2 * Apple HTTP Live Streaming segmenter
3 * Copyright (c) 2012, Luca Barbato
4 * Copyright (c) 2017 Akamai Technologies, Inc.
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
33 #include <openssl/rand.h>
36 #include "libavutil/avassert.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/avstring.h"
40 #include "libavutil/intreadwrite.h"
41 #include "libavutil/random_seed.h"
42 #include "libavutil/opt.h"
43 #include "libavutil/log.h"
44 #include "libavutil/time_internal.h"
47 #include "avio_internal.h"
48 #if CONFIG_HTTP_PROTOCOL
51 #include "hlsplaylist.h"
53 #include "os_support.h"
56 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
57 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
58 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
59 } StartSequenceSourceType;
62 CODEC_ATTRIBUTE_WRITTEN = 0,
63 CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN,
64 } CodecAttributeStatus;
67 #define LINE_BUFFER_SIZE 1024
68 #define HLS_MICROSECOND_UNIT 1000000
69 #define POSTFIX_PATTERN "_%d"
71 typedef struct HLSSegment {
73 char sub_filename[1024];
74 double duration; /* in seconds */
78 unsigned var_stream_idx;
80 char key_uri[LINE_BUFFER_SIZE + 1];
81 char iv_string[KEYSIZE*2 + 1];
83 struct HLSSegment *next;
86 typedef enum HLSFlags {
87 // Generate a single media file and use byte ranges in the playlist.
88 HLS_SINGLE_FILE = (1 << 0),
89 HLS_DELETE_SEGMENTS = (1 << 1),
90 HLS_ROUND_DURATIONS = (1 << 2),
91 HLS_DISCONT_START = (1 << 3),
92 HLS_OMIT_ENDLIST = (1 << 4),
93 HLS_SPLIT_BY_TIME = (1 << 5),
94 HLS_APPEND_LIST = (1 << 6),
95 HLS_PROGRAM_DATE_TIME = (1 << 7),
96 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
97 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
98 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
99 HLS_TEMP_FILE = (1 << 11),
100 HLS_PERIODIC_REKEY = (1 << 12),
101 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
109 typedef struct VariantStream {
110 unsigned var_stream_idx;
113 AVOutputFormat *oformat;
114 AVOutputFormat *vtt_oformat;
117 int init_range_length;
119 AVFormatContext *avf;
120 AVFormatContext *vtt_avf;
125 double dpp; // duration per packet
128 double duration; // last segment duration computed so far, in seconds
129 int64_t start_pos; // last segment starting position
130 int64_t size; // last segment size
132 int discontinuity_set;
134 int reference_stream_index;
136 HLSSegment *segments;
137 HLSSegment *last_segment;
138 HLSSegment *old_segments;
145 double initial_prog_date_time;
146 char current_segment_final_filename_fmt[1024]; // when renaming segments
148 char *fmp4_init_filename;
149 char *base_output_dirname;
152 char codec_attr[128];
153 CodecAttributeStatus attr_status;
154 unsigned int nb_streams;
155 int m3u8_created; /* status of media play-list creation */
156 char *agroup; /* audio group name */
157 char *ccgroup; /* closed caption group name */
161 typedef struct ClosedCaptionsStream {
162 char *ccgroup; /* closed caption group name */
163 char *instreamid; /* closed captions INSTREAM-ID */
164 char *language; /* closed captions langauge */
165 } ClosedCaptionsStream;
167 typedef struct HLSContext {
168 const AVClass *class; // Class for private options.
169 int64_t start_sequence;
170 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
172 float time; // Set by a private option.
173 float init_time; // Set by a private option.
174 int max_nb_segments; // Set by a private option.
175 int hls_delete_threshold; // Set by a private option.
177 int wrap; // Set by a private option.
179 uint32_t flags; // enum HLSFlags
180 uint32_t pl_type; // enum PlaylistType
181 char *segment_filename;
182 char *fmp4_init_filename;
185 int use_localtime; ///< flag to expand filename with localtime
186 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
188 int64_t recording_time;
189 int64_t max_seg_size; // every segment file max size
192 char *format_options_str;
193 char *vtt_format_options_str;
194 char *subtitle_filename;
195 AVDictionary *format_options;
205 char key_file[LINE_BUFFER_SIZE + 1];
206 char key_uri[LINE_BUFFER_SIZE + 1];
207 char key_string[KEYSIZE*2 + 1];
208 char iv_string[KEYSIZE*2 + 1];
209 AVDictionary *vtt_format_options;
214 VariantStream *var_streams;
215 unsigned int nb_varstreams;
216 ClosedCaptionsStream *cc_streams;
217 unsigned int nb_ccstreams;
219 int master_m3u8_created; /* status of master play-list creation */
220 char *master_m3u8_url; /* URL of the master m3u8 file */
221 int version; /* HLS version */
222 char *var_stream_map; /* user specified variant stream map string */
223 char *cc_stream_map; /* user specified closed caption streams map string */
224 char *master_pl_name;
225 unsigned int master_publish_rate;
227 AVIOContext *m3u8_out;
228 AVIOContext *sub_m3u8_out;
230 int ignore_io_errors;
233 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
234 AVDictionary **options) {
235 HLSContext *hls = s->priv_data;
236 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
237 int err = AVERROR_MUXER_NOT_FOUND;
238 if (!*pb || !http_base_proto || !hls->http_persistent) {
239 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
240 #if CONFIG_HTTP_PROTOCOL
242 URLContext *http_url_context = ffio_geturlcontext(*pb);
243 av_assert0(http_url_context);
244 err = ff_http_do_new_request(http_url_context, filename);
246 ff_format_io_close(s, pb);
253 static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
254 HLSContext *hls = s->priv_data;
255 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
258 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
259 ff_format_io_close(s, pb);
260 #if CONFIG_HTTP_PROTOCOL
262 URLContext *http_url_context = ffio_geturlcontext(*pb);
263 av_assert0(http_url_context);
265 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
270 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
272 int http_base_proto = ff_is_http_proto(s->url);
275 av_dict_set(options, "method", c->method, 0);
276 } else if (http_base_proto) {
277 av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
278 av_dict_set(options, "method", "PUT", 0);
281 av_dict_set(options, "user_agent", c->user_agent, 0);
282 if (c->http_persistent)
283 av_dict_set_int(options, "multiple_requests", 1, 0);
285 av_dict_set_int(options, "timeout", c->timeout, 0);
288 static void write_codec_attr(AVStream *st, VariantStream *vs) {
289 int codec_strlen = strlen(vs->codec_attr);
292 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
294 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
297 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
298 uint8_t *data = st->codecpar->extradata;
299 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
300 snprintf(attr, sizeof(attr),
301 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
305 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
306 snprintf(attr, sizeof(attr), "mp4a.40.33");
307 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
308 snprintf(attr, sizeof(attr), "mp4a.40.34");
309 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
310 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
311 snprintf(attr, sizeof(attr), "mp4a.40.2");
312 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
313 snprintf(attr, sizeof(attr), "ac-3");
314 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
315 snprintf(attr, sizeof(attr), "ec-3");
319 // Don't write the same attribute multiple times
320 if (!av_stristr(vs->codec_attr, attr)) {
321 snprintf(vs->codec_attr + codec_strlen,
322 sizeof(vs->codec_attr) - codec_strlen,
323 "%s%s", codec_strlen ? "," : "", attr);
328 vs->codec_attr[0] = '\0';
329 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
333 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
338 int nd, addchar_count;
342 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
349 if (c == '%' && *(p+1) == '%') // %%
351 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
354 while (av_isdigit(*(p + addchar_count))) {
355 nd = nd * 10 + *(p + addchar_count) - '0';
359 if (*(p + addchar_count) == placeholder) {
360 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
361 p += (addchar_count + 1);
369 av_bprint_append_data(&buf, p, addchar_count);
372 if (!av_bprint_is_complete(&buf)) {
373 av_bprint_finalize(&buf, NULL);
376 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
382 static void write_styp(AVIOContext *pb)
385 ffio_wfourcc(pb, "styp");
386 ffio_wfourcc(pb, "msdh");
387 avio_wb32(pb, 0); /* minor */
388 ffio_wfourcc(pb, "msdh");
389 ffio_wfourcc(pb, "msix");
392 static int flush_dynbuf(VariantStream *vs, int *range_length)
394 AVFormatContext *ctx = vs->avf;
398 return AVERROR(EINVAL);
402 av_write_frame(ctx, NULL);
406 *range_length = avio_close_dyn_buf(ctx->pb, &buffer);
408 avio_write(vs->out, buffer, *range_length);
412 return avio_open_dyn_buf(&ctx->pb);
415 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
418 HLSSegment *segment, *previous_segment = NULL;
419 float playlist_duration = 0.0f;
420 int ret = 0, path_size, sub_path_size;
422 char *dirname = NULL, *p, *sub_path;
424 char *vtt_dirname = NULL;
425 AVDictionary *options = NULL;
426 AVIOContext *out = NULL;
427 const char *proto = NULL;
429 segment = vs->segments;
431 playlist_duration += segment->duration;
432 segment = segment->next;
435 segment = vs->old_segments;
438 playlist_duration -= segment->duration;
439 previous_segment = segment;
440 segment = previous_segment->next;
442 if (playlist_duration <= -previous_segment->duration) {
443 previous_segment->next = NULL;
446 if (segment_cnt >= hls->hls_delete_threshold) {
447 previous_segment->next = NULL;
452 if (segment && !hls->use_localtime_mkdir) {
453 if (hls->segment_filename) {
454 dirname = av_strdup(hls->segment_filename);
456 dirname = av_strdup(vs->avf->url);
459 ret = AVERROR(ENOMEM);
462 p = (char *)av_basename(dirname);
468 char * r_dirname = dirname;
470 /* if %v is present in the file's directory */
471 if (dirname && av_stristr(dirname, "%v")) {
473 if (replace_int_data_in_filename(&r_dirname, dirname, 'v', segment->var_stream_idx) < 1) {
474 ret = AVERROR(EINVAL);
481 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
483 path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1;
484 path = av_malloc(path_size);
486 ret = AVERROR(ENOMEM);
490 if (hls->use_localtime_mkdir)
491 av_strlcpy(path, segment->filename, path_size);
492 else { // segment->filename contains basename only
493 av_strlcpy(path, dirname, path_size);
494 av_strlcat(path, segment->filename, path_size);
497 proto = avio_find_protocol_name(s->url);
498 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
499 av_dict_set(&options, "method", "DELETE", 0);
500 if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0) {
501 if (hls->ignore_io_errors)
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 vtt_dirname = av_strdup(vs->vtt_avf->url);
514 ret = AVERROR(ENOMEM);
517 p = (char *)av_basename(vtt_dirname);
519 sub_path_size = strlen(segment->sub_filename) + 1 + strlen(vtt_dirname);
520 sub_path = av_malloc(sub_path_size);
522 ret = AVERROR(ENOMEM);
526 av_strlcpy(sub_path, vtt_dirname, sub_path_size);
527 av_strlcat(sub_path, segment->sub_filename, sub_path_size);
529 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
530 av_dict_set(&options, "method", "DELETE", 0);
531 if ((ret = vs->vtt_avf->io_open(vs->vtt_avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) {
532 if (hls->ignore_io_errors)
537 ff_format_io_close(vs->vtt_avf, &out);
538 } else if (unlink(sub_path) < 0) {
539 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
540 sub_path, strerror(errno));
545 previous_segment = segment;
546 segment = previous_segment->next;
547 av_free(previous_segment);
553 av_free(vtt_dirname);
558 static int randomize(uint8_t *buf, int len)
561 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
564 if (RAND_bytes(buf, len))
567 return AVERROR(ENOSYS);
569 return AVERROR(EINVAL);
572 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
574 HLSContext *hls = s->priv_data;
578 uint8_t key[KEYSIZE];
580 len = strlen(s->url) + 4 + 1;
581 hls->key_basename = av_mallocz(len);
582 if (!hls->key_basename)
583 return AVERROR(ENOMEM);
585 av_strlcpy(hls->key_basename, s->url, len);
586 av_strlcat(hls->key_basename, ".key", len);
589 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
590 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
592 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
593 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
596 if (!*hls->iv_string) {
597 uint8_t iv[16] = { 0 };
601 AV_WB64(iv + 8, vs->sequence);
603 memcpy(iv, hls->iv, sizeof(iv));
605 ff_data_to_hex(buf, iv, sizeof(iv), 0);
607 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
610 if (!*hls->key_uri) {
611 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
612 return AVERROR(EINVAL);
615 if (!*hls->key_file) {
616 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
617 return AVERROR(EINVAL);
620 if (!*hls->key_string) {
622 if ((ret = randomize(key, sizeof(key))) < 0) {
623 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
627 memcpy(key, hls->key, sizeof(key));
630 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
631 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0)
633 avio_seek(pb, 0, SEEK_CUR);
634 avio_write(pb, key, KEYSIZE);
641 static int hls_encryption_start(AVFormatContext *s)
643 HLSContext *hls = s->priv_data;
646 uint8_t key[KEYSIZE];
648 if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) {
649 av_log(hls, AV_LOG_ERROR,
650 "error opening key info file %s\n", hls->key_info_file);
654 ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri));
655 hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0';
657 ff_get_line(pb, hls->key_file, sizeof(hls->key_file));
658 hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0';
660 ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string));
661 hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0';
663 ff_format_io_close(s, &pb);
665 if (!*hls->key_uri) {
666 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
667 return AVERROR(EINVAL);
670 if (!*hls->key_file) {
671 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
672 return AVERROR(EINVAL);
675 if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) {
676 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file);
680 ret = avio_read(pb, key, sizeof(key));
681 ff_format_io_close(s, &pb);
682 if (ret != sizeof(key)) {
683 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file);
684 if (ret >= 0 || ret == AVERROR_EOF)
685 ret = AVERROR(EINVAL);
688 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
693 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
695 AVDictionary *options = NULL;
696 HLSContext *hls = s->priv_data;
698 AVFormatContext *vtt_oc = NULL;
699 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
702 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
707 oc->url = av_strdup("");
709 return AVERROR(ENOMEM);
711 oc->oformat = vs->oformat;
712 oc->interrupt_callback = s->interrupt_callback;
713 oc->max_delay = s->max_delay;
714 oc->opaque = s->opaque;
715 oc->io_open = s->io_open;
716 oc->io_close = s->io_close;
717 av_dict_copy(&oc->metadata, s->metadata, 0);
719 if(vs->vtt_oformat) {
720 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
723 vtt_oc = vs->vtt_avf;
724 vtt_oc->oformat = vs->vtt_oformat;
725 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
728 for (i = 0; i < vs->nb_streams; i++) {
730 AVFormatContext *loc;
731 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
736 if (!(st = avformat_new_stream(loc, NULL)))
737 return AVERROR(ENOMEM);
738 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
739 if (!oc->oformat->codec_tag ||
740 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
741 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
742 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
744 st->codecpar->codec_tag = 0;
747 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
748 st->time_base = vs->streams[i]->time_base;
749 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
752 vs->packets_written = 1;
756 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
757 if (hls->max_seg_size > 0) {
758 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
759 return AVERROR_PATCHWELCOME;
762 vs->packets_written = 0;
763 vs->init_range_length = 0;
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", AV_DICT_APPEND);
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 strftime 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 strfime 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 strftime 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 en->var_stream_idx = vs->var_stream_idx;
969 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
974 filename = av_basename(vs->avf->url);
976 if (hls->use_localtime_mkdir) {
977 filename = vs->avf->url;
979 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
980 && !byterange_mode) {
981 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
983 av_strlcpy(en->filename, filename, sizeof(en->filename));
986 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
988 en->sub_filename[0] = '\0';
990 en->duration = duration;
996 if (vs->discontinuity) {
998 vs->discontinuity = 0;
1001 if (hls->key_info_file || hls->encrypt) {
1002 av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri));
1003 av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string));
1009 vs->last_segment->next = en;
1011 vs->last_segment = en;
1013 // EVENT or VOD playlists imply sliding window cannot be used
1014 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1015 hls->max_nb_segments = 0;
1017 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1019 vs->initial_prog_date_time += en->duration;
1020 vs->segments = en->next;
1021 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1023 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1025 !(hls->flags & HLS_SINGLE_FILE)) {
1027 en->next = vs->old_segments;
1028 vs->old_segments = en;
1029 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1036 if (hls->max_seg_size > 0) {
1044 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1046 HLSContext *hls = s->priv_data;
1048 int ret = 0, is_segment = 0;
1049 int64_t new_start_pos;
1054 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1055 &s->interrupt_callback, NULL,
1056 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1059 ff_get_chomp_line(in, line, sizeof(line));
1060 if (strcmp(line, "#EXTM3U")) {
1061 ret = AVERROR_INVALIDDATA;
1065 vs->discontinuity = 0;
1066 while (!avio_feof(in)) {
1067 ff_get_chomp_line(in, line, sizeof(line));
1068 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1069 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1070 if (tmp_sequence < vs->sequence)
1071 av_log(hls, AV_LOG_VERBOSE,
1072 "Found playlist sequence number was smaller """
1073 "than specified start sequence number: %"PRId64" < %"PRId64", "
1074 "omitting\n", tmp_sequence, hls->start_sequence);
1076 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1077 vs->sequence = tmp_sequence;
1079 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1081 vs->discontinuity = 1;
1082 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1084 vs->duration = atof(ptr);
1085 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1086 ptr = av_stristr(line, "URI=\"");
1088 ptr += strlen("URI=\"");
1089 end = av_stristr(ptr, ",");
1091 av_strlcpy(hls->key_uri, ptr, end - ptr);
1093 av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri));
1097 ptr = av_stristr(line, "IV=0x");
1099 ptr += strlen("IV=0x");
1100 end = av_stristr(ptr, ",");
1102 av_strlcpy(hls->iv_string, ptr, end - ptr);
1104 av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string));
1108 } else if (av_strstart(line, "#", NULL)) {
1110 } else if (line[0]) {
1112 char *new_file = av_strdup(line);
1114 ret = AVERROR(ENOMEM);
1117 ff_format_set_url(vs->avf, new_file);
1119 new_start_pos = avio_tell(vs->avf->pb);
1120 vs->size = new_start_pos - vs->start_pos;
1121 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1124 vs->start_pos = new_start_pos;
1134 static void hls_free_segments(HLSSegment *p)
1145 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1147 size_t len = strlen(oc->url);
1148 char *final_filename = av_strdup(oc->url);
1151 if (!final_filename)
1152 return AVERROR(ENOMEM);
1153 final_filename[len-4] = '\0';
1154 ret = ff_rename(oc->url, final_filename, s);
1155 oc->url[len-4] = '\0';
1156 av_freep(&final_filename);
1160 static int get_relative_url(const char *master_url, const char *media_url,
1161 char *rel_url, int rel_url_buf_size)
1165 p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\
1166 strrchr(master_url, '\\');
1168 base_len = FFABS(p - master_url);
1169 if (av_strncasecmp(master_url, media_url, base_len)) {
1170 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1171 return AVERROR(EINVAL);
1174 av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size);
1178 static int64_t get_stream_bit_rate(AVStream *stream) {
1179 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1181 AV_PKT_DATA_CPB_PROPERTIES,
1185 if (stream->codecpar->bit_rate)
1186 return stream->codecpar->bit_rate;
1188 return props->max_bitrate;
1193 static int create_master_playlist(AVFormatContext *s,
1194 VariantStream * const input_vs)
1196 HLSContext *hls = s->priv_data;
1197 VariantStream *vs, *temp_vs;
1198 AVStream *vid_st, *aud_st;
1199 AVDictionary *options = NULL;
1201 int m3u8_name_size, ret, bandwidth;
1202 char *m3u8_rel_name, *ccgroup;
1203 ClosedCaptionsStream *ccs;
1205 input_vs->m3u8_created = 1;
1206 if (!hls->master_m3u8_created) {
1207 /* For the first time, wait until all the media playlists are created */
1208 for (i = 0; i < hls->nb_varstreams; i++)
1209 if (!hls->var_streams[i].m3u8_created)
1212 /* Keep publishing the master playlist at the configured rate */
1213 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1214 input_vs->number % hls->master_publish_rate)
1218 set_http_options(s, &options, hls);
1220 ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options);
1221 av_dict_free(&options);
1223 av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1224 hls->master_m3u8_url);
1228 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1230 for (i = 0; i < hls->nb_ccstreams; i++) {
1231 ccs = &(hls->cc_streams[i]);
1232 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1233 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1234 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1236 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1237 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1240 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1241 for (i = 0; i < hls->nb_varstreams; i++) {
1242 vs = &(hls->var_streams[i]);
1244 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1247 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1248 m3u8_rel_name = av_malloc(m3u8_name_size);
1249 if (!m3u8_rel_name) {
1250 ret = AVERROR(ENOMEM);
1253 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1254 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1255 m3u8_rel_name, m3u8_name_size);
1257 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1261 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, i, 1);
1263 av_freep(&m3u8_rel_name);
1266 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1267 for (i = 0; i < hls->nb_varstreams; i++) {
1268 vs = &(hls->var_streams[i]);
1270 m3u8_name_size = strlen(vs->m3u8_name) + 1;
1271 m3u8_rel_name = av_malloc(m3u8_name_size);
1272 if (!m3u8_rel_name) {
1273 ret = AVERROR(ENOMEM);
1276 av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size);
1277 ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name,
1278 m3u8_rel_name, m3u8_name_size);
1280 av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n");
1286 for (j = 0; j < vs->nb_streams; j++) {
1287 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1288 vid_st = vs->streams[j];
1289 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1290 aud_st = vs->streams[j];
1293 if (!vid_st && !aud_st) {
1294 av_log(NULL, AV_LOG_WARNING, "Media stream not found\n");
1299 * Traverse through the list of audio only rendition streams and find
1300 * the rendition which has highest bitrate in the same audio group
1303 for (j = 0; j < hls->nb_varstreams; j++) {
1304 temp_vs = &(hls->var_streams[j]);
1305 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1307 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1309 aud_st = temp_vs->streams[0];
1310 if (temp_vs->streams[0]->codecpar->bit_rate >
1311 aud_st->codecpar->bit_rate)
1312 aud_st = temp_vs->streams[0];
1319 bandwidth += get_stream_bit_rate(vid_st);
1321 bandwidth += get_stream_bit_rate(aud_st);
1322 bandwidth += bandwidth / 10;
1325 if (vid_st && vs->ccgroup) {
1326 /* check if this group name is available in the cc map string */
1327 for (j = 0; j < hls->nb_ccstreams; j++) {
1328 ccs = &(hls->cc_streams[j]);
1329 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1330 ccgroup = vs->ccgroup;
1334 if (j == hls->nb_ccstreams)
1335 av_log(NULL, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1339 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1340 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup);
1342 av_freep(&m3u8_rel_name);
1346 hls->master_m3u8_created = 1;
1347 av_freep(&m3u8_rel_name);
1348 hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url);
1352 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1354 HLSContext *hls = s->priv_data;
1356 int target_duration = 0;
1358 char temp_filename[1024];
1359 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1360 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1361 int is_file_proto = proto && !strcmp(proto, "file");
1362 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1363 static unsigned warned_non_file;
1364 char *key_uri = NULL;
1365 char *iv_string = NULL;
1366 AVDictionary *options = NULL;
1367 double prog_date_time = vs->initial_prog_date_time;
1368 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1369 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1372 if (byterange_mode) {
1377 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1381 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1385 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1386 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1388 set_http_options(s, &options, hls);
1389 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1390 if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0) {
1391 if (hls->ignore_io_errors)
1396 for (en = vs->segments; en; en = en->next) {
1397 if (target_duration <= en->duration)
1398 target_duration = lrint(en->duration);
1401 vs->discontinuity_set = 0;
1402 ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache,
1403 target_duration, sequence, hls->pl_type);
1405 if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){
1406 avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n");
1407 vs->discontinuity_set = 1;
1409 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1410 avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1412 for (en = vs->segments; en; en = en->next) {
1413 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1414 av_strcasecmp(en->iv_string, iv_string))) {
1415 avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1417 avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string);
1418 avio_printf(hls->m3u8_out, "\n");
1419 key_uri = en->key_uri;
1420 iv_string = en->iv_string;
1423 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1424 ff_hls_write_init_file(hls->m3u8_out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1425 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1428 ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode,
1429 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1430 en->size, en->pos, vs->baseurl,
1431 en->filename, prog_date_time_p);
1433 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1437 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1438 ff_hls_write_end_list(hls->m3u8_out);
1440 if( vs->vtt_m3u8_name ) {
1441 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0) {
1442 if (hls->ignore_io_errors)
1446 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1447 target_duration, sequence, PLAYLIST_TYPE_NONE);
1448 for (en = vs->segments; en; en = en->next) {
1449 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1450 en->duration, 0, en->size, en->pos,
1451 vs->baseurl, en->sub_filename, NULL);
1453 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1458 ff_hls_write_end_list(hls->sub_m3u8_out);
1463 av_dict_free(&options);
1464 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1465 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1467 ff_rename(temp_filename, vs->m3u8_name, s);
1468 if (ret >= 0 && hls->master_pl_name)
1469 if (create_master_playlist(s, vs) < 0)
1470 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1475 static int hls_start(AVFormatContext *s, VariantStream *vs)
1477 HLSContext *c = s->priv_data;
1478 AVFormatContext *oc = vs->avf;
1479 AVFormatContext *vtt_oc = vs->vtt_avf;
1480 AVDictionary *options = NULL;
1481 const char *proto = NULL;
1482 int use_temp_file = 0;
1483 char *filename, iv_string[KEYSIZE*2 + 1];
1486 if (c->flags & HLS_SINGLE_FILE) {
1487 char *new_name = av_strdup(vs->basename);
1489 return AVERROR(ENOMEM);
1490 ff_format_set_url(oc, new_name);
1491 if (vs->vtt_basename) {
1492 new_name = av_strdup(vs->vtt_basename);
1494 return AVERROR(ENOMEM);
1495 ff_format_set_url(vtt_oc, new_name);
1497 } else if (c->max_seg_size > 0) {
1498 char *filename = NULL;
1499 if (replace_int_data_in_filename(&filename,
1501 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1503 vs->basename, 'd', vs->sequence) < 1) {
1506 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1507 return AVERROR(EINVAL);
1509 ff_format_set_url(oc, filename);
1511 if (c->use_localtime) {
1513 struct tm *tm, tmpbuf;
1514 int bufsize = strlen(vs->basename) + 1024;
1515 char *buf = av_mallocz(bufsize);
1517 return AVERROR(ENOMEM);
1519 tm = localtime_r(&now0, &tmpbuf);
1520 ff_format_set_url(oc, buf);
1521 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1522 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1523 return AVERROR(EINVAL);
1526 err = sls_flag_use_localtime_filename(oc, c, vs);
1528 return AVERROR(ENOMEM);
1531 if (c->use_localtime_mkdir) {
1533 char *fn_copy = av_strdup(oc->url);
1535 return AVERROR(ENOMEM);
1537 dir = av_dirname(fn_copy);
1538 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1539 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1541 return AVERROR(errno);
1546 char *filename = NULL;
1547 if (replace_int_data_in_filename(&filename,
1549 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1551 vs->basename, 'd', vs->sequence) < 1) {
1554 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1555 return AVERROR(EINVAL);
1557 ff_format_set_url(oc, filename);
1559 if( vs->vtt_basename) {
1560 char *filename = NULL;
1561 if (replace_int_data_in_filename(&filename,
1563 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1565 vs->vtt_basename, 'd', vs->sequence) < 1) {
1568 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1569 return AVERROR(EINVAL);
1571 ff_format_set_url(vtt_oc, filename);
1576 set_http_options(s, &options, c);
1578 proto = avio_find_protocol_name(oc->url);
1579 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1581 if (use_temp_file) {
1582 char *new_name = av_asprintf("%s.tmp", oc->url);
1584 return AVERROR(ENOMEM);
1585 ff_format_set_url(oc, new_name);
1588 if (c->key_info_file || c->encrypt) {
1589 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1590 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1591 return AVERROR_PATCHWELCOME;
1594 if (c->key_info_file && c->encrypt) {
1595 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1596 " ignoring -hls_enc\n");
1599 if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1600 if (c->key_info_file) {
1601 if ((err = hls_encryption_start(s)) < 0)
1604 if ((err = do_encrypt(s, vs)) < 0)
1607 c->encrypt_started = 1;
1609 if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0))
1612 err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string));
1614 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1615 if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0)
1618 filename = av_asprintf("crypto:%s", oc->url);
1620 err = AVERROR(ENOMEM);
1623 err = hlsenc_io_open(s, &oc->pb, filename, &options);
1625 av_dict_free(&options);
1628 } else if (c->segment_type != SEGMENT_TYPE_FMP4) {
1629 if ((err = hlsenc_io_open(s, &oc->pb, oc->url, &options)) < 0) {
1630 if (c->ignore_io_errors)
1635 if (vs->vtt_basename) {
1636 set_http_options(s, &options, c);
1637 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1638 if (c->ignore_io_errors)
1643 av_dict_free(&options);
1645 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1646 /* We only require one PAT/PMT per segment. */
1647 if (oc->oformat->priv_class && oc->priv_data) {
1650 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
1652 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1653 av_opt_set(oc->priv_data, "sdt_period", period, 0);
1654 av_opt_set(oc->priv_data, "pat_period", period, 0);
1658 if (vs->vtt_basename) {
1659 err = avformat_write_header(vtt_oc,NULL);
1666 av_dict_free(&options);
1671 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1674 time_t t = time(NULL);
1675 struct tm *p, tmbuf;
1676 HLSContext *hls = s->priv_data;
1678 p = localtime_r(&t, &tmbuf);
1679 // no %s support when strftime returned error or left format string unchanged
1680 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1681 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1682 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1684 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1687 static int append_postfix(char *name, int name_buf_len, int i)
1690 char extension[10] = {'\0'};
1692 p = strrchr(name, '.');
1694 av_strlcpy(extension, p, sizeof(extension));
1698 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1700 if (strlen(extension))
1701 av_strlcat(name, extension, name_buf_len);
1706 static int validate_name(int nb_vs, const char *fn)
1708 const char *filename, *subdir_name;
1709 char *fn_dup = NULL;
1713 ret = AVERROR(EINVAL);
1717 fn_dup = av_strdup(fn);
1719 ret = AVERROR(ENOMEM);
1723 filename = av_basename(fn);
1724 subdir_name = av_dirname(fn_dup);
1726 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1727 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n",
1729 ret = AVERROR(EINVAL);
1733 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1734 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n",
1736 ret = AVERROR(EINVAL);
1745 static int format_name(char *buf, int buf_len, int index)
1747 const char *proto, *dir;
1748 char *orig_buf_dup = NULL, *mod_buf = NULL, *mod_buf_dup = NULL;
1751 if (!av_stristr(buf, "%v"))
1754 orig_buf_dup = av_strdup(buf);
1755 if (!orig_buf_dup) {
1756 ret = AVERROR(ENOMEM);
1760 if (replace_int_data_in_filename(&mod_buf, orig_buf_dup, 'v', index) < 1) {
1761 ret = AVERROR(EINVAL);
1764 av_strlcpy(buf, mod_buf, buf_len);
1766 proto = avio_find_protocol_name(orig_buf_dup);
1767 dir = av_dirname(orig_buf_dup);
1769 /* if %v is present in the file's directory, create sub-directory */
1770 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1771 mod_buf_dup = av_strdup(buf);
1773 ret = AVERROR(ENOMEM);
1777 dir = av_dirname(mod_buf_dup);
1778 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1779 ret = AVERROR(errno);
1785 av_freep(&orig_buf_dup);
1786 av_freep(&mod_buf_dup);
1791 static int get_nth_codec_stream_index(AVFormatContext *s,
1792 enum AVMediaType codec_type,
1795 unsigned int stream_index, cnt;
1796 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1799 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1800 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1802 if (cnt == stream_id)
1803 return stream_index;
1809 static int parse_variant_stream_mapstring(AVFormatContext *s)
1811 HLSContext *hls = s->priv_data;
1814 enum AVMediaType codec_type;
1815 int nb_varstreams, nb_streams;
1816 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1820 * Expected format for var_stream_map string is as below:
1822 * "a:0,agroup:a0 a:1,agroup:a1 v:0,agroup:a0 v:1,agroup:a1"
1823 * This string specifies how to group the audio, video and subtitle streams
1824 * into different variant streams. The variant stream groups are separated
1827 * a:, v:, s: are keys to specify audio, video and subtitle streams
1828 * respectively. Allowed values are 0 to 9 digits (limited just based on
1831 * agroup: is key to specify audio group. A string can be given as value.
1833 p = av_strdup(hls->var_stream_map);
1835 while(av_strtok(q, " \t", &saveptr1)) {
1837 hls->nb_varstreams++;
1841 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams);
1842 if (!hls->var_streams)
1843 return AVERROR(ENOMEM);
1845 p = hls->var_stream_map;
1847 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1850 if (nb_varstreams < hls->nb_varstreams) {
1851 vs = &(hls->var_streams[nb_varstreams]);
1852 vs->var_stream_idx = nb_varstreams;
1855 return AVERROR(EINVAL);
1858 while (q < varstr + strlen(varstr)) {
1859 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1860 !av_strncasecmp(q, "s:", 2))
1864 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1866 return AVERROR(ENOMEM);
1869 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1872 if (av_strstart(keyval, "agroup:", &val)) {
1873 vs->agroup = av_strdup(val);
1875 return AVERROR(ENOMEM);
1877 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1878 vs->ccgroup = av_strdup(val);
1880 return AVERROR(ENOMEM);
1882 } else if (av_strstart(keyval, "v:", &val)) {
1883 codec_type = AVMEDIA_TYPE_VIDEO;
1884 } else if (av_strstart(keyval, "a:", &val)) {
1885 codec_type = AVMEDIA_TYPE_AUDIO;
1886 } else if (av_strstart(keyval, "s:", &val)) {
1887 codec_type = AVMEDIA_TYPE_SUBTITLE;
1889 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1890 return AVERROR(EINVAL);
1894 if (av_isdigit(*val))
1895 stream_index = get_nth_codec_stream_index (s, codec_type,
1898 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
1899 vs->streams[nb_streams++] = s->streams[stream_index];
1901 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
1902 return AVERROR(EINVAL);
1906 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
1907 hls->nb_varstreams);
1912 static int parse_cc_stream_mapstring(AVFormatContext *s)
1914 HLSContext *hls = s->priv_data;
1916 char *p, *q, *ccstr, *keyval;
1917 char *saveptr1 = NULL, *saveptr2 = NULL;
1919 ClosedCaptionsStream *ccs;
1921 p = av_strdup(hls->cc_stream_map);
1923 while(av_strtok(q, " \t", &saveptr1)) {
1925 hls->nb_ccstreams++;
1929 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams);
1930 if (!hls->cc_streams)
1931 return AVERROR(ENOMEM);
1933 p = hls->cc_stream_map;
1935 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
1938 if (nb_ccstreams < hls->nb_ccstreams)
1939 ccs = &(hls->cc_streams[nb_ccstreams++]);
1941 return AVERROR(EINVAL);
1943 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
1946 if (av_strstart(keyval, "ccgroup:", &val)) {
1947 ccs->ccgroup = av_strdup(val);
1949 return AVERROR(ENOMEM);
1950 } else if (av_strstart(keyval, "instreamid:", &val)) {
1951 ccs->instreamid = av_strdup(val);
1952 if (!ccs->instreamid)
1953 return AVERROR(ENOMEM);
1954 } else if (av_strstart(keyval, "language:", &val)) {
1955 ccs->language = av_strdup(val);
1957 return AVERROR(ENOMEM);
1959 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
1960 return AVERROR(EINVAL);
1964 if (!ccs->ccgroup || !ccs->instreamid) {
1965 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
1966 return AVERROR(EINVAL);
1969 if (av_strstart(ccs->instreamid, "CC", &val)) {
1970 if(atoi(val) < 1 || atoi(val) > 4) {
1971 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
1972 atoi(val), ccs->instreamid);
1973 return AVERROR(EINVAL);
1975 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
1976 if(atoi(val) < 1 || atoi(val) > 63) {
1977 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
1978 atoi(val), ccs->instreamid);
1979 return AVERROR(EINVAL);
1982 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n",
1984 return AVERROR(EINVAL);
1991 static int update_variant_stream_info(AVFormatContext *s) {
1992 HLSContext *hls = s->priv_data;
1996 if (hls->cc_stream_map) {
1997 ret = parse_cc_stream_mapstring(s);
2002 if (hls->var_stream_map) {
2003 return parse_variant_stream_mapstring(s);
2005 //By default, a single variant stream with all the codec streams is created
2006 hls->nb_varstreams = 1;
2007 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) *
2008 hls->nb_varstreams);
2009 if (!hls->var_streams)
2010 return AVERROR(ENOMEM);
2012 hls->var_streams[0].var_stream_idx = 0;
2013 hls->var_streams[0].nb_streams = s->nb_streams;
2014 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2015 hls->var_streams[0].nb_streams);
2016 if (!hls->var_streams[0].streams)
2017 return AVERROR(ENOMEM);
2019 //by default, the first available ccgroup is mapped to the variant stream
2020 if (hls->nb_ccstreams) {
2021 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2022 if (!hls->var_streams[0].ccgroup)
2023 return AVERROR(ENOMEM);
2026 for (i = 0; i < s->nb_streams; i++)
2027 hls->var_streams[0].streams[i] = s->streams[i];
2032 static int update_master_pl_info(AVFormatContext *s) {
2033 HLSContext *hls = s->priv_data;
2035 char *fn1= NULL, *fn2 = NULL;
2038 fn1 = av_strdup(s->url);
2040 ret = AVERROR(ENOMEM);
2044 dir = av_dirname(fn1);
2047 * if output file's directory has %v, variants are created in sub-directories
2048 * then master is created at the sub-directories level
2050 if (dir && av_stristr(av_basename(dir), "%v")) {
2051 fn2 = av_strdup(dir);
2053 ret = AVERROR(ENOMEM);
2056 dir = av_dirname(fn2);
2059 if (dir && strcmp(dir, "."))
2060 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2062 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2064 if (!hls->master_m3u8_url) {
2065 ret = AVERROR(ENOMEM);
2076 static int hls_write_header(AVFormatContext *s)
2078 HLSContext *hls = s->priv_data;
2080 VariantStream *vs = NULL;
2082 for (i = 0; i < hls->nb_varstreams; i++) {
2083 vs = &hls->var_streams[i];
2085 ret = avformat_write_header(vs->avf, NULL);
2088 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2089 for (j = 0; j < vs->nb_streams; j++) {
2091 AVStream *outer_st = vs->streams[j];
2093 if (hls->max_seg_size > 0) {
2094 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2095 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2096 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2097 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2098 outer_st->codecpar->bit_rate, hls->max_seg_size);
2102 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2103 inner_st = vs->avf->streams[j];
2104 else if (vs->vtt_avf)
2105 inner_st = vs->vtt_avf->streams[0];
2107 /* We have a subtitle stream, when the user does not want one */
2111 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2112 write_codec_attr(outer_st, vs);
2115 /* Update the Codec Attr string for the mapped audio groups */
2116 if (vs->has_video && vs->agroup) {
2117 for (j = 0; j < hls->nb_varstreams; j++) {
2118 VariantStream *vs_agroup = &(hls->var_streams[j]);
2119 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2120 vs_agroup->agroup &&
2121 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2122 write_codec_attr(vs_agroup->streams[0], vs);
2131 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2133 HLSContext *hls = s->priv_data;
2134 AVFormatContext *oc = NULL;
2135 AVStream *st = s->streams[pkt->stream_index];
2136 int64_t end_pts = 0;
2138 int ret = 0, can_split = 1, i, j;
2139 int stream_index = 0;
2140 int range_length = 0;
2141 const char *proto = NULL;
2142 int use_temp_file = 0;
2143 uint8_t *buffer = NULL;
2144 VariantStream *vs = NULL;
2145 AVDictionary *options = NULL;
2146 char *old_filename = NULL;
2148 for (i = 0; i < hls->nb_varstreams; i++) {
2149 vs = &hls->var_streams[i];
2150 for (j = 0; j < vs->nb_streams; j++) {
2151 if (vs->streams[j] == st) {
2152 if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2168 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2169 return AVERROR(ENOMEM);
2172 end_pts = hls->recording_time * vs->number;
2174 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2175 /* reset end_pts, hls->recording_time at end of the init hls list */
2176 int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2177 int after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2178 hls->recording_time = hls->time * AV_TIME_BASE;
2179 end_pts = init_list_dur + after_init_list_dur ;
2182 if (vs->start_pts == AV_NOPTS_VALUE) {
2183 vs->start_pts = pkt->pts;
2186 if (vs->has_video) {
2187 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2188 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2189 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2191 if (pkt->pts == AV_NOPTS_VALUE)
2192 is_ref_pkt = can_split = 0;
2195 if (vs->end_pts == AV_NOPTS_VALUE)
2196 vs->end_pts = pkt->pts;
2197 if (vs->new_start) {
2199 vs->duration = (double)(pkt->pts - vs->end_pts)
2200 * st->time_base.num / st->time_base.den;
2201 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2203 if (pkt->duration) {
2204 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2206 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2207 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2213 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2214 end_pts, AV_TIME_BASE_Q) >= 0) {
2215 int64_t new_start_pos;
2216 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2218 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2220 new_start_pos = avio_tell(vs->avf->pb);
2221 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2222 vs->size = new_start_pos - vs->start_pos;
2224 vs->size = new_start_pos;
2227 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2228 if (!vs->init_range_length) {
2230 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2231 avio_write(vs->out, buffer, range_length);
2233 vs->init_range_length = range_length;
2234 avio_open_dyn_buf(&oc->pb);
2235 vs->packets_written = 0;
2236 vs->start_pos = range_length;
2237 if (!byterange_mode) {
2238 ff_format_io_close(s, &vs->out);
2239 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2243 if (!byterange_mode) {
2244 hlsenc_io_close(s, &oc->pb, oc->url);
2247 if (!byterange_mode) {
2249 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2254 proto = avio_find_protocol_name(oc->url);
2255 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2258 // look to rename the asset name
2259 if (use_temp_file) {
2260 if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0))
2261 if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4)
2262 av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0);
2265 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2266 if (hls->flags & HLS_SINGLE_FILE) {
2267 ret = flush_dynbuf(vs, &range_length);
2271 vs->size = range_length;
2273 set_http_options(s, &options, hls);
2274 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, &options);
2276 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2277 "Failed to open file '%s'\n", vs->avf->url);
2278 return hls->ignore_io_errors ? 0 : ret;
2280 write_styp(vs->out);
2281 ret = flush_dynbuf(vs, &range_length);
2285 ff_format_io_close(s, &vs->out);
2289 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2290 hls_rename_temp_file(s, oc);
2293 old_filename = av_strdup(vs->avf->url);
2294 if (!old_filename) {
2295 return AVERROR(ENOMEM);
2298 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2299 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
2300 vs->end_pts = pkt->pts;
2303 av_free(old_filename);
2308 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2309 vs->start_pos = new_start_pos;
2311 vs->start_pos += vs->size;
2314 if (hls->flags & HLS_SINGLE_FILE) {
2316 } else if (hls->max_seg_size > 0) {
2317 if (vs->start_pos >= hls->max_seg_size) {
2319 sls_flag_file_rename(hls, vs, old_filename);
2320 ret = hls_start(s, vs);
2322 /* When split segment by byte, the duration is short than hls_time,
2323 * so it is not enough one segment duration as hls_time, */
2328 sls_flag_file_rename(hls, vs, old_filename);
2329 ret = hls_start(s, vs);
2331 av_free(old_filename);
2337 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2338 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2339 if ((ret = hls_window(s, 0, vs)) < 0) {
2345 vs->packets_written++;
2347 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2348 if (hls->ignore_io_errors)
2355 static void hls_free_variant_streams(struct HLSContext *hls)
2358 AVFormatContext *vtt_oc = NULL;
2359 VariantStream *vs = NULL;
2361 for (i = 0; i < hls->nb_varstreams; i++) {
2362 vs = &hls->var_streams[i];
2363 vtt_oc = vs->vtt_avf;
2365 av_freep(&vs->basename);
2366 av_freep(&vs->base_output_dirname);
2367 av_freep(&vs->fmp4_init_filename);
2369 av_freep(&vs->vtt_basename);
2370 av_freep(&vs->vtt_m3u8_name);
2373 hls_free_segments(vs->segments);
2374 hls_free_segments(vs->old_segments);
2375 av_freep(&vs->m3u8_name);
2376 av_freep(&vs->streams);
2377 av_freep(&vs->agroup);
2378 av_freep(&vs->ccgroup);
2379 av_freep(&vs->baseurl);
2383 static int hls_write_trailer(struct AVFormatContext *s)
2385 HLSContext *hls = s->priv_data;
2386 AVFormatContext *oc = NULL;
2387 AVFormatContext *vtt_oc = NULL;
2388 char *old_filename = NULL;
2389 const char *proto = NULL;
2390 int use_temp_file = 0;
2393 VariantStream *vs = NULL;
2395 for (i = 0; i < hls->nb_varstreams; i++) {
2396 vs = &hls->var_streams[i];
2399 vtt_oc = vs->vtt_avf;
2400 old_filename = av_strdup(vs->avf->url);
2403 if (!old_filename) {
2404 return AVERROR(ENOMEM);
2406 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2407 int range_length = 0;
2408 if (!vs->init_range_length) {
2409 uint8_t *buffer = NULL;
2410 int range_length, byterange_mode;
2411 av_write_frame(vs->avf, NULL); /* Flush any buffered data */
2414 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2415 avio_write(vs->out, buffer, range_length);
2417 vs->init_range_length = range_length;
2418 avio_open_dyn_buf(&oc->pb);
2419 vs->packets_written = 0;
2420 vs->start_pos = range_length;
2421 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2422 if (!byterange_mode) {
2423 ff_format_io_close(s, &vs->out);
2424 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2427 if (!(hls->flags & HLS_SINGLE_FILE)) {
2428 ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL);
2430 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url);
2433 write_styp(vs->out);
2435 ret = flush_dynbuf(vs, &range_length);
2439 vs->size = range_length;
2440 ff_format_io_close(s, &vs->out);
2444 av_write_trailer(oc);
2447 proto = avio_find_protocol_name(oc->url);
2448 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2452 if (hls->segment_type != SEGMENT_TYPE_FMP4) {
2453 vs->size = avio_tell(vs->avf->pb) - vs->start_pos;
2454 ff_format_io_close(s, &oc->pb);
2457 // rename that segment from .tmp to the real one
2458 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2459 hls_rename_temp_file(s, oc);
2460 av_free(old_filename);
2461 old_filename = av_strdup(vs->avf->url);
2463 if (!old_filename) {
2464 return AVERROR(ENOMEM);
2468 /* after av_write_trailer, then duration + 1 duration per packet */
2469 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2472 sls_flag_file_rename(hls, vs, old_filename);
2476 av_write_trailer(vtt_oc);
2477 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2478 ff_format_io_close(s, &vtt_oc->pb);
2479 avformat_free_context(vtt_oc);
2481 avformat_free_context(oc);
2484 hls_window(s, 1, vs);
2485 av_free(old_filename);
2488 hls_free_variant_streams(hls);
2490 for (i = 0; i < hls->nb_ccstreams; i++) {
2491 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2492 av_freep(&ccs->ccgroup);
2493 av_freep(&ccs->instreamid);
2494 av_freep(&ccs->language);
2497 ff_format_io_close(s, &hls->m3u8_out);
2498 ff_format_io_close(s, &hls->sub_m3u8_out);
2499 av_freep(&hls->key_basename);
2500 av_freep(&hls->var_streams);
2501 av_freep(&hls->cc_streams);
2502 av_freep(&hls->master_m3u8_url);
2507 static int hls_init(AVFormatContext *s)
2512 HLSContext *hls = s->priv_data;
2513 const char *pattern = "%d.ts";
2514 VariantStream *vs = NULL;
2515 int basename_size = 0;
2516 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2517 const char *vtt_pattern = "%d.vtt";
2519 int vtt_basename_size = 0;
2520 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2522 ret = update_variant_stream_info(s);
2524 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2528 //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present
2529 if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) {
2530 ret = AVERROR(EINVAL);
2531 av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n");
2535 ret = validate_name(hls->nb_varstreams, s->url);
2539 if (hls->segment_filename) {
2540 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2545 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2546 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2551 if (hls->subtitle_filename) {
2552 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2557 if (hls->master_pl_name) {
2558 ret = update_master_pl_info(s);
2560 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2566 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2569 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2570 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2571 time_t t = time(NULL); // we will need it in either case
2572 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2573 hls->start_sequence = (int64_t)t;
2574 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2576 struct tm *p, tmbuf;
2577 if (!(p = localtime_r(&t, &tmbuf)))
2578 return AVERROR(ENOMEM);
2579 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2580 return AVERROR(ENOMEM);
2581 hls->start_sequence = strtoll(b, NULL, 10);
2583 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2586 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2587 for (i = 0; i < hls->nb_varstreams; i++) {
2588 vs = &hls->var_streams[i];
2590 vs->m3u8_name = av_strdup(s->url);
2591 if (!vs->m3u8_name ) {
2592 ret = AVERROR(ENOMEM);
2595 ret = format_name(vs->m3u8_name, strlen(s->url) + 1, i);
2599 vs->sequence = hls->start_sequence;
2600 vs->start_pts = AV_NOPTS_VALUE;
2601 vs->end_pts = AV_NOPTS_VALUE;
2602 vs->current_segment_final_filename_fmt[0] = '\0';
2604 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2605 // Independent segments cannot be guaranteed when splitting by time
2606 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2607 av_log(s, AV_LOG_WARNING,
2608 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2609 "Disabling 'independent_segments' flag\n");
2612 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2615 vs->initial_prog_date_time = now0;
2617 if (hls->format_options_str) {
2618 ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0);
2620 av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str);
2625 for (j = 0; j < vs->nb_streams; j++) {
2626 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2627 /* Get one video stream to reference for split segments
2628 * so use the first video stream index. */
2629 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2630 vs->reference_stream_index = vs->streams[j]->index;
2632 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2635 if (vs->has_video > 1)
2636 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2637 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2638 vs->oformat = av_guess_format("mp4", NULL, NULL);
2640 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2644 ret = AVERROR_MUXER_NOT_FOUND;
2648 if (vs->has_subtitle) {
2649 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2651 ret = AVERROR_MUXER_NOT_FOUND;
2655 if (hls->segment_filename) {
2656 basename_size = strlen(hls->segment_filename) + 1;
2657 vs->basename = av_malloc(basename_size);
2658 if (!vs->basename) {
2659 ret = AVERROR(ENOMEM);
2663 av_strlcpy(vs->basename, hls->segment_filename, basename_size);
2664 ret = format_name(vs->basename, basename_size, i);
2668 if (hls->flags & HLS_SINGLE_FILE) {
2669 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2676 if (hls->use_localtime) {
2677 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2679 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2682 vs->basename = av_malloc(basename_size);
2683 if (!vs->basename) {
2684 ret = AVERROR(ENOMEM);
2688 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2690 p = strrchr(vs->basename, '.');
2693 if (hls->use_localtime) {
2694 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2696 av_strlcat(vs->basename, pattern, basename_size);
2700 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2701 if (hls->nb_varstreams > 1)
2702 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2703 if (hls->flags & HLS_SINGLE_FILE) {
2704 vs->fmp4_init_filename = av_strdup(vs->basename);
2705 if (!vs->fmp4_init_filename) {
2706 ret = AVERROR(ENOMEM);
2710 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2711 if (!vs->fmp4_init_filename ) {
2712 ret = AVERROR(ENOMEM);
2715 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2716 fmp4_init_filename_len);
2717 if (hls->nb_varstreams > 1) {
2718 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2723 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2724 strlen(vs->fmp4_init_filename) + 1;
2726 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2727 if (!vs->base_output_dirname) {
2728 ret = AVERROR(ENOMEM);
2732 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2733 fmp4_init_filename_len);
2734 p = strrchr(vs->base_output_dirname, '/');
2737 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2738 fmp4_init_filename_len);
2740 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2741 fmp4_init_filename_len);
2746 if (!hls->use_localtime) {
2747 ret = sls_flag_check_duration_size_index(hls);
2752 ret = sls_flag_check_duration_size(hls, vs);
2757 if (vs->has_subtitle) {
2759 if (hls->flags & HLS_SINGLE_FILE)
2760 vtt_pattern = ".vtt";
2761 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2763 vs->vtt_basename = av_malloc(vtt_basename_size);
2764 if (!vs->vtt_basename) {
2765 ret = AVERROR(ENOMEM);
2768 vs->vtt_m3u8_name = av_malloc(vtt_basename_size);
2769 if (!vs->vtt_m3u8_name ) {
2770 ret = AVERROR(ENOMEM);
2773 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2774 p = strrchr(vs->vtt_basename, '.');
2778 if ( hls->subtitle_filename ) {
2779 strcpy(vs->vtt_m3u8_name, hls->subtitle_filename);
2780 ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i);
2784 strcpy(vs->vtt_m3u8_name, vs->vtt_basename);
2785 av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size);
2787 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
2791 vs->baseurl = av_strdup(hls->baseurl);
2793 ret = AVERROR(ENOMEM);
2798 if ((ret = hls_mux_init(s, vs)) < 0)
2801 if (hls->flags & HLS_APPEND_LIST) {
2802 parse_playlist(s, vs->m3u8_name, vs);
2803 vs->discontinuity = 1;
2804 if (hls->init_time > 0) {
2805 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2806 " hls_init_time value will have no effect\n");
2808 hls->recording_time = hls->time * AV_TIME_BASE;
2812 if ((ret = hls_start(s, vs)) < 0)
2818 av_freep(&hls->key_basename);
2819 for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) {
2820 vs = &hls->var_streams[i];
2821 av_freep(&vs->basename);
2822 av_freep(&vs->vtt_basename);
2823 av_freep(&vs->fmp4_init_filename);
2824 av_freep(&vs->m3u8_name);
2825 av_freep(&vs->vtt_m3u8_name);
2826 av_freep(&vs->streams);
2827 av_freep(&vs->agroup);
2828 av_freep(&vs->ccgroup);
2829 av_freep(&vs->baseurl);
2831 avformat_free_context(vs->avf);
2833 avformat_free_context(vs->vtt_avf);
2835 for (i = 0; i < hls->nb_ccstreams; i++) {
2836 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2837 av_freep(&ccs->ccgroup);
2838 av_freep(&ccs->instreamid);
2839 av_freep(&ccs->language);
2841 av_freep(&hls->var_streams);
2842 av_freep(&hls->cc_streams);
2843 av_freep(&hls->master_m3u8_url);
2849 #define OFFSET(x) offsetof(HLSContext, x)
2850 #define E AV_OPT_FLAG_ENCODING_PARAM
2851 static const AVOption options[] = {
2852 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
2853 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
2854 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
2855 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
2856 {"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},
2857 {"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},
2858 {"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},
2860 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2862 {"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},
2863 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2864 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2865 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
2866 {"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},
2867 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
2868 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
2869 {"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},
2870 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
2871 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2872 {"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"},
2873 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
2874 {"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"},
2875 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
2876 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
2877 {"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"},
2878 {"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"},
2879 {"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"},
2880 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
2881 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
2882 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
2883 {"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"},
2884 {"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"},
2885 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
2886 {"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"},
2887 {"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"},
2888 {"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"},
2889 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
2890 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
2891 #if FF_API_HLS_USE_LOCALTIME
2892 {"use_localtime", "set filename expansion with strftime at segment creation(will be deprecated )", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2894 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2895 #if FF_API_HLS_USE_LOCALTIME
2896 {"use_localtime_mkdir", "create last directory component in strftime-generated filename(will be deprecated)", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2898 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2899 {"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" },
2900 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
2901 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
2902 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2903 {"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" },
2904 {"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" },
2905 {"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" },
2906 {"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" },
2907 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2908 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2909 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2910 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
2911 {"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},
2912 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
2913 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
2914 {"ignore_io_errors", "Ignore IO errors for stable long-duration runs with network output", OFFSET(ignore_io_errors), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
2918 static const AVClass hls_class = {
2919 .class_name = "hls muxer",
2920 .item_name = av_default_item_name,
2922 .version = LIBAVUTIL_VERSION_INT,
2926 AVOutputFormat ff_hls_muxer = {
2928 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
2929 .extensions = "m3u8",
2930 .priv_data_size = sizeof(HLSContext),
2931 .audio_codec = AV_CODEC_ID_AAC,
2932 .video_codec = AV_CODEC_ID_H264,
2933 .subtitle_codec = AV_CODEC_ID_WEBVTT,
2934 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
2936 .write_header = hls_write_header,
2937 .write_packet = hls_write_packet,
2938 .write_trailer = hls_write_trailer,
2939 .priv_class = &hls_class,