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 */
79 char key_uri[LINE_BUFFER_SIZE + 1];
80 char iv_string[KEYSIZE*2 + 1];
82 struct HLSSegment *next;
85 typedef enum HLSFlags {
86 // Generate a single media file and use byte ranges in the playlist.
87 HLS_SINGLE_FILE = (1 << 0),
88 HLS_DELETE_SEGMENTS = (1 << 1),
89 HLS_ROUND_DURATIONS = (1 << 2),
90 HLS_DISCONT_START = (1 << 3),
91 HLS_OMIT_ENDLIST = (1 << 4),
92 HLS_SPLIT_BY_TIME = (1 << 5),
93 HLS_APPEND_LIST = (1 << 6),
94 HLS_PROGRAM_DATE_TIME = (1 << 7),
95 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
96 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
97 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
98 HLS_TEMP_FILE = (1 << 11),
99 HLS_PERIODIC_REKEY = (1 << 12),
100 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
108 typedef struct VariantStream {
111 AVOutputFormat *oformat;
112 AVOutputFormat *vtt_oformat;
115 int init_range_length;
117 AVFormatContext *avf;
118 AVFormatContext *vtt_avf;
123 double dpp; // duration per packet
126 double duration; // last segment duration computed so far, in seconds
127 int64_t start_pos; // last segment starting position
128 int64_t size; // last segment size
130 int discontinuity_set;
132 int reference_stream_index;
134 HLSSegment *segments;
135 HLSSegment *last_segment;
136 HLSSegment *old_segments;
143 double initial_prog_date_time;
144 char current_segment_final_filename_fmt[1024]; // when renaming segments
146 char *fmp4_init_filename;
147 char *base_output_dirname;
151 char codec_attr[128];
152 CodecAttributeStatus attr_status;
153 unsigned int nb_streams;
154 int m3u8_created; /* status of media play-list creation */
155 char *agroup; /* audio group name */
156 char *ccgroup; /* closed caption group name */
160 typedef struct ClosedCaptionsStream {
161 char *ccgroup; /* closed caption group name */
162 char *instreamid; /* closed captions INSTREAM-ID */
163 char *language; /* closed captions langauge */
164 } ClosedCaptionsStream;
166 typedef struct HLSContext {
167 const AVClass *class; // Class for private options.
168 int64_t start_sequence;
169 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
171 float time; // Set by a private option.
172 float init_time; // Set by a private option.
173 int max_nb_segments; // Set by a private option.
175 int wrap; // Set by a private option.
177 uint32_t flags; // enum HLSFlags
178 uint32_t pl_type; // enum PlaylistType
179 char *segment_filename;
180 char *fmp4_init_filename;
183 int use_localtime; ///< flag to expand filename with localtime
184 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
186 int64_t recording_time;
187 int64_t max_seg_size; // every segment file max size
190 char *format_options_str;
191 char *vtt_format_options_str;
192 char *subtitle_filename;
193 AVDictionary *format_options;
203 char key_file[LINE_BUFFER_SIZE + 1];
204 char key_uri[LINE_BUFFER_SIZE + 1];
205 char key_string[KEYSIZE*2 + 1];
206 char iv_string[KEYSIZE*2 + 1];
207 AVDictionary *vtt_format_options;
212 VariantStream *var_streams;
213 unsigned int nb_varstreams;
214 ClosedCaptionsStream *cc_streams;
215 unsigned int nb_ccstreams;
217 int master_m3u8_created; /* status of master play-list creation */
218 char *master_m3u8_url; /* URL of the master m3u8 file */
219 int version; /* HLS version */
220 char *var_stream_map; /* user specified variant stream map string */
221 char *cc_stream_map; /* user specified closed caption streams map string */
222 char *master_pl_name;
223 unsigned int master_publish_rate;
225 AVIOContext *m3u8_out;
226 AVIOContext *sub_m3u8_out;
230 static int mkdir_p(const char *path) {
232 char *temp = av_strdup(path);
236 if (!path || !temp) {
240 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
242 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
246 for ( ; *pos != '\0'; ++pos) {
247 if (*pos == '/' || *pos == '\\') {
250 ret = mkdir(temp, 0755);
255 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
256 ret = mkdir(temp, 0755);
263 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
264 AVDictionary **options) {
265 HLSContext *hls = s->priv_data;
266 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
267 int err = AVERROR_MUXER_NOT_FOUND;
268 if (!*pb || !http_base_proto || !hls->http_persistent) {
269 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
270 #if CONFIG_HTTP_PROTOCOL
272 URLContext *http_url_context = ffio_geturlcontext(*pb);
273 av_assert0(http_url_context);
274 err = ff_http_do_new_request(http_url_context, filename);
280 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
281 HLSContext *hls = s->priv_data;
282 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
283 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
284 ff_format_io_close(s, pb);
285 #if CONFIG_HTTP_PROTOCOL
287 URLContext *http_url_context = ffio_geturlcontext(*pb);
288 av_assert0(http_url_context);
290 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
295 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
297 int http_base_proto = ff_is_http_proto(s->url);
300 av_dict_set(options, "method", c->method, 0);
301 } else if (http_base_proto) {
302 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
303 av_dict_set(options, "method", "PUT", 0);
306 av_dict_set(options, "user_agent", c->user_agent, 0);
307 if (c->http_persistent)
308 av_dict_set_int(options, "multiple_requests", 1, 0);
310 av_dict_set_int(options, "timeout", c->timeout, 0);
313 static void write_codec_attr(AVStream *st, VariantStream *vs) {
314 int codec_strlen = strlen(vs->codec_attr);
317 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
319 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
322 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
323 uint8_t *data = st->codecpar->extradata;
324 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
325 snprintf(attr, sizeof(attr),
326 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
330 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
331 snprintf(attr, sizeof(attr), "mp4a.40.33");
332 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
333 snprintf(attr, sizeof(attr), "mp4a.40.34");
334 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
335 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
336 snprintf(attr, sizeof(attr), "mp4a.40.2");
337 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
338 snprintf(attr, sizeof(attr), "ac-3");
339 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
340 snprintf(attr, sizeof(attr), "ec-3");
344 // Don't write the same attribute multiple times
345 if (!av_stristr(vs->codec_attr, attr)) {
346 snprintf(vs->codec_attr + codec_strlen,
347 sizeof(vs->codec_attr) - codec_strlen,
348 "%s%s", codec_strlen ? "," : "", attr);
353 vs->codec_attr[0] = '\0';
354 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
358 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
363 int nd, addchar_count;
367 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
374 if (c == '%' && *(p+1) == '%') // %%
376 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
379 while (av_isdigit(*(p + addchar_count))) {
380 nd = nd * 10 + *(p + addchar_count) - '0';
384 if (*(p + addchar_count) == placeholder) {
385 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
386 p += (addchar_count + 1);
394 av_bprint_append_data(&buf, p, addchar_count);
397 if (!av_bprint_is_complete(&buf)) {
398 av_bprint_finalize(&buf, NULL);
401 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
407 static void write_styp(AVIOContext *pb)
410 ffio_wfourcc(pb, "styp");
411 ffio_wfourcc(pb, "msdh");
412 avio_wb32(pb, 0); /* minor */
413 ffio_wfourcc(pb, "msdh");
414 ffio_wfourcc(pb, "msix");
417 static int flush_dynbuf(VariantStream *vs, int *range_length)
419 AVFormatContext *ctx = vs->avf;
423 return AVERROR(EINVAL);
427 av_write_frame(ctx, NULL);
431 *range_length = avio_close_dyn_buf(ctx->pb, &buffer);
433 avio_write(vs->out, buffer, *range_length);
437 return avio_open_dyn_buf(&ctx->pb);
440 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
443 HLSSegment *segment, *previous_segment = NULL;
444 float playlist_duration = 0.0f;
445 int ret = 0, path_size, sub_path_size;
446 char *dirname = NULL, *p, *sub_path;
448 AVDictionary *options = NULL;
449 AVIOContext *out = NULL;
450 const char *proto = NULL;
452 segment = vs->segments;
454 playlist_duration += segment->duration;
455 segment = segment->next;
458 segment = vs->old_segments;
460 playlist_duration -= segment->duration;
461 previous_segment = segment;
462 segment = previous_segment->next;
463 if (playlist_duration <= -previous_segment->duration) {
464 previous_segment->next = NULL;
469 if (segment && !hls->use_localtime_mkdir) {
470 if (hls->segment_filename) {
471 dirname = av_strdup(hls->segment_filename);
473 dirname = av_strdup(vs->avf->url);
476 ret = AVERROR(ENOMEM);
479 p = (char *)av_basename(dirname);
484 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
486 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
487 path = av_malloc(path_size);
489 ret = AVERROR(ENOMEM);
493 if (hls->use_localtime_mkdir)
494 av_strlcpy(path, segment->filename, path_size);
495 else { // segment->filename contains basename only
496 av_strlcpy(path, dirname, path_size);
497 av_strlcat(path, segment->filename, path_size);
500 proto = avio_find_protocol_name(s->url);
501 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
502 av_dict_set(&options, "method", "DELETE", 0);
503 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
505 ff_format_io_close(vs->avf, &out);
506 } else if (unlink(path) < 0) {
507 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
508 path, strerror(errno));
511 if ((segment->sub_filename[0] != '\0')) {
512 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
513 sub_path = av_malloc(sub_path_size);
515 ret = AVERROR(ENOMEM);
519 av_strlcpy(sub_path, dirname, sub_path_size);
520 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
522 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
523 av_dict_set(&options, "method", "DELETE", 0);
524 if ((ret = vs->avf->io_open(vs->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
528 ff_format_io_close(vs->avf, &out);
529 } else if (unlink(sub_path) < 0) {
530 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
531 sub_path, strerror(errno));
536 previous_segment = segment;
537 segment = previous_segment->next;
538 av_free(previous_segment);
548 static int randomize(uint8_t *buf, int len)
551 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
554 if (RAND_bytes(buf, len))
557 return AVERROR(ENOSYS);
559 return AVERROR(EINVAL);
562 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
564 HLSContext *hls = s->priv_data;
568 uint8_t key[KEYSIZE];
570 len = strlen(s->url) + 4 + 1;
571 hls->key_basename = av_mallocz(len);
572 if (!hls->key_basename)
573 return AVERROR(ENOMEM);
575 av_strlcpy(hls->key_basename, s->url, len);
576 av_strlcat(hls->key_basename, ".key", len);
579 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
580 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
582 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
583 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
586 if (!*hls->iv_string) {
587 uint8_t iv[16] = { 0 };
591 AV_WB64(iv + 8, vs->sequence);
593 memcpy(iv, hls->iv, sizeof(iv));
595 ff_data_to_hex(buf, iv, sizeof(iv), 0);
597 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
600 if (!*hls->key_uri) {
601 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
602 return AVERROR(EINVAL);
605 if (!*hls->key_file) {
606 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
607 return AVERROR(EINVAL);
610 if (!*hls->key_string) {
612 if ((ret = randomize(key, sizeof(key))) < 0) {
613 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
617 memcpy(key, hls->key, sizeof(key));
620 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
621 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
623 avio_seek(pb, 0, SEEK_CUR);
624 avio_write(pb, key, KEYSIZE);
631 static int hls_encryption_start(AVFormatContext *s)
633 HLSContext *hls = s->priv_data;
636 uint8_t key[KEYSIZE];
638 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
639 av_log(hls, AV_LOG_ERROR,
640 "error opening key info file %s\n", hls->key_info_file);
644 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
645 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
647 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
648 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
650 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
651 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
653 ff_format_io_close(s, &pb);
655 if (!*hls->key_uri) {
656 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
657 return AVERROR(EINVAL);
660 if (!*hls->key_file) {
661 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
662 return AVERROR(EINVAL);
665 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
666 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
670 ret = avio_read(pb, key, sizeof(key));
671 ff_format_io_close(s, &pb);
672 if (ret != sizeof(key)) {
673 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
674 if (ret >= 0 || ret == AVERROR_EOF)
675 ret = AVERROR(EINVAL);
678 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
683 static int read_chomp_line(AVIOContext *s, char *buf, int maxlen)
685 int len = ff_get_line(s, buf, maxlen);
686 while (len > 0 && av_isspace(buf[len - 1]))
691 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
693 AVDictionary *options = NULL;
694 HLSContext *hls = s->priv_data;
696 AVFormatContext *vtt_oc = NULL;
697 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
700 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
705 oc->url = av_strdup("");
707 return AVERROR(ENOMEM);
709 oc->oformat = vs->oformat;
710 oc->interrupt_callback = s->interrupt_callback;
711 oc->max_delay = s->max_delay;
712 oc->opaque = s->opaque;
713 oc->io_open = s->io_open;
714 oc->io_close = s->io_close;
715 av_dict_copy(&oc->metadata, s->metadata, 0);
717 if(vs->vtt_oformat) {
718 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
721 vtt_oc = vs->vtt_avf;
722 vtt_oc->oformat = vs->vtt_oformat;
723 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
726 for (i = 0; i < vs->nb_streams; i++) {
728 AVFormatContext *loc;
729 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
734 if (!(st = avformat_new_stream(loc, NULL)))
735 return AVERROR(ENOMEM);
736 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
737 if (!oc->oformat->codec_tag ||
738 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
739 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
740 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
742 st->codecpar->codec_tag = 0;
745 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
746 st->time_base = vs->streams[i]->time_base;
747 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
750 vs->packets_written = 1;
753 vs->fmp4_init_mode = 0;
755 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
756 if (hls->max_seg_size > 0) {
757 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
758 return AVERROR_PATCHWELCOME;
761 vs->packets_written = 0;
762 vs->init_range_length = 0;
763 vs->fmp4_init_mode = !byterange_mode;
764 set_http_options(s, &options, hls);
765 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
768 if (byterange_mode) {
769 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
771 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
773 av_dict_free(&options);
775 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
779 if (hls->format_options_str) {
780 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
782 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
783 hls->format_options_str);
788 av_dict_copy(&options, hls->format_options, 0);
789 av_dict_set(&options, "fflags", "-autobsf", 0);
790 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
791 ret = avformat_init_output(oc, &options);
794 if (av_dict_count(options)) {
795 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
796 av_dict_free(&options);
797 return AVERROR(EINVAL);
800 av_dict_free(&options);
805 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
808 if (!av_strcasecmp(segment->filename,filename))
810 segment = segment->next;
812 return (HLSSegment *) NULL;
815 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
816 VariantStream *vs, HLSSegment *en,
817 double duration, int64_t pos, int64_t size)
819 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
820 strlen(vs->current_segment_final_filename_fmt)) {
821 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
824 return AVERROR(ENOMEM);
826 ff_format_set_url(vs->avf, new_url);
827 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
828 char *filename = NULL;
829 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
830 av_log(hls, AV_LOG_ERROR,
831 "Invalid second level segment filename template '%s', "
832 "you can try to remove second_level_segment_size flag\n",
836 return AVERROR(EINVAL);
838 ff_format_set_url(vs->avf, filename);
840 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
841 char *filename = NULL;
842 if (replace_int_data_in_filename(&filename, vs->avf->url,
843 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
844 av_log(hls, AV_LOG_ERROR,
845 "Invalid second level segment filename template '%s', "
846 "you can try to remove second_level_segment_time flag\n",
850 return AVERROR(EINVAL);
852 ff_format_set_url(vs->avf, filename);
858 static int sls_flag_check_duration_size_index(HLSContext *hls)
862 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
863 av_log(hls, AV_LOG_ERROR,
864 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
865 ret = AVERROR(EINVAL);
867 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
868 av_log(hls, AV_LOG_ERROR,
869 "second_level_segment_size hls_flag requires use_localtime to be true\n");
870 ret = AVERROR(EINVAL);
872 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
873 av_log(hls, AV_LOG_ERROR,
874 "second_level_segment_index hls_flag requires use_localtime to be true\n");
875 ret = AVERROR(EINVAL);
881 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
883 const char *proto = avio_find_protocol_name(vs->basename);
884 int segment_renaming_ok = proto && !strcmp(proto, "file");
887 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
888 av_log(hls, AV_LOG_ERROR,
889 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
890 ret = AVERROR(EINVAL);
892 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
893 av_log(hls, AV_LOG_ERROR,
894 "second_level_segment_size hls_flag works only with file protocol segment names\n");
895 ret = AVERROR(EINVAL);
901 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
902 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
903 strlen(vs->current_segment_final_filename_fmt)) {
904 ff_rename(old_filename, vs->avf->url, hls);
908 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
910 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
911 char *filename = NULL;
912 if (replace_int_data_in_filename(&filename,
914 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
916 oc->url, 'd', vs->sequence) < 1) {
918 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
919 "you can try to remove second_level_segment_index flag\n",
922 return AVERROR(EINVAL);
924 ff_format_set_url(oc, filename);
926 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
927 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
928 sizeof(vs->current_segment_final_filename_fmt));
929 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
930 char *filename = NULL;
931 if (replace_int_data_in_filename(&filename, oc->url, 's', 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_size flag\n",
936 return AVERROR(EINVAL);
938 ff_format_set_url(oc, filename);
940 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
941 char *filename = NULL;
942 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
943 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
944 "you can try to remove second_level_segment_time flag\n",
947 return AVERROR(EINVAL);
949 ff_format_set_url(oc, filename);
955 /* Create a new segment and append it to the segment list */
956 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
957 VariantStream *vs, double duration, int64_t pos,
960 HLSSegment *en = av_malloc(sizeof(*en));
961 const char *filename;
962 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
966 return AVERROR(ENOMEM);
968 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
973 filename = av_basename(vs->avf->url);
975 if (hls->use_localtime_mkdir) {
976 filename = vs->avf->url;
978 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
979 && !byterange_mode) {
980 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
982 av_strlcpy(en->filename, filename, sizeof(en->filename));
985 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
987 en->sub_filename[0] = '\0';
989 en->duration = duration;
995 if (vs->discontinuity) {
997 vs->discontinuity = 0;
1000 if (hls->key_info_file || hls->encrypt) {
1001 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
1002 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1008 vs->last_segment->next = en;
1010 vs->last_segment = en;
1012 // EVENT or VOD playlists imply sliding window cannot be used
1013 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1014 hls->max_nb_segments = 0;
1016 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1018 vs->initial_prog_date_time += en->duration;
1019 vs->segments = en->next;
1020 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1022 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1024 !(hls->flags & HLS_SINGLE_FILE)) {
1026 en->next = vs->old_segments;
1027 vs->old_segments = en;
1028 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1035 if (hls->max_seg_size > 0) {
1043 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1045 HLSContext *hls = s->priv_data;
1047 int ret = 0, is_segment = 0;
1048 int64_t new_start_pos;
1053 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1054 &s->interrupt_callback, NULL,
1055 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1058 read_chomp_line(in, line, sizeof(line));
1059 if (strcmp(line, "#EXTM3U")) {
1060 ret = AVERROR_INVALIDDATA;
1064 vs->discontinuity = 0;
1065 while (!avio_feof(in)) {
1066 read_chomp_line(in, line, sizeof(line));
1067 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1068 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1069 if (tmp_sequence < vs->sequence)
1070 av_log(hls, AV_LOG_VERBOSE,
1071 "Found playlist sequence number was smaller """
1072 "than specified start sequence number: %"PRId64" < %"PRId64", "
1073 "omitting\n", tmp_sequence, hls->start_sequence);
1075 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1076 vs->sequence = tmp_sequence;
1078 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1080 vs->discontinuity = 1;
1081 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1083 vs->duration = atof(ptr);
1084 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1085 ptr = av_stristr(line, "URI=\"");
1087 ptr += strlen("URI=\"");
1088 end = av_stristr(ptr, ",");
1090 av_strlcpy(hls->key_uri, ptr, end - ptr);
1092 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1096 ptr = av_stristr(line, "IV=0x");
1098 ptr += strlen("IV=0x");
1099 end = av_stristr(ptr, ",");
1101 av_strlcpy(hls->iv_string, ptr, end - ptr);
1103 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1107 } else if (av_strstart(line, "#", NULL)) {
1109 } else if (line[0]) {
1111 char *new_file = av_strdup(line);
1113 ret = AVERROR(ENOMEM);
1116 ff_format_set_url(vs->avf, new_file);
1118 new_start_pos = avio_tell(vs->avf->pb);
1119 vs->size = new_start_pos - vs->start_pos;
1120 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1123 vs->start_pos = new_start_pos;
1133 static void hls_free_segments(HLSSegment *p)
1144 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1146 size_t len = strlen(oc->url);
1147 char *final_filename = av_strdup(oc->url);
1150 if (!final_filename)
1151 return AVERROR(ENOMEM);
1152 final_filename[len-4] = '\0';
1153 ret = ff_rename(oc->url, final_filename, s);
1154 oc->url[len-4] = '\0';
1155 av_freep(&final_filename);
1159 static int get_relative_url(const char *master_url, const char *media_url,
1160 char *rel_url, int rel_url_buf_size)
1164 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1165 strrchr(master_url, '\\');
1167 base_len = FFABS(p - master_url);
1168 if (av_strncasecmp(master_url, media_url, base_len)) {
1169 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1170 return AVERROR(EINVAL);
1173 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1177 static int create_master_playlist(AVFormatContext *s,
1178 VariantStream * const input_vs)
1180 HLSContext *hls = s->priv_data;
1181 VariantStream *vs, *temp_vs;
1182 AVStream *vid_st, *aud_st;
1183 AVDictionary *options = NULL;
1185 int m3u8_name_size, ret, bandwidth;
1186 char *m3u8_rel_name, *ccgroup;
1187 ClosedCaptionsStream *ccs;
1189 input_vs->m3u8_created = 1;
1190 if (!hls->master_m3u8_created) {
1191 /* For the first time, wait until all the media playlists are created */
1192 for (i = 0; i < hls->nb_varstreams; i++)
1193 if (!hls->var_streams[i].m3u8_created)
1196 /* Keep publishing the master playlist at the configured rate */
1197 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1198 input_vs->number % hls->master_publish_rate)
1202 set_http_options(s, &options, hls);
1204 ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
1205 av_dict_free(&options);
1207 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1208 hls->master_m3u8_url);
1212 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1214 for (i = 0; i < hls->nb_ccstreams; i++) {
1215 ccs = &(hls->cc_streams[i]);
1216 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1217 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1218 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1220 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1221 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1224 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1225 for (i = 0; i < hls->nb_varstreams; i++) {
1226 vs = &(hls->var_streams[i]);
1228 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1231 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1232 m3u8_rel_name = av_malloc(m3u8_name_size);
1233 if (!m3u8_rel_name) {
1234 ret = AVERROR(ENOMEM);
1237 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1238 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1239 m3u8_rel_name, m3u8_name_size);
1241 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1245 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, 0, 1);
1247 av_freep(&m3u8_rel_name);
1250 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1251 for (i = 0; i < hls->nb_varstreams; i++) {
1252 vs = &(hls->var_streams[i]);
1254 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1255 m3u8_rel_name = av_malloc(m3u8_name_size);
1256 if (!m3u8_rel_name) {
1257 ret = AVERROR(ENOMEM);
1260 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1261 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1262 m3u8_rel_name, m3u8_name_size);
1264 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1270 for (j = 0; j < vs->nb_streams; j++) {
1271 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1272 vid_st = vs->streams[j];
1273 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1274 aud_st = vs->streams[j];
1277 if (!vid_st && !aud_st) {
1278 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1283 * Traverse through the list of audio only rendition streams and find
1284 * the rendition which has highest bitrate in the same audio group
1287 for (j = 0; j < hls->nb_varstreams; j++) {
1288 temp_vs = &(hls->var_streams[j]);
1289 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1291 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1293 aud_st = temp_vs->streams[0];
1294 if (temp_vs->streams[0]->codecpar->bit_rate >
1295 aud_st->codecpar->bit_rate)
1296 aud_st = temp_vs->streams[0];
1303 bandwidth += vid_st->codecpar->bit_rate;
1305 bandwidth += aud_st->codecpar->bit_rate;
1306 bandwidth += bandwidth / 10;
1309 if (vid_st && vs->ccgroup) {
1310 /* check if this group name is available in the cc map string */
1311 for (j = 0; j < hls->nb_ccstreams; j++) {
1312 ccs = &(hls->cc_streams[j]);
1313 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1314 ccgroup = vs->ccgroup;
1318 if (j == hls->nb_ccstreams)
1319 av_log(NULL, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1323 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1324 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1326 av_freep(&m3u8_rel_name);
1330 hls->master_m3u8_created = 1;
1331 av_freep(&m3u8_rel_name);
1332 hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
1336 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1338 HLSContext *hls = s->priv_data;
1340 int target_duration = 0;
1342 char temp_filename[1024];
1343 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1344 const char *proto = avio_find_protocol_name(s->url);
1345 int use_rename = proto && !strcmp(proto, "file");
1346 static unsigned warned_non_file;
1347 char *key_uri = NULL;
1348 char *iv_string = NULL;
1349 AVDictionary *options = NULL;
1350 double prog_date_time = vs->initial_prog_date_time;
1351 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1352 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1355 if (byterange_mode) {
1360 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1364 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1368 if (!use_rename && !warned_non_file++)
1369 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1371 set_http_options(s, &options, hls);
1372 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", vs->m3u8_name);
1373 if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0)
1376 for (en = vs->segments; en; en = en->next) {
1377 if (target_duration <= en->duration)
1378 target_duration = lrint(en->duration);
1381 vs->discontinuity_set = 0;
1382 ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
1383 target_duration, sequence, hls->pl_type);
1385 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1386 avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
1387 vs->discontinuity_set = 1;
1389 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1390 avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1392 for (en = vs->segments; en; en = en->next) {
1393 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1394 av_strcasecmp(en->iv_string, iv_string))) {
1395 avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1397 avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
1398 avio_printf(hls->m3u8_out, "\n");
1399 key_uri = en->key_uri;
1400 iv_string = en->iv_string;
1403 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1404 ff_hls_write_init_file(hls->m3u8_out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1405 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1408 ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
1409 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1410 en->size, en->pos, vs->baseurl,
1411 en->filename, prog_date_time_p);
1413 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1417 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1418 ff_hls_write_end_list(hls->m3u8_out);
1420 if( vs->vtt_m3u8_name ) {
1421 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0)
1423 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1424 target_duration, sequence, PLAYLIST_TYPE_NONE);
1425 for (en = vs->segments; en; en = en->next) {
1426 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1427 en->duration, 0, en->size, en->pos,
1428 vs->baseurl, en->sub_filename, NULL);
1430 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1435 ff_hls_write_end_list(hls->sub_m3u8_out);
1440 av_dict_free(&options);
1441 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1442 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1443 if (ret >= 0 && use_rename)
1444 ff_rename(temp_filename, vs->m3u8_name, s);
1446 if (ret >= 0 && hls->master_pl_name)
1447 if (create_master_playlist(s, vs) < 0)
1448 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1453 static int hls_start(AVFormatContext *s, VariantStream *vs)
1455 HLSContext *c = s->priv_data;
1456 AVFormatContext *oc = vs->avf;
1457 AVFormatContext *vtt_oc = vs->vtt_avf;
1458 AVDictionary *options = NULL;
1459 char *filename, iv_string[KEYSIZE*2 + 1];
1462 if (c->flags & HLS_SINGLE_FILE) {
1463 char *new_name = av_strdup(vs->basename);
1465 return AVERROR(ENOMEM);
1466 ff_format_set_url(oc, new_name);
1467 if (vs->vtt_basename) {
1468 new_name = av_strdup(vs->vtt_basename);
1470 return AVERROR(ENOMEM);
1471 ff_format_set_url(vtt_oc, new_name);
1473 } else if (c->max_seg_size > 0) {
1474 char *filename = NULL;
1475 if (replace_int_data_in_filename(&filename,
1477 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1479 vs->basename, 'd', vs->sequence) < 1) {
1482 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", vs->basename);
1483 return AVERROR(EINVAL);
1485 ff_format_set_url(oc, filename);
1487 if (c->use_localtime) {
1489 struct tm *tm, tmpbuf;
1490 int bufsize = strlen(vs->basename) + 1024;
1491 char *buf = av_mallocz(bufsize);
1493 return AVERROR(ENOMEM);
1495 tm = localtime_r(&now0, &tmpbuf);
1496 ff_format_set_url(oc, buf);
1497 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1498 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
1499 return AVERROR(EINVAL);
1502 err = sls_flag_use_localtime_filename(oc, c, vs);
1504 return AVERROR(ENOMEM);
1507 if (c->use_localtime_mkdir) {
1509 char *fn_copy = av_strdup(oc->url);
1511 return AVERROR(ENOMEM);
1513 dir = av_dirname(fn_copy);
1514 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1515 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1517 return AVERROR(errno);
1522 char *filename = NULL;
1523 if (replace_int_data_in_filename(&filename,
1525 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1527 vs->basename, 'd', vs->sequence) < 1) {
1530 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", vs->basename);
1531 return AVERROR(EINVAL);
1533 ff_format_set_url(oc, filename);
1535 if( vs->vtt_basename) {
1536 char *filename = NULL;
1537 if (replace_int_data_in_filename(&filename,
1539 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1541 vs->vtt_basename, 'd', vs->sequence) < 1) {
1544 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1545 return AVERROR(EINVAL);
1547 ff_format_set_url(vtt_oc, filename);
1552 set_http_options(s, &options, c);
1554 if (c->flags & HLS_TEMP_FILE) {
1555 char *new_name = av_asprintf("%s.tmp", oc->url);
1557 return AVERROR(ENOMEM);
1558 ff_format_set_url(oc, new_name);
1561 if (c->key_info_file || c->encrypt) {
1562 if (c->key_info_file && c->encrypt) {
1563 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1564 " will use -hls_key_info_file priority\n");
1567 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1568 if (c->key_info_file) {
1569 if ((err = hls_encryption_start(s)) < 0)
1572 if ((err = do_encrypt(s, vs)) < 0)
1575 c->encrypt_started = 1;
1577 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1580 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1582 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1583 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1586 filename = av_asprintf("crypto:%s", oc->url);
1588 err = AVERROR(ENOMEM);
1591 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1593 av_dict_free(&options);
1596 } else if (c->segment_type != SEGMENT_TYPE_FMP4) {
1597 if ((err = hlsenc_io_open(s, &oc->pb, oc->url, &options)) < 0)
1600 if (vs->vtt_basename) {
1601 set_http_options(s, &options, c);
1602 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0)
1605 av_dict_free(&options);
1607 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1608 /* We only require one PAT/PMT per segment. */
1609 if (oc->oformat->priv_class && oc->priv_data) {
1612 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1614 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1615 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1616 av_opt_set(oc->priv_data, "pat_period", period, 0);
1620 if (vs->vtt_basename) {
1621 err = avformat_write_header(vtt_oc,NULL);
1628 av_dict_free(&options);
1633 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1636 time_t t = time(NULL);
1637 struct tm *p, tmbuf;
1638 HLSContext *hls = s->priv_data;
1640 p = localtime_r(&t, &tmbuf);
1641 // no %s support when strftime returned error or left format string unchanged
1642 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1643 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1644 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1646 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1649 static int append_postfix(char *name, int name_buf_len, int i)
1652 char extension[10] = {'\0'};
1654 p = strrchr(name, '.');
1656 av_strlcpy(extension, p, sizeof(extension));
1660 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1662 if (strlen(extension))
1663 av_strlcat(name, extension, name_buf_len);
1668 static int validate_name(int nb_vs, const char *fn)
1670 const char *filename, *subdir_name;
1671 char *fn_dup = NULL;
1675 ret = AVERROR(EINVAL);
1679 fn_dup = av_strdup(fn);
1681 ret = AVERROR(ENOMEM);
1685 filename = av_basename(fn);
1686 subdir_name = av_dirname(fn_dup);
1688 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1689 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n",
1691 ret = AVERROR(EINVAL);
1695 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1696 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n",
1698 ret = AVERROR(EINVAL);
1707 static int format_name(char *buf, int buf_len, int index)
1709 const char *proto, *dir;
1710 char *orig_buf_dup = NULL, *mod_buf = NULL, *mod_buf_dup = NULL;
1713 if (!av_stristr(buf, "%v"))
1716 orig_buf_dup = av_strdup(buf);
1717 if (!orig_buf_dup) {
1718 ret = AVERROR(ENOMEM);
1722 if (replace_int_data_in_filename(&mod_buf, orig_buf_dup, 'v', index) < 1) {
1723 ret = AVERROR(EINVAL);
1726 av_strlcpy(buf, mod_buf, buf_len);
1728 proto = avio_find_protocol_name(orig_buf_dup);
1729 dir = av_dirname(orig_buf_dup);
1731 /* if %v is present in the file's directory, create sub-directory */
1732 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1733 mod_buf_dup = av_strdup(buf);
1735 ret = AVERROR(ENOMEM);
1739 dir = av_dirname(mod_buf_dup);
1740 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1741 ret = AVERROR(errno);
1747 av_freep(&orig_buf_dup);
1748 av_freep(&mod_buf_dup);
1753 static int get_nth_codec_stream_index(AVFormatContext *s,
1754 enum AVMediaType codec_type,
1757 unsigned int stream_index, cnt;
1758 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1761 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1762 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1764 if (cnt == stream_id)
1765 return stream_index;
1771 static int parse_variant_stream_mapstring(AVFormatContext *s)
1773 HLSContext *hls = s->priv_data;
1776 enum AVMediaType codec_type;
1777 int nb_varstreams, nb_streams;
1778 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1782 * Expected format for var_stream_map string is as below:
1784 * "a:0,agroup:a0 a:1,agroup:a1 v:0,agroup:a0 v:1,agroup:a1"
1785 * This string specifies how to group the audio, video and subtitle streams
1786 * into different variant streams. The variant stream groups are separated
1789 * a:, v:, s: are keys to specify audio, video and subtitle streams
1790 * respectively. Allowed values are 0 to 9 digits (limited just based on
1793 * agroup: is key to specify audio group. A string can be given as value.
1795 p = av_strdup(hls->var_stream_map);
1797 while(av_strtok(q, " \t", &saveptr1)) {
1799 hls->nb_varstreams++;
1803 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1804 if (!hls->var_streams)
1805 return AVERROR(ENOMEM);
1807 p = hls->var_stream_map;
1809 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1812 if (nb_varstreams < hls->nb_varstreams)
1813 vs = &(hls->var_streams[nb_varstreams++]);
1815 return AVERROR(EINVAL);
1818 while (q < varstr + strlen(varstr)) {
1819 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1820 !av_strncasecmp(q, "s:", 2))
1824 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1826 return AVERROR(ENOMEM);
1829 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1832 if (av_strstart(keyval, "agroup:", &val)) {
1833 vs->agroup = av_strdup(val);
1835 return AVERROR(ENOMEM);
1837 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1838 vs->ccgroup = av_strdup(val);
1840 return AVERROR(ENOMEM);
1842 } else if (av_strstart(keyval, "v:", &val)) {
1843 codec_type = AVMEDIA_TYPE_VIDEO;
1844 } else if (av_strstart(keyval, "a:", &val)) {
1845 codec_type = AVMEDIA_TYPE_AUDIO;
1846 } else if (av_strstart(keyval, "s:", &val)) {
1847 codec_type = AVMEDIA_TYPE_SUBTITLE;
1849 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1850 return AVERROR(EINVAL);
1854 if (av_isdigit(*val))
1855 stream_index = get_nth_codec_stream_index (s, codec_type,
1858 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1859 vs->streams[nb_streams++] = s->streams[stream_index];
1861 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1862 return AVERROR(EINVAL);
1866 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1867 hls->nb_varstreams);
1872 static int parse_cc_stream_mapstring(AVFormatContext *s)
1874 HLSContext *hls = s->priv_data;
1876 char *p, *q, *saveptr1, *saveptr2, *ccstr, *keyval;
1878 ClosedCaptionsStream *ccs;
1880 p = av_strdup(hls->cc_stream_map);
1882 while(av_strtok(q, " \t", &saveptr1)) {
1884 hls->nb_ccstreams++;
1888 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams);
1889 if (!hls->cc_streams)
1890 return AVERROR(ENOMEM);
1892 p = hls->cc_stream_map;
1894 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
1897 if (nb_ccstreams < hls->nb_ccstreams)
1898 ccs = &(hls->cc_streams[nb_ccstreams++]);
1900 return AVERROR(EINVAL);
1902 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
1905 if (av_strstart(keyval, "ccgroup:", &val)) {
1906 ccs->ccgroup = av_strdup(val);
1908 return AVERROR(ENOMEM);
1909 } else if (av_strstart(keyval, "instreamid:", &val)) {
1910 ccs->instreamid = av_strdup(val);
1911 if (!ccs->instreamid)
1912 return AVERROR(ENOMEM);
1913 } else if (av_strstart(keyval, "language:", &val)) {
1914 ccs->language = av_strdup(val);
1916 return AVERROR(ENOMEM);
1918 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1919 return AVERROR(EINVAL);
1923 if (!ccs->ccgroup || !ccs->instreamid) {
1924 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
1925 return AVERROR(EINVAL);
1928 if (av_strstart(ccs->instreamid, "CC", &val)) {
1929 if(atoi(val) < 1 || atoi(val) > 4) {
1930 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
1931 atoi(val), ccs->instreamid);
1932 return AVERROR(EINVAL);
1934 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
1935 if(atoi(val) < 1 || atoi(val) > 63) {
1936 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
1937 atoi(val), ccs->instreamid);
1938 return AVERROR(EINVAL);
1941 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n",
1943 return AVERROR(EINVAL);
1950 static int update_variant_stream_info(AVFormatContext *s) {
1951 HLSContext *hls = s->priv_data;
1955 if (hls->cc_stream_map) {
1956 ret = parse_cc_stream_mapstring(s);
1961 if (hls->var_stream_map) {
1962 return parse_variant_stream_mapstring(s);
1964 //By default, a single variant stream with all the codec streams is created
1965 hls->nb_varstreams = 1;
1966 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
1967 hls->nb_varstreams);
1968 if (!hls->var_streams)
1969 return AVERROR(ENOMEM);
1971 hls->var_streams[0].nb_streams = s->nb_streams;
1972 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
1973 hls->var_streams[0].nb_streams);
1974 if (!hls->var_streams[0].streams)
1975 return AVERROR(ENOMEM);
1977 //by default, the first available ccgroup is mapped to the variant stream
1978 if (hls->nb_ccstreams) {
1979 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
1980 if (!hls->var_streams[0].ccgroup)
1981 return AVERROR(ENOMEM);
1984 for (i = 0; i < s->nb_streams; i++)
1985 hls->var_streams[0].streams[i] = s->streams[i];
1990 static int update_master_pl_info(AVFormatContext *s) {
1991 HLSContext *hls = s->priv_data;
1993 char *fn1= NULL, *fn2 = NULL;
1996 fn1 = av_strdup(s->url);
1998 ret = AVERROR(ENOMEM);
2002 dir = av_dirname(fn1);
2005 * if output file's directory has %v, variants are created in sub-directories
2006 * then master is created at the sub-directories level
2008 if (dir && av_stristr(av_basename(dir), "%v")) {
2009 fn2 = av_strdup(dir);
2011 ret = AVERROR(ENOMEM);
2014 dir = av_dirname(fn2);
2017 if (dir && strcmp(dir, "."))
2018 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2020 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2022 if (!hls->master_m3u8_url) {
2023 ret = AVERROR(ENOMEM);
2034 static int hls_write_header(AVFormatContext *s)
2036 HLSContext *hls = s->priv_data;
2038 AVDictionary *options = NULL;
2039 VariantStream *vs = NULL;
2041 for (i = 0; i < hls->nb_varstreams; i++) {
2042 vs = &hls->var_streams[i];
2044 av_dict_copy(&options, hls->format_options, 0);
2045 ret = avformat_write_header(vs->avf, &options);
2046 if (av_dict_count(options)) {
2047 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
2048 ret = AVERROR(EINVAL);
2049 av_dict_free(&options);
2052 av_dict_free(&options);
2053 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2054 for (j = 0; j < vs->nb_streams; j++) {
2056 AVStream *outer_st = vs->streams[j];
2058 if (hls->max_seg_size > 0) {
2059 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2060 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2061 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2062 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2063 outer_st->codecpar->bit_rate, hls->max_seg_size);
2067 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2068 inner_st = vs->avf->streams[j];
2069 else if (vs->vtt_avf)
2070 inner_st = vs->vtt_avf->streams[0];
2072 /* We have a subtitle stream, when the user does not want one */
2076 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2077 write_codec_attr(outer_st, vs);
2080 /* Update the Codec Attr string for the mapped audio groups */
2081 if (vs->has_video && vs->agroup) {
2082 for (j = 0; j < hls->nb_varstreams; j++) {
2083 VariantStream *vs_agroup = &(hls->var_streams[j]);
2084 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2085 vs_agroup->agroup &&
2086 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2087 write_codec_attr(vs_agroup->streams[0], vs);
2097 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2099 HLSContext *hls = s->priv_data;
2100 AVFormatContext *oc = NULL;
2101 AVStream *st = s->streams[pkt->stream_index];
2102 int64_t end_pts = 0;
2104 int ret = 0, can_split = 1, i, j;
2105 int stream_index = 0;
2106 int range_length = 0;
2107 uint8_t *buffer = NULL;
2108 VariantStream *vs = NULL;
2110 for (i = 0; i < hls->nb_varstreams; i++) {
2111 vs = &hls->var_streams[i];
2112 for (j = 0; j < vs->nb_streams; j++) {
2113 if (vs->streams[j] == st) {
2114 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2130 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2131 return AVERROR(ENOMEM);
2134 end_pts = hls->recording_time * vs->number;
2136 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2137 /* reset end_pts, hls->recording_time at end of the init hls list */
2138 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2139 int after_init_list_dur = (vs->sequence - vs->nb_entries ) * hls->time * AV_TIME_BASE;
2140 hls->recording_time = hls->time * AV_TIME_BASE;
2141 end_pts = init_list_dur + after_init_list_dur ;
2144 if (vs->start_pts == AV_NOPTS_VALUE) {
2145 vs->start_pts = pkt->pts;
2148 if (vs->has_video) {
2149 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2150 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2151 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2153 if (pkt->pts == AV_NOPTS_VALUE)
2154 is_ref_pkt = can_split = 0;
2157 if (vs->end_pts == AV_NOPTS_VALUE)
2158 vs->end_pts = pkt->pts;
2159 if (vs->new_start) {
2161 vs->duration = (double)(pkt->pts - vs->end_pts)
2162 * st->time_base.num / st->time_base.den;
2163 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2165 if (pkt->duration) {
2166 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2168 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2169 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2175 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2176 end_pts, AV_TIME_BASE_Q) >= 0) {
2177 int64_t new_start_pos;
2178 char *old_filename = NULL;
2179 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2181 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2183 new_start_pos = avio_tell(vs->avf->pb);
2184 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2185 vs->size = new_start_pos - vs->start_pos;
2187 vs->size = new_start_pos;
2190 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2191 if (!vs->init_range_length) {
2193 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2194 avio_write(vs->out, buffer, range_length);
2195 vs->init_range_length = range_length;
2196 avio_open_dyn_buf(&oc->pb);
2197 vs->packets_written = 0;
2198 vs->start_pos = range_length;
2199 if (!byterange_mode) {
2200 ff_format_io_close(s, &vs->out);
2201 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2205 if (!byterange_mode) {
2206 hlsenc_io_close(s, &oc->pb, oc->url);
2209 if (!byterange_mode) {
2211 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2214 if ((hls->flags & HLS_TEMP_FILE) && oc->url[0]) {
2215 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2216 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4)
2217 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2218 hls_rename_temp_file(s, oc);
2221 if (vs->fmp4_init_mode) {
2225 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2226 if (hls->flags & HLS_SINGLE_FILE) {
2227 ret = flush_dynbuf(vs, &range_length);
2229 av_free(old_filename);
2232 vs->size = range_length;
2234 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2236 av_log(NULL, AV_LOG_ERROR, "Failed to open file '%s'\n",
2240 write_styp(vs->out);
2241 ret = flush_dynbuf(vs, &range_length);
2245 ff_format_io_close(s, &vs->out);
2249 old_filename = av_strdup(vs->avf->url);
2250 if (!old_filename) {
2251 return AVERROR(ENOMEM);
2254 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2255 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2256 vs->end_pts = pkt->pts;
2259 av_free(old_filename);
2264 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2265 vs->start_pos = new_start_pos;
2267 vs->start_pos += vs->size;
2270 vs->fmp4_init_mode = 0;
2271 if (hls->flags & HLS_SINGLE_FILE) {
2273 } else if (hls->max_seg_size > 0) {
2274 if (vs->start_pos >= hls->max_seg_size) {
2276 sls_flag_file_rename(hls, vs, old_filename);
2277 ret = hls_start(s, vs);
2279 /* When split segment by byte, the duration is short than hls_time,
2280 * so it is not enough one segment duration as hls_time, */
2285 sls_flag_file_rename(hls, vs, old_filename);
2286 ret = hls_start(s, vs);
2288 av_free(old_filename);
2294 if (!vs->fmp4_init_mode || byterange_mode)
2295 if ((ret = hls_window(s, 0, vs)) < 0) {
2300 vs->packets_written++;
2301 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2306 static int hls_write_trailer(struct AVFormatContext *s)
2308 HLSContext *hls = s->priv_data;
2309 AVFormatContext *oc = NULL;
2310 AVFormatContext *vtt_oc = NULL;
2311 char *old_filename = NULL;
2314 VariantStream *vs = NULL;
2316 for (i = 0; i < hls->nb_varstreams; i++) {
2317 vs = &hls->var_streams[i];
2320 vtt_oc = vs->vtt_avf;
2321 old_filename = av_strdup(vs->avf->url);
2323 if (!old_filename) {
2324 return AVERROR(ENOMEM);
2326 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2327 int range_length = 0;
2328 if (!(hls->flags & HLS_SINGLE_FILE)) {
2329 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2331 av_log(NULL, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url);
2334 write_styp(vs->out);
2336 ret = flush_dynbuf(vs, &range_length);
2340 ff_format_io_close(s, &vs->out);
2344 av_write_trailer(oc);
2346 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2347 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2349 vs->size = avio_tell(vs->avf->pb);
2351 if (hls->segment_type != SEGMENT_TYPE_FMP4)
2352 ff_format_io_close(s, &oc->pb);
2354 if ((hls->flags & HLS_TEMP_FILE) && oc->url[0]) {
2355 hls_rename_temp_file(s, oc);
2356 av_free(old_filename);
2357 old_filename = av_strdup(vs->avf->url);
2359 if (!old_filename) {
2360 return AVERROR(ENOMEM);
2364 /* after av_write_trailer, then duration + 1 duration per packet */
2365 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2368 sls_flag_file_rename(hls, vs, old_filename);
2372 av_write_trailer(vtt_oc);
2373 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2374 ff_format_io_close(s, &vtt_oc->pb);
2376 av_freep(&vs->basename);
2377 av_freep(&vs->base_output_dirname);
2378 avformat_free_context(oc);
2381 hls_window(s, 1, vs);
2383 av_freep(&vs->fmp4_init_filename);
2385 av_freep(&vs->vtt_basename);
2386 av_freep(&vs->vtt_m3u8_name);
2387 avformat_free_context(vtt_oc);
2390 hls_free_segments(vs->segments);
2391 hls_free_segments(vs->old_segments);
2392 av_free(old_filename);
2393 av_freep(&vs->m3u8_name);
2394 av_freep(&vs->streams);
2395 av_freep(&vs->agroup);
2396 av_freep(&vs->ccgroup);
2397 av_freep(&vs->baseurl);
2400 for (i = 0; i < hls->nb_ccstreams; i++) {
2401 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2402 av_freep(&ccs->ccgroup);
2403 av_freep(&ccs->instreamid);
2404 av_freep(&ccs->language);
2407 ff_format_io_close(s, &hls->m3u8_out);
2408 ff_format_io_close(s, &hls->sub_m3u8_out);
2409 av_freep(&hls->key_basename);
2410 av_freep(&hls->var_streams);
2411 av_freep(&hls->cc_streams);
2412 av_freep(&hls->master_m3u8_url);
2417 static int hls_init(AVFormatContext *s)
2422 HLSContext *hls = s->priv_data;
2423 const char *pattern = "%d.ts";
2424 VariantStream *vs = NULL;
2425 int basename_size = 0;
2426 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2427 const char *vtt_pattern = "%d.vtt";
2429 int vtt_basename_size = 0;
2430 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2432 ret = update_variant_stream_info(s);
2434 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2438 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2439 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2440 ret = AVERROR(EINVAL);
2441 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2445 ret = validate_name(hls->nb_varstreams, s->url);
2449 if (hls->segment_filename) {
2450 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2455 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2456 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2461 if (hls->subtitle_filename) {
2462 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2467 if (hls->master_pl_name) {
2468 ret = update_master_pl_info(s);
2470 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2476 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2479 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2480 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2481 time_t t = time(NULL); // we will need it in either case
2482 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2483 hls->start_sequence = (int64_t)t;
2484 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2486 struct tm *p, tmbuf;
2487 if (!(p = localtime_r(&t, &tmbuf)))
2488 return AVERROR(ENOMEM);
2489 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2490 return AVERROR(ENOMEM);
2491 hls->start_sequence = strtoll(b, NULL, 10);
2493 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2496 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2497 for (i = 0; i < hls->nb_varstreams; i++) {
2498 vs = &hls->var_streams[i];
2500 vs->m3u8_name = av_strdup(s->url);
2501 if (!vs->m3u8_name ) {
2502 ret = AVERROR(ENOMEM);
2505 ret = format_name(vs->m3u8_name, strlen(s->url) + 1, i);
2509 vs->sequence = hls->start_sequence;
2510 vs->start_pts = AV_NOPTS_VALUE;
2511 vs->end_pts = AV_NOPTS_VALUE;
2512 vs->current_segment_final_filename_fmt[0] = '\0';
2514 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2515 // Independent segments cannot be guaranteed when splitting by time
2516 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2517 av_log(s, AV_LOG_WARNING,
2518 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2519 "Disabling 'independent_segments' flag\n");
2522 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2525 vs->initial_prog_date_time = now0;
2527 if (hls->format_options_str) {
2528 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2530 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2535 for (j = 0; j < vs->nb_streams; j++) {
2536 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2537 /* Get one video stream to reference for split segments
2538 * so use the first video stream index. */
2539 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2540 vs->reference_stream_index = vs->streams[j]->index;
2542 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2545 if (vs->has_video > 1)
2546 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2547 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2548 vs->oformat = av_guess_format("mp4", NULL, NULL);
2550 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2554 ret = AVERROR_MUXER_NOT_FOUND;
2558 if (vs->has_subtitle) {
2559 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2561 ret = AVERROR_MUXER_NOT_FOUND;
2565 if (hls->segment_filename) {
2566 basename_size = strlen(hls->segment_filename) + 1;
2567 vs->basename = av_malloc(basename_size);
2568 if (!vs->basename) {
2569 ret = AVERROR(ENOMEM);
2573 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2574 ret = format_name(vs->basename, basename_size, i);
2578 if (hls->flags & HLS_SINGLE_FILE) {
2579 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2586 if (hls->use_localtime) {
2587 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2589 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2592 vs->basename = av_malloc(basename_size);
2593 if (!vs->basename) {
2594 ret = AVERROR(ENOMEM);
2598 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2600 p = strrchr(vs->basename, '.');
2603 if (hls->use_localtime) {
2604 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2606 av_strlcat(vs->basename, pattern, basename_size);
2610 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2611 if (hls->nb_varstreams > 1)
2612 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2613 if (hls->flags & HLS_SINGLE_FILE) {
2614 vs->fmp4_init_filename = av_strdup(vs->basename);
2615 if (!vs->fmp4_init_filename) {
2616 ret = AVERROR(ENOMEM);
2620 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2621 if (!vs->fmp4_init_filename ) {
2622 ret = AVERROR(ENOMEM);
2625 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2626 fmp4_init_filename_len);
2627 if (hls->nb_varstreams > 1) {
2628 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2633 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2634 strlen(vs->fmp4_init_filename) + 1;
2636 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2637 if (!vs->base_output_dirname) {
2638 ret = AVERROR(ENOMEM);
2642 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2643 fmp4_init_filename_len);
2644 p = strrchr(vs->base_output_dirname, '/');
2647 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2648 fmp4_init_filename_len);
2650 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2651 fmp4_init_filename_len);
2656 if (!hls->use_localtime) {
2657 ret = sls_flag_check_duration_size_index(hls);
2662 ret = sls_flag_check_duration_size(hls, vs);
2667 if (vs->has_subtitle) {
2669 if (hls->flags & HLS_SINGLE_FILE)
2670 vtt_pattern = ".vtt";
2671 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2673 vs->vtt_basename = av_malloc(vtt_basename_size);
2674 if (!vs->vtt_basename) {
2675 ret = AVERROR(ENOMEM);
2678 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2679 if (!vs->vtt_m3u8_name ) {
2680 ret = AVERROR(ENOMEM);
2683 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2684 p = strrchr(vs->vtt_basename, '.');
2688 if ( hls->subtitle_filename ) {
2689 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2690 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2694 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2695 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2697 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2701 vs->baseurl = av_strdup(hls->baseurl);
2703 ret = AVERROR(ENOMEM);
2708 if ((ret = hls_mux_init(s, vs)) < 0)
2711 if (hls->flags & HLS_APPEND_LIST) {
2712 parse_playlist(s, vs->m3u8_name, vs);
2713 vs->discontinuity = 1;
2714 if (hls->init_time > 0) {
2715 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2716 " hls_init_time value will have no effect\n");
2718 hls->recording_time = hls->time * AV_TIME_BASE;
2722 if ((ret = hls_start(s, vs)) < 0)
2728 av_freep(&hls->key_basename);
2729 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2730 vs = &hls->var_streams[i];
2731 av_freep(&vs->basename);
2732 av_freep(&vs->vtt_basename);
2733 av_freep(&vs->fmp4_init_filename);
2734 av_freep(&vs->m3u8_name);
2735 av_freep(&vs->vtt_m3u8_name);
2736 av_freep(&vs->streams);
2737 av_freep(&vs->agroup);
2738 av_freep(&vs->ccgroup);
2739 av_freep(&vs->baseurl);
2741 avformat_free_context(vs->avf);
2743 avformat_free_context(vs->vtt_avf);
2745 for (i = 0; i < hls->nb_ccstreams; i++) {
2746 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2747 av_freep(&ccs->ccgroup);
2748 av_freep(&ccs->instreamid);
2749 av_freep(&ccs->language);
2751 av_freep(&hls->var_streams);
2752 av_freep(&hls->cc_streams);
2753 av_freep(&hls->master_m3u8_url);
2759 #define OFFSET(x) offsetof(HLSContext, x)
2760 #define E AV_OPT_FLAG_ENCODING_PARAM
2761 static const AVOption options[] = {
2762 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2763 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2764 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2765 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2766 {"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},
2767 {"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},
2769 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2771 {"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},
2772 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2773 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2774 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2775 {"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},
2776 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2777 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2778 {"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},
2779 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2780 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2781 {"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"},
2782 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2783 {"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"},
2784 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2785 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2786 {"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"},
2787 {"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"},
2788 {"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"},
2789 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2790 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2791 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2792 {"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"},
2793 {"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"},
2794 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2795 {"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"},
2796 {"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"},
2797 {"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"},
2798 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2799 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2800 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2801 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2802 {"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" },
2803 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2804 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2805 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2806 {"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" },
2807 {"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" },
2808 {"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" },
2809 {"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" },
2810 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2811 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2812 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2813 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2814 {"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},
2815 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2816 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2820 static const AVClass hls_class = {
2821 .class_name = "hls muxer",
2822 .item_name = av_default_item_name,
2824 .version = LIBAVUTIL_VERSION_INT,
2828 AVOutputFormat ff_hls_muxer = {
2830 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2831 .extensions = "m3u8",
2832 .priv_data_size = sizeof(HLSContext),
2833 .audio_codec = AV_CODEC_ID_AAC,
2834 .video_codec = AV_CODEC_ID_H264,
2835 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2836 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH,
2838 .write_header = hls_write_header,
2839 .write_packet = hls_write_packet,
2840 .write_trailer = hls_write_trailer,
2841 .priv_class = &hls_class,