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"
48 #if CONFIG_HTTP_PROTOCOL
51 #include "hlsplaylist.h"
53 #include "os_support.h"
56 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
57 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
58 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
59 } StartSequenceSourceType;
62 CODEC_ATTRIBUTE_WRITTEN = 0,
63 CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN,
64 } CodecAttributeStatus;
67 #define LINE_BUFFER_SIZE 1024
68 #define HLS_MICROSECOND_UNIT 1000000
69 #define POSTFIX_PATTERN "_%d"
71 typedef struct HLSSegment {
73 char sub_filename[1024];
74 double duration; /* in seconds */
78 unsigned var_stream_idx;
80 char key_uri[LINE_BUFFER_SIZE + 1];
81 char iv_string[KEYSIZE*2 + 1];
83 struct HLSSegment *next;
86 typedef enum HLSFlags {
87 // Generate a single media file and use byte ranges in the playlist.
88 HLS_SINGLE_FILE = (1 << 0),
89 HLS_DELETE_SEGMENTS = (1 << 1),
90 HLS_ROUND_DURATIONS = (1 << 2),
91 HLS_DISCONT_START = (1 << 3),
92 HLS_OMIT_ENDLIST = (1 << 4),
93 HLS_SPLIT_BY_TIME = (1 << 5),
94 HLS_APPEND_LIST = (1 << 6),
95 HLS_PROGRAM_DATE_TIME = (1 << 7),
96 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
97 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
98 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
99 HLS_TEMP_FILE = (1 << 11),
100 HLS_PERIODIC_REKEY = (1 << 12),
101 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
109 typedef struct VariantStream {
110 unsigned var_stream_idx;
113 AVOutputFormat *oformat;
114 AVOutputFormat *vtt_oformat;
117 int init_range_length;
119 AVFormatContext *avf;
120 AVFormatContext *vtt_avf;
125 double dpp; // duration per packet
128 double duration; // last segment duration computed so far, in seconds
129 int64_t start_pos; // last segment starting position
130 int64_t size; // last segment size
132 int discontinuity_set;
134 int reference_stream_index;
136 HLSSegment *segments;
137 HLSSegment *last_segment;
138 HLSSegment *old_segments;
145 double initial_prog_date_time;
146 char current_segment_final_filename_fmt[1024]; // when renaming segments
148 char *fmp4_init_filename;
149 char *base_output_dirname;
152 char codec_attr[128];
153 CodecAttributeStatus attr_status;
154 unsigned int nb_streams;
155 int m3u8_created; /* status of media play-list creation */
156 char *agroup; /* audio group name */
157 char *ccgroup; /* closed caption group name */
161 typedef struct ClosedCaptionsStream {
162 char *ccgroup; /* closed caption group name */
163 char *instreamid; /* closed captions INSTREAM-ID */
164 char *language; /* closed captions langauge */
165 } ClosedCaptionsStream;
167 typedef struct HLSContext {
168 const AVClass *class; // Class for private options.
169 int64_t start_sequence;
170 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
172 float time; // Set by a private option.
173 float init_time; // Set by a private option.
174 int max_nb_segments; // Set by a private option.
175 int hls_delete_threshold; // Set by a private option.
177 int wrap; // Set by a private option.
179 uint32_t flags; // enum HLSFlags
180 uint32_t pl_type; // enum PlaylistType
181 char *segment_filename;
182 char *fmp4_init_filename;
185 int use_localtime; ///< flag to expand filename with localtime
186 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
188 int64_t recording_time;
189 int64_t max_seg_size; // every segment file max size
192 char *format_options_str;
193 char *vtt_format_options_str;
194 char *subtitle_filename;
195 AVDictionary *format_options;
205 char key_file[LINE_BUFFER_SIZE + 1];
206 char key_uri[LINE_BUFFER_SIZE + 1];
207 char key_string[KEYSIZE*2 + 1];
208 char iv_string[KEYSIZE*2 + 1];
209 AVDictionary *vtt_format_options;
214 VariantStream *var_streams;
215 unsigned int nb_varstreams;
216 ClosedCaptionsStream *cc_streams;
217 unsigned int nb_ccstreams;
219 int master_m3u8_created; /* status of master play-list creation */
220 char *master_m3u8_url; /* URL of the master m3u8 file */
221 int version; /* HLS version */
222 char *var_stream_map; /* user specified variant stream map string */
223 char *cc_stream_map; /* user specified closed caption streams map string */
224 char *master_pl_name;
225 unsigned int master_publish_rate;
227 AVIOContext *m3u8_out;
228 AVIOContext *sub_m3u8_out;
232 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
233 AVDictionary **options) {
234 HLSContext *hls = s->priv_data;
235 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
236 int err = AVERROR_MUXER_NOT_FOUND;
237 if (!*pb || !http_base_proto || !hls->http_persistent) {
238 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
239 #if CONFIG_HTTP_PROTOCOL
241 URLContext *http_url_context = ffio_geturlcontext(*pb);
242 av_assert0(http_url_context);
243 err = ff_http_do_new_request(http_url_context, filename);
249 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
250 HLSContext *hls = s->priv_data;
251 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
252 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
253 ff_format_io_close(s, pb);
254 #if CONFIG_HTTP_PROTOCOL
256 URLContext *http_url_context = ffio_geturlcontext(*pb);
257 av_assert0(http_url_context);
259 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
264 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
266 int http_base_proto = ff_is_http_proto(s->url);
269 av_dict_set(options, "method", c->method, 0);
270 } else if (http_base_proto) {
271 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
272 av_dict_set(options, "method", "PUT", 0);
275 av_dict_set(options, "user_agent", c->user_agent, 0);
276 if (c->http_persistent)
277 av_dict_set_int(options, "multiple_requests", 1, 0);
279 av_dict_set_int(options, "timeout", c->timeout, 0);
282 static void write_codec_attr(AVStream *st, VariantStream *vs) {
283 int codec_strlen = strlen(vs->codec_attr);
286 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
288 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
291 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
292 uint8_t *data = st->codecpar->extradata;
293 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
294 snprintf(attr, sizeof(attr),
295 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
299 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
300 snprintf(attr, sizeof(attr), "mp4a.40.33");
301 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
302 snprintf(attr, sizeof(attr), "mp4a.40.34");
303 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
304 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
305 snprintf(attr, sizeof(attr), "mp4a.40.2");
306 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
307 snprintf(attr, sizeof(attr), "ac-3");
308 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
309 snprintf(attr, sizeof(attr), "ec-3");
313 // Don't write the same attribute multiple times
314 if (!av_stristr(vs->codec_attr, attr)) {
315 snprintf(vs->codec_attr + codec_strlen,
316 sizeof(vs->codec_attr) - codec_strlen,
317 "%s%s", codec_strlen ? "," : "", attr);
322 vs->codec_attr[0] = '\0';
323 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
327 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
332 int nd, addchar_count;
336 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
343 if (c == '%' && *(p+1) == '%') // %%
345 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
348 while (av_isdigit(*(p + addchar_count))) {
349 nd = nd * 10 + *(p + addchar_count) - '0';
353 if (*(p + addchar_count) == placeholder) {
354 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
355 p += (addchar_count + 1);
363 av_bprint_append_data(&buf, p, addchar_count);
366 if (!av_bprint_is_complete(&buf)) {
367 av_bprint_finalize(&buf, NULL);
370 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
376 static void write_styp(AVIOContext *pb)
379 ffio_wfourcc(pb, "styp");
380 ffio_wfourcc(pb, "msdh");
381 avio_wb32(pb, 0); /* minor */
382 ffio_wfourcc(pb, "msdh");
383 ffio_wfourcc(pb, "msix");
386 static int flush_dynbuf(VariantStream *vs, int *range_length)
388 AVFormatContext *ctx = vs->avf;
392 return AVERROR(EINVAL);
396 av_write_frame(ctx, NULL);
400 *range_length = avio_close_dyn_buf(ctx->pb, &buffer);
402 avio_write(vs->out, buffer, *range_length);
406 return avio_open_dyn_buf(&ctx->pb);
409 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
412 HLSSegment *segment, *previous_segment = NULL;
413 float playlist_duration = 0.0f;
414 int ret = 0, path_size, sub_path_size;
416 char *dirname = NULL, *p, *sub_path;
418 char *vtt_dirname = NULL;
419 AVDictionary *options = NULL;
420 AVIOContext *out = NULL;
421 const char *proto = NULL;
423 segment = vs->segments;
425 playlist_duration += segment->duration;
426 segment = segment->next;
429 segment = vs->old_segments;
432 playlist_duration -= segment->duration;
433 previous_segment = segment;
434 segment = previous_segment->next;
436 if (playlist_duration <= -previous_segment->duration) {
437 previous_segment->next = NULL;
440 if (segment_cnt >= hls->hls_delete_threshold) {
441 previous_segment->next = NULL;
446 if (segment && !hls->use_localtime_mkdir) {
447 if (hls->segment_filename) {
448 dirname = av_strdup(hls->segment_filename);
450 dirname = av_strdup(vs->avf->url);
453 ret = AVERROR(ENOMEM);
456 p = (char *)av_basename(dirname);
462 char * r_dirname = dirname;
464 /* if %v is present in the file's directory */
465 if (dirname && av_stristr(dirname, "%v")) {
467 if (replace_int_data_in_filename(&r_dirname, dirname, 'v', segment->var_stream_idx) < 1) {
468 ret = AVERROR(EINVAL);
475 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
477 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
478 path = av_malloc(path_size);
480 ret = AVERROR(ENOMEM);
484 if (hls->use_localtime_mkdir)
485 av_strlcpy(path, segment->filename, path_size);
486 else { // segment->filename contains basename only
487 av_strlcpy(path, dirname, path_size);
488 av_strlcat(path, segment->filename, path_size);
491 proto = avio_find_protocol_name(s->url);
492 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
493 av_dict_set(&options, "method", "DELETE", 0);
494 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
496 ff_format_io_close(vs->avf, &out);
497 } else if (unlink(path) < 0) {
498 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
499 path, strerror(errno));
502 if ((segment->sub_filename[0] != '\0')) {
503 vtt_dirname = av_strdup(vs->vtt_avf->url);
505 ret = AVERROR(ENOMEM);
508 p = (char *)av_basename(vtt_dirname);
510 sub_path_size = strlen(segment->sub_filename) + 1 + strlen(vtt_dirname);
511 sub_path = av_malloc(sub_path_size);
513 ret = AVERROR(ENOMEM);
517 av_strlcpy(sub_path, vtt_dirname, sub_path_size);
518 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
520 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
521 av_dict_set(&options, "method", "DELETE", 0);
522 if ((ret = vs->vtt_avf->io_open(vs->vtt_avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
526 ff_format_io_close(vs->vtt_avf, &out);
527 } else if (unlink(sub_path) < 0) {
528 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
529 sub_path, strerror(errno));
534 previous_segment = segment;
535 segment = previous_segment->next;
536 av_free(previous_segment);
542 av_free(vtt_dirname);
547 static int randomize(uint8_t *buf, int len)
550 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
553 if (RAND_bytes(buf, len))
556 return AVERROR(ENOSYS);
558 return AVERROR(EINVAL);
561 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
563 HLSContext *hls = s->priv_data;
567 uint8_t key[KEYSIZE];
569 len = strlen(s->url) + 4 + 1;
570 hls->key_basename = av_mallocz(len);
571 if (!hls->key_basename)
572 return AVERROR(ENOMEM);
574 av_strlcpy(hls->key_basename, s->url, len);
575 av_strlcat(hls->key_basename, ".key", len);
578 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
579 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
581 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
582 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
585 if (!*hls->iv_string) {
586 uint8_t iv[16] = { 0 };
590 AV_WB64(iv + 8, vs->sequence);
592 memcpy(iv, hls->iv, sizeof(iv));
594 ff_data_to_hex(buf, iv, sizeof(iv), 0);
596 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
599 if (!*hls->key_uri) {
600 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
601 return AVERROR(EINVAL);
604 if (!*hls->key_file) {
605 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
606 return AVERROR(EINVAL);
609 if (!*hls->key_string) {
611 if ((ret = randomize(key, sizeof(key))) < 0) {
612 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
616 memcpy(key, hls->key, sizeof(key));
619 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
620 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
622 avio_seek(pb, 0, SEEK_CUR);
623 avio_write(pb, key, KEYSIZE);
630 static int hls_encryption_start(AVFormatContext *s)
632 HLSContext *hls = s->priv_data;
635 uint8_t key[KEYSIZE];
637 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
638 av_log(hls, AV_LOG_ERROR,
639 "error opening key info file %s\n", hls->key_info_file);
643 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
644 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
646 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
647 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
649 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
650 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
652 ff_format_io_close(s, &pb);
654 if (!*hls->key_uri) {
655 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
656 return AVERROR(EINVAL);
659 if (!*hls->key_file) {
660 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
661 return AVERROR(EINVAL);
664 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
665 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
669 ret = avio_read(pb, key, sizeof(key));
670 ff_format_io_close(s, &pb);
671 if (ret != sizeof(key)) {
672 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
673 if (ret >= 0 || ret == AVERROR_EOF)
674 ret = AVERROR(EINVAL);
677 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
682 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
684 AVDictionary *options = NULL;
685 HLSContext *hls = s->priv_data;
687 AVFormatContext *vtt_oc = NULL;
688 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
691 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
696 oc->url = av_strdup("");
698 return AVERROR(ENOMEM);
700 oc->oformat = vs->oformat;
701 oc->interrupt_callback = s->interrupt_callback;
702 oc->max_delay = s->max_delay;
703 oc->opaque = s->opaque;
704 oc->io_open = s->io_open;
705 oc->io_close = s->io_close;
706 av_dict_copy(&oc->metadata, s->metadata, 0);
708 if(vs->vtt_oformat) {
709 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
712 vtt_oc = vs->vtt_avf;
713 vtt_oc->oformat = vs->vtt_oformat;
714 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
717 for (i = 0; i < vs->nb_streams; i++) {
719 AVFormatContext *loc;
720 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
725 if (!(st = avformat_new_stream(loc, NULL)))
726 return AVERROR(ENOMEM);
727 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
728 if (!oc->oformat->codec_tag ||
729 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
730 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
731 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
733 st->codecpar->codec_tag = 0;
736 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
737 st->time_base = vs->streams[i]->time_base;
738 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
741 vs->packets_written = 1;
745 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
746 if (hls->max_seg_size > 0) {
747 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
748 return AVERROR_PATCHWELCOME;
751 vs->packets_written = 0;
752 vs->init_range_length = 0;
753 set_http_options(s, &options, hls);
754 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
757 if (byterange_mode) {
758 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
760 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
762 av_dict_free(&options);
764 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
768 if (hls->format_options_str) {
769 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
771 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
772 hls->format_options_str);
777 av_dict_copy(&options, hls->format_options, 0);
778 av_dict_set(&options, "fflags", "-autobsf", 0);
779 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
780 ret = avformat_init_output(oc, &options);
783 if (av_dict_count(options)) {
784 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
785 av_dict_free(&options);
786 return AVERROR(EINVAL);
789 av_dict_free(&options);
794 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
797 if (!av_strcasecmp(segment->filename,filename))
799 segment = segment->next;
801 return (HLSSegment *) NULL;
804 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
805 VariantStream *vs, HLSSegment *en,
806 double duration, int64_t pos, int64_t size)
808 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
809 strlen(vs->current_segment_final_filename_fmt)) {
810 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
813 return AVERROR(ENOMEM);
815 ff_format_set_url(vs->avf, new_url);
816 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
817 char *filename = NULL;
818 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
819 av_log(hls, AV_LOG_ERROR,
820 "Invalid second level segment filename template '%s', "
821 "you can try to remove second_level_segment_size flag\n",
825 return AVERROR(EINVAL);
827 ff_format_set_url(vs->avf, filename);
829 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
830 char *filename = NULL;
831 if (replace_int_data_in_filename(&filename, vs->avf->url,
832 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
833 av_log(hls, AV_LOG_ERROR,
834 "Invalid second level segment filename template '%s', "
835 "you can try to remove second_level_segment_time flag\n",
839 return AVERROR(EINVAL);
841 ff_format_set_url(vs->avf, filename);
847 static int sls_flag_check_duration_size_index(HLSContext *hls)
851 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
852 av_log(hls, AV_LOG_ERROR,
853 "second_level_segment_duration hls_flag requires strftime to be true\n");
854 ret = AVERROR(EINVAL);
856 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
857 av_log(hls, AV_LOG_ERROR,
858 "second_level_segment_size hls_flag requires strfime to be true\n");
859 ret = AVERROR(EINVAL);
861 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
862 av_log(hls, AV_LOG_ERROR,
863 "second_level_segment_index hls_flag requires strftime to be true\n");
864 ret = AVERROR(EINVAL);
870 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
872 const char *proto = avio_find_protocol_name(vs->basename);
873 int segment_renaming_ok = proto && !strcmp(proto, "file");
876 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
877 av_log(hls, AV_LOG_ERROR,
878 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
879 ret = AVERROR(EINVAL);
881 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
882 av_log(hls, AV_LOG_ERROR,
883 "second_level_segment_size hls_flag works only with file protocol segment names\n");
884 ret = AVERROR(EINVAL);
890 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
891 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
892 strlen(vs->current_segment_final_filename_fmt)) {
893 ff_rename(old_filename, vs->avf->url, hls);
897 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
899 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
900 char *filename = NULL;
901 if (replace_int_data_in_filename(&filename,
903 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
905 oc->url, 'd', vs->sequence) < 1) {
907 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
908 "you can try to remove second_level_segment_index flag\n",
911 return AVERROR(EINVAL);
913 ff_format_set_url(oc, filename);
915 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
916 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
917 sizeof(vs->current_segment_final_filename_fmt));
918 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
919 char *filename = NULL;
920 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
921 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
922 "you can try to remove second_level_segment_size flag\n",
925 return AVERROR(EINVAL);
927 ff_format_set_url(oc, filename);
929 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
930 char *filename = NULL;
931 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
932 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
933 "you can try to remove second_level_segment_time flag\n",
936 return AVERROR(EINVAL);
938 ff_format_set_url(oc, filename);
944 /* Create a new segment and append it to the segment list */
945 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
946 VariantStream *vs, double duration, int64_t pos,
949 HLSSegment *en = av_malloc(sizeof(*en));
950 const char *filename;
951 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
955 return AVERROR(ENOMEM);
957 en->var_stream_idx = vs->var_stream_idx;
958 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
963 filename = av_basename(vs->avf->url);
965 if (hls->use_localtime_mkdir) {
966 filename = vs->avf->url;
968 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
969 && !byterange_mode) {
970 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
972 av_strlcpy(en->filename, filename, sizeof(en->filename));
975 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
977 en->sub_filename[0] = '\0';
979 en->duration = duration;
985 if (vs->discontinuity) {
987 vs->discontinuity = 0;
990 if (hls->key_info_file || hls->encrypt) {
991 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
992 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
998 vs->last_segment->next = en;
1000 vs->last_segment = en;
1002 // EVENT or VOD playlists imply sliding window cannot be used
1003 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1004 hls->max_nb_segments = 0;
1006 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1008 vs->initial_prog_date_time += en->duration;
1009 vs->segments = en->next;
1010 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1012 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1014 !(hls->flags & HLS_SINGLE_FILE)) {
1016 en->next = vs->old_segments;
1017 vs->old_segments = en;
1018 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1025 if (hls->max_seg_size > 0) {
1033 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1035 HLSContext *hls = s->priv_data;
1037 int ret = 0, is_segment = 0;
1038 int64_t new_start_pos;
1043 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1044 &s->interrupt_callback, NULL,
1045 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1048 ff_get_chomp_line(in, line, sizeof(line));
1049 if (strcmp(line, "#EXTM3U")) {
1050 ret = AVERROR_INVALIDDATA;
1054 vs->discontinuity = 0;
1055 while (!avio_feof(in)) {
1056 ff_get_chomp_line(in, line, sizeof(line));
1057 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1058 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1059 if (tmp_sequence < vs->sequence)
1060 av_log(hls, AV_LOG_VERBOSE,
1061 "Found playlist sequence number was smaller """
1062 "than specified start sequence number: %"PRId64" < %"PRId64", "
1063 "omitting\n", tmp_sequence, hls->start_sequence);
1065 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1066 vs->sequence = tmp_sequence;
1068 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1070 vs->discontinuity = 1;
1071 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1073 vs->duration = atof(ptr);
1074 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1075 ptr = av_stristr(line, "URI=\"");
1077 ptr += strlen("URI=\"");
1078 end = av_stristr(ptr, ",");
1080 av_strlcpy(hls->key_uri, ptr, end - ptr);
1082 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1086 ptr = av_stristr(line, "IV=0x");
1088 ptr += strlen("IV=0x");
1089 end = av_stristr(ptr, ",");
1091 av_strlcpy(hls->iv_string, ptr, end - ptr);
1093 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1097 } else if (av_strstart(line, "#", NULL)) {
1099 } else if (line[0]) {
1101 char *new_file = av_strdup(line);
1103 ret = AVERROR(ENOMEM);
1106 ff_format_set_url(vs->avf, new_file);
1108 new_start_pos = avio_tell(vs->avf->pb);
1109 vs->size = new_start_pos - vs->start_pos;
1110 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1113 vs->start_pos = new_start_pos;
1123 static void hls_free_segments(HLSSegment *p)
1134 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1136 size_t len = strlen(oc->url);
1137 char *final_filename = av_strdup(oc->url);
1140 if (!final_filename)
1141 return AVERROR(ENOMEM);
1142 final_filename[len-4] = '\0';
1143 ret = ff_rename(oc->url, final_filename, s);
1144 oc->url[len-4] = '\0';
1145 av_freep(&final_filename);
1149 static int get_relative_url(const char *master_url, const char *media_url,
1150 char *rel_url, int rel_url_buf_size)
1154 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1155 strrchr(master_url, '\\');
1157 base_len = FFABS(p - master_url);
1158 if (av_strncasecmp(master_url, media_url, base_len)) {
1159 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1160 return AVERROR(EINVAL);
1163 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1167 static int64_t get_stream_bit_rate(AVStream *stream) {
1168 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1170 AV_PKT_DATA_CPB_PROPERTIES,
1174 if (stream->codecpar->bit_rate)
1175 return stream->codecpar->bit_rate;
1177 return props->max_bitrate;
1182 static int create_master_playlist(AVFormatContext *s,
1183 VariantStream * const input_vs)
1185 HLSContext *hls = s->priv_data;
1186 VariantStream *vs, *temp_vs;
1187 AVStream *vid_st, *aud_st;
1188 AVDictionary *options = NULL;
1190 int m3u8_name_size, ret, bandwidth;
1191 char *m3u8_rel_name, *ccgroup;
1192 ClosedCaptionsStream *ccs;
1194 input_vs->m3u8_created = 1;
1195 if (!hls->master_m3u8_created) {
1196 /* For the first time, wait until all the media playlists are created */
1197 for (i = 0; i < hls->nb_varstreams; i++)
1198 if (!hls->var_streams[i].m3u8_created)
1201 /* Keep publishing the master playlist at the configured rate */
1202 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1203 input_vs->number % hls->master_publish_rate)
1207 set_http_options(s, &options, hls);
1209 ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
1210 av_dict_free(&options);
1212 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1213 hls->master_m3u8_url);
1217 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1219 for (i = 0; i < hls->nb_ccstreams; i++) {
1220 ccs = &(hls->cc_streams[i]);
1221 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1222 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1223 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1225 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1226 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1229 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1230 for (i = 0; i < hls->nb_varstreams; i++) {
1231 vs = &(hls->var_streams[i]);
1233 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1236 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1237 m3u8_rel_name = av_malloc(m3u8_name_size);
1238 if (!m3u8_rel_name) {
1239 ret = AVERROR(ENOMEM);
1242 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1243 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1244 m3u8_rel_name, m3u8_name_size);
1246 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1250 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, 0, 1);
1252 av_freep(&m3u8_rel_name);
1255 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1256 for (i = 0; i < hls->nb_varstreams; i++) {
1257 vs = &(hls->var_streams[i]);
1259 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1260 m3u8_rel_name = av_malloc(m3u8_name_size);
1261 if (!m3u8_rel_name) {
1262 ret = AVERROR(ENOMEM);
1265 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1266 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1267 m3u8_rel_name, m3u8_name_size);
1269 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1275 for (j = 0; j < vs->nb_streams; j++) {
1276 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1277 vid_st = vs->streams[j];
1278 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1279 aud_st = vs->streams[j];
1282 if (!vid_st && !aud_st) {
1283 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1288 * Traverse through the list of audio only rendition streams and find
1289 * the rendition which has highest bitrate in the same audio group
1292 for (j = 0; j < hls->nb_varstreams; j++) {
1293 temp_vs = &(hls->var_streams[j]);
1294 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1296 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1298 aud_st = temp_vs->streams[0];
1299 if (temp_vs->streams[0]->codecpar->bit_rate >
1300 aud_st->codecpar->bit_rate)
1301 aud_st = temp_vs->streams[0];
1308 bandwidth += get_stream_bit_rate(vid_st);
1310 bandwidth += get_stream_bit_rate(aud_st);
1311 bandwidth += bandwidth / 10;
1314 if (vid_st && vs->ccgroup) {
1315 /* check if this group name is available in the cc map string */
1316 for (j = 0; j < hls->nb_ccstreams; j++) {
1317 ccs = &(hls->cc_streams[j]);
1318 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1319 ccgroup = vs->ccgroup;
1323 if (j == hls->nb_ccstreams)
1324 av_log(NULL, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1328 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1329 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1331 av_freep(&m3u8_rel_name);
1335 hls->master_m3u8_created = 1;
1336 av_freep(&m3u8_rel_name);
1337 hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
1341 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1343 HLSContext *hls = s->priv_data;
1345 int target_duration = 0;
1347 char temp_filename[1024];
1348 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1349 const char *proto = avio_find_protocol_name(s->url);
1350 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
1351 static unsigned warned_non_file;
1352 char *key_uri = NULL;
1353 char *iv_string = NULL;
1354 AVDictionary *options = NULL;
1355 double prog_date_time = vs->initial_prog_date_time;
1356 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1357 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1360 if (byterange_mode) {
1365 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1369 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1373 if (!use_temp_file && !warned_non_file++)
1374 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1376 set_http_options(s, &options, hls);
1377 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1378 if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0)
1381 for (en = vs->segments; en; en = en->next) {
1382 if (target_duration <= en->duration)
1383 target_duration = lrint(en->duration);
1386 vs->discontinuity_set = 0;
1387 ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
1388 target_duration, sequence, hls->pl_type);
1390 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1391 avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
1392 vs->discontinuity_set = 1;
1394 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1395 avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1397 for (en = vs->segments; en; en = en->next) {
1398 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1399 av_strcasecmp(en->iv_string, iv_string))) {
1400 avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1402 avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
1403 avio_printf(hls->m3u8_out, "\n");
1404 key_uri = en->key_uri;
1405 iv_string = en->iv_string;
1408 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1409 ff_hls_write_init_file(hls->m3u8_out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1410 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1413 ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
1414 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1415 en->size, en->pos, vs->baseurl,
1416 en->filename, prog_date_time_p);
1418 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1422 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1423 ff_hls_write_end_list(hls->m3u8_out);
1425 if( vs->vtt_m3u8_name ) {
1426 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0)
1428 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1429 target_duration, sequence, PLAYLIST_TYPE_NONE);
1430 for (en = vs->segments; en; en = en->next) {
1431 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1432 en->duration, 0, en->size, en->pos,
1433 vs->baseurl, en->sub_filename, NULL);
1435 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1440 ff_hls_write_end_list(hls->sub_m3u8_out);
1445 av_dict_free(&options);
1446 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1447 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1449 ff_rename(temp_filename, vs->m3u8_name, s);
1451 if (ret >= 0 && hls->master_pl_name)
1452 if (create_master_playlist(s, vs) < 0)
1453 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1458 static int hls_start(AVFormatContext *s, VariantStream *vs)
1460 HLSContext *c = s->priv_data;
1461 AVFormatContext *oc = vs->avf;
1462 AVFormatContext *vtt_oc = vs->vtt_avf;
1463 AVDictionary *options = NULL;
1464 const char *proto = avio_find_protocol_name(s->url);
1465 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
1466 char *filename, iv_string[KEYSIZE*2 + 1];
1469 if (c->flags & HLS_SINGLE_FILE) {
1470 char *new_name = av_strdup(vs->basename);
1472 return AVERROR(ENOMEM);
1473 ff_format_set_url(oc, new_name);
1474 if (vs->vtt_basename) {
1475 new_name = av_strdup(vs->vtt_basename);
1477 return AVERROR(ENOMEM);
1478 ff_format_set_url(vtt_oc, new_name);
1480 } else if (c->max_seg_size > 0) {
1481 char *filename = NULL;
1482 if (replace_int_data_in_filename(&filename,
1484 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1486 vs->basename, 'd', vs->sequence) < 1) {
1489 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1490 return AVERROR(EINVAL);
1492 ff_format_set_url(oc, filename);
1494 if (c->use_localtime) {
1496 struct tm *tm, tmpbuf;
1497 int bufsize = strlen(vs->basename) + 1024;
1498 char *buf = av_mallocz(bufsize);
1500 return AVERROR(ENOMEM);
1502 tm = localtime_r(&now0, &tmpbuf);
1503 ff_format_set_url(oc, buf);
1504 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1505 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1506 return AVERROR(EINVAL);
1509 err = sls_flag_use_localtime_filename(oc, c, vs);
1511 return AVERROR(ENOMEM);
1514 if (c->use_localtime_mkdir) {
1516 char *fn_copy = av_strdup(oc->url);
1518 return AVERROR(ENOMEM);
1520 dir = av_dirname(fn_copy);
1521 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1522 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1524 return AVERROR(errno);
1529 char *filename = NULL;
1530 if (replace_int_data_in_filename(&filename,
1532 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1534 vs->basename, 'd', vs->sequence) < 1) {
1537 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1538 return AVERROR(EINVAL);
1540 ff_format_set_url(oc, filename);
1542 if( vs->vtt_basename) {
1543 char *filename = NULL;
1544 if (replace_int_data_in_filename(&filename,
1546 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1548 vs->vtt_basename, 'd', vs->sequence) < 1) {
1551 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1552 return AVERROR(EINVAL);
1554 ff_format_set_url(vtt_oc, filename);
1559 set_http_options(s, &options, c);
1561 if (use_temp_file) {
1562 char *new_name = av_asprintf("%s.tmp", oc->url);
1564 return AVERROR(ENOMEM);
1565 ff_format_set_url(oc, new_name);
1568 if (c->key_info_file || c->encrypt) {
1569 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1570 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1571 return AVERROR_PATCHWELCOME;
1574 if (c->key_info_file && c->encrypt) {
1575 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1576 " ignoring -hls_enc\n");
1579 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1580 if (c->key_info_file) {
1581 if ((err = hls_encryption_start(s)) < 0)
1584 if ((err = do_encrypt(s, vs)) < 0)
1587 c->encrypt_started = 1;
1589 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1592 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1594 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1595 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1598 filename = av_asprintf("crypto:%s", oc->url);
1600 err = AVERROR(ENOMEM);
1603 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1605 av_dict_free(&options);
1608 } else if (c->segment_type != SEGMENT_TYPE_FMP4) {
1609 if ((err = hlsenc_io_open(s, &oc->pb, oc->url, &options)) < 0)
1612 if (vs->vtt_basename) {
1613 set_http_options(s, &options, c);
1614 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0)
1617 av_dict_free(&options);
1619 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1620 /* We only require one PAT/PMT per segment. */
1621 if (oc->oformat->priv_class && oc->priv_data) {
1624 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1626 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1627 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1628 av_opt_set(oc->priv_data, "pat_period", period, 0);
1632 if (vs->vtt_basename) {
1633 err = avformat_write_header(vtt_oc,NULL);
1640 av_dict_free(&options);
1645 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1648 time_t t = time(NULL);
1649 struct tm *p, tmbuf;
1650 HLSContext *hls = s->priv_data;
1652 p = localtime_r(&t, &tmbuf);
1653 // no %s support when strftime returned error or left format string unchanged
1654 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1655 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1656 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1658 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1661 static int append_postfix(char *name, int name_buf_len, int i)
1664 char extension[10] = {'\0'};
1666 p = strrchr(name, '.');
1668 av_strlcpy(extension, p, sizeof(extension));
1672 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1674 if (strlen(extension))
1675 av_strlcat(name, extension, name_buf_len);
1680 static int validate_name(int nb_vs, const char *fn)
1682 const char *filename, *subdir_name;
1683 char *fn_dup = NULL;
1687 ret = AVERROR(EINVAL);
1691 fn_dup = av_strdup(fn);
1693 ret = AVERROR(ENOMEM);
1697 filename = av_basename(fn);
1698 subdir_name = av_dirname(fn_dup);
1700 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1701 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n",
1703 ret = AVERROR(EINVAL);
1707 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1708 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n",
1710 ret = AVERROR(EINVAL);
1719 static int format_name(char *buf, int buf_len, int index)
1721 const char *proto, *dir;
1722 char *orig_buf_dup = NULL, *mod_buf = NULL, *mod_buf_dup = NULL;
1725 if (!av_stristr(buf, "%v"))
1728 orig_buf_dup = av_strdup(buf);
1729 if (!orig_buf_dup) {
1730 ret = AVERROR(ENOMEM);
1734 if (replace_int_data_in_filename(&mod_buf, orig_buf_dup, 'v', index) < 1) {
1735 ret = AVERROR(EINVAL);
1738 av_strlcpy(buf, mod_buf, buf_len);
1740 proto = avio_find_protocol_name(orig_buf_dup);
1741 dir = av_dirname(orig_buf_dup);
1743 /* if %v is present in the file's directory, create sub-directory */
1744 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1745 mod_buf_dup = av_strdup(buf);
1747 ret = AVERROR(ENOMEM);
1751 dir = av_dirname(mod_buf_dup);
1752 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1753 ret = AVERROR(errno);
1759 av_freep(&orig_buf_dup);
1760 av_freep(&mod_buf_dup);
1765 static int get_nth_codec_stream_index(AVFormatContext *s,
1766 enum AVMediaType codec_type,
1769 unsigned int stream_index, cnt;
1770 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1773 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1774 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1776 if (cnt == stream_id)
1777 return stream_index;
1783 static int parse_variant_stream_mapstring(AVFormatContext *s)
1785 HLSContext *hls = s->priv_data;
1788 enum AVMediaType codec_type;
1789 int nb_varstreams, nb_streams;
1790 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1794 * Expected format for var_stream_map string is as below:
1796 * "a:0,agroup:a0 a:1,agroup:a1 v:0,agroup:a0 v:1,agroup:a1"
1797 * This string specifies how to group the audio, video and subtitle streams
1798 * into different variant streams. The variant stream groups are separated
1801 * a:, v:, s: are keys to specify audio, video and subtitle streams
1802 * respectively. Allowed values are 0 to 9 digits (limited just based on
1805 * agroup: is key to specify audio group. A string can be given as value.
1807 p = av_strdup(hls->var_stream_map);
1809 while(av_strtok(q, " \t", &saveptr1)) {
1811 hls->nb_varstreams++;
1815 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1816 if (!hls->var_streams)
1817 return AVERROR(ENOMEM);
1819 p = hls->var_stream_map;
1821 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1824 if (nb_varstreams < hls->nb_varstreams) {
1825 vs = &(hls->var_streams[nb_varstreams]);
1826 vs->var_stream_idx = nb_varstreams;
1829 return AVERROR(EINVAL);
1832 while (q < varstr + strlen(varstr)) {
1833 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1834 !av_strncasecmp(q, "s:", 2))
1838 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1840 return AVERROR(ENOMEM);
1843 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1846 if (av_strstart(keyval, "agroup:", &val)) {
1847 vs->agroup = av_strdup(val);
1849 return AVERROR(ENOMEM);
1851 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1852 vs->ccgroup = av_strdup(val);
1854 return AVERROR(ENOMEM);
1856 } else if (av_strstart(keyval, "v:", &val)) {
1857 codec_type = AVMEDIA_TYPE_VIDEO;
1858 } else if (av_strstart(keyval, "a:", &val)) {
1859 codec_type = AVMEDIA_TYPE_AUDIO;
1860 } else if (av_strstart(keyval, "s:", &val)) {
1861 codec_type = AVMEDIA_TYPE_SUBTITLE;
1863 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1864 return AVERROR(EINVAL);
1868 if (av_isdigit(*val))
1869 stream_index = get_nth_codec_stream_index (s, codec_type,
1872 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1873 vs->streams[nb_streams++] = s->streams[stream_index];
1875 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1876 return AVERROR(EINVAL);
1880 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1881 hls->nb_varstreams);
1886 static int parse_cc_stream_mapstring(AVFormatContext *s)
1888 HLSContext *hls = s->priv_data;
1890 char *p, *q, *ccstr, *keyval;
1891 char *saveptr1 = NULL, *saveptr2 = NULL;
1893 ClosedCaptionsStream *ccs;
1895 p = av_strdup(hls->cc_stream_map);
1897 while(av_strtok(q, " \t", &saveptr1)) {
1899 hls->nb_ccstreams++;
1903 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams);
1904 if (!hls->cc_streams)
1905 return AVERROR(ENOMEM);
1907 p = hls->cc_stream_map;
1909 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
1912 if (nb_ccstreams < hls->nb_ccstreams)
1913 ccs = &(hls->cc_streams[nb_ccstreams++]);
1915 return AVERROR(EINVAL);
1917 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
1920 if (av_strstart(keyval, "ccgroup:", &val)) {
1921 ccs->ccgroup = av_strdup(val);
1923 return AVERROR(ENOMEM);
1924 } else if (av_strstart(keyval, "instreamid:", &val)) {
1925 ccs->instreamid = av_strdup(val);
1926 if (!ccs->instreamid)
1927 return AVERROR(ENOMEM);
1928 } else if (av_strstart(keyval, "language:", &val)) {
1929 ccs->language = av_strdup(val);
1931 return AVERROR(ENOMEM);
1933 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1934 return AVERROR(EINVAL);
1938 if (!ccs->ccgroup || !ccs->instreamid) {
1939 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
1940 return AVERROR(EINVAL);
1943 if (av_strstart(ccs->instreamid, "CC", &val)) {
1944 if(atoi(val) < 1 || atoi(val) > 4) {
1945 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
1946 atoi(val), ccs->instreamid);
1947 return AVERROR(EINVAL);
1949 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
1950 if(atoi(val) < 1 || atoi(val) > 63) {
1951 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
1952 atoi(val), ccs->instreamid);
1953 return AVERROR(EINVAL);
1956 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n",
1958 return AVERROR(EINVAL);
1965 static int update_variant_stream_info(AVFormatContext *s) {
1966 HLSContext *hls = s->priv_data;
1970 if (hls->cc_stream_map) {
1971 ret = parse_cc_stream_mapstring(s);
1976 if (hls->var_stream_map) {
1977 return parse_variant_stream_mapstring(s);
1979 //By default, a single variant stream with all the codec streams is created
1980 hls->nb_varstreams = 1;
1981 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
1982 hls->nb_varstreams);
1983 if (!hls->var_streams)
1984 return AVERROR(ENOMEM);
1986 hls->var_streams[0].var_stream_idx = 0;
1987 hls->var_streams[0].nb_streams = s->nb_streams;
1988 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
1989 hls->var_streams[0].nb_streams);
1990 if (!hls->var_streams[0].streams)
1991 return AVERROR(ENOMEM);
1993 //by default, the first available ccgroup is mapped to the variant stream
1994 if (hls->nb_ccstreams) {
1995 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
1996 if (!hls->var_streams[0].ccgroup)
1997 return AVERROR(ENOMEM);
2000 for (i = 0; i < s->nb_streams; i++)
2001 hls->var_streams[0].streams[i] = s->streams[i];
2006 static int update_master_pl_info(AVFormatContext *s) {
2007 HLSContext *hls = s->priv_data;
2009 char *fn1= NULL, *fn2 = NULL;
2012 fn1 = av_strdup(s->url);
2014 ret = AVERROR(ENOMEM);
2018 dir = av_dirname(fn1);
2021 * if output file's directory has %v, variants are created in sub-directories
2022 * then master is created at the sub-directories level
2024 if (dir && av_stristr(av_basename(dir), "%v")) {
2025 fn2 = av_strdup(dir);
2027 ret = AVERROR(ENOMEM);
2030 dir = av_dirname(fn2);
2033 if (dir && strcmp(dir, "."))
2034 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2036 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2038 if (!hls->master_m3u8_url) {
2039 ret = AVERROR(ENOMEM);
2050 static int hls_write_header(AVFormatContext *s)
2052 HLSContext *hls = s->priv_data;
2054 AVDictionary *options = NULL;
2055 VariantStream *vs = NULL;
2057 for (i = 0; i < hls->nb_varstreams; i++) {
2058 vs = &hls->var_streams[i];
2060 av_dict_copy(&options, hls->format_options, 0);
2061 ret = avformat_write_header(vs->avf, &options);
2062 if (av_dict_count(options)) {
2063 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
2064 ret = AVERROR(EINVAL);
2065 av_dict_free(&options);
2068 av_dict_free(&options);
2069 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2070 for (j = 0; j < vs->nb_streams; j++) {
2072 AVStream *outer_st = vs->streams[j];
2074 if (hls->max_seg_size > 0) {
2075 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2076 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2077 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2078 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2079 outer_st->codecpar->bit_rate, hls->max_seg_size);
2083 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2084 inner_st = vs->avf->streams[j];
2085 else if (vs->vtt_avf)
2086 inner_st = vs->vtt_avf->streams[0];
2088 /* We have a subtitle stream, when the user does not want one */
2092 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2093 write_codec_attr(outer_st, vs);
2096 /* Update the Codec Attr string for the mapped audio groups */
2097 if (vs->has_video && vs->agroup) {
2098 for (j = 0; j < hls->nb_varstreams; j++) {
2099 VariantStream *vs_agroup = &(hls->var_streams[j]);
2100 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2101 vs_agroup->agroup &&
2102 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2103 write_codec_attr(vs_agroup->streams[0], vs);
2113 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2115 HLSContext *hls = s->priv_data;
2116 AVFormatContext *oc = NULL;
2117 AVStream *st = s->streams[pkt->stream_index];
2118 int64_t end_pts = 0;
2120 int ret = 0, can_split = 1, i, j;
2121 int stream_index = 0;
2122 int range_length = 0;
2123 const char *proto = avio_find_protocol_name(s->url);
2124 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
2125 uint8_t *buffer = NULL;
2126 VariantStream *vs = NULL;
2127 AVDictionary *options = NULL;
2128 char *old_filename = NULL;
2130 for (i = 0; i < hls->nb_varstreams; i++) {
2131 vs = &hls->var_streams[i];
2132 for (j = 0; j < vs->nb_streams; j++) {
2133 if (vs->streams[j] == st) {
2134 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2150 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2151 return AVERROR(ENOMEM);
2154 end_pts = hls->recording_time * vs->number;
2156 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2157 /* reset end_pts, hls->recording_time at end of the init hls list */
2158 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2159 int after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2160 hls->recording_time = hls->time * AV_TIME_BASE;
2161 end_pts = init_list_dur + after_init_list_dur ;
2164 if (vs->start_pts == AV_NOPTS_VALUE) {
2165 vs->start_pts = pkt->pts;
2168 if (vs->has_video) {
2169 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2170 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2171 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2173 if (pkt->pts == AV_NOPTS_VALUE)
2174 is_ref_pkt = can_split = 0;
2177 if (vs->end_pts == AV_NOPTS_VALUE)
2178 vs->end_pts = pkt->pts;
2179 if (vs->new_start) {
2181 vs->duration = (double)(pkt->pts - vs->end_pts)
2182 * st->time_base.num / st->time_base.den;
2183 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2185 if (pkt->duration) {
2186 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2188 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2189 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2195 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2196 end_pts, AV_TIME_BASE_Q) >= 0) {
2197 int64_t new_start_pos;
2198 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2200 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2202 new_start_pos = avio_tell(vs->avf->pb);
2203 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2204 vs->size = new_start_pos - vs->start_pos;
2206 vs->size = new_start_pos;
2209 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2210 if (!vs->init_range_length) {
2212 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2213 avio_write(vs->out, buffer, range_length);
2215 vs->init_range_length = range_length;
2216 avio_open_dyn_buf(&oc->pb);
2217 vs->packets_written = 0;
2218 vs->start_pos = range_length;
2219 if (!byterange_mode) {
2220 ff_format_io_close(s, &vs->out);
2221 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2225 if (!byterange_mode) {
2226 hlsenc_io_close(s, &oc->pb, oc->url);
2229 if (!byterange_mode) {
2231 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2235 // look to rename the asset name
2236 if (use_temp_file && oc->url[0]) {
2237 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2238 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4) {
2239 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2243 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2244 if (hls->flags & HLS_SINGLE_FILE) {
2245 ret = flush_dynbuf(vs, &range_length);
2247 av_free(old_filename);
2250 vs->size = range_length;
2252 set_http_options(s, &options, hls);
2253 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, &options);
2255 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n",
2259 write_styp(vs->out);
2260 ret = flush_dynbuf(vs, &range_length);
2264 ff_format_io_close(s, &vs->out);
2266 // rename that segment from .tmp to the real one
2267 if (use_temp_file && oc->url[0]) {
2268 hls_rename_temp_file(s, oc);
2269 av_free(old_filename);
2270 old_filename = av_strdup(vs->avf->url);
2272 if (!old_filename) {
2273 return AVERROR(ENOMEM);
2279 old_filename = av_strdup(vs->avf->url);
2280 if (!old_filename) {
2281 return AVERROR(ENOMEM);
2284 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2285 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2286 vs->end_pts = pkt->pts;
2289 av_free(old_filename);
2294 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2295 vs->start_pos = new_start_pos;
2297 vs->start_pos += vs->size;
2300 if (hls->flags & HLS_SINGLE_FILE) {
2302 } else if (hls->max_seg_size > 0) {
2303 if (vs->start_pos >= hls->max_seg_size) {
2305 sls_flag_file_rename(hls, vs, old_filename);
2306 ret = hls_start(s, vs);
2308 /* When split segment by byte, the duration is short than hls_time,
2309 * so it is not enough one segment duration as hls_time, */
2314 sls_flag_file_rename(hls, vs, old_filename);
2315 ret = hls_start(s, vs);
2317 av_free(old_filename);
2323 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2324 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2325 if ((ret = hls_window(s, 0, vs)) < 0) {
2331 vs->packets_written++;
2332 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2337 static int hls_write_trailer(struct AVFormatContext *s)
2339 HLSContext *hls = s->priv_data;
2340 AVFormatContext *oc = NULL;
2341 AVFormatContext *vtt_oc = NULL;
2342 char *old_filename = NULL;
2343 const char *proto = avio_find_protocol_name(s->url);
2344 int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE);
2347 VariantStream *vs = NULL;
2349 for (i = 0; i < hls->nb_varstreams; i++) {
2350 vs = &hls->var_streams[i];
2353 vtt_oc = vs->vtt_avf;
2354 old_filename = av_strdup(vs->avf->url);
2356 if (!old_filename) {
2357 return AVERROR(ENOMEM);
2359 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2360 int range_length = 0;
2361 if (!vs->init_range_length) {
2362 uint8_t *buffer = NULL;
2363 int range_length, byterange_mode;
2364 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2367 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2368 avio_write(vs->out, buffer, range_length);
2370 vs->init_range_length = range_length;
2371 avio_open_dyn_buf(&oc->pb);
2372 vs->packets_written = 0;
2373 vs->start_pos = range_length;
2374 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2375 if (!byterange_mode) {
2376 ff_format_io_close(s, &vs->out);
2377 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2380 if (!(hls->flags & HLS_SINGLE_FILE)) {
2381 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2383 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url);
2386 write_styp(vs->out);
2388 ret = flush_dynbuf(vs, &range_length);
2392 vs->size = range_length;
2393 ff_format_io_close(s, &vs->out);
2397 av_write_trailer(oc);
2399 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2400 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2402 if (hls->segment_type != SEGMENT_TYPE_FMP4)
2403 ff_format_io_close(s, &oc->pb);
2405 // rename that segment from .tmp to the real one
2406 if (use_temp_file && oc->url[0] && !(hls->flags & HLS_SINGLE_FILE)) {
2407 hls_rename_temp_file(s, oc);
2408 av_free(old_filename);
2409 old_filename = av_strdup(vs->avf->url);
2411 if (!old_filename) {
2412 return AVERROR(ENOMEM);
2416 /* after av_write_trailer, then duration + 1 duration per packet */
2417 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2420 sls_flag_file_rename(hls, vs, old_filename);
2424 av_write_trailer(vtt_oc);
2425 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2426 ff_format_io_close(s, &vtt_oc->pb);
2428 av_freep(&vs->basename);
2429 av_freep(&vs->base_output_dirname);
2430 avformat_free_context(oc);
2433 hls_window(s, 1, vs);
2435 av_freep(&vs->fmp4_init_filename);
2437 av_freep(&vs->vtt_basename);
2438 av_freep(&vs->vtt_m3u8_name);
2439 avformat_free_context(vtt_oc);
2442 hls_free_segments(vs->segments);
2443 hls_free_segments(vs->old_segments);
2444 av_free(old_filename);
2445 av_freep(&vs->m3u8_name);
2446 av_freep(&vs->streams);
2447 av_freep(&vs->agroup);
2448 av_freep(&vs->ccgroup);
2449 av_freep(&vs->baseurl);
2452 for (i = 0; i < hls->nb_ccstreams; i++) {
2453 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2454 av_freep(&ccs->ccgroup);
2455 av_freep(&ccs->instreamid);
2456 av_freep(&ccs->language);
2459 ff_format_io_close(s, &hls->m3u8_out);
2460 ff_format_io_close(s, &hls->sub_m3u8_out);
2461 av_freep(&hls->key_basename);
2462 av_freep(&hls->var_streams);
2463 av_freep(&hls->cc_streams);
2464 av_freep(&hls->master_m3u8_url);
2469 static int hls_init(AVFormatContext *s)
2474 HLSContext *hls = s->priv_data;
2475 const char *pattern = "%d.ts";
2476 VariantStream *vs = NULL;
2477 int basename_size = 0;
2478 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2479 const char *vtt_pattern = "%d.vtt";
2481 int vtt_basename_size = 0;
2482 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2484 ret = update_variant_stream_info(s);
2486 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2490 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2491 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2492 ret = AVERROR(EINVAL);
2493 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2497 ret = validate_name(hls->nb_varstreams, s->url);
2501 if (hls->segment_filename) {
2502 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2507 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2508 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2513 if (hls->subtitle_filename) {
2514 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2519 if (hls->master_pl_name) {
2520 ret = update_master_pl_info(s);
2522 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2528 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2531 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2532 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2533 time_t t = time(NULL); // we will need it in either case
2534 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2535 hls->start_sequence = (int64_t)t;
2536 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2538 struct tm *p, tmbuf;
2539 if (!(p = localtime_r(&t, &tmbuf)))
2540 return AVERROR(ENOMEM);
2541 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2542 return AVERROR(ENOMEM);
2543 hls->start_sequence = strtoll(b, NULL, 10);
2545 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2548 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2549 for (i = 0; i < hls->nb_varstreams; i++) {
2550 vs = &hls->var_streams[i];
2552 vs->m3u8_name = av_strdup(s->url);
2553 if (!vs->m3u8_name ) {
2554 ret = AVERROR(ENOMEM);
2557 ret = format_name(vs->m3u8_name, strlen(s->url) + 1, i);
2561 vs->sequence = hls->start_sequence;
2562 vs->start_pts = AV_NOPTS_VALUE;
2563 vs->end_pts = AV_NOPTS_VALUE;
2564 vs->current_segment_final_filename_fmt[0] = '\0';
2566 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2567 // Independent segments cannot be guaranteed when splitting by time
2568 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2569 av_log(s, AV_LOG_WARNING,
2570 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2571 "Disabling 'independent_segments' flag\n");
2574 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2577 vs->initial_prog_date_time = now0;
2579 if (hls->format_options_str) {
2580 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2582 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2587 for (j = 0; j < vs->nb_streams; j++) {
2588 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2589 /* Get one video stream to reference for split segments
2590 * so use the first video stream index. */
2591 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2592 vs->reference_stream_index = vs->streams[j]->index;
2594 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2597 if (vs->has_video > 1)
2598 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2599 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2600 vs->oformat = av_guess_format("mp4", NULL, NULL);
2602 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2606 ret = AVERROR_MUXER_NOT_FOUND;
2610 if (vs->has_subtitle) {
2611 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2613 ret = AVERROR_MUXER_NOT_FOUND;
2617 if (hls->segment_filename) {
2618 basename_size = strlen(hls->segment_filename) + 1;
2619 vs->basename = av_malloc(basename_size);
2620 if (!vs->basename) {
2621 ret = AVERROR(ENOMEM);
2625 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2626 ret = format_name(vs->basename, basename_size, i);
2630 if (hls->flags & HLS_SINGLE_FILE) {
2631 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2638 if (hls->use_localtime) {
2639 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2641 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2644 vs->basename = av_malloc(basename_size);
2645 if (!vs->basename) {
2646 ret = AVERROR(ENOMEM);
2650 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2652 p = strrchr(vs->basename, '.');
2655 if (hls->use_localtime) {
2656 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2658 av_strlcat(vs->basename, pattern, basename_size);
2662 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2663 if (hls->nb_varstreams > 1)
2664 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2665 if (hls->flags & HLS_SINGLE_FILE) {
2666 vs->fmp4_init_filename = av_strdup(vs->basename);
2667 if (!vs->fmp4_init_filename) {
2668 ret = AVERROR(ENOMEM);
2672 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2673 if (!vs->fmp4_init_filename ) {
2674 ret = AVERROR(ENOMEM);
2677 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2678 fmp4_init_filename_len);
2679 if (hls->nb_varstreams > 1) {
2680 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2685 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2686 strlen(vs->fmp4_init_filename) + 1;
2688 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2689 if (!vs->base_output_dirname) {
2690 ret = AVERROR(ENOMEM);
2694 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2695 fmp4_init_filename_len);
2696 p = strrchr(vs->base_output_dirname, '/');
2699 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2700 fmp4_init_filename_len);
2702 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2703 fmp4_init_filename_len);
2708 if (!hls->use_localtime) {
2709 ret = sls_flag_check_duration_size_index(hls);
2714 ret = sls_flag_check_duration_size(hls, vs);
2719 if (vs->has_subtitle) {
2721 if (hls->flags & HLS_SINGLE_FILE)
2722 vtt_pattern = ".vtt";
2723 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2725 vs->vtt_basename = av_malloc(vtt_basename_size);
2726 if (!vs->vtt_basename) {
2727 ret = AVERROR(ENOMEM);
2730 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2731 if (!vs->vtt_m3u8_name ) {
2732 ret = AVERROR(ENOMEM);
2735 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2736 p = strrchr(vs->vtt_basename, '.');
2740 if ( hls->subtitle_filename ) {
2741 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2742 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2746 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2747 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2749 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2753 vs->baseurl = av_strdup(hls->baseurl);
2755 ret = AVERROR(ENOMEM);
2760 if ((ret = hls_mux_init(s, vs)) < 0)
2763 if (hls->flags & HLS_APPEND_LIST) {
2764 parse_playlist(s, vs->m3u8_name, vs);
2765 vs->discontinuity = 1;
2766 if (hls->init_time > 0) {
2767 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2768 " hls_init_time value will have no effect\n");
2770 hls->recording_time = hls->time * AV_TIME_BASE;
2774 if ((ret = hls_start(s, vs)) < 0)
2780 av_freep(&hls->key_basename);
2781 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2782 vs = &hls->var_streams[i];
2783 av_freep(&vs->basename);
2784 av_freep(&vs->vtt_basename);
2785 av_freep(&vs->fmp4_init_filename);
2786 av_freep(&vs->m3u8_name);
2787 av_freep(&vs->vtt_m3u8_name);
2788 av_freep(&vs->streams);
2789 av_freep(&vs->agroup);
2790 av_freep(&vs->ccgroup);
2791 av_freep(&vs->baseurl);
2793 avformat_free_context(vs->avf);
2795 avformat_free_context(vs->vtt_avf);
2797 for (i = 0; i < hls->nb_ccstreams; i++) {
2798 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2799 av_freep(&ccs->ccgroup);
2800 av_freep(&ccs->instreamid);
2801 av_freep(&ccs->language);
2803 av_freep(&hls->var_streams);
2804 av_freep(&hls->cc_streams);
2805 av_freep(&hls->master_m3u8_url);
2811 #define OFFSET(x) offsetof(HLSContext, x)
2812 #define E AV_OPT_FLAG_ENCODING_PARAM
2813 static const AVOption options[] = {
2814 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2815 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2816 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2817 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2818 {"hls_delete_threshold", "set number of unreferenced segments to keep before deleting", OFFSET(hls_delete_threshold), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, E},
2819 {"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},
2820 {"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},
2822 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2824 {"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},
2825 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2826 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2827 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2828 {"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},
2829 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2830 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2831 {"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},
2832 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2833 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2834 {"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"},
2835 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2836 {"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"},
2837 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2838 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2839 {"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"},
2840 {"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"},
2841 {"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"},
2842 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2843 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2844 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2845 {"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"},
2846 {"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"},
2847 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2848 {"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"},
2849 {"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"},
2850 {"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"},
2851 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2852 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2853 #if FF_API_HLS_USE_LOCALTIME
2854 {"use_localtime", "set filename expansion with strftime at segment creation(will be deprecated )", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2856 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2857 #if FF_API_HLS_USE_LOCALTIME
2858 {"use_localtime_mkdir", "create last directory component in strftime-generated filename(will be deprecated)", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2860 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2861 {"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" },
2862 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2863 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2864 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2865 {"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" },
2866 {"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" },
2867 {"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" },
2868 {"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" },
2869 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2870 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2871 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2872 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2873 {"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},
2874 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2875 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2879 static const AVClass hls_class = {
2880 .class_name = "hls muxer",
2881 .item_name = av_default_item_name,
2883 .version = LIBAVUTIL_VERSION_INT,
2887 AVOutputFormat ff_hls_muxer = {
2889 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2890 .extensions = "m3u8",
2891 .priv_data_size = sizeof(HLSContext),
2892 .audio_codec = AV_CODEC_ID_AAC,
2893 .video_codec = AV_CODEC_ID_H264,
2894 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2895 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
2897 .write_header = hls_write_header,
2898 .write_packet = hls_write_packet,
2899 .write_trailer = hls_write_trailer,
2900 .priv_class = &hls_class,