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;
153 char codec_attr[128];
154 CodecAttributeStatus attr_status;
155 unsigned int nb_streams;
156 int m3u8_created; /* status of media play-list creation */
157 char *agroup; /* audio group name */
158 char *ccgroup; /* closed caption group name */
162 typedef struct ClosedCaptionsStream {
163 char *ccgroup; /* closed caption group name */
164 char *instreamid; /* closed captions INSTREAM-ID */
165 char *language; /* closed captions langauge */
166 } ClosedCaptionsStream;
168 typedef struct HLSContext {
169 const AVClass *class; // Class for private options.
170 int64_t start_sequence;
171 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
173 float time; // Set by a private option.
174 float init_time; // Set by a private option.
175 int max_nb_segments; // Set by a private option.
176 int hls_delete_threshold; // Set by a private option.
178 int wrap; // Set by a private option.
180 uint32_t flags; // enum HLSFlags
181 uint32_t pl_type; // enum PlaylistType
182 char *segment_filename;
183 char *fmp4_init_filename;
186 int use_localtime; ///< flag to expand filename with localtime
187 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
189 int64_t recording_time;
190 int64_t max_seg_size; // every segment file max size
193 char *format_options_str;
194 char *vtt_format_options_str;
195 char *subtitle_filename;
196 AVDictionary *format_options;
206 char key_file[LINE_BUFFER_SIZE + 1];
207 char key_uri[LINE_BUFFER_SIZE + 1];
208 char key_string[KEYSIZE*2 + 1];
209 char iv_string[KEYSIZE*2 + 1];
210 AVDictionary *vtt_format_options;
215 VariantStream *var_streams;
216 unsigned int nb_varstreams;
217 ClosedCaptionsStream *cc_streams;
218 unsigned int nb_ccstreams;
220 int master_m3u8_created; /* status of master play-list creation */
221 char *master_m3u8_url; /* URL of the master m3u8 file */
222 int version; /* HLS version */
223 char *var_stream_map; /* user specified variant stream map string */
224 char *cc_stream_map; /* user specified closed caption streams map string */
225 char *master_pl_name;
226 unsigned int master_publish_rate;
228 AVIOContext *m3u8_out;
229 AVIOContext *sub_m3u8_out;
233 static int mkdir_p(const char *path) {
235 char *temp = av_strdup(path);
239 if (!path || !temp) {
243 if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) {
245 } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) {
249 for ( ; *pos != '\0'; ++pos) {
250 if (*pos == '/' || *pos == '\\') {
253 ret = mkdir(temp, 0755);
258 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
259 ret = mkdir(temp, 0755);
266 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
267 AVDictionary **options) {
268 HLSContext *hls = s->priv_data;
269 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
270 int err = AVERROR_MUXER_NOT_FOUND;
271 if (!*pb || !http_base_proto || !hls->http_persistent) {
272 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
273 #if CONFIG_HTTP_PROTOCOL
275 URLContext *http_url_context = ffio_geturlcontext(*pb);
276 av_assert0(http_url_context);
277 err = ff_http_do_new_request(http_url_context, filename);
283 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
284 HLSContext *hls = s->priv_data;
285 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
286 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
287 ff_format_io_close(s, pb);
288 #if CONFIG_HTTP_PROTOCOL
290 URLContext *http_url_context = ffio_geturlcontext(*pb);
291 av_assert0(http_url_context);
293 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
298 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
300 int http_base_proto = ff_is_http_proto(s->url);
303 av_dict_set(options, "method", c->method, 0);
304 } else if (http_base_proto) {
305 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
306 av_dict_set(options, "method", "PUT", 0);
309 av_dict_set(options, "user_agent", c->user_agent, 0);
310 if (c->http_persistent)
311 av_dict_set_int(options, "multiple_requests", 1, 0);
313 av_dict_set_int(options, "timeout", c->timeout, 0);
316 static void write_codec_attr(AVStream *st, VariantStream *vs) {
317 int codec_strlen = strlen(vs->codec_attr);
320 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
322 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
325 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
326 uint8_t *data = st->codecpar->extradata;
327 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
328 snprintf(attr, sizeof(attr),
329 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
333 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
334 snprintf(attr, sizeof(attr), "mp4a.40.33");
335 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
336 snprintf(attr, sizeof(attr), "mp4a.40.34");
337 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
338 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
339 snprintf(attr, sizeof(attr), "mp4a.40.2");
340 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
341 snprintf(attr, sizeof(attr), "ac-3");
342 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
343 snprintf(attr, sizeof(attr), "ec-3");
347 // Don't write the same attribute multiple times
348 if (!av_stristr(vs->codec_attr, attr)) {
349 snprintf(vs->codec_attr + codec_strlen,
350 sizeof(vs->codec_attr) - codec_strlen,
351 "%s%s", codec_strlen ? "," : "", attr);
356 vs->codec_attr[0] = '\0';
357 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
361 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
366 int nd, addchar_count;
370 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
377 if (c == '%' && *(p+1) == '%') // %%
379 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
382 while (av_isdigit(*(p + addchar_count))) {
383 nd = nd * 10 + *(p + addchar_count) - '0';
387 if (*(p + addchar_count) == placeholder) {
388 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
389 p += (addchar_count + 1);
397 av_bprint_append_data(&buf, p, addchar_count);
400 if (!av_bprint_is_complete(&buf)) {
401 av_bprint_finalize(&buf, NULL);
404 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
410 static void write_styp(AVIOContext *pb)
413 ffio_wfourcc(pb, "styp");
414 ffio_wfourcc(pb, "msdh");
415 avio_wb32(pb, 0); /* minor */
416 ffio_wfourcc(pb, "msdh");
417 ffio_wfourcc(pb, "msix");
420 static int flush_dynbuf(VariantStream *vs, int *range_length)
422 AVFormatContext *ctx = vs->avf;
426 return AVERROR(EINVAL);
430 av_write_frame(ctx, NULL);
434 *range_length = avio_close_dyn_buf(ctx->pb, &buffer);
436 avio_write(vs->out, buffer, *range_length);
440 return avio_open_dyn_buf(&ctx->pb);
443 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
446 HLSSegment *segment, *previous_segment = NULL;
447 float playlist_duration = 0.0f;
448 int ret = 0, path_size, sub_path_size;
450 char *dirname = NULL, *p, *sub_path;
452 AVDictionary *options = NULL;
453 AVIOContext *out = NULL;
454 const char *proto = NULL;
456 segment = vs->segments;
458 playlist_duration += segment->duration;
459 segment = segment->next;
462 segment = vs->old_segments;
465 playlist_duration -= segment->duration;
466 previous_segment = segment;
467 segment = previous_segment->next;
469 if (playlist_duration <= -previous_segment->duration) {
470 previous_segment->next = NULL;
473 if (segment_cnt >= hls->hls_delete_threshold) {
474 previous_segment->next = NULL;
479 if (segment && !hls->use_localtime_mkdir) {
480 if (hls->segment_filename) {
481 dirname = av_strdup(hls->segment_filename);
483 dirname = av_strdup(vs->avf->url);
486 ret = AVERROR(ENOMEM);
489 p = (char *)av_basename(dirname);
495 char * r_dirname = dirname;
497 /* if %v is present in the file's directory */
498 if (av_stristr(dirname, "%v")) {
500 if (replace_int_data_in_filename(&r_dirname, dirname, 'v', segment->var_stream_idx) < 1) {
501 ret = AVERROR(EINVAL);
508 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
510 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
511 path = av_malloc(path_size);
513 ret = AVERROR(ENOMEM);
517 if (hls->use_localtime_mkdir)
518 av_strlcpy(path, segment->filename, path_size);
519 else { // segment->filename contains basename only
520 av_strlcpy(path, dirname, path_size);
521 av_strlcat(path, segment->filename, path_size);
524 proto = avio_find_protocol_name(s->url);
525 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
526 av_dict_set(&options, "method", "DELETE", 0);
527 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0)
529 ff_format_io_close(vs->avf, &out);
530 } else if (unlink(path) < 0) {
531 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
532 path, strerror(errno));
535 if ((segment->sub_filename[0] != '\0')) {
536 sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0);
537 sub_path = av_malloc(sub_path_size);
539 ret = AVERROR(ENOMEM);
543 av_strlcpy(sub_path, dirname, sub_path_size);
544 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
546 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
547 av_dict_set(&options, "method", "DELETE", 0);
548 if ((ret = vs->avf->io_open(vs->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
552 ff_format_io_close(vs->avf, &out);
553 } else if (unlink(sub_path) < 0) {
554 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
555 sub_path, strerror(errno));
560 previous_segment = segment;
561 segment = previous_segment->next;
562 av_free(previous_segment);
572 static int randomize(uint8_t *buf, int len)
575 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
578 if (RAND_bytes(buf, len))
581 return AVERROR(ENOSYS);
583 return AVERROR(EINVAL);
586 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
588 HLSContext *hls = s->priv_data;
592 uint8_t key[KEYSIZE];
594 len = strlen(s->url) + 4 + 1;
595 hls->key_basename = av_mallocz(len);
596 if (!hls->key_basename)
597 return AVERROR(ENOMEM);
599 av_strlcpy(hls->key_basename, s->url, len);
600 av_strlcat(hls->key_basename, ".key", len);
603 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
604 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
606 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
607 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
610 if (!*hls->iv_string) {
611 uint8_t iv[16] = { 0 };
615 AV_WB64(iv + 8, vs->sequence);
617 memcpy(iv, hls->iv, sizeof(iv));
619 ff_data_to_hex(buf, iv, sizeof(iv), 0);
621 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
624 if (!*hls->key_uri) {
625 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
626 return AVERROR(EINVAL);
629 if (!*hls->key_file) {
630 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
631 return AVERROR(EINVAL);
634 if (!*hls->key_string) {
636 if ((ret = randomize(key, sizeof(key))) < 0) {
637 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
641 memcpy(key, hls->key, sizeof(key));
644 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
645 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
647 avio_seek(pb, 0, SEEK_CUR);
648 avio_write(pb, key, KEYSIZE);
655 static int hls_encryption_start(AVFormatContext *s)
657 HLSContext *hls = s->priv_data;
660 uint8_t key[KEYSIZE];
662 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
663 av_log(hls, AV_LOG_ERROR,
664 "error opening key info file %s\n", hls->key_info_file);
668 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
669 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
671 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
672 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
674 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
675 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
677 ff_format_io_close(s, &pb);
679 if (!*hls->key_uri) {
680 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
681 return AVERROR(EINVAL);
684 if (!*hls->key_file) {
685 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
686 return AVERROR(EINVAL);
689 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
690 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
694 ret = avio_read(pb, key, sizeof(key));
695 ff_format_io_close(s, &pb);
696 if (ret != sizeof(key)) {
697 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
698 if (ret >= 0 || ret == AVERROR_EOF)
699 ret = AVERROR(EINVAL);
702 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
707 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
709 AVDictionary *options = NULL;
710 HLSContext *hls = s->priv_data;
712 AVFormatContext *vtt_oc = NULL;
713 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
716 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
721 oc->url = av_strdup("");
723 return AVERROR(ENOMEM);
725 oc->oformat = vs->oformat;
726 oc->interrupt_callback = s->interrupt_callback;
727 oc->max_delay = s->max_delay;
728 oc->opaque = s->opaque;
729 oc->io_open = s->io_open;
730 oc->io_close = s->io_close;
731 av_dict_copy(&oc->metadata, s->metadata, 0);
733 if(vs->vtt_oformat) {
734 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
737 vtt_oc = vs->vtt_avf;
738 vtt_oc->oformat = vs->vtt_oformat;
739 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
742 for (i = 0; i < vs->nb_streams; i++) {
744 AVFormatContext *loc;
745 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
750 if (!(st = avformat_new_stream(loc, NULL)))
751 return AVERROR(ENOMEM);
752 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
753 if (!oc->oformat->codec_tag ||
754 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
755 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
756 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
758 st->codecpar->codec_tag = 0;
761 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
762 st->time_base = vs->streams[i]->time_base;
763 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
766 vs->packets_written = 1;
769 vs->fmp4_init_mode = 0;
771 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
772 if (hls->max_seg_size > 0) {
773 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
774 return AVERROR_PATCHWELCOME;
777 vs->packets_written = 0;
778 vs->init_range_length = 0;
779 vs->fmp4_init_mode = !byterange_mode;
780 set_http_options(s, &options, hls);
781 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
784 if (byterange_mode) {
785 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
787 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
789 av_dict_free(&options);
791 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
795 if (hls->format_options_str) {
796 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
798 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n",
799 hls->format_options_str);
804 av_dict_copy(&options, hls->format_options, 0);
805 av_dict_set(&options, "fflags", "-autobsf", 0);
806 av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0);
807 ret = avformat_init_output(oc, &options);
810 if (av_dict_count(options)) {
811 av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str);
812 av_dict_free(&options);
813 return AVERROR(EINVAL);
816 av_dict_free(&options);
821 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
824 if (!av_strcasecmp(segment->filename,filename))
826 segment = segment->next;
828 return (HLSSegment *) NULL;
831 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
832 VariantStream *vs, HLSSegment *en,
833 double duration, int64_t pos, int64_t size)
835 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
836 strlen(vs->current_segment_final_filename_fmt)) {
837 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
840 return AVERROR(ENOMEM);
842 ff_format_set_url(vs->avf, new_url);
843 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
844 char *filename = NULL;
845 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
846 av_log(hls, AV_LOG_ERROR,
847 "Invalid second level segment filename template '%s', "
848 "you can try to remove second_level_segment_size flag\n",
852 return AVERROR(EINVAL);
854 ff_format_set_url(vs->avf, filename);
856 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
857 char *filename = NULL;
858 if (replace_int_data_in_filename(&filename, vs->avf->url,
859 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
860 av_log(hls, AV_LOG_ERROR,
861 "Invalid second level segment filename template '%s', "
862 "you can try to remove second_level_segment_time flag\n",
866 return AVERROR(EINVAL);
868 ff_format_set_url(vs->avf, filename);
874 static int sls_flag_check_duration_size_index(HLSContext *hls)
878 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
879 av_log(hls, AV_LOG_ERROR,
880 "second_level_segment_duration hls_flag requires use_localtime to be true\n");
881 ret = AVERROR(EINVAL);
883 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
884 av_log(hls, AV_LOG_ERROR,
885 "second_level_segment_size hls_flag requires use_localtime to be true\n");
886 ret = AVERROR(EINVAL);
888 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
889 av_log(hls, AV_LOG_ERROR,
890 "second_level_segment_index hls_flag requires use_localtime to be true\n");
891 ret = AVERROR(EINVAL);
897 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
899 const char *proto = avio_find_protocol_name(vs->basename);
900 int segment_renaming_ok = proto && !strcmp(proto, "file");
903 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
904 av_log(hls, AV_LOG_ERROR,
905 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
906 ret = AVERROR(EINVAL);
908 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
909 av_log(hls, AV_LOG_ERROR,
910 "second_level_segment_size hls_flag works only with file protocol segment names\n");
911 ret = AVERROR(EINVAL);
917 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
918 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
919 strlen(vs->current_segment_final_filename_fmt)) {
920 ff_rename(old_filename, vs->avf->url, hls);
924 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
926 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
927 char *filename = NULL;
928 if (replace_int_data_in_filename(&filename,
930 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
932 oc->url, 'd', vs->sequence) < 1) {
934 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
935 "you can try to remove second_level_segment_index flag\n",
938 return AVERROR(EINVAL);
940 ff_format_set_url(oc, filename);
942 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
943 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
944 sizeof(vs->current_segment_final_filename_fmt));
945 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
946 char *filename = NULL;
947 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
948 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
949 "you can try to remove second_level_segment_size flag\n",
952 return AVERROR(EINVAL);
954 ff_format_set_url(oc, filename);
956 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
957 char *filename = NULL;
958 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
959 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
960 "you can try to remove second_level_segment_time flag\n",
963 return AVERROR(EINVAL);
965 ff_format_set_url(oc, filename);
971 /* Create a new segment and append it to the segment list */
972 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
973 VariantStream *vs, double duration, int64_t pos,
976 HLSSegment *en = av_malloc(sizeof(*en));
977 const char *filename;
978 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
982 return AVERROR(ENOMEM);
984 en->var_stream_idx = vs->var_stream_idx;
985 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
990 filename = av_basename(vs->avf->url);
992 if (hls->use_localtime_mkdir) {
993 filename = vs->avf->url;
995 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
996 && !byterange_mode) {
997 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
999 av_strlcpy(en->filename, filename, sizeof(en->filename));
1001 if(vs->has_subtitle)
1002 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1004 en->sub_filename[0] = '\0';
1006 en->duration = duration;
1012 if (vs->discontinuity) {
1014 vs->discontinuity = 0;
1017 if (hls->key_info_file || hls->encrypt) {
1018 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
1019 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1025 vs->last_segment->next = en;
1027 vs->last_segment = en;
1029 // EVENT or VOD playlists imply sliding window cannot be used
1030 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1031 hls->max_nb_segments = 0;
1033 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1035 vs->initial_prog_date_time += en->duration;
1036 vs->segments = en->next;
1037 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1039 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1041 !(hls->flags & HLS_SINGLE_FILE)) {
1043 en->next = vs->old_segments;
1044 vs->old_segments = en;
1045 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1052 if (hls->max_seg_size > 0) {
1060 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1062 HLSContext *hls = s->priv_data;
1064 int ret = 0, is_segment = 0;
1065 int64_t new_start_pos;
1070 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1071 &s->interrupt_callback, NULL,
1072 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1075 ff_get_chomp_line(in, line, sizeof(line));
1076 if (strcmp(line, "#EXTM3U")) {
1077 ret = AVERROR_INVALIDDATA;
1081 vs->discontinuity = 0;
1082 while (!avio_feof(in)) {
1083 ff_get_chomp_line(in, line, sizeof(line));
1084 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1085 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1086 if (tmp_sequence < vs->sequence)
1087 av_log(hls, AV_LOG_VERBOSE,
1088 "Found playlist sequence number was smaller """
1089 "than specified start sequence number: %"PRId64" < %"PRId64", "
1090 "omitting\n", tmp_sequence, hls->start_sequence);
1092 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1093 vs->sequence = tmp_sequence;
1095 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1097 vs->discontinuity = 1;
1098 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1100 vs->duration = atof(ptr);
1101 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1102 ptr = av_stristr(line, "URI=\"");
1104 ptr += strlen("URI=\"");
1105 end = av_stristr(ptr, ",");
1107 av_strlcpy(hls->key_uri, ptr, end - ptr);
1109 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1113 ptr = av_stristr(line, "IV=0x");
1115 ptr += strlen("IV=0x");
1116 end = av_stristr(ptr, ",");
1118 av_strlcpy(hls->iv_string, ptr, end - ptr);
1120 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1124 } else if (av_strstart(line, "#", NULL)) {
1126 } else if (line[0]) {
1128 char *new_file = av_strdup(line);
1130 ret = AVERROR(ENOMEM);
1133 ff_format_set_url(vs->avf, new_file);
1135 new_start_pos = avio_tell(vs->avf->pb);
1136 vs->size = new_start_pos - vs->start_pos;
1137 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1140 vs->start_pos = new_start_pos;
1150 static void hls_free_segments(HLSSegment *p)
1161 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1163 size_t len = strlen(oc->url);
1164 char *final_filename = av_strdup(oc->url);
1167 if (!final_filename)
1168 return AVERROR(ENOMEM);
1169 final_filename[len-4] = '\0';
1170 ret = ff_rename(oc->url, final_filename, s);
1171 oc->url[len-4] = '\0';
1172 av_freep(&final_filename);
1176 static int get_relative_url(const char *master_url, const char *media_url,
1177 char *rel_url, int rel_url_buf_size)
1181 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1182 strrchr(master_url, '\\');
1184 base_len = FFABS(p - master_url);
1185 if (av_strncasecmp(master_url, media_url, base_len)) {
1186 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1187 return AVERROR(EINVAL);
1190 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1194 static int64_t get_stream_bit_rate(AVStream *stream) {
1195 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1197 AV_PKT_DATA_CPB_PROPERTIES,
1201 if (stream->codecpar->bit_rate)
1202 return stream->codecpar->bit_rate;
1204 return props->max_bitrate;
1209 static int create_master_playlist(AVFormatContext *s,
1210 VariantStream * const input_vs)
1212 HLSContext *hls = s->priv_data;
1213 VariantStream *vs, *temp_vs;
1214 AVStream *vid_st, *aud_st;
1215 AVDictionary *options = NULL;
1217 int m3u8_name_size, ret, bandwidth;
1218 char *m3u8_rel_name, *ccgroup;
1219 ClosedCaptionsStream *ccs;
1221 input_vs->m3u8_created = 1;
1222 if (!hls->master_m3u8_created) {
1223 /* For the first time, wait until all the media playlists are created */
1224 for (i = 0; i < hls->nb_varstreams; i++)
1225 if (!hls->var_streams[i].m3u8_created)
1228 /* Keep publishing the master playlist at the configured rate */
1229 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1230 input_vs->number % hls->master_publish_rate)
1234 set_http_options(s, &options, hls);
1236 ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
1237 av_dict_free(&options);
1239 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1240 hls->master_m3u8_url);
1244 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1246 for (i = 0; i < hls->nb_ccstreams; i++) {
1247 ccs = &(hls->cc_streams[i]);
1248 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1249 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1250 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1252 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1253 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1256 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1257 for (i = 0; i < hls->nb_varstreams; i++) {
1258 vs = &(hls->var_streams[i]);
1260 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1263 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1264 m3u8_rel_name = av_malloc(m3u8_name_size);
1265 if (!m3u8_rel_name) {
1266 ret = AVERROR(ENOMEM);
1269 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1270 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1271 m3u8_rel_name, m3u8_name_size);
1273 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1277 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, 0, 1);
1279 av_freep(&m3u8_rel_name);
1282 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1283 for (i = 0; i < hls->nb_varstreams; i++) {
1284 vs = &(hls->var_streams[i]);
1286 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1287 m3u8_rel_name = av_malloc(m3u8_name_size);
1288 if (!m3u8_rel_name) {
1289 ret = AVERROR(ENOMEM);
1292 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1293 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1294 m3u8_rel_name, m3u8_name_size);
1296 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1302 for (j = 0; j < vs->nb_streams; j++) {
1303 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1304 vid_st = vs->streams[j];
1305 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1306 aud_st = vs->streams[j];
1309 if (!vid_st && !aud_st) {
1310 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1315 * Traverse through the list of audio only rendition streams and find
1316 * the rendition which has highest bitrate in the same audio group
1319 for (j = 0; j < hls->nb_varstreams; j++) {
1320 temp_vs = &(hls->var_streams[j]);
1321 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1323 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1325 aud_st = temp_vs->streams[0];
1326 if (temp_vs->streams[0]->codecpar->bit_rate >
1327 aud_st->codecpar->bit_rate)
1328 aud_st = temp_vs->streams[0];
1335 bandwidth += get_stream_bit_rate(vid_st);
1337 bandwidth += get_stream_bit_rate(aud_st);
1338 bandwidth += bandwidth / 10;
1341 if (vid_st && vs->ccgroup) {
1342 /* check if this group name is available in the cc map string */
1343 for (j = 0; j < hls->nb_ccstreams; j++) {
1344 ccs = &(hls->cc_streams[j]);
1345 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1346 ccgroup = vs->ccgroup;
1350 if (j == hls->nb_ccstreams)
1351 av_log(NULL, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1355 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1356 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1358 av_freep(&m3u8_rel_name);
1362 hls->master_m3u8_created = 1;
1363 av_freep(&m3u8_rel_name);
1364 hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
1368 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1370 HLSContext *hls = s->priv_data;
1372 int target_duration = 0;
1374 char temp_filename[1024];
1375 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1376 const char *proto = avio_find_protocol_name(s->url);
1377 int use_rename = proto && !strcmp(proto, "file");
1378 static unsigned warned_non_file;
1379 char *key_uri = NULL;
1380 char *iv_string = NULL;
1381 AVDictionary *options = NULL;
1382 double prog_date_time = vs->initial_prog_date_time;
1383 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1384 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1387 if (byterange_mode) {
1392 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1396 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1400 if (!use_rename && !warned_non_file++)
1401 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1403 set_http_options(s, &options, hls);
1404 snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", vs->m3u8_name);
1405 if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0)
1408 for (en = vs->segments; en; en = en->next) {
1409 if (target_duration <= en->duration)
1410 target_duration = lrint(en->duration);
1413 vs->discontinuity_set = 0;
1414 ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
1415 target_duration, sequence, hls->pl_type);
1417 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1418 avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
1419 vs->discontinuity_set = 1;
1421 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1422 avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1424 for (en = vs->segments; en; en = en->next) {
1425 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1426 av_strcasecmp(en->iv_string, iv_string))) {
1427 avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1429 avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
1430 avio_printf(hls->m3u8_out, "\n");
1431 key_uri = en->key_uri;
1432 iv_string = en->iv_string;
1435 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1436 ff_hls_write_init_file(hls->m3u8_out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1437 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1440 ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
1441 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1442 en->size, en->pos, vs->baseurl,
1443 en->filename, prog_date_time_p);
1445 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1449 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1450 ff_hls_write_end_list(hls->m3u8_out);
1452 if( vs->vtt_m3u8_name ) {
1453 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0)
1455 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1456 target_duration, sequence, PLAYLIST_TYPE_NONE);
1457 for (en = vs->segments; en; en = en->next) {
1458 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1459 en->duration, 0, en->size, en->pos,
1460 vs->baseurl, en->sub_filename, NULL);
1462 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1467 ff_hls_write_end_list(hls->sub_m3u8_out);
1472 av_dict_free(&options);
1473 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1474 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1475 if (ret >= 0 && use_rename)
1476 ff_rename(temp_filename, vs->m3u8_name, s);
1478 if (ret >= 0 && hls->master_pl_name)
1479 if (create_master_playlist(s, vs) < 0)
1480 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1485 static int hls_start(AVFormatContext *s, VariantStream *vs)
1487 HLSContext *c = s->priv_data;
1488 AVFormatContext *oc = vs->avf;
1489 AVFormatContext *vtt_oc = vs->vtt_avf;
1490 AVDictionary *options = NULL;
1491 char *filename, iv_string[KEYSIZE*2 + 1];
1494 if (c->flags & HLS_SINGLE_FILE) {
1495 char *new_name = av_strdup(vs->basename);
1497 return AVERROR(ENOMEM);
1498 ff_format_set_url(oc, new_name);
1499 if (vs->vtt_basename) {
1500 new_name = av_strdup(vs->vtt_basename);
1502 return AVERROR(ENOMEM);
1503 ff_format_set_url(vtt_oc, new_name);
1505 } else if (c->max_seg_size > 0) {
1506 char *filename = NULL;
1507 if (replace_int_data_in_filename(&filename,
1509 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1511 vs->basename, 'd', vs->sequence) < 1) {
1514 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", vs->basename);
1515 return AVERROR(EINVAL);
1517 ff_format_set_url(oc, filename);
1519 if (c->use_localtime) {
1521 struct tm *tm, tmpbuf;
1522 int bufsize = strlen(vs->basename) + 1024;
1523 char *buf = av_mallocz(bufsize);
1525 return AVERROR(ENOMEM);
1527 tm = localtime_r(&now0, &tmpbuf);
1528 ff_format_set_url(oc, buf);
1529 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1530 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n");
1531 return AVERROR(EINVAL);
1534 err = sls_flag_use_localtime_filename(oc, c, vs);
1536 return AVERROR(ENOMEM);
1539 if (c->use_localtime_mkdir) {
1541 char *fn_copy = av_strdup(oc->url);
1543 return AVERROR(ENOMEM);
1545 dir = av_dirname(fn_copy);
1546 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1547 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1549 return AVERROR(errno);
1554 char *filename = NULL;
1555 if (replace_int_data_in_filename(&filename,
1557 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1559 vs->basename, 'd', vs->sequence) < 1) {
1562 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", vs->basename);
1563 return AVERROR(EINVAL);
1565 ff_format_set_url(oc, filename);
1567 if( vs->vtt_basename) {
1568 char *filename = NULL;
1569 if (replace_int_data_in_filename(&filename,
1571 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1573 vs->vtt_basename, 'd', vs->sequence) < 1) {
1576 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1577 return AVERROR(EINVAL);
1579 ff_format_set_url(vtt_oc, filename);
1584 set_http_options(s, &options, c);
1586 if (c->flags & HLS_TEMP_FILE) {
1587 char *new_name = av_asprintf("%s.tmp", oc->url);
1589 return AVERROR(ENOMEM);
1590 ff_format_set_url(oc, new_name);
1593 if (c->key_info_file || c->encrypt) {
1594 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1595 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1596 return AVERROR_PATCHWELCOME;
1599 if (c->key_info_file && c->encrypt) {
1600 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1601 " ignoring -hls_enc\n");
1604 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1605 if (c->key_info_file) {
1606 if ((err = hls_encryption_start(s)) < 0)
1609 if ((err = do_encrypt(s, vs)) < 0)
1612 c->encrypt_started = 1;
1614 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1617 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1619 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1620 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1623 filename = av_asprintf("crypto:%s", oc->url);
1625 err = AVERROR(ENOMEM);
1628 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1630 av_dict_free(&options);
1633 } else if (c->segment_type != SEGMENT_TYPE_FMP4) {
1634 if ((err = hlsenc_io_open(s, &oc->pb, oc->url, &options)) < 0)
1637 if (vs->vtt_basename) {
1638 set_http_options(s, &options, c);
1639 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0)
1642 av_dict_free(&options);
1644 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1645 /* We only require one PAT/PMT per segment. */
1646 if (oc->oformat->priv_class && oc->priv_data) {
1649 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1651 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1652 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1653 av_opt_set(oc->priv_data, "pat_period", period, 0);
1657 if (vs->vtt_basename) {
1658 err = avformat_write_header(vtt_oc,NULL);
1665 av_dict_free(&options);
1670 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1673 time_t t = time(NULL);
1674 struct tm *p, tmbuf;
1675 HLSContext *hls = s->priv_data;
1677 p = localtime_r(&t, &tmbuf);
1678 // no %s support when strftime returned error or left format string unchanged
1679 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1680 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1681 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1683 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1686 static int append_postfix(char *name, int name_buf_len, int i)
1689 char extension[10] = {'\0'};
1691 p = strrchr(name, '.');
1693 av_strlcpy(extension, p, sizeof(extension));
1697 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1699 if (strlen(extension))
1700 av_strlcat(name, extension, name_buf_len);
1705 static int validate_name(int nb_vs, const char *fn)
1707 const char *filename, *subdir_name;
1708 char *fn_dup = NULL;
1712 ret = AVERROR(EINVAL);
1716 fn_dup = av_strdup(fn);
1718 ret = AVERROR(ENOMEM);
1722 filename = av_basename(fn);
1723 subdir_name = av_dirname(fn_dup);
1725 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1726 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n",
1728 ret = AVERROR(EINVAL);
1732 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1733 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n",
1735 ret = AVERROR(EINVAL);
1744 static int format_name(char *buf, int buf_len, int index)
1746 const char *proto, *dir;
1747 char *orig_buf_dup = NULL, *mod_buf = NULL, *mod_buf_dup = NULL;
1750 if (!av_stristr(buf, "%v"))
1753 orig_buf_dup = av_strdup(buf);
1754 if (!orig_buf_dup) {
1755 ret = AVERROR(ENOMEM);
1759 if (replace_int_data_in_filename(&mod_buf, orig_buf_dup, 'v', index) < 1) {
1760 ret = AVERROR(EINVAL);
1763 av_strlcpy(buf, mod_buf, buf_len);
1765 proto = avio_find_protocol_name(orig_buf_dup);
1766 dir = av_dirname(orig_buf_dup);
1768 /* if %v is present in the file's directory, create sub-directory */
1769 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1770 mod_buf_dup = av_strdup(buf);
1772 ret = AVERROR(ENOMEM);
1776 dir = av_dirname(mod_buf_dup);
1777 if (mkdir_p(dir) == -1 && errno != EEXIST) {
1778 ret = AVERROR(errno);
1784 av_freep(&orig_buf_dup);
1785 av_freep(&mod_buf_dup);
1790 static int get_nth_codec_stream_index(AVFormatContext *s,
1791 enum AVMediaType codec_type,
1794 unsigned int stream_index, cnt;
1795 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1798 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1799 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1801 if (cnt == stream_id)
1802 return stream_index;
1808 static int parse_variant_stream_mapstring(AVFormatContext *s)
1810 HLSContext *hls = s->priv_data;
1813 enum AVMediaType codec_type;
1814 int nb_varstreams, nb_streams;
1815 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1819 * Expected format for var_stream_map string is as below:
1821 * "a:0,agroup:a0 a:1,agroup:a1 v:0,agroup:a0 v:1,agroup:a1"
1822 * This string specifies how to group the audio, video and subtitle streams
1823 * into different variant streams. The variant stream groups are separated
1826 * a:, v:, s: are keys to specify audio, video and subtitle streams
1827 * respectively. Allowed values are 0 to 9 digits (limited just based on
1830 * agroup: is key to specify audio group. A string can be given as value.
1832 p = av_strdup(hls->var_stream_map);
1834 while(av_strtok(q, " \t", &saveptr1)) {
1836 hls->nb_varstreams++;
1840 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1841 if (!hls->var_streams)
1842 return AVERROR(ENOMEM);
1844 p = hls->var_stream_map;
1846 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1849 if (nb_varstreams < hls->nb_varstreams) {
1850 vs = &(hls->var_streams[nb_varstreams]);
1851 vs->var_stream_idx = nb_varstreams;
1854 return AVERROR(EINVAL);
1857 while (q < varstr + strlen(varstr)) {
1858 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1859 !av_strncasecmp(q, "s:", 2))
1863 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1865 return AVERROR(ENOMEM);
1868 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1871 if (av_strstart(keyval, "agroup:", &val)) {
1872 vs->agroup = av_strdup(val);
1874 return AVERROR(ENOMEM);
1876 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1877 vs->ccgroup = av_strdup(val);
1879 return AVERROR(ENOMEM);
1881 } else if (av_strstart(keyval, "v:", &val)) {
1882 codec_type = AVMEDIA_TYPE_VIDEO;
1883 } else if (av_strstart(keyval, "a:", &val)) {
1884 codec_type = AVMEDIA_TYPE_AUDIO;
1885 } else if (av_strstart(keyval, "s:", &val)) {
1886 codec_type = AVMEDIA_TYPE_SUBTITLE;
1888 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1889 return AVERROR(EINVAL);
1893 if (av_isdigit(*val))
1894 stream_index = get_nth_codec_stream_index (s, codec_type,
1897 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1898 vs->streams[nb_streams++] = s->streams[stream_index];
1900 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1901 return AVERROR(EINVAL);
1905 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1906 hls->nb_varstreams);
1911 static int parse_cc_stream_mapstring(AVFormatContext *s)
1913 HLSContext *hls = s->priv_data;
1915 char *p, *q, *ccstr, *keyval;
1916 char *saveptr1 = NULL, *saveptr2 = NULL;
1918 ClosedCaptionsStream *ccs;
1920 p = av_strdup(hls->cc_stream_map);
1922 while(av_strtok(q, " \t", &saveptr1)) {
1924 hls->nb_ccstreams++;
1928 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams);
1929 if (!hls->cc_streams)
1930 return AVERROR(ENOMEM);
1932 p = hls->cc_stream_map;
1934 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
1937 if (nb_ccstreams < hls->nb_ccstreams)
1938 ccs = &(hls->cc_streams[nb_ccstreams++]);
1940 return AVERROR(EINVAL);
1942 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
1945 if (av_strstart(keyval, "ccgroup:", &val)) {
1946 ccs->ccgroup = av_strdup(val);
1948 return AVERROR(ENOMEM);
1949 } else if (av_strstart(keyval, "instreamid:", &val)) {
1950 ccs->instreamid = av_strdup(val);
1951 if (!ccs->instreamid)
1952 return AVERROR(ENOMEM);
1953 } else if (av_strstart(keyval, "language:", &val)) {
1954 ccs->language = av_strdup(val);
1956 return AVERROR(ENOMEM);
1958 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1959 return AVERROR(EINVAL);
1963 if (!ccs->ccgroup || !ccs->instreamid) {
1964 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
1965 return AVERROR(EINVAL);
1968 if (av_strstart(ccs->instreamid, "CC", &val)) {
1969 if(atoi(val) < 1 || atoi(val) > 4) {
1970 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
1971 atoi(val), ccs->instreamid);
1972 return AVERROR(EINVAL);
1974 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
1975 if(atoi(val) < 1 || atoi(val) > 63) {
1976 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
1977 atoi(val), ccs->instreamid);
1978 return AVERROR(EINVAL);
1981 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n",
1983 return AVERROR(EINVAL);
1990 static int update_variant_stream_info(AVFormatContext *s) {
1991 HLSContext *hls = s->priv_data;
1995 if (hls->cc_stream_map) {
1996 ret = parse_cc_stream_mapstring(s);
2001 if (hls->var_stream_map) {
2002 return parse_variant_stream_mapstring(s);
2004 //By default, a single variant stream with all the codec streams is created
2005 hls->nb_varstreams = 1;
2006 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
2007 hls->nb_varstreams);
2008 if (!hls->var_streams)
2009 return AVERROR(ENOMEM);
2011 hls->var_streams[0].var_stream_idx = 0;
2012 hls->var_streams[0].nb_streams = s->nb_streams;
2013 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2014 hls->var_streams[0].nb_streams);
2015 if (!hls->var_streams[0].streams)
2016 return AVERROR(ENOMEM);
2018 //by default, the first available ccgroup is mapped to the variant stream
2019 if (hls->nb_ccstreams) {
2020 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2021 if (!hls->var_streams[0].ccgroup)
2022 return AVERROR(ENOMEM);
2025 for (i = 0; i < s->nb_streams; i++)
2026 hls->var_streams[0].streams[i] = s->streams[i];
2031 static int update_master_pl_info(AVFormatContext *s) {
2032 HLSContext *hls = s->priv_data;
2034 char *fn1= NULL, *fn2 = NULL;
2037 fn1 = av_strdup(s->url);
2039 ret = AVERROR(ENOMEM);
2043 dir = av_dirname(fn1);
2046 * if output file's directory has %v, variants are created in sub-directories
2047 * then master is created at the sub-directories level
2049 if (dir && av_stristr(av_basename(dir), "%v")) {
2050 fn2 = av_strdup(dir);
2052 ret = AVERROR(ENOMEM);
2055 dir = av_dirname(fn2);
2058 if (dir && strcmp(dir, "."))
2059 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2061 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2063 if (!hls->master_m3u8_url) {
2064 ret = AVERROR(ENOMEM);
2075 static int hls_write_header(AVFormatContext *s)
2077 HLSContext *hls = s->priv_data;
2079 AVDictionary *options = NULL;
2080 VariantStream *vs = NULL;
2082 for (i = 0; i < hls->nb_varstreams; i++) {
2083 vs = &hls->var_streams[i];
2085 av_dict_copy(&options, hls->format_options, 0);
2086 ret = avformat_write_header(vs->avf, &options);
2087 if (av_dict_count(options)) {
2088 av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str);
2089 ret = AVERROR(EINVAL);
2090 av_dict_free(&options);
2093 av_dict_free(&options);
2094 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2095 for (j = 0; j < vs->nb_streams; j++) {
2097 AVStream *outer_st = vs->streams[j];
2099 if (hls->max_seg_size > 0) {
2100 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2101 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2102 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2103 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2104 outer_st->codecpar->bit_rate, hls->max_seg_size);
2108 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2109 inner_st = vs->avf->streams[j];
2110 else if (vs->vtt_avf)
2111 inner_st = vs->vtt_avf->streams[0];
2113 /* We have a subtitle stream, when the user does not want one */
2117 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2118 write_codec_attr(outer_st, vs);
2121 /* Update the Codec Attr string for the mapped audio groups */
2122 if (vs->has_video && vs->agroup) {
2123 for (j = 0; j < hls->nb_varstreams; j++) {
2124 VariantStream *vs_agroup = &(hls->var_streams[j]);
2125 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2126 vs_agroup->agroup &&
2127 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2128 write_codec_attr(vs_agroup->streams[0], vs);
2138 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2140 HLSContext *hls = s->priv_data;
2141 AVFormatContext *oc = NULL;
2142 AVStream *st = s->streams[pkt->stream_index];
2143 int64_t end_pts = 0;
2145 int ret = 0, can_split = 1, i, j;
2146 int stream_index = 0;
2147 int range_length = 0;
2148 uint8_t *buffer = NULL;
2149 VariantStream *vs = NULL;
2151 for (i = 0; i < hls->nb_varstreams; i++) {
2152 vs = &hls->var_streams[i];
2153 for (j = 0; j < vs->nb_streams; j++) {
2154 if (vs->streams[j] == st) {
2155 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2171 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2172 return AVERROR(ENOMEM);
2175 end_pts = hls->recording_time * vs->number;
2177 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2178 /* reset end_pts, hls->recording_time at end of the init hls list */
2179 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2180 int after_init_list_dur = (vs->sequence - vs->nb_entries ) * hls->time * AV_TIME_BASE;
2181 hls->recording_time = hls->time * AV_TIME_BASE;
2182 end_pts = init_list_dur + after_init_list_dur ;
2185 if (vs->start_pts == AV_NOPTS_VALUE) {
2186 vs->start_pts = pkt->pts;
2189 if (vs->has_video) {
2190 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2191 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2192 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2194 if (pkt->pts == AV_NOPTS_VALUE)
2195 is_ref_pkt = can_split = 0;
2198 if (vs->end_pts == AV_NOPTS_VALUE)
2199 vs->end_pts = pkt->pts;
2200 if (vs->new_start) {
2202 vs->duration = (double)(pkt->pts - vs->end_pts)
2203 * st->time_base.num / st->time_base.den;
2204 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2206 if (pkt->duration) {
2207 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2209 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2210 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2216 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2217 end_pts, AV_TIME_BASE_Q) >= 0) {
2218 int64_t new_start_pos;
2219 char *old_filename = NULL;
2220 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2222 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2224 new_start_pos = avio_tell(vs->avf->pb);
2225 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2226 vs->size = new_start_pos - vs->start_pos;
2228 vs->size = new_start_pos;
2231 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2232 if (!vs->init_range_length) {
2234 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2235 avio_write(vs->out, buffer, range_length);
2236 vs->init_range_length = range_length;
2237 avio_open_dyn_buf(&oc->pb);
2238 vs->packets_written = 0;
2239 vs->start_pos = range_length;
2240 if (!byterange_mode) {
2241 ff_format_io_close(s, &vs->out);
2242 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2246 if (!byterange_mode) {
2247 hlsenc_io_close(s, &oc->pb, oc->url);
2250 if (!byterange_mode) {
2252 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2255 if ((hls->flags & HLS_TEMP_FILE) && oc->url[0]) {
2256 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2257 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4)
2258 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2259 hls_rename_temp_file(s, oc);
2262 if (vs->fmp4_init_mode) {
2266 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2267 if (hls->flags & HLS_SINGLE_FILE) {
2268 ret = flush_dynbuf(vs, &range_length);
2270 av_free(old_filename);
2273 vs->size = range_length;
2275 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2277 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n",
2281 write_styp(vs->out);
2282 ret = flush_dynbuf(vs, &range_length);
2286 ff_format_io_close(s, &vs->out);
2290 old_filename = av_strdup(vs->avf->url);
2291 if (!old_filename) {
2292 return AVERROR(ENOMEM);
2295 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2296 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2297 vs->end_pts = pkt->pts;
2300 av_free(old_filename);
2305 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2306 vs->start_pos = new_start_pos;
2308 vs->start_pos += vs->size;
2311 vs->fmp4_init_mode = 0;
2312 if (hls->flags & HLS_SINGLE_FILE) {
2314 } else if (hls->max_seg_size > 0) {
2315 if (vs->start_pos >= hls->max_seg_size) {
2317 sls_flag_file_rename(hls, vs, old_filename);
2318 ret = hls_start(s, vs);
2320 /* When split segment by byte, the duration is short than hls_time,
2321 * so it is not enough one segment duration as hls_time, */
2326 sls_flag_file_rename(hls, vs, old_filename);
2327 ret = hls_start(s, vs);
2329 av_free(old_filename);
2335 if (!vs->fmp4_init_mode || byterange_mode)
2336 if ((ret = hls_window(s, 0, vs)) < 0) {
2341 vs->packets_written++;
2342 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2347 static int hls_write_trailer(struct AVFormatContext *s)
2349 HLSContext *hls = s->priv_data;
2350 AVFormatContext *oc = NULL;
2351 AVFormatContext *vtt_oc = NULL;
2352 char *old_filename = NULL;
2355 VariantStream *vs = NULL;
2357 for (i = 0; i < hls->nb_varstreams; i++) {
2358 vs = &hls->var_streams[i];
2361 vtt_oc = vs->vtt_avf;
2362 old_filename = av_strdup(vs->avf->url);
2364 if (!old_filename) {
2365 return AVERROR(ENOMEM);
2367 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2368 int range_length = 0;
2369 if (!(hls->flags & HLS_SINGLE_FILE)) {
2370 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2372 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url);
2375 write_styp(vs->out);
2377 ret = flush_dynbuf(vs, &range_length);
2381 ff_format_io_close(s, &vs->out);
2385 av_write_trailer(oc);
2387 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2388 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2390 vs->size = avio_tell(vs->avf->pb);
2392 if (hls->segment_type != SEGMENT_TYPE_FMP4)
2393 ff_format_io_close(s, &oc->pb);
2395 if ((hls->flags & HLS_TEMP_FILE) && oc->url[0]) {
2396 hls_rename_temp_file(s, oc);
2397 av_free(old_filename);
2398 old_filename = av_strdup(vs->avf->url);
2400 if (!old_filename) {
2401 return AVERROR(ENOMEM);
2405 /* after av_write_trailer, then duration + 1 duration per packet */
2406 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2409 sls_flag_file_rename(hls, vs, old_filename);
2413 av_write_trailer(vtt_oc);
2414 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2415 ff_format_io_close(s, &vtt_oc->pb);
2417 av_freep(&vs->basename);
2418 av_freep(&vs->base_output_dirname);
2419 avformat_free_context(oc);
2422 hls_window(s, 1, vs);
2424 av_freep(&vs->fmp4_init_filename);
2426 av_freep(&vs->vtt_basename);
2427 av_freep(&vs->vtt_m3u8_name);
2428 avformat_free_context(vtt_oc);
2431 hls_free_segments(vs->segments);
2432 hls_free_segments(vs->old_segments);
2433 av_free(old_filename);
2434 av_freep(&vs->m3u8_name);
2435 av_freep(&vs->streams);
2436 av_freep(&vs->agroup);
2437 av_freep(&vs->ccgroup);
2438 av_freep(&vs->baseurl);
2441 for (i = 0; i < hls->nb_ccstreams; i++) {
2442 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2443 av_freep(&ccs->ccgroup);
2444 av_freep(&ccs->instreamid);
2445 av_freep(&ccs->language);
2448 ff_format_io_close(s, &hls->m3u8_out);
2449 ff_format_io_close(s, &hls->sub_m3u8_out);
2450 av_freep(&hls->key_basename);
2451 av_freep(&hls->var_streams);
2452 av_freep(&hls->cc_streams);
2453 av_freep(&hls->master_m3u8_url);
2458 static int hls_init(AVFormatContext *s)
2463 HLSContext *hls = s->priv_data;
2464 const char *pattern = "%d.ts";
2465 VariantStream *vs = NULL;
2466 int basename_size = 0;
2467 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2468 const char *vtt_pattern = "%d.vtt";
2470 int vtt_basename_size = 0;
2471 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2473 ret = update_variant_stream_info(s);
2475 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2479 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2480 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2481 ret = AVERROR(EINVAL);
2482 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2486 ret = validate_name(hls->nb_varstreams, s->url);
2490 if (hls->segment_filename) {
2491 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2496 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2497 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2502 if (hls->subtitle_filename) {
2503 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2508 if (hls->master_pl_name) {
2509 ret = update_master_pl_info(s);
2511 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2517 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2520 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2521 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2522 time_t t = time(NULL); // we will need it in either case
2523 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2524 hls->start_sequence = (int64_t)t;
2525 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2527 struct tm *p, tmbuf;
2528 if (!(p = localtime_r(&t, &tmbuf)))
2529 return AVERROR(ENOMEM);
2530 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2531 return AVERROR(ENOMEM);
2532 hls->start_sequence = strtoll(b, NULL, 10);
2534 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2537 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2538 for (i = 0; i < hls->nb_varstreams; i++) {
2539 vs = &hls->var_streams[i];
2541 vs->m3u8_name = av_strdup(s->url);
2542 if (!vs->m3u8_name ) {
2543 ret = AVERROR(ENOMEM);
2546 ret = format_name(vs->m3u8_name, strlen(s->url) + 1, i);
2550 vs->sequence = hls->start_sequence;
2551 vs->start_pts = AV_NOPTS_VALUE;
2552 vs->end_pts = AV_NOPTS_VALUE;
2553 vs->current_segment_final_filename_fmt[0] = '\0';
2555 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2556 // Independent segments cannot be guaranteed when splitting by time
2557 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2558 av_log(s, AV_LOG_WARNING,
2559 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2560 "Disabling 'independent_segments' flag\n");
2563 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2566 vs->initial_prog_date_time = now0;
2568 if (hls->format_options_str) {
2569 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2571 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2576 for (j = 0; j < vs->nb_streams; j++) {
2577 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2578 /* Get one video stream to reference for split segments
2579 * so use the first video stream index. */
2580 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2581 vs->reference_stream_index = vs->streams[j]->index;
2583 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2586 if (vs->has_video > 1)
2587 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2588 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2589 vs->oformat = av_guess_format("mp4", NULL, NULL);
2591 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2595 ret = AVERROR_MUXER_NOT_FOUND;
2599 if (vs->has_subtitle) {
2600 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2602 ret = AVERROR_MUXER_NOT_FOUND;
2606 if (hls->segment_filename) {
2607 basename_size = strlen(hls->segment_filename) + 1;
2608 vs->basename = av_malloc(basename_size);
2609 if (!vs->basename) {
2610 ret = AVERROR(ENOMEM);
2614 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2615 ret = format_name(vs->basename, basename_size, i);
2619 if (hls->flags & HLS_SINGLE_FILE) {
2620 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2627 if (hls->use_localtime) {
2628 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2630 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2633 vs->basename = av_malloc(basename_size);
2634 if (!vs->basename) {
2635 ret = AVERROR(ENOMEM);
2639 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2641 p = strrchr(vs->basename, '.');
2644 if (hls->use_localtime) {
2645 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2647 av_strlcat(vs->basename, pattern, basename_size);
2651 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2652 if (hls->nb_varstreams > 1)
2653 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2654 if (hls->flags & HLS_SINGLE_FILE) {
2655 vs->fmp4_init_filename = av_strdup(vs->basename);
2656 if (!vs->fmp4_init_filename) {
2657 ret = AVERROR(ENOMEM);
2661 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2662 if (!vs->fmp4_init_filename ) {
2663 ret = AVERROR(ENOMEM);
2666 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2667 fmp4_init_filename_len);
2668 if (hls->nb_varstreams > 1) {
2669 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2674 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2675 strlen(vs->fmp4_init_filename) + 1;
2677 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2678 if (!vs->base_output_dirname) {
2679 ret = AVERROR(ENOMEM);
2683 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2684 fmp4_init_filename_len);
2685 p = strrchr(vs->base_output_dirname, '/');
2688 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2689 fmp4_init_filename_len);
2691 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2692 fmp4_init_filename_len);
2697 if (!hls->use_localtime) {
2698 ret = sls_flag_check_duration_size_index(hls);
2703 ret = sls_flag_check_duration_size(hls, vs);
2708 if (vs->has_subtitle) {
2710 if (hls->flags & HLS_SINGLE_FILE)
2711 vtt_pattern = ".vtt";
2712 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2714 vs->vtt_basename = av_malloc(vtt_basename_size);
2715 if (!vs->vtt_basename) {
2716 ret = AVERROR(ENOMEM);
2719 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2720 if (!vs->vtt_m3u8_name ) {
2721 ret = AVERROR(ENOMEM);
2724 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2725 p = strrchr(vs->vtt_basename, '.');
2729 if ( hls->subtitle_filename ) {
2730 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2731 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2735 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2736 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2738 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2742 vs->baseurl = av_strdup(hls->baseurl);
2744 ret = AVERROR(ENOMEM);
2749 if ((ret = hls_mux_init(s, vs)) < 0)
2752 if (hls->flags & HLS_APPEND_LIST) {
2753 parse_playlist(s, vs->m3u8_name, vs);
2754 vs->discontinuity = 1;
2755 if (hls->init_time > 0) {
2756 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2757 " hls_init_time value will have no effect\n");
2759 hls->recording_time = hls->time * AV_TIME_BASE;
2763 if ((ret = hls_start(s, vs)) < 0)
2769 av_freep(&hls->key_basename);
2770 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2771 vs = &hls->var_streams[i];
2772 av_freep(&vs->basename);
2773 av_freep(&vs->vtt_basename);
2774 av_freep(&vs->fmp4_init_filename);
2775 av_freep(&vs->m3u8_name);
2776 av_freep(&vs->vtt_m3u8_name);
2777 av_freep(&vs->streams);
2778 av_freep(&vs->agroup);
2779 av_freep(&vs->ccgroup);
2780 av_freep(&vs->baseurl);
2782 avformat_free_context(vs->avf);
2784 avformat_free_context(vs->vtt_avf);
2786 for (i = 0; i < hls->nb_ccstreams; i++) {
2787 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2788 av_freep(&ccs->ccgroup);
2789 av_freep(&ccs->instreamid);
2790 av_freep(&ccs->language);
2792 av_freep(&hls->var_streams);
2793 av_freep(&hls->cc_streams);
2794 av_freep(&hls->master_m3u8_url);
2800 #define OFFSET(x) offsetof(HLSContext, x)
2801 #define E AV_OPT_FLAG_ENCODING_PARAM
2802 static const AVOption options[] = {
2803 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2804 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2805 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2806 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2807 {"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},
2808 {"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},
2809 {"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},
2811 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2813 {"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},
2814 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2815 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2816 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2817 {"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},
2818 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2819 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2820 {"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},
2821 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2822 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2823 {"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"},
2824 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2825 {"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"},
2826 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2827 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2828 {"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"},
2829 {"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"},
2830 {"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"},
2831 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2832 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2833 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2834 {"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"},
2835 {"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"},
2836 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2837 {"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"},
2838 {"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"},
2839 {"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"},
2840 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2841 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2842 {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2843 {"use_localtime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2844 {"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" },
2845 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2846 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2847 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2848 {"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" },
2849 {"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" },
2850 {"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" },
2851 {"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" },
2852 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2853 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2854 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2855 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2856 {"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},
2857 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2858 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2862 static const AVClass hls_class = {
2863 .class_name = "hls muxer",
2864 .item_name = av_default_item_name,
2866 .version = LIBAVUTIL_VERSION_INT,
2870 AVOutputFormat ff_hls_muxer = {
2872 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2873 .extensions = "m3u8",
2874 .priv_data_size = sizeof(HLSContext),
2875 .audio_codec = AV_CODEC_ID_AAC,
2876 .video_codec = AV_CODEC_ID_H264,
2877 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2878 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
2880 .write_header = hls_write_header,
2881 .write_packet = hls_write_packet,
2882 .write_trailer = hls_write_trailer,
2883 .priv_class = &hls_class,