(line));
1023 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1026 vs->start_pos = new_start_pos;
1036 static void hls_free_segments(HLSSegment *p)
1047 static void hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1049 size_t len = strlen(oc->filename);
1050 char final_filename[sizeof(oc->filename)];
1052 av_strlcpy(final_filename, oc->filename, len);
1053 final_filename[len-4] = '\0';
1054 ff_rename(oc->filename, final_filename, s);
1055 oc->filename[len-4] = '\0';
1058 static int get_relative_url(const char *master_url, const char *media_url,
1059 char *rel_url, int rel_url_buf_size)
1063 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1064 strrchr(master_url, '\\');
1066 base_len = FFABS(p - master_url);
1067 if (av_strncasecmp(master_url, media_url, base_len)) {
1068 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1069 return AVERROR(EINVAL);
1072 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1076 static int create_master_playlist(AVFormatContext *s,
1077 VariantStream * const input_vs)
1079 HLSContext *hls = s->priv_data;
1081 AVStream *vid_st, *aud_st;
1082 AVIOContext *master_pb = 0;
1083 AVDictionary *options = NULL;
1085 int m3u8_name_size, ret, bandwidth;
1086 char *m3u8_rel_name;
1088 input_vs->m3u8_created = 1;
1089 if (!hls->master_m3u8_created) {
1090 /* For the first time, wait until all the media playlists are created */
1091 for (i = 0; i < hls->nb_varstreams; i++)
1092 if (!hls->var_streams[i].m3u8_created)
1095 /* Keep publishing the master playlist at the configured rate */
1096 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1097 input_vs->number % hls->master_publish_rate)
1101 set_http_options(s, &options, hls);
1103 ret = s->io_open(s, &master_pb, hls->master_m3u8_url, AVIO_FLAG_WRITE,\
1105 av_dict_free(&options);
1107 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1108 hls->master_m3u8_url);
1112 ff_hls_write_playlist_version(master_pb, hls->version);
1114 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1115 for (i = 0; i < hls->nb_varstreams; i++) {
1116 vs = &(hls->var_streams[i]);
1118 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1119 m3u8_rel_name = av_malloc(m3u8_name_size);
1120 if (!m3u8_rel_name) {
1121 ret = AVERROR(ENOMEM);
1124 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1125 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1126 m3u8_rel_name, m3u8_name_size);
1128 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1134 for (j = 0; j < vs->nb_streams; j++) {
1135 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1136 vid_st = vs->streams[j];
1137 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1138 aud_st = vs->streams[j];
1141 if (!vid_st && !aud_st) {
1142 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1148 bandwidth += vid_st->codecpar->bit_rate;
1150 bandwidth += aud_st->codecpar->bit_rate;
1151 bandwidth += bandwidth / 10;
1153 ff_hls_write_stream_info(vid_st, master_pb, bandwidth, m3u8_rel_name);
1155 av_freep(&m3u8_rel_name);
1159 hls->master_m3u8_created = 1;
1160 av_freep(&m3u8_rel_name);
1161 ff_format_io_close(s, &master_pb);
1165 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1167 HLSContext *hls = s->priv_data;
1169 int target_duration = 0;
1171 AVIOContext *out = NULL;
1172 AVIOContext *sub_out = NULL;
1173 char temp_filename[1024];
1174 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1175 const char *proto = avio_find_protocol_name(s->filename);
1176 int use_rename = proto && !strcmp(proto, "file");
1177 static unsigned warned_non_file;
1178 char *key_uri = NULL;
1179 char *iv_string = NULL;
1180 AVDictionary *options = NULL;
1181 double prog_date_time = vs->initial_prog_date_time;
1182 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1183 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1186 if (byterange_mode) {
1191 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1195 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1199 if (!use_rename && !warned_non_file++)
1200 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1202 set_http_options(s, &options, hls);
1203 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", vs->m3u8_name);
1204 if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0)
1207 for (en = vs->segments; en; en = en->next) {
1208 if (target_duration <= en->duration)
1209 target_duration = hls_get_int_from_double(en->duration);
1212 vs->discontinuity_set = 0;
1213 ff_hls_write_playlist_header(out, hls->version, hls->allowcache,
1214 target_duration, sequence, hls->pl_type);
1216 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1217 avio_printf(out, "#EXT-X-DISCONTINUITY\n");
1218 vs->discontinuity_set = 1;
1220 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1221 avio_printf(out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1223 for (en = vs->segments; en; en = en->next) {
1224 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1225 av_strcasecmp(en->iv_string, iv_string))) {
1226 avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1228 avio_printf(out, ",IV=0x%s", en->iv_string);
1229 avio_printf(out, "\n");
1230 key_uri = en->key_uri;
1231 iv_string = en->iv_string;
1234 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1235 ff_hls_write_init_file(out, vs->fmp4_init_filename,
1236 hls->flags & HLS_SINGLE_FILE, en->size, en->pos);
1239 ff_hls_write_file_entry(out, en->discont, byterange_mode,
1240 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1241 en->size, en->pos, vs->baseurl,
1242 en->filename, prog_date_time_p);
1246 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1247 ff_hls_write_end_list(out);
1249 if( vs->vtt_m3u8_name ) {
1250 if ((ret = s->io_open(s, &sub_out, vs->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0)
1252 ff_hls_write_playlist_header(sub_out, hls->version, hls->allowcache,
1253 target_duration, sequence, PLAYLIST_TYPE_NONE);
1255 for (en = vs->segments; en; en = en->next) {
1256 ff_hls_write_file_entry(sub_out, 0, byterange_mode,
1257 en->duration, 0, en->size, en->pos,
1258 vs->baseurl, en->sub_filename, NULL);
1262 ff_hls_write_end_list(sub_out);
1267 av_dict_free(&options);
1268 ff_format_io_close(s, &out);
1269 ff_format_io_close(s, &sub_out);
1270 if (ret >= 0 && use_rename)
1271 ff_rename(temp_filename, vs->m3u8_name, s);
1273 if (ret >= 0 && hls->master_pl_name)
1274 if (create_master_playlist(s, vs) < 0)
1275 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1280 static int hls_start(AVFormatContext *s, VariantStream *vs)
1282 HLSContext *c = s->priv_data;
1283 AVFormatContext *oc = vs->avf;
1284 AVFormatContext *vtt_oc = vs->vtt_avf;
1285 AVDictionary *options = NULL;
1286 char *filename, iv_string[KEYSIZE*2 + 1];
1289 if (c->flags & HLS_SINGLE_FILE) {
1290 av_strlcpy(oc->filename, vs->basename,
1291 sizeof(oc->filename));
1292 if (vs->vtt_basename)
1293 av_strlcpy(vtt_oc->filename, vs->vtt_basename,
1294 sizeof(vtt_oc->filename));
1295 } else if (c->max_seg_size > 0) {
1296 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
1298 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1300 vs->basename, 'd', vs->sequence) < 1) {
1302 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", vs->basename);
1303 return AVERROR(EINVAL);
1306 if (c->use_localtime) {
1308 struct tm *tm, tmpbuf;
1310 tm = localtime_r(&now0, &tmpbuf);
1311 if (!strftime(oc->filename, sizeof(oc->filename), vs->basename, tm)) {
1312 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
1313 return AVERROR(EINVAL);
1316 err = sls_flag_use_localtime_filename(oc, c, vs);
1318 return AVERROR(ENOMEM);
1321 if (c->use_localtime_mkdir) {
1323 char *fn_copy = av_strdup(oc->filename);
1325 return AVERROR(ENOMEM);
1327 dir = av_dirname(fn_copy);
1328 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1329 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1331 return AVERROR(errno);
1335 } else if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename),
1337 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1339 vs->basename, 'd', vs->sequence) < 1) {
1341 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", vs->basename);
1342 return AVERROR(EINVAL);
1344 if( vs->vtt_basename) {
1345 if (replace_int_data_in_filename(vtt_oc->filename, sizeof(vtt_oc->filename),
1347 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1349 vs->vtt_basename, 'd', vs->sequence) < 1) {
1351 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1352 return AVERROR(EINVAL);
1358 set_http_options(s, &options, c);
1360 if (c->flags & HLS_TEMP_FILE) {
1361 av_strlcat(oc->filename, ".tmp", sizeof(oc->filename));
1364 if (c->key_info_file || c->encrypt) {
1365 if (c->key_info_file && c->encrypt) {
1366 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1367 " will use -hls_key_info_file priority\n");
1370 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1371 if (c->key_info_file) {
1372 if ((err = hls_encryption_start(s)) < 0)
1375 if ((err = do_encrypt(s, vs)) < 0)
1378 c->encrypt_started = 1;
1380 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1383 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1385 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1386 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1389 filename = av_asprintf("crypto:%s", oc->filename);
1391 err = AVERROR(ENOMEM);
1394 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1396 av_dict_free(&options);
1400 if ((err = hlsenc_io_open(s, &oc->pb, oc->filename, &options)) < 0)
1402 if (vs->vtt_basename) {
1403 set_http_options(s, &options, c);
1404 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->filename, &options)) < 0)
1407 av_dict_free(&options);
1409 if (c->segment_type == SEGMENT_TYPE_FMP4 && !(c->flags & HLS_SINGLE_FILE)) {
1412 /* We only require one PAT/PMT per segment. */
1413 if (oc->oformat->priv_class && oc->priv_data) {
1416 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1418 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1419 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1420 av_opt_set(oc->priv_data, "pat_period", period, 0);
1424 if (vs->vtt_basename) {
1425 err = avformat_write_header(vtt_oc,NULL);
1432 av_dict_free(&options);
1437 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1440 time_t t = time(NULL);
1441 struct tm *p, tmbuf;
1442 HLSContext *hls = s->priv_data;
1444 p = localtime_r(&t, &tmbuf);
1445 // no %s support when strftime returned error or left format string unchanged
1446 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1447 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1448 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1450 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1453 static int format_name(char *name, int name_buf_len, int i)
1456 char extension[10] = {'\0'};
1458 p = strrchr(name, '.');
1460 av_strlcpy(extension, p, sizeof(extension));
1464 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1466 if (strlen(extension))
1467 av_strlcat(name, extension, name_buf_len);
1472 static int get_nth_codec_stream_index(AVFormatContext *s,
1473 enum AVMediaType codec_type,
1476 unsigned int stream_index, cnt;
1477 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1480 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1481 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1483 if (cnt == stream_id)
1484 return stream_index;
1490 static int parse_variant_stream_mapstring(AVFormatContext *s)
1492 HLSContext *hls = s->priv_data;
1495 enum AVMediaType codec_type;
1496 int nb_varstreams, nb_streams;
1497 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1501 * Expected format for var_stream_map string is as below:
1503 * This string specifies how to group the audio, video and subtitle streams
1504 * into different variant streams. The variant stream groups are separated
1507 * a:, v:, s: are keys to specify audio, video and subtitle streams
1508 * respectively. Allowed values are 0 to 9 digits (limited just based on
1512 p = av_strdup(hls->var_stream_map);
1514 while(av_strtok(q, " \t", &saveptr1)) {
1516 hls->nb_varstreams++;
1520 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1521 if (!hls->var_streams)
1522 return AVERROR(ENOMEM);
1524 p = hls->var_stream_map;
1526 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1529 if (nb_varstreams < hls->nb_varstreams)
1530 vs = &(hls->var_streams[nb_varstreams++]);
1532 return AVERROR(EINVAL);
1535 while (q < varstr + strlen(varstr)) {
1536 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1537 !av_strncasecmp(q, "s:", 2))
1541 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1543 return AVERROR(ENOMEM);
1546 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1549 if (av_strstart(keyval, "v:", &val)) {
1550 codec_type = AVMEDIA_TYPE_VIDEO;
1551 } else if (av_strstart(keyval, "a:", &val)) {
1552 codec_type = AVMEDIA_TYPE_AUDIO;
1553 } else if (av_strstart(keyval, "s:", &val)) {
1554 codec_type = AVMEDIA_TYPE_SUBTITLE;
1556 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1557 return AVERROR(EINVAL);
1561 if (av_isdigit(*val))
1562 stream_index = get_nth_codec_stream_index (s, codec_type,
1565 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1566 vs->streams[nb_streams++] = s->streams[stream_index];
1568 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1569 return AVERROR(EINVAL);
1573 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1574 hls->nb_varstreams);
1579 static int update_variant_stream_info(AVFormatContext *s) {
1580 HLSContext *hls = s->priv_data;
1583 if (hls->var_stream_map) {
1584 return parse_variant_stream_mapstring(s);
1586 //By default, a single variant stream with all the codec streams is created
1587 hls->nb_varstreams = 1;
1588 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
1589 hls->nb_varstreams);
1590 if (!hls->var_streams)
1591 return AVERROR(ENOMEM);
1593 hls->var_streams[0].nb_streams = s->nb_streams;
1594 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
1595 hls->var_streams[0].nb_streams);
1596 if (!hls->var_streams[0].streams)
1597 return AVERROR(ENOMEM);
1599 for (i = 0; i < s->nb_streams; i++)
1600 hls->var_streams[0].streams[i] = s->streams[i];
1605 static int update_master_pl_info(AVFormatContext *s) {
1606 HLSContext *hls = s->priv_data;
1607 int m3u8_name_size, ret;
1610 m3u8_name_size = strlen(s->filename) + strlen(hls->master_pl_name) + 1;
1611 hls->master_m3u8_url = av_malloc(m3u8_name_size);
1612 if (!hls->master_m3u8_url) {
1613 ret = AVERROR(ENOMEM);
1617 av_strlcpy(hls->master_m3u8_url, s->filename, m3u8_name_size);
1618 p = strrchr(hls->master_m3u8_url, '/') ?
1619 strrchr(hls->master_m3u8_url, '/') :
1620 strrchr(hls->master_m3u8_url, '\\');
1623 av_strlcat(hls->master_m3u8_url, hls->master_pl_name, m3u8_name_size);
1625 av_strlcpy(hls->master_m3u8_url, hls->master_pl_name, m3u8_name_size);
1631 static int hls_write_header(AVFormatContext *s)
1633 HLSContext *hls = s->priv_data;
1636 const char *pattern = "%d.ts";
1637 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
1638 const char *vtt_pattern = "%d.vtt";
1639 AVDictionary *options = NULL;
1640 int basename_size = 0;
1641 int vtt_basename_size = 0, m3u8_name_size = 0;
1642 VariantStream *vs = NULL;
1643 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
1645 ret = update_variant_stream_info(s);
1647 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
1652 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
1653 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
1654 ret = AVERROR(EINVAL);
1655 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
1659 if (hls->master_pl_name) {
1660 ret = update_master_pl_info(s);
1662 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
1668 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1671 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
1672 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
1673 time_t t = time(NULL); // we will need it in either case
1674 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
1675 hls->start_sequence = (int64_t)t;
1676 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
1678 struct tm *p, tmbuf;
1679 if (!(p = localtime_r(&t, &tmbuf)))
1680 return AVERROR(ENOMEM);
1681 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
1682 return AVERROR(ENOMEM);
1683 hls->start_sequence = strtoll(b, NULL, 10);
1685 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
1688 for (i = 0; i < hls->nb_varstreams; i++) {
1689 vs = &hls->var_streams[i];
1691 vs->sequence = hls->start_sequence;
1692 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
1693 vs->start_pts = AV_NOPTS_VALUE;
1694 vs->end_pts = AV_NOPTS_VALUE;
1695 vs->current_segment_final_filename_fmt[0] = '\0';
1697 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1698 // Independent segments cannot be guaranteed when splitting by time
1699 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
1700 av_log(s, AV_LOG_WARNING,
1701 "'split_by_time' and 'independent_segments' cannot be enabled together. "
1702 "Disabling 'independent_segments' flag\n");
1705 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
1708 vs->initial_prog_date_time = now0;
1711 if (hls->format_options_str) {
1712 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
1714 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
1719 for (j = 0; j < vs->nb_streams; j++) {
1721 vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
1723 vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
1726 if (vs->has_video > 1)
1727 av_log(s, AV_LOG_WARNING,
1728 "More than a single video stream present, "
1729 "expect issues decoding it.\n");
1731 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1732 vs->oformat = av_guess_format("mp4", NULL, NULL);
1734 vs->oformat = av_guess_format("mpegts", NULL, NULL);
1738 ret = AVERROR_MUXER_NOT_FOUND;
1742 if(vs->has_subtitle) {
1743 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
1745 ret = AVERROR_MUXER_NOT_FOUND;
1750 if (hls->segment_filename) {
1751 basename_size = strlen(hls->segment_filename) + 1;
1752 if (hls->nb_varstreams > 1) {
1753 basename_size += strlen(POSTFIX_PATTERN);
1755 vs->basename = av_malloc(basename_size);
1756 if (!vs->basename) {
1757 ret = AVERROR(ENOMEM);
1761 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
1763 if (hls->flags & HLS_SINGLE_FILE) {
1764 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1771 if (hls->use_localtime) {
1772 basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1;
1774 basename_size = strlen(s->filename) + strlen(pattern) + 1;
1777 if (hls->nb_varstreams > 1) {
1778 basename_size += strlen(POSTFIX_PATTERN);
1781 vs->basename = av_malloc(basename_size);
1782 if (!vs->basename) {
1783 ret = AVERROR(ENOMEM);
1787 av_strlcpy(vs->basename, s->filename, basename_size);
1789 p = strrchr(vs->basename, '.');
1792 if (hls->use_localtime) {
1793 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
1795 av_strlcat(vs->basename, pattern, basename_size);
1799 m3u8_name_size = strlen(s->filename) + 1;
1800 if (hls->nb_varstreams > 1) {
1801 m3u8_name_size += strlen(POSTFIX_PATTERN);
1804 vs->m3u8_name = av_malloc(m3u8_name_size);
1805 if (!vs->m3u8_name ) {
1806 ret = AVERROR(ENOMEM);
1810 av_strlcpy(vs->m3u8_name, s->filename, m3u8_name_size);
1812 if (hls->nb_varstreams > 1) {
1813 ret = format_name(vs->basename, basename_size, i);
1816 ret = format_name(vs->m3u8_name, m3u8_name_size, i);
1821 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1822 if (hls->nb_varstreams > 1)
1823 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
1824 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
1825 if (!vs->fmp4_init_filename ) {
1826 ret = AVERROR(ENOMEM);
1829 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
1830 fmp4_init_filename_len);
1831 if (hls->nb_varstreams > 1) {
1832 ret = format_name(vs->fmp4_init_filename, fmp4_init_filename_len, i);
1837 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
1838 fmp4_init_filename_len = strlen(vs->fmp4_init_filename) + 1;
1839 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
1840 if (!vs->base_output_dirname) {
1841 ret = AVERROR(ENOMEM);
1844 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
1845 fmp4_init_filename_len);
1847 fmp4_init_filename_len = strlen(vs->m3u8_name) +
1848 strlen(vs->fmp4_init_filename) + 1;
1850 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
1851 if (!vs->base_output_dirname) {
1852 ret = AVERROR(ENOMEM);
1856 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
1857 fmp4_init_filename_len);
1858 p = strrchr(vs->base_output_dirname, '/');
1861 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
1862 fmp4_init_filename_len);
1864 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
1865 fmp4_init_filename_len);
1870 if (!hls->use_localtime) {
1871 ret = sls_flag_check_duration_size_index(hls);
1876 ret = sls_flag_check_duration_size(hls, vs);
1881 if(vs->has_subtitle) {
1883 if (hls->flags & HLS_SINGLE_FILE)
1884 vtt_pattern = ".vtt";
1885 vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1;
1886 if (hls->nb_varstreams > 1) {
1887 vtt_basename_size += strlen(POSTFIX_PATTERN);
1890 vs->vtt_basename = av_malloc(vtt_basename_size);
1891 if (!vs->vtt_basename) {
1892 ret = AVERROR(ENOMEM);
1895 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
1896 if (!vs->vtt_m3u8_name ) {
1897 ret = AVERROR(ENOMEM);
1900 av_strlcpy(vs->vtt_basename, s->filename, vtt_basename_size);
1901 p = strrchr(vs->vtt_basename, '.');
1905 if( hls->subtitle_filename ) {
1906 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
1908 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
1909 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
1911 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
1913 if (hls->nb_varstreams > 1) {
1914 ret= format_name(vs->vtt_basename, vtt_basename_size, i);
1917 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
1925 baseurl_len = strlen(hls->baseurl);
1926 vs->baseurl = av_malloc(baseurl_len);
1928 ret = AVERROR(ENOMEM);
1931 av_strlcpy(vs->baseurl, hls->baseurl, baseurl_len);
1934 if ((hls->flags & HLS_SINGLE_FILE) && (hls->segment_type == SEGMENT_TYPE_FMP4)) {
1935 vs->fmp4_init_filename = av_strdup(vs->basename);
1936 if (!vs->fmp4_init_filename) {
1937 ret = AVERROR(ENOMEM);
1942 if ((ret = hls_mux_init(s, vs)) < 0)
1945 if (hls->flags & HLS_APPEND_LIST) {
1946 parse_playlist(s, vs->m3u8_name, vs);
1947 vs->discontinuity = 1;
1948 if (hls->init_time > 0) {
1949 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
1950 " hls_init_time value will have no effect\n");
1952 hls->recording_time = hls->time * AV_TIME_BASE;
1956 if (hls->segment_type != SEGMENT_TYPE_FMP4 || hls->flags & HLS_SINGLE_FILE) {
1957 if ((ret = hls_start(s, vs)) < 0)
1961 av_dict_copy(&options, hls->format_options, 0);
1962 ret = avformat_write_header(vs->avf, &options);
1963 if (av_dict_count(options)) {
1964 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
1965 ret = AVERROR(EINVAL);
1966 av_dict_free(&options);
1969 av_dict_free(&options);
1970 //av_assert0(s->nb_streams == hls->avf->nb_streams);
1971 for (j = 0; j < vs->nb_streams; j++) {
1973 AVStream *outer_st = vs->streams[j];
1975 if (hls->max_seg_size > 0) {
1976 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
1977 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
1978 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
1979 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
1980 outer_st->codecpar->bit_rate, hls->max_seg_size);
1984 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
1985 inner_st = vs->avf->streams[j];
1986 else if (vs->vtt_avf)
1987 inner_st = vs->vtt_avf->streams[0];
1989 /* We have a subtitle stream, when the user does not want one */
1993 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
1999 av_freep(&hls->key_basename);
2000 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2001 vs = &hls->var_streams[i];
2002 av_freep(&vs->basename);
2003 av_freep(&vs->vtt_basename);
2004 av_freep(&vs->fmp4_init_filename);
2005 av_freep(&vs->m3u8_name);
2006 av_freep(&vs->vtt_m3u8_name);
2007 av_freep(&vs->streams);
2008 av_freep(&vs->baseurl);
2010 avformat_free_context(vs->avf);
2012 avformat_free_context(vs->vtt_avf);
2014 av_freep(&hls->var_streams);
2015 av_freep(&hls->master_m3u8_url);
2020 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2022 HLSContext *hls = s->priv_data;
2023 AVFormatContext *oc = NULL;
2024 AVStream *st = s->streams[pkt->stream_index];
2025 int64_t end_pts = 0;
2027 int ret = 0, can_split = 1, i, j;
2028 int stream_index = 0;
2029 int range_length = 0;
2030 uint8_t *buffer = NULL;
2031 VariantStream *vs = NULL;
2033 for (i = 0; i < hls->nb_varstreams; i++) {
2034 vs = &hls->var_streams[i];
2035 for (j = 0; j < vs->nb_streams; j++) {
2036 if (vs->streams[j] == st) {
2037 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2053 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2054 return AVERROR(ENOMEM);
2057 end_pts = hls->recording_time * vs->number;
2059 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2060 /* reset end_pts, hls->recording_time at end of the init hls list */
2061 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2062 int after_init_list_dur = (vs->sequence - vs->nb_entries ) * hls->time * AV_TIME_BASE;
2063 hls->recording_time = hls->time * AV_TIME_BASE;
2064 end_pts = init_list_dur + after_init_list_dur ;
2067 if (vs->start_pts == AV_NOPTS_VALUE) {
2068 vs->start_pts = pkt->pts;
2071 if (vs->has_video) {
2072 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2073 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2074 is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2076 if (pkt->pts == AV_NOPTS_VALUE)
2077 is_ref_pkt = can_split = 0;
2080 if (vs->end_pts == AV_NOPTS_VALUE)
2081 vs->end_pts = pkt->pts;
2082 if (vs->new_start) {
2084 vs->duration = (double)(pkt->pts - vs->end_pts)
2085 * st->time_base.num / st->time_base.den;
2086 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2088 if (pkt->duration) {
2089 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2091 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2092 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2098 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2099 end_pts, AV_TIME_BASE_Q) >= 0) {
2100 int64_t new_start_pos;
2101 char *old_filename = av_strdup(vs->avf->filename);
2102 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2104 if (!old_filename) {
2105 return AVERROR(ENOMEM);
2108 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2110 new_start_pos = avio_tell(vs->avf->pb);
2111 vs->size = new_start_pos - vs->start_pos;
2113 if (!byterange_mode) {
2114 if (hls->segment_type == SEGMENT_TYPE_FMP4 && !vs->init_range_length) {
2116 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2117 avio_write(vs->out, buffer, range_length);
2118 vs->init_range_length = range_length;
2119 avio_open_dyn_buf(&oc->pb);
2120 vs->packets_written = 0;
2121 ff_format_io_close(s, &vs->out);
2122 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2124 hlsenc_io_close(s, &oc->pb, oc->filename);
2127 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->filename);
2130 if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) {
2131 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2132 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4)
2133 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2134 hls_rename_temp_file(s, oc);
2137 if (vs->fmp4_init_mode) {
2141 if (!vs->fmp4_init_mode || byterange_mode)
2142 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2143 vs->start_pos = new_start_pos;
2145 av_free(old_filename);
2149 vs->end_pts = pkt->pts;
2152 vs->fmp4_init_mode = 0;
2153 if (hls->flags & HLS_SINGLE_FILE) {
2155 } else if (hls->max_seg_size > 0) {
2156 if (vs->start_pos >= hls->max_seg_size) {
2158 sls_flag_file_rename(hls, vs, old_filename);
2159 ret = hls_start(s, vs);
2161 /* When split segment by byte, the duration is short than hls_time,
2162 * so it is not enough one segment duration as hls_time, */
2167 sls_flag_file_rename(hls, vs, old_filename);
2168 ret = hls_start(s, vs);
2170 av_free(old_filename);
2176 if (!vs->fmp4_init_mode || byterange_mode)
2177 if ((ret = hls_window(s, 0, vs)) < 0) {
2182 vs->packets_written++;
2183 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2188 static int hls_write_trailer(struct AVFormatContext *s)
2190 HLSContext *hls = s->priv_data;
2191 AVFormatContext *oc = NULL;
2192 AVFormatContext *vtt_oc = NULL;
2193 char *old_filename = NULL;
2195 VariantStream *vs = NULL;
2197 for (i = 0; i < hls->nb_varstreams; i++) {
2198 vs = &hls->var_streams[i];
2201 vtt_oc = vs->vtt_avf;
2202 old_filename = av_strdup(vs->avf->filename);
2204 if (!old_filename) {
2205 return AVERROR(ENOMEM);
2209 av_write_trailer(oc);
2211 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2212 ff_format_io_close(s, &oc->pb);
2214 if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) {
2215 hls_rename_temp_file(s, oc);
2218 /* after av_write_trailer, then duration + 1 duration per packet */
2219 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2222 sls_flag_file_rename(hls, vs, old_filename);
2226 av_write_trailer(vtt_oc);
2227 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2228 ff_format_io_close(s, &vtt_oc->pb);
2230 av_freep(&vs->basename);
2231 av_freep(&vs->base_output_dirname);
2232 avformat_free_context(oc);
2235 hls_window(s, 1, vs);
2237 av_freep(&vs->fmp4_init_filename);
2239 av_freep(&vs->vtt_basename);
2240 av_freep(&vs->vtt_m3u8_name);
2241 avformat_free_context(vtt_oc);
2244 hls_free_segments(vs->segments);
2245 hls_free_segments(vs->old_segments);
2246 av_free(old_filename);
2247 av_freep(&vs->m3u8_name);
2248 av_freep(&vs->streams);
2249 av_freep(&vs->baseurl);
2252 av_freep(&hls->key_basename);
2253 av_freep(&hls->var_streams);
2254 av_freep(&hls->master_m3u8_url);
2258 #define OFFSET(x) offsetof(HLSContext, x)
2259 #define E AV_OPT_FLAG_ENCODING_PARAM
2260 static const AVOption options[] = {
2261 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2262 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2263 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2264 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2265 {"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},
2266 {"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},
2268 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2270 {"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},
2271 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2272 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2273 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2274 {"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},
2275 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2276 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2277 {"hls_enc_key_url", "url to access the key to decrypt the segments", OFFSET(key_url), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2278 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2279 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2280 {"hls_segment_type", "set hls segment files type", OFFSET(segment_type), AV_OPT_TYPE_INT, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, SEGMENT_TYPE_FMP4, E, "segment_type"},
2281 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2282 {"fmp4", "make segment file to fragment mp4 files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_FMP4 }, 0, UINT_MAX, E, "segment_type"},
2283 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2284 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2285 {"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"},
2286 {"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"},
2287 {"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"},
2288 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2289 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2290 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2291 {"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"},
2292 {"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"},
2293 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2294 {"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"},
2295 {"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"},
2296 {"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"},
2297 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2298 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2299 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2300 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2301 {"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" },
2302 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2303 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2304 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2305 {"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" },
2306 {"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" },
2307 {"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" },
2308 {"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" },
2309 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2310 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2311 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2312 {"master_pl_publish_rate", "Publish master play list every after this many segment intervals", OFFSET(master_publish_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT_MAX, E},
2313 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2317 static const AVClass hls_class = {
2318 .class_name = "hls muxer",
2319 .item_name = av_default_item_name,
2321 .version = LIBAVUTIL_VERSION_INT,
2325 AVOutputFormat ff_hls_muxer = {
2327 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2328 .extensions = "m3u8",
2329 .priv_data_size = sizeof(HLSContext),
2330 .audio_codec = AV_CODEC_ID_AAC,
2331 .video_codec = AV_CODEC_ID_H264,
2332 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2333 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
2334 .write_header = hls_write_header,
2335 .write_packet = hls_write_packet,
2336 .write_trailer = hls_write_trailer,
2337 .priv_class = &hls_class,