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.h"
45 #include "libavutil/time_internal.h"
48 #include "avio_internal.h"
49 #if CONFIG_HTTP_PROTOCOL
52 #include "hlsplaylist.h"
54 #include "os_support.h"
57 HLS_START_SEQUENCE_AS_START_NUMBER = 0,
58 HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1,
59 HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss
60 HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH = 3,
61 HLS_START_SEQUENCE_LAST, // unused
62 } StartSequenceSourceType;
65 CODEC_ATTRIBUTE_WRITTEN = 0,
66 CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN,
67 } CodecAttributeStatus;
70 #define LINE_BUFFER_SIZE MAX_URL_SIZE
71 #define HLS_MICROSECOND_UNIT 1000000
72 #define BUFSIZE (16 * 1024)
73 #define POSTFIX_PATTERN "_%d"
75 typedef struct HLSSegment {
76 char filename[MAX_URL_SIZE];
77 char sub_filename[MAX_URL_SIZE];
78 double duration; /* in seconds */
83 int64_t keyframe_size;
84 unsigned var_stream_idx;
86 char key_uri[LINE_BUFFER_SIZE + 1];
87 char iv_string[KEYSIZE*2 + 1];
89 struct HLSSegment *next;
92 typedef enum HLSFlags {
93 // Generate a single media file and use byte ranges in the playlist.
94 HLS_SINGLE_FILE = (1 << 0),
95 HLS_DELETE_SEGMENTS = (1 << 1),
96 HLS_ROUND_DURATIONS = (1 << 2),
97 HLS_DISCONT_START = (1 << 3),
98 HLS_OMIT_ENDLIST = (1 << 4),
99 HLS_SPLIT_BY_TIME = (1 << 5),
100 HLS_APPEND_LIST = (1 << 6),
101 HLS_PROGRAM_DATE_TIME = (1 << 7),
102 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
103 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
104 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
105 HLS_TEMP_FILE = (1 << 11),
106 HLS_PERIODIC_REKEY = (1 << 12),
107 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
108 HLS_I_FRAMES_ONLY = (1 << 14),
116 typedef struct VariantStream {
117 unsigned var_stream_idx;
120 ff_const59 AVOutputFormat *oformat;
121 ff_const59 AVOutputFormat *vtt_oformat;
123 AVIOContext *out_single_file;
125 int init_range_length;
126 uint8_t *temp_buffer;
127 uint8_t *init_buffer;
129 AVFormatContext *avf;
130 AVFormatContext *vtt_avf;
135 int start_pts_from_audio;
136 double dpp; // duration per packet
139 int64_t video_lastpos;
140 int64_t video_keyframe_pos;
141 int64_t video_keyframe_size;
142 double duration; // last segment duration computed so far, in seconds
143 int64_t start_pos; // last segment starting position
144 int64_t size; // last segment size
146 int discontinuity_set;
148 int reference_stream_index;
150 HLSSegment *segments;
151 HLSSegment *last_segment;
152 HLSSegment *old_segments;
160 double initial_prog_date_time;
161 char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
163 char *fmp4_init_filename;
164 char *base_output_dirname;
168 char key_file[LINE_BUFFER_SIZE + 1];
169 char key_uri[LINE_BUFFER_SIZE + 1];
170 char key_string[KEYSIZE*2 + 1];
171 char iv_string[KEYSIZE*2 + 1];
174 char codec_attr[128];
175 CodecAttributeStatus attr_status;
176 unsigned int nb_streams;
177 int m3u8_created; /* status of media play-list creation */
178 int is_default; /* default status of audio group */
179 const char *language; /* audio lauguage name */
180 const char *agroup; /* audio group name */
181 const char *sgroup; /* subtitle group name */
182 const char *ccgroup; /* closed caption group name */
183 const char *varname; /* variant name */
186 typedef struct ClosedCaptionsStream {
187 const char *ccgroup; /* closed caption group name */
188 const char *instreamid; /* closed captions INSTREAM-ID */
189 const char *language; /* closed captions langauge */
190 } ClosedCaptionsStream;
192 typedef struct HLSContext {
193 const AVClass *class; // Class for private options.
194 int64_t start_sequence;
195 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
197 float time; // Set by a private option.
198 float init_time; // Set by a private option.
199 int max_nb_segments; // Set by a private option.
200 int hls_delete_threshold; // Set by a private option.
202 int wrap; // Set by a private option.
204 uint32_t flags; // enum HLSFlags
205 uint32_t pl_type; // enum PlaylistType
206 char *segment_filename;
207 char *fmp4_init_filename;
209 int resend_init_file; ///< resend init file into disk after refresh m3u8
211 int use_localtime; ///< flag to expand filename with localtime
212 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
214 int64_t recording_time;
215 int64_t max_seg_size; // every segment file max size
218 char *vtt_format_options_str;
219 char *subtitle_filename;
220 AVDictionary *format_options;
230 char key_file[LINE_BUFFER_SIZE + 1];
231 char key_uri[LINE_BUFFER_SIZE + 1];
232 char key_string[KEYSIZE*2 + 1];
233 char iv_string[KEYSIZE*2 + 1];
234 AVDictionary *vtt_format_options;
239 VariantStream *var_streams;
240 unsigned int nb_varstreams;
241 ClosedCaptionsStream *cc_streams;
242 unsigned int nb_ccstreams;
244 int master_m3u8_created; /* status of master play-list creation */
245 char *master_m3u8_url; /* URL of the master m3u8 file */
246 int version; /* HLS version */
247 char *var_stream_map; /* user specified variant stream map string */
248 char *cc_stream_map; /* user specified closed caption streams map string */
249 char *master_pl_name;
250 unsigned int master_publish_rate;
252 AVIOContext *m3u8_out;
253 AVIOContext *sub_m3u8_out;
255 int ignore_io_errors;
257 int has_default_key; /* has DEFAULT field of var_stream_map */
258 int has_video_m3u8; /* has video stream m3u8 list */
261 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
262 AVDictionary **options)
264 HLSContext *hls = s->priv_data;
265 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
266 int err = AVERROR_MUXER_NOT_FOUND;
267 if (!*pb || !http_base_proto || !hls->http_persistent) {
268 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
269 #if CONFIG_HTTP_PROTOCOL
271 URLContext *http_url_context = ffio_geturlcontext(*pb);
272 av_assert0(http_url_context);
273 err = ff_http_do_new_request(http_url_context, filename);
275 ff_format_io_close(s, pb);
282 static int 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;
289 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
290 ff_format_io_close(s, pb);
291 #if CONFIG_HTTP_PROTOCOL
293 URLContext *http_url_context = ffio_geturlcontext(*pb);
294 av_assert0(http_url_context);
296 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
297 ret = ff_http_get_shutdown_status(http_url_context);
303 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
305 int http_base_proto = ff_is_http_proto(s->url);
308 av_dict_set(options, "method", c->method, 0);
309 } else if (http_base_proto) {
310 av_dict_set(options, "method", "PUT", 0);
313 av_dict_set(options, "user_agent", c->user_agent, 0);
314 if (c->http_persistent)
315 av_dict_set_int(options, "multiple_requests", 1, 0);
317 av_dict_set_int(options, "timeout", c->timeout, 0);
319 av_dict_set(options, "headers", c->headers, 0);
322 static void write_codec_attr(AVStream *st, VariantStream *vs)
324 int codec_strlen = strlen(vs->codec_attr);
327 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
329 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
332 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
333 uint8_t *data = st->codecpar->extradata;
334 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
335 snprintf(attr, sizeof(attr),
336 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
340 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
341 snprintf(attr, sizeof(attr), "mp4a.40.33");
342 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
343 snprintf(attr, sizeof(attr), "mp4a.40.34");
344 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
345 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
346 snprintf(attr, sizeof(attr), "mp4a.40.2");
347 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
348 snprintf(attr, sizeof(attr), "ac-3");
349 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
350 snprintf(attr, sizeof(attr), "ec-3");
354 // Don't write the same attribute multiple times
355 if (!av_stristr(vs->codec_attr, attr)) {
356 snprintf(vs->codec_attr + codec_strlen,
357 sizeof(vs->codec_attr) - codec_strlen,
358 "%s%s", codec_strlen ? "," : "", attr);
363 vs->codec_attr[0] = '\0';
364 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
368 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
377 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
384 if (c == '%' && *(p+1) == '%') // %%
386 else if (c == '%' && *(p+1) == placeholder) {
387 av_bprintf(&buf, "%s", datastring);
394 if (addchar_count > 0) {
395 av_bprint_append_data(&buf, p, addchar_count);
399 if (!av_bprint_is_complete(&buf)) {
400 av_bprint_finalize(&buf, NULL);
401 return AVERROR(ENOMEM);
403 if ((ret = av_bprint_finalize(&buf, s)) < 0)
408 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
412 int nd, addchar_count;
417 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
424 if (c == '%' && *(p+1) == '%') // %%
426 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
429 while (av_isdigit(*(p + addchar_count))) {
430 nd = nd * 10 + *(p + addchar_count) - '0';
434 if (*(p + addchar_count) == placeholder) {
435 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
436 p += (addchar_count + 1);
444 av_bprint_append_data(&buf, p, addchar_count);
447 if (!av_bprint_is_complete(&buf)) {
448 av_bprint_finalize(&buf, NULL);
449 return AVERROR(ENOMEM);
451 if ((ret = av_bprint_finalize(&buf, s)) < 0)
456 static void write_styp(AVIOContext *pb)
459 ffio_wfourcc(pb, "styp");
460 ffio_wfourcc(pb, "msdh");
461 avio_wb32(pb, 0); /* minor */
462 ffio_wfourcc(pb, "msdh");
463 ffio_wfourcc(pb, "msix");
466 static int flush_dynbuf(VariantStream *vs, int *range_length)
468 AVFormatContext *ctx = vs->avf;
471 return AVERROR(EINVAL);
475 av_write_frame(ctx, NULL);
478 *range_length = avio_close_dyn_buf(ctx->pb, &vs->temp_buffer);
480 avio_write(vs->out, vs->temp_buffer, *range_length);
484 return avio_open_dyn_buf(&ctx->pb);
487 static void reflush_dynbuf(VariantStream *vs, int *range_length)
490 avio_write(vs->out, vs->temp_buffer, *range_length);
494 #define SEPARATOR '\\'
496 #define SEPARATOR '/'
499 static int hls_delete_file(HLSContext *hls, AVFormatContext *avf,
500 const char *path, const char *proto)
502 if (hls->method || (proto && !av_strcasecmp(proto, "http"))) {
503 AVDictionary *opt = NULL;
504 AVIOContext *out = NULL;
506 av_dict_set(&opt, "method", "DELETE", 0);
507 ret = avf->io_open(avf, &out, path, AVIO_FLAG_WRITE, &opt);
510 return hls->ignore_io_errors ? 1 : ret;
511 ff_format_io_close(avf, &out);
512 } else if (unlink(path) < 0) {
513 av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n",
514 path, strerror(errno));
519 static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls,
523 HLSSegment *segment, *previous_segment = NULL;
524 float playlist_duration = 0.0f;
528 const char *dirname = NULL;
529 char *dirname_r = NULL;
530 char *dirname_repl = NULL;
531 const char *vtt_dirname = NULL;
532 char *vtt_dirname_r = NULL;
533 const char *proto = NULL;
535 av_bprint_init(&path, 0, AV_BPRINT_SIZE_UNLIMITED);
537 segment = vs->segments;
539 playlist_duration += segment->duration;
540 segment = segment->next;
543 segment = vs->old_segments;
546 playlist_duration -= segment->duration;
547 previous_segment = segment;
548 segment = previous_segment->next;
550 if (playlist_duration <= -previous_segment->duration) {
551 previous_segment->next = NULL;
554 if (segment_cnt >= hls->hls_delete_threshold) {
555 previous_segment->next = NULL;
560 if (segment && !hls->use_localtime_mkdir) {
561 dirname_r = hls->segment_filename ? av_strdup(hls->segment_filename): av_strdup(vs->avf->url);
562 dirname = av_dirname(dirname_r);
565 /* if %v is present in the file's directory
566 * all segment belongs to the same variant, so do it only once before the loop*/
567 if (dirname && av_stristr(dirname, "%v")) {
569 if (replace_int_data_in_filename(&dirname_repl, dirname, 'v', segment->var_stream_idx) < 1) {
570 ret = AVERROR(EINVAL);
574 if (replace_str_data_in_filename(&dirname_repl, dirname, 'v', vs->varname) < 1) {
575 ret = AVERROR(EINVAL);
580 dirname = dirname_repl;
584 av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n",
586 if (!hls->use_localtime_mkdir) // segment->filename contains basename only
587 av_bprintf(&path, "%s%c", dirname, SEPARATOR);
588 av_bprintf(&path, "%s", segment->filename);
590 if (!av_bprint_is_complete(&path)) {
591 ret = AVERROR(ENOMEM);
595 proto = avio_find_protocol_name(s->url);
596 if (ret = hls_delete_file(hls, vs->avf, path.str, proto))
599 if ((segment->sub_filename[0] != '\0')) {
600 vtt_dirname_r = av_strdup(vs->vtt_avf->url);
601 vtt_dirname = av_dirname(vtt_dirname_r);
603 av_bprint_clear(&path);
604 av_bprintf(&path, "%s%c%s", vtt_dirname, SEPARATOR,
605 segment->sub_filename);
606 av_freep(&vtt_dirname_r);
608 if (!av_bprint_is_complete(&path)) {
609 ret = AVERROR(ENOMEM);
613 if (ret = hls_delete_file(hls, vs->vtt_avf, path.str, proto))
616 av_bprint_clear(&path);
617 previous_segment = segment;
618 segment = previous_segment->next;
619 av_freep(&previous_segment);
623 av_bprint_finalize(&path, NULL);
624 av_freep(&dirname_r);
625 av_freep(&dirname_repl);
630 static int randomize(uint8_t *buf, int len)
633 gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM);
636 if (RAND_bytes(buf, len))
639 return AVERROR(ENOSYS);
641 return AVERROR(EINVAL);
644 static int do_encrypt(AVFormatContext *s, VariantStream *vs)
646 HLSContext *hls = s->priv_data;
650 uint8_t key[KEYSIZE];
651 char * key_basename_source = (hls->master_m3u8_url) ? hls->master_m3u8_url : s->url;
653 len = strlen(key_basename_source) + 4 + 1;
654 hls->key_basename = av_mallocz(len);
655 if (!hls->key_basename)
656 return AVERROR(ENOMEM);
658 av_strlcpy(hls->key_basename, key_basename_source, len);
659 av_strlcat(hls->key_basename, ".key", len);
662 av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file));
663 av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri));
665 av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file));
666 av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri));
669 if (!*hls->iv_string) {
670 uint8_t iv[16] = { 0 };
674 AV_WB64(iv + 8, vs->sequence);
676 memcpy(iv, hls->iv, sizeof(iv));
678 ff_data_to_hex(buf, iv, sizeof(iv), 0);
680 memcpy(hls->iv_string, buf, sizeof(hls->iv_string));
683 if (!*hls->key_uri) {
684 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
685 return AVERROR(EINVAL);
688 if (!*hls->key_file) {
689 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
690 return AVERROR(EINVAL);
693 if (!*hls->key_string) {
694 AVDictionary *options = NULL;
696 if ((ret = randomize(key, sizeof(key))) < 0) {
697 av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n");
701 memcpy(key, hls->key, sizeof(key));
704 ff_data_to_hex(hls->key_string, key, sizeof(key), 0);
705 set_http_options(s, &options, hls);
706 ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, &options);
707 av_dict_free(&options);
710 avio_seek(pb, 0, SEEK_CUR);
711 avio_write(pb, key, KEYSIZE);
718 static int hls_encryption_start(AVFormatContext *s, VariantStream *vs)
720 HLSContext *hls = s->priv_data;
723 uint8_t key[KEYSIZE];
724 AVDictionary *options = NULL;
726 set_http_options(s, &options, hls);
727 ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, &options);
728 av_dict_free(&options);
730 av_log(hls, AV_LOG_ERROR,
731 "error opening key info file %s\n", hls->key_info_file);
735 ff_get_line(pb, vs->key_uri, sizeof(vs->key_uri));
736 vs->key_uri[strcspn(vs->key_uri, "\r\n")] = '\0';
738 ff_get_line(pb, vs->key_file, sizeof(vs->key_file));
739 vs->key_file[strcspn(vs->key_file, "\r\n")] = '\0';
741 ff_get_line(pb, vs->iv_string, sizeof(vs->iv_string));
742 vs->iv_string[strcspn(vs->iv_string, "\r\n")] = '\0';
744 ff_format_io_close(s, &pb);
747 av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n");
748 return AVERROR(EINVAL);
751 if (!*vs->key_file) {
752 av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n");
753 return AVERROR(EINVAL);
756 set_http_options(s, &options, hls);
757 ret = s->io_open(s, &pb, vs->key_file, AVIO_FLAG_READ, &options);
758 av_dict_free(&options);
760 av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", vs->key_file);
764 ret = avio_read(pb, key, sizeof(key));
765 ff_format_io_close(s, &pb);
766 if (ret != sizeof(key)) {
767 av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", vs->key_file);
768 if (ret >= 0 || ret == AVERROR_EOF)
769 ret = AVERROR(EINVAL);
772 ff_data_to_hex(vs->key_string, key, sizeof(key), 0);
777 static int hls_mux_init(AVFormatContext *s, VariantStream *vs)
779 AVDictionary *options = NULL;
780 HLSContext *hls = s->priv_data;
782 AVFormatContext *vtt_oc = NULL;
783 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
784 int remaining_options;
787 ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL);
792 oc->url = av_strdup("");
794 return AVERROR(ENOMEM);
796 oc->interrupt_callback = s->interrupt_callback;
797 oc->max_delay = s->max_delay;
798 oc->opaque = s->opaque;
799 oc->io_open = s->io_open;
800 oc->io_close = s->io_close;
801 oc->strict_std_compliance = s->strict_std_compliance;
802 av_dict_copy(&oc->metadata, s->metadata, 0);
804 if (vs->vtt_oformat) {
805 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
808 vtt_oc = vs->vtt_avf;
809 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
812 for (i = 0; i < vs->nb_streams; i++) {
814 AVFormatContext *loc;
815 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
820 if (!(st = avformat_new_stream(loc, NULL)))
821 return AVERROR(ENOMEM);
822 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
823 if (!oc->oformat->codec_tag ||
824 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
825 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
826 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
828 st->codecpar->codec_tag = 0;
831 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
832 st->time_base = vs->streams[i]->time_base;
833 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
839 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
840 if (hls->http_persistent > 0) {
841 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
842 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
844 if (hls->max_seg_size > 0) {
845 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
846 return AVERROR_PATCHWELCOME;
850 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
853 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
854 set_http_options(s, &options, hls);
855 if (byterange_mode) {
856 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
858 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
860 av_dict_free(&options);
863 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
867 av_dict_copy(&options, hls->format_options, 0);
868 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
869 av_dict_set(&options, "fflags", "-autobsf", 0);
870 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
872 /* We only require one PAT/PMT per segment. */
874 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
875 av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
876 av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
878 ret = avformat_init_output(oc, &options);
879 remaining_options = av_dict_count(options);
880 av_dict_free(&options);
883 if (remaining_options) {
884 av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
885 return AVERROR(EINVAL);
891 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
894 if (!av_strcasecmp(segment->filename,filename))
896 segment = segment->next;
898 return (HLSSegment *) NULL;
901 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
902 VariantStream *vs, HLSSegment *en,
903 double duration, int64_t pos, int64_t size)
905 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
906 strlen(vs->current_segment_final_filename_fmt)) {
907 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
909 return AVERROR(ENOMEM);
911 ff_format_set_url(vs->avf, new_url);
912 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
913 char *filename = NULL;
914 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
915 av_log(hls, AV_LOG_ERROR,
916 "Invalid second level segment filename template '%s', "
917 "you can try to remove second_level_segment_size flag\n",
920 return AVERROR(EINVAL);
922 ff_format_set_url(vs->avf, filename);
924 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
925 char *filename = NULL;
926 if (replace_int_data_in_filename(&filename, vs->avf->url,
927 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
928 av_log(hls, AV_LOG_ERROR,
929 "Invalid second level segment filename template '%s', "
930 "you can try to remove second_level_segment_time flag\n",
933 return AVERROR(EINVAL);
935 ff_format_set_url(vs->avf, filename);
941 static int sls_flag_check_duration_size_index(HLSContext *hls)
945 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
946 av_log(hls, AV_LOG_ERROR,
947 "second_level_segment_duration hls_flag requires strftime to be true\n");
948 ret = AVERROR(EINVAL);
950 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
951 av_log(hls, AV_LOG_ERROR,
952 "second_level_segment_size hls_flag requires strfime to be true\n");
953 ret = AVERROR(EINVAL);
955 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
956 av_log(hls, AV_LOG_ERROR,
957 "second_level_segment_index hls_flag requires strftime to be true\n");
958 ret = AVERROR(EINVAL);
964 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
966 const char *proto = avio_find_protocol_name(vs->basename);
967 int segment_renaming_ok = proto && !strcmp(proto, "file");
970 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
971 av_log(hls, AV_LOG_ERROR,
972 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
973 ret = AVERROR(EINVAL);
975 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
976 av_log(hls, AV_LOG_ERROR,
977 "second_level_segment_size hls_flag works only with file protocol segment names\n");
978 ret = AVERROR(EINVAL);
984 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
985 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
986 strlen(vs->current_segment_final_filename_fmt)) {
987 ff_rename(old_filename, vs->avf->url, hls);
991 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
993 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
994 char *filename = NULL;
995 if (replace_int_data_in_filename(&filename,
997 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
999 oc->url, 'd', vs->sequence) < 1) {
1001 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1002 "you can try to remove second_level_segment_index flag\n",
1004 av_freep(&filename);
1005 return AVERROR(EINVAL);
1007 ff_format_set_url(oc, filename);
1009 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1010 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1011 sizeof(vs->current_segment_final_filename_fmt));
1012 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1013 char *filename = NULL;
1014 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1015 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1016 "you can try to remove second_level_segment_size flag\n",
1018 av_freep(&filename);
1019 return AVERROR(EINVAL);
1021 ff_format_set_url(oc, filename);
1023 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1024 char *filename = NULL;
1025 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1026 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1027 "you can try to remove second_level_segment_time flag\n",
1029 av_freep(&filename);
1030 return AVERROR(EINVAL);
1032 ff_format_set_url(oc, filename);
1038 /* Create a new segment and append it to the segment list */
1039 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1040 VariantStream *vs, double duration, int64_t pos,
1043 HLSSegment *en = av_malloc(sizeof(*en));
1044 const char *filename;
1045 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1049 return AVERROR(ENOMEM);
1051 en->var_stream_idx = vs->var_stream_idx;
1052 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1058 filename = av_basename(vs->avf->url);
1060 if (hls->use_localtime_mkdir) {
1061 filename = vs->avf->url;
1063 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1064 && !byterange_mode) {
1065 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1067 av_strlcpy(en->filename, filename, sizeof(en->filename));
1069 if (vs->has_subtitle)
1070 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1072 en->sub_filename[0] = '\0';
1074 en->duration = duration;
1077 en->keyframe_pos = vs->video_keyframe_pos;
1078 en->keyframe_size = vs->video_keyframe_size;
1082 if (vs->discontinuity) {
1084 vs->discontinuity = 0;
1087 if (hls->key_info_file || hls->encrypt) {
1088 av_strlcpy(en->key_uri, vs->key_uri, sizeof(en->key_uri));
1089 av_strlcpy(en->iv_string, vs->iv_string, sizeof(en->iv_string));
1095 vs->last_segment->next = en;
1097 vs->last_segment = en;
1099 // EVENT or VOD playlists imply sliding window cannot be used
1100 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1101 hls->max_nb_segments = 0;
1103 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1105 vs->initial_prog_date_time += en->duration;
1106 vs->segments = en->next;
1107 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1109 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1111 !(hls->flags & HLS_SINGLE_FILE)) {
1113 en->next = vs->old_segments;
1114 vs->old_segments = en;
1115 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1122 if (hls->max_seg_size > 0) {
1130 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1132 HLSContext *hls = s->priv_data;
1134 int ret = 0, is_segment = 0;
1135 int64_t new_start_pos;
1136 char line[MAX_URL_SIZE];
1140 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1141 &s->interrupt_callback, NULL,
1142 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1145 ff_get_chomp_line(in, line, sizeof(line));
1146 if (strcmp(line, "#EXTM3U")) {
1147 ret = AVERROR_INVALIDDATA;
1151 vs->discontinuity = 0;
1152 while (!avio_feof(in)) {
1153 ff_get_chomp_line(in, line, sizeof(line));
1154 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1155 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1156 if (tmp_sequence < vs->sequence)
1157 av_log(hls, AV_LOG_VERBOSE,
1158 "Found playlist sequence number was smaller """
1159 "than specified start sequence number: %"PRId64" < %"PRId64", "
1160 "omitting\n", tmp_sequence, hls->start_sequence);
1162 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1163 vs->sequence = tmp_sequence;
1165 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1167 vs->discontinuity = 1;
1168 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1170 vs->duration = atof(ptr);
1171 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1172 ptr = av_stristr(line, "URI=\"");
1174 ptr += strlen("URI=\"");
1175 end = av_stristr(ptr, ",");
1177 av_strlcpy(vs->key_uri, ptr, end - ptr);
1179 av_strlcpy(vs->key_uri, ptr, sizeof(vs->key_uri));
1183 ptr = av_stristr(line, "IV=0x");
1185 ptr += strlen("IV=0x");
1186 end = av_stristr(ptr, ",");
1188 av_strlcpy(vs->iv_string, ptr, end - ptr);
1190 av_strlcpy(vs->iv_string, ptr, sizeof(vs->iv_string));
1194 } else if (av_strstart(line, "#", NULL)) {
1196 } else if (line[0]) {
1198 char *new_file = av_strdup(line);
1200 ret = AVERROR(ENOMEM);
1203 ff_format_set_url(vs->avf, new_file);
1205 new_start_pos = avio_tell(vs->avf->pb);
1206 vs->size = new_start_pos - vs->start_pos;
1207 vs->initial_prog_date_time -= vs->duration; // this is a previously existing segment
1208 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1211 vs->start_pos = new_start_pos;
1221 static void hls_free_segments(HLSSegment *p)
1232 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1234 size_t len = strlen(oc->url);
1235 char *final_filename = av_strdup(oc->url);
1238 if (!final_filename)
1239 return AVERROR(ENOMEM);
1240 final_filename[len-4] = '\0';
1241 ret = ff_rename(oc->url, final_filename, s);
1242 oc->url[len-4] = '\0';
1243 av_freep(&final_filename);
1247 static const char* get_relative_url(const char *master_url, const char *media_url)
1249 const char *p = strrchr(master_url, '/');
1250 size_t base_len = 0;
1252 if (!p) p = strrchr(master_url, '\\');
1255 base_len = p - master_url;
1256 if (av_strncasecmp(master_url, media_url, base_len)) {
1257 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1264 return media_url + base_len + 1;
1267 static int64_t get_stream_bit_rate(AVStream *stream)
1269 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1271 AV_PKT_DATA_CPB_PROPERTIES,
1275 if (stream->codecpar->bit_rate)
1276 return stream->codecpar->bit_rate;
1278 return props->max_bitrate;
1283 static int create_master_playlist(AVFormatContext *s,
1284 VariantStream * const input_vs)
1286 HLSContext *hls = s->priv_data;
1287 VariantStream *vs, *temp_vs;
1288 AVStream *vid_st, *aud_st;
1289 AVDictionary *options = NULL;
1292 const char *m3u8_rel_name = NULL;
1293 const char *vtt_m3u8_rel_name = NULL;
1294 const char *ccgroup;
1295 const char *sgroup = NULL;
1296 ClosedCaptionsStream *ccs;
1297 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1298 int is_file_proto = proto && !strcmp(proto, "file");
1299 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1300 char temp_filename[MAX_URL_SIZE];
1302 input_vs->m3u8_created = 1;
1303 if (!hls->master_m3u8_created) {
1304 /* For the first time, wait until all the media playlists are created */
1305 for (i = 0; i < hls->nb_varstreams; i++)
1306 if (!hls->var_streams[i].m3u8_created)
1309 /* Keep publishing the master playlist at the configured rate */
1310 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1311 input_vs->number % hls->master_publish_rate)
1315 set_http_options(s, &options, hls);
1316 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1317 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1318 av_dict_free(&options);
1320 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1325 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1327 for (i = 0; i < hls->nb_ccstreams; i++) {
1328 ccs = &(hls->cc_streams[i]);
1329 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1330 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1331 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1333 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1334 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1337 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1338 for (i = 0; i < hls->nb_varstreams; i++) {
1339 vs = &(hls->var_streams[i]);
1341 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1344 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1345 if (!m3u8_rel_name) {
1346 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1350 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1353 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1354 for (i = 0; i < hls->nb_varstreams; i++) {
1355 vs = &(hls->var_streams[i]);
1357 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1358 if (!m3u8_rel_name) {
1359 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1365 for (j = 0; j < vs->nb_streams; j++) {
1366 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1367 vid_st = vs->streams[j];
1368 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1369 aud_st = vs->streams[j];
1372 if (!vid_st && !aud_st) {
1373 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1378 * Traverse through the list of audio only rendition streams and find
1379 * the rendition which has highest bitrate in the same audio group
1382 for (j = 0; j < hls->nb_varstreams; j++) {
1383 temp_vs = &(hls->var_streams[j]);
1384 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1386 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1388 aud_st = temp_vs->streams[0];
1389 if (temp_vs->streams[0]->codecpar->bit_rate >
1390 aud_st->codecpar->bit_rate)
1391 aud_st = temp_vs->streams[0];
1398 bandwidth += get_stream_bit_rate(vid_st);
1400 bandwidth += get_stream_bit_rate(aud_st);
1401 bandwidth += bandwidth / 10;
1404 if (vid_st && vs->ccgroup) {
1405 /* check if this group name is available in the cc map string */
1406 for (j = 0; j < hls->nb_ccstreams; j++) {
1407 ccs = &(hls->cc_streams[j]);
1408 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1409 ccgroup = vs->ccgroup;
1413 if (j == hls->nb_ccstreams)
1414 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1418 if (vid_st && vs->sgroup) {
1419 sgroup = vs->sgroup;
1420 vtt_m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->vtt_m3u8_name);
1421 if (!vtt_m3u8_rel_name) {
1422 av_log(s, AV_LOG_WARNING, "Unable to find relative subtitle URL\n");
1426 ff_hls_write_subtitle_rendition(hls->m3u8_out, sgroup, vtt_m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1429 if (!hls->has_default_key || !hls->has_video_m3u8) {
1430 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1431 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1434 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1435 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1441 hls->master_m3u8_created = 1;
1442 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1444 ff_rename(temp_filename, hls->master_m3u8_url, s);
1449 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1451 HLSContext *hls = s->priv_data;
1453 int target_duration = 0;
1455 char temp_filename[MAX_URL_SIZE];
1456 char temp_vtt_filename[MAX_URL_SIZE];
1457 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1458 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1459 int is_file_proto = proto && !strcmp(proto, "file");
1460 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1461 static unsigned warned_non_file;
1462 char *key_uri = NULL;
1463 char *iv_string = NULL;
1464 AVDictionary *options = NULL;
1465 double prog_date_time = vs->initial_prog_date_time;
1466 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1467 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1470 if (byterange_mode) {
1475 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1479 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1483 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1484 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1486 set_http_options(s, &options, hls);
1487 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1488 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1489 if (hls->ignore_io_errors)
1494 for (en = vs->segments; en; en = en->next) {
1495 if (target_duration <= en->duration)
1496 target_duration = lrint(en->duration);
1499 vs->discontinuity_set = 0;
1500 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1501 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1503 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0) {
1504 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1505 vs->discontinuity_set = 1;
1507 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1508 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1510 for (en = vs->segments; en; en = en->next) {
1511 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1512 av_strcasecmp(en->iv_string, iv_string))) {
1513 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1515 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1516 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1517 key_uri = en->key_uri;
1518 iv_string = en->iv_string;
1521 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1522 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1523 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1526 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1527 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1528 en->size, en->pos, hls->baseurl,
1529 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1531 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1535 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1536 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1538 if (vs->vtt_m3u8_name) {
1539 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1540 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1541 if (hls->ignore_io_errors)
1545 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1546 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1547 for (en = vs->segments; en; en = en->next) {
1548 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1549 en->duration, 0, en->size, en->pos,
1550 hls->baseurl, en->sub_filename, NULL, 0, 0, 0);
1552 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1557 ff_hls_write_end_list(hls->sub_m3u8_out);
1562 av_dict_free(&options);
1563 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1567 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1568 if (use_temp_file) {
1569 ff_rename(temp_filename, vs->m3u8_name, s);
1570 if (vs->vtt_m3u8_name)
1571 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1573 if (ret >= 0 && hls->master_pl_name)
1574 if (create_master_playlist(s, vs) < 0)
1575 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1580 static int hls_start(AVFormatContext *s, VariantStream *vs)
1582 HLSContext *c = s->priv_data;
1583 AVFormatContext *oc = vs->avf;
1584 AVFormatContext *vtt_oc = vs->vtt_avf;
1585 AVDictionary *options = NULL;
1586 const char *proto = NULL;
1587 int use_temp_file = 0;
1588 char iv_string[KEYSIZE*2 + 1];
1591 if (c->flags & HLS_SINGLE_FILE) {
1592 char *new_name = av_strdup(vs->basename);
1594 return AVERROR(ENOMEM);
1595 ff_format_set_url(oc, new_name);
1596 if (vs->vtt_basename) {
1597 new_name = av_strdup(vs->vtt_basename);
1599 return AVERROR(ENOMEM);
1600 ff_format_set_url(vtt_oc, new_name);
1602 } else if (c->max_seg_size > 0) {
1603 char *filename = NULL;
1604 if (replace_int_data_in_filename(&filename,
1606 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1608 vs->basename, 'd', vs->sequence) < 1) {
1610 av_freep(&filename);
1611 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1612 return AVERROR(EINVAL);
1614 ff_format_set_url(oc, filename);
1616 if (c->use_localtime) {
1618 struct tm *tm, tmpbuf;
1619 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1620 char *buf = av_mallocz(bufsize);
1622 return AVERROR(ENOMEM);
1624 tm = localtime_r(&now0, &tmpbuf);
1625 ff_format_set_url(oc, buf);
1626 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1627 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1628 return AVERROR(EINVAL);
1631 err = sls_flag_use_localtime_filename(oc, c, vs);
1633 return AVERROR(ENOMEM);
1636 if (c->use_localtime_mkdir) {
1638 char *fn_copy = av_strdup(oc->url);
1640 return AVERROR(ENOMEM);
1641 dir = av_dirname(fn_copy);
1642 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1643 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1645 return AVERROR(errno);
1650 char *filename = NULL;
1651 if (replace_int_data_in_filename(&filename,
1653 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1655 vs->basename, 'd', vs->sequence) < 1) {
1657 av_freep(&filename);
1658 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1659 return AVERROR(EINVAL);
1661 ff_format_set_url(oc, filename);
1663 if (vs->vtt_basename) {
1664 char *filename = NULL;
1665 if (replace_int_data_in_filename(&filename,
1667 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1669 vs->vtt_basename, 'd', vs->sequence) < 1) {
1671 av_freep(&filename);
1672 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1673 return AVERROR(EINVAL);
1675 ff_format_set_url(vtt_oc, filename);
1679 proto = avio_find_protocol_name(oc->url);
1680 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1682 if (use_temp_file) {
1683 char *new_name = av_asprintf("%s.tmp", oc->url);
1685 return AVERROR(ENOMEM);
1686 ff_format_set_url(oc, new_name);
1689 if (c->key_info_file || c->encrypt) {
1690 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1691 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1692 return AVERROR_PATCHWELCOME;
1695 if (c->key_info_file && c->encrypt) {
1696 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1697 " ignoring -hls_enc\n");
1700 if (!vs->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1701 if (c->key_info_file) {
1702 if ((err = hls_encryption_start(s, vs)) < 0)
1705 if (!c->encrypt_started) {
1706 if ((err = do_encrypt(s, vs)) < 0)
1708 c->encrypt_started = 1;
1710 av_strlcpy(vs->key_uri, c->key_uri, sizeof(vs->key_uri));
1711 av_strlcpy(vs->key_string, c->key_string, sizeof(vs->key_string));
1712 av_strlcpy(vs->iv_string, c->iv_string, sizeof(vs->iv_string));
1714 vs->encrypt_started = 1;
1716 err = av_strlcpy(iv_string, vs->iv_string, sizeof(iv_string));
1718 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1719 memset(vs->iv_string, 0, sizeof(vs->iv_string));
1720 memcpy(vs->iv_string, iv_string, sizeof(iv_string));
1723 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1724 if (oc->oformat->priv_class && oc->priv_data) {
1725 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1727 if (c->flags & HLS_SINGLE_FILE) {
1728 if (c->key_info_file || c->encrypt) {
1729 av_dict_set(&options, "encryption_key", vs->key_string, 0);
1730 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
1732 /* Write temp file with cryption content */
1733 av_freep(&vs->basename_tmp);
1734 vs->basename_tmp = av_asprintf("crypto:%s.tmp", oc->url);
1736 /* append temp file content into single file */
1737 av_freep(&vs->basename);
1738 vs->basename = av_asprintf("%s", oc->url);
1740 vs->basename_tmp = vs->basename;
1742 set_http_options(s, &options, c);
1743 if (!vs->out_single_file)
1744 if ((err = hlsenc_io_open(s, &vs->out_single_file, vs->basename, &options)) < 0) {
1745 if (c->ignore_io_errors)
1750 if ((err = hlsenc_io_open(s, &vs->out, vs->basename_tmp, &options)) < 0) {
1751 if (c->ignore_io_errors)
1758 if (vs->vtt_basename) {
1759 set_http_options(s, &options, c);
1760 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1761 if (c->ignore_io_errors)
1766 av_dict_free(&options);
1768 if (vs->vtt_basename) {
1769 err = avformat_write_header(vtt_oc,NULL);
1776 av_dict_free(&options);
1781 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1784 time_t t = time(NULL);
1785 struct tm *p, tmbuf;
1786 HLSContext *hls = s->priv_data;
1788 p = localtime_r(&t, &tmbuf);
1789 // no %s support when strftime returned error or left format string unchanged
1790 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1791 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1792 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1794 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1797 static int append_postfix(char *name, int name_buf_len, int i)
1800 char extension[10] = {'\0'};
1802 p = strrchr(name, '.');
1804 av_strlcpy(extension, p, sizeof(extension));
1808 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1810 if (strlen(extension))
1811 av_strlcat(name, extension, name_buf_len);
1816 static int validate_name(int nb_vs, const char *fn)
1818 const char *filename, *subdir_name;
1819 char *fn_dup = NULL;
1823 return AVERROR(EINVAL);
1825 fn_dup = av_strdup(fn);
1827 return AVERROR(ENOMEM);
1828 filename = av_basename(fn);
1829 subdir_name = av_dirname(fn_dup);
1831 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1832 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1833 "either in the filename or in the sub-directory name of file %s\n", fn);
1834 ret = AVERROR(EINVAL);
1838 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1839 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1840 "in the sub-directory name of file %s, but only in one of them\n", fn);
1841 ret = AVERROR(EINVAL);
1850 static int format_name(const char *buf, char **s, int index, const char *varname)
1852 const char *proto, *dir;
1853 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1856 orig_buf_dup = av_strdup(buf);
1858 return AVERROR(ENOMEM);
1860 if (!av_stristr(buf, "%v")) {
1866 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1867 ret = AVERROR(EINVAL);
1871 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1872 ret = AVERROR(EINVAL);
1877 proto = avio_find_protocol_name(orig_buf_dup);
1878 dir = av_dirname(orig_buf_dup);
1880 /* if %v is present in the file's directory, create sub-directory */
1881 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1882 mod_buf_dup = av_strdup(*s);
1883 dir = av_dirname(mod_buf_dup);
1884 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1885 ret = AVERROR(errno);
1891 av_freep(&orig_buf_dup);
1892 av_freep(&mod_buf_dup);
1896 static int get_nth_codec_stream_index(AVFormatContext *s,
1897 enum AVMediaType codec_type,
1900 unsigned int stream_index, cnt;
1901 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1904 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1905 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1907 if (cnt == stream_id)
1908 return stream_index;
1914 static int parse_variant_stream_mapstring(AVFormatContext *s)
1916 HLSContext *hls = s->priv_data;
1918 int stream_index, i, j;
1919 enum AVMediaType codec_type;
1920 int nb_varstreams = 0, nb_streams;
1921 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1925 * Expected format for var_stream_map string is as below:
1927 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1928 * This string specifies how to group the audio, video and subtitle streams
1929 * into different variant streams. The variant stream groups are separated
1932 * a:, v:, s: are keys to specify audio, video and subtitle streams
1933 * respectively. Allowed values are 0 to 9 digits (limited just based on
1936 * agroup: is key to specify audio group. A string can be given as value.
1937 * sgroup: is key to specify subtitle group. A string can be given as value.
1939 p = av_strdup(hls->var_stream_map);
1941 return AVERROR(ENOMEM);
1944 while (av_strtok(q, " \t", &saveptr1)) {
1950 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
1951 if (!hls->var_streams)
1952 return AVERROR(ENOMEM);
1953 hls->nb_varstreams = nb_varstreams;
1955 p = hls->var_stream_map;
1957 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1960 if (nb_varstreams < hls->nb_varstreams) {
1961 vs = &(hls->var_streams[nb_varstreams]);
1962 vs->var_stream_idx = nb_varstreams;
1966 return AVERROR(EINVAL);
1970 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1971 !av_strncasecmp(q, "s:", 2))
1978 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1980 return AVERROR(ENOMEM);
1983 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1987 if (av_strstart(keyval, "language:", &val)) {
1990 } else if (av_strstart(keyval, "default:", &val)) {
1991 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
1992 (!av_strncasecmp(val, "1", strlen("1"))));
1993 hls->has_default_key = 1;
1995 } else if (av_strstart(keyval, "name:", &val)) {
1998 } else if (av_strstart(keyval, "agroup:", &val)) {
2001 } else if (av_strstart(keyval, "sgroup:", &val)) {
2004 } else if (av_strstart(keyval, "ccgroup:", &val)) {
2007 } else if (av_strstart(keyval, "v:", &val)) {
2008 codec_type = AVMEDIA_TYPE_VIDEO;
2009 hls->has_video_m3u8 = 1;
2010 } else if (av_strstart(keyval, "a:", &val)) {
2011 codec_type = AVMEDIA_TYPE_AUDIO;
2012 } else if (av_strstart(keyval, "s:", &val)) {
2013 codec_type = AVMEDIA_TYPE_SUBTITLE;
2015 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2016 return AVERROR(EINVAL);
2019 num = strtoll(val, &end, 10);
2020 if (!av_isdigit(*val) || *end != '\0') {
2021 av_log(s, AV_LOG_ERROR, "Invalid stream number: '%s'\n", val);
2022 return AVERROR(EINVAL);
2024 stream_index = get_nth_codec_stream_index(s, codec_type, num);
2026 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
2027 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
2028 if (vs->streams[i] == s->streams[stream_index]) {
2029 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
2030 "variant definition #%d\n", nb_varstreams - 1);
2031 return AVERROR(EINVAL);
2034 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
2035 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
2036 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
2037 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
2038 "in two different variant definitions #%d and #%d\n",
2039 j, nb_varstreams - 1);
2040 return AVERROR(EINVAL);
2044 vs->streams[nb_streams++] = s->streams[stream_index];
2046 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2047 return AVERROR(EINVAL);
2051 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2052 hls->nb_varstreams);
2057 static int parse_cc_stream_mapstring(AVFormatContext *s)
2059 HLSContext *hls = s->priv_data;
2060 int nb_ccstreams = 0;
2061 char *p, *q, *ccstr, *keyval;
2062 char *saveptr1 = NULL, *saveptr2 = NULL;
2064 ClosedCaptionsStream *ccs;
2066 p = av_strdup(hls->cc_stream_map);
2068 return AVERROR(ENOMEM);
2071 while (av_strtok(q, " \t", &saveptr1)) {
2077 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2078 if (!hls->cc_streams)
2079 return AVERROR(ENOMEM);
2080 hls->nb_ccstreams = nb_ccstreams;
2082 p = hls->cc_stream_map;
2084 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2087 if (nb_ccstreams < hls->nb_ccstreams)
2088 ccs = &(hls->cc_streams[nb_ccstreams++]);
2090 return AVERROR(EINVAL);
2092 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2095 if (av_strstart(keyval, "ccgroup:", &val)) {
2097 } else if (av_strstart(keyval, "instreamid:", &val)) {
2098 ccs->instreamid = val;
2099 } else if (av_strstart(keyval, "language:", &val)) {
2100 ccs->language = val;
2102 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2103 return AVERROR(EINVAL);
2107 if (!ccs->ccgroup || !ccs->instreamid) {
2108 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2109 return AVERROR(EINVAL);
2112 if (av_strstart(ccs->instreamid, "CC", &val)) {
2113 if (atoi(val) < 1 || atoi(val) > 4) {
2114 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2115 atoi(val), ccs->instreamid);
2116 return AVERROR(EINVAL);
2118 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2119 if (atoi(val) < 1 || atoi(val) > 63) {
2120 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2121 atoi(val), ccs->instreamid);
2122 return AVERROR(EINVAL);
2125 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2127 return AVERROR(EINVAL);
2134 static int update_variant_stream_info(AVFormatContext *s)
2136 HLSContext *hls = s->priv_data;
2140 if (hls->cc_stream_map) {
2141 ret = parse_cc_stream_mapstring(s);
2146 if (hls->var_stream_map) {
2147 return parse_variant_stream_mapstring(s);
2149 //By default, a single variant stream with all the codec streams is created
2150 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2151 if (!hls->var_streams)
2152 return AVERROR(ENOMEM);
2153 hls->nb_varstreams = 1;
2155 hls->var_streams[0].var_stream_idx = 0;
2156 hls->var_streams[0].nb_streams = s->nb_streams;
2157 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2158 hls->var_streams[0].nb_streams);
2159 if (!hls->var_streams[0].streams)
2160 return AVERROR(ENOMEM);
2162 //by default, the first available ccgroup is mapped to the variant stream
2163 if (hls->nb_ccstreams)
2164 hls->var_streams[0].ccgroup = hls->cc_streams[0].ccgroup;
2166 for (i = 0; i < s->nb_streams; i++)
2167 hls->var_streams[0].streams[i] = s->streams[i];
2172 static int update_master_pl_info(AVFormatContext *s)
2174 HLSContext *hls = s->priv_data;
2176 char *fn1= NULL, *fn2 = NULL;
2179 fn1 = av_strdup(s->url);
2181 return AVERROR(ENOMEM);
2182 dir = av_dirname(fn1);
2185 * if output file's directory has %v, variants are created in sub-directories
2186 * then master is created at the sub-directories level
2188 if (dir && av_stristr(av_basename(dir), "%v")) {
2189 fn2 = av_strdup(dir);
2191 ret = AVERROR(ENOMEM);
2194 dir = av_dirname(fn2);
2197 if (dir && strcmp(dir, "."))
2198 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2200 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2202 if (!hls->master_m3u8_url) {
2203 ret = AVERROR(ENOMEM);
2214 static int hls_write_header(AVFormatContext *s)
2216 HLSContext *hls = s->priv_data;
2218 VariantStream *vs = NULL;
2220 for (i = 0; i < hls->nb_varstreams; i++) {
2221 vs = &hls->var_streams[i];
2223 ret = avformat_write_header(vs->avf, NULL);
2226 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2227 for (j = 0; j < vs->nb_streams; j++) {
2229 AVStream *outer_st = vs->streams[j];
2231 if (hls->max_seg_size > 0) {
2232 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2233 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2234 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2235 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2236 outer_st->codecpar->bit_rate, hls->max_seg_size);
2240 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2241 inner_st = vs->avf->streams[j];
2242 else if (vs->vtt_avf)
2243 inner_st = vs->vtt_avf->streams[0];
2245 /* We have a subtitle stream, when the user does not want one */
2249 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2250 write_codec_attr(outer_st, vs);
2253 /* Update the Codec Attr string for the mapped audio groups */
2254 if (vs->has_video && vs->agroup) {
2255 for (j = 0; j < hls->nb_varstreams; j++) {
2256 VariantStream *vs_agroup = &(hls->var_streams[j]);
2257 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2258 vs_agroup->agroup &&
2259 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2260 write_codec_attr(vs_agroup->streams[0], vs);
2269 static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
2271 HLSContext *hls = s->priv_data;
2272 AVDictionary *options = NULL;
2275 set_http_options(s, &options, hls);
2276 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
2277 av_dict_free(&options);
2280 avio_write(vs->out, vs->init_buffer, vs->init_range_length);
2281 hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename);
2286 static int64_t append_single_file(AVFormatContext *s, VariantStream *vs)
2289 int64_t read_byte = 0;
2290 int64_t total_size = 0;
2291 char *filename = NULL;
2293 AVFormatContext *oc = vs->avf;
2295 hlsenc_io_close(s, &vs->out, vs->basename_tmp);
2296 filename = av_asprintf("%s.tmp", oc->url);
2297 ret = s->io_open(s, &vs->out, filename, AVIO_FLAG_READ, NULL);
2304 memset(buf, 0, sizeof(BUFSIZE));
2305 read_byte = avio_read(vs->out, buf, BUFSIZE);
2306 avio_write(vs->out_single_file, buf, read_byte);
2307 if (read_byte > 0) {
2308 total_size += read_byte;
2311 } while (read_byte > 0);
2313 hlsenc_io_close(s, &vs->out, filename);
2318 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2320 HLSContext *hls = s->priv_data;
2321 AVFormatContext *oc = NULL;
2322 AVStream *st = s->streams[pkt->stream_index];
2323 int64_t end_pts = 0;
2325 int ret = 0, can_split = 1, i, j;
2326 int stream_index = 0;
2327 int range_length = 0;
2328 const char *proto = NULL;
2329 int use_temp_file = 0;
2330 VariantStream *vs = NULL;
2331 char *old_filename = NULL;
2333 for (i = 0; i < hls->nb_varstreams; i++) {
2334 vs = &hls->var_streams[i];
2335 for (j = 0; j < vs->nb_streams; j++) {
2336 if (vs->streams[j] == st) {
2337 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2353 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2354 return AVERROR(ENOMEM);
2357 end_pts = hls->recording_time * vs->number;
2359 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2360 /* reset end_pts, hls->recording_time at end of the init hls list */
2361 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2362 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries) * (hls->time * AV_TIME_BASE);
2363 hls->recording_time = hls->time * AV_TIME_BASE;
2364 end_pts = init_list_dur + after_init_list_dur ;
2367 if (vs->start_pts == AV_NOPTS_VALUE) {
2368 vs->start_pts = pkt->pts;
2369 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2370 vs->start_pts_from_audio = 1;
2372 if (vs->start_pts_from_audio && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && vs->start_pts > pkt->pts) {
2373 vs->start_pts = pkt->pts;
2374 vs->start_pts_from_audio = 0;
2377 if (vs->has_video) {
2378 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2379 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2380 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2382 if (pkt->pts == AV_NOPTS_VALUE)
2383 is_ref_pkt = can_split = 0;
2386 if (vs->end_pts == AV_NOPTS_VALUE)
2387 vs->end_pts = pkt->pts;
2388 if (vs->new_start) {
2390 vs->duration = (double)(pkt->pts - vs->end_pts)
2391 * st->time_base.num / st->time_base.den;
2392 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2394 if (pkt->duration) {
2395 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2397 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2398 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2404 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2405 end_pts, AV_TIME_BASE_Q) >= 0) {
2406 int64_t new_start_pos;
2407 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2409 av_write_frame(oc, NULL); /* Flush any buffered data */
2410 new_start_pos = avio_tell(oc->pb);
2411 vs->size = new_start_pos - vs->start_pos;
2413 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2414 if (!vs->init_range_length) {
2415 range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer);
2416 if (range_length <= 0)
2417 return AVERROR(EINVAL);
2418 avio_write(vs->out, vs->init_buffer, range_length);
2419 if (!hls->resend_init_file)
2420 av_freep(&vs->init_buffer);
2421 vs->init_range_length = range_length;
2422 avio_open_dyn_buf(&oc->pb);
2423 vs->packets_written = 0;
2424 vs->start_pos = range_length;
2425 if (!byterange_mode) {
2426 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2430 if (!byterange_mode) {
2432 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2436 if (hls->flags & HLS_SINGLE_FILE) {
2437 ret = flush_dynbuf(vs, &range_length);
2438 av_freep(&vs->temp_buffer);
2442 vs->size = range_length;
2443 if (hls->key_info_file || hls->encrypt)
2444 vs->size = append_single_file(s, vs);
2447 proto = avio_find_protocol_name(oc->url);
2448 use_temp_file = proto && !strcmp(proto, "file")
2449 && (hls->flags & HLS_TEMP_FILE);
2452 if ((hls->max_seg_size > 0 && (vs->size + vs->start_pos >= hls->max_seg_size)) || !byterange_mode) {
2453 AVDictionary *options = NULL;
2454 char *filename = NULL;
2455 if (hls->key_info_file || hls->encrypt) {
2456 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2457 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2458 filename = av_asprintf("crypto:%s", oc->url);
2460 filename = av_asprintf("%s", oc->url);
2463 av_dict_free(&options);
2464 return AVERROR(ENOMEM);
2467 // look to rename the asset name
2469 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2471 set_http_options(s, &options, hls);
2473 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2475 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2476 "Failed to open file '%s'\n", filename);
2477 av_freep(&filename);
2478 av_dict_free(&options);
2479 return hls->ignore_io_errors ? 0 : ret;
2481 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2482 write_styp(vs->out);
2484 ret = flush_dynbuf(vs, &range_length);
2486 av_freep(&filename);
2487 av_dict_free(&options);
2490 ret = hlsenc_io_close(s, &vs->out, filename);
2492 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2493 " will retry with a new http session.\n");
2494 ff_format_io_close(s, &vs->out);
2495 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2496 reflush_dynbuf(vs, &range_length);
2497 ret = hlsenc_io_close(s, &vs->out, filename);
2499 av_dict_free(&options);
2500 av_freep(&vs->temp_buffer);
2501 av_freep(&filename);
2505 hls_rename_temp_file(s, oc);
2508 old_filename = av_strdup(oc->url);
2509 if (!old_filename) {
2510 return AVERROR(ENOMEM);
2513 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2514 double cur_duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2515 ret = hls_append_segment(s, hls, vs, cur_duration, vs->start_pos, vs->size);
2516 vs->end_pts = pkt->pts;
2519 av_freep(&old_filename);
2524 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2525 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2526 if ((ret = hls_window(s, 0, vs)) < 0) {
2527 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2528 ff_format_io_close(s, &vs->out);
2529 if ((ret = hls_window(s, 0, vs)) < 0) {
2530 av_freep(&old_filename);
2536 if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) {
2537 ret = hls_init_file_resend(s, vs);
2539 av_freep(&old_filename);
2544 if (hls->flags & HLS_SINGLE_FILE) {
2545 vs->start_pos += vs->size;
2546 if (hls->key_info_file || hls->encrypt)
2547 ret = hls_start(s, vs);
2548 } else if (hls->max_seg_size > 0) {
2549 if (vs->size + vs->start_pos >= hls->max_seg_size) {
2551 sls_flag_file_rename(hls, vs, old_filename);
2552 ret = hls_start(s, vs);
2554 /* When split segment by byte, the duration is short than hls_time,
2555 * so it is not enough one segment duration as hls_time, */
2557 vs->start_pos = new_start_pos;
2560 vs->start_pos = new_start_pos;
2561 sls_flag_file_rename(hls, vs, old_filename);
2562 ret = hls_start(s, vs);
2565 av_freep(&old_filename);
2573 vs->packets_written++;
2575 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2576 vs->video_keyframe_size += pkt->size;
2577 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->flags & AV_PKT_FLAG_KEY)) {
2578 vs->video_keyframe_size = avio_tell(oc->pb);
2580 vs->video_keyframe_pos = avio_tell(vs->out);
2582 if (hls->ignore_io_errors)
2589 static void hls_deinit(AVFormatContext *s)
2591 HLSContext *hls = s->priv_data;
2593 VariantStream *vs = NULL;
2595 for (i = 0; i < hls->nb_varstreams; i++) {
2596 vs = &hls->var_streams[i];
2598 av_freep(&vs->basename);
2599 av_freep(&vs->base_output_dirname);
2600 av_freep(&vs->fmp4_init_filename);
2601 av_freep(&vs->vtt_basename);
2602 av_freep(&vs->vtt_m3u8_name);
2604 avformat_free_context(vs->vtt_avf);
2605 avformat_free_context(vs->avf);
2606 if (hls->resend_init_file)
2607 av_freep(&vs->init_buffer);
2608 hls_free_segments(vs->segments);
2609 hls_free_segments(vs->old_segments);
2610 av_freep(&vs->m3u8_name);
2611 av_freep(&vs->streams);
2614 ff_format_io_close(s, &hls->m3u8_out);
2615 ff_format_io_close(s, &hls->sub_m3u8_out);
2616 av_freep(&hls->key_basename);
2617 av_freep(&hls->var_streams);
2618 av_freep(&hls->cc_streams);
2619 av_freep(&hls->master_m3u8_url);
2622 static int hls_write_trailer(struct AVFormatContext *s)
2624 HLSContext *hls = s->priv_data;
2625 AVFormatContext *oc = NULL;
2626 AVFormatContext *vtt_oc = NULL;
2627 char *old_filename = NULL;
2628 const char *proto = NULL;
2629 int use_temp_file = 0;
2632 VariantStream *vs = NULL;
2633 AVDictionary *options = NULL;
2634 int range_length, byterange_mode;
2636 for (i = 0; i < hls->nb_varstreams; i++) {
2637 char *filename = NULL;
2638 vs = &hls->var_streams[i];
2640 vtt_oc = vs->vtt_avf;
2641 old_filename = av_strdup(oc->url);
2644 if (!old_filename) {
2645 return AVERROR(ENOMEM);
2647 if (hls->key_info_file || hls->encrypt) {
2648 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2649 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2650 filename = av_asprintf("crypto:%s", oc->url);
2652 filename = av_asprintf("%s", oc->url);
2655 av_freep(&old_filename);
2656 return AVERROR(ENOMEM);
2659 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2660 int range_length = 0;
2661 if (!vs->init_range_length) {
2662 uint8_t *buffer = NULL;
2663 av_write_frame(oc, NULL); /* Flush any buffered data */
2665 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2666 avio_write(vs->out, buffer, range_length);
2668 vs->init_range_length = range_length;
2669 avio_open_dyn_buf(&oc->pb);
2670 vs->packets_written = 0;
2671 vs->start_pos = range_length;
2672 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2673 if (!byterange_mode) {
2674 ff_format_io_close(s, &vs->out);
2675 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2679 if (!(hls->flags & HLS_SINGLE_FILE)) {
2680 set_http_options(s, &options, hls);
2681 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2683 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2686 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2687 write_styp(vs->out);
2689 ret = flush_dynbuf(vs, &range_length);
2693 vs->size = range_length;
2694 ret = hlsenc_io_close(s, &vs->out, filename);
2696 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2697 ff_format_io_close(s, &vs->out);
2698 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2700 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2703 reflush_dynbuf(vs, &range_length);
2704 ret = hlsenc_io_close(s, &vs->out, filename);
2706 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2708 if (hls->flags & HLS_SINGLE_FILE) {
2709 if (hls->key_info_file || hls->encrypt) {
2710 vs->size = append_single_file(s, vs);
2712 hlsenc_io_close(s, &vs->out_single_file, vs->basename);
2715 av_freep(&vs->temp_buffer);
2716 av_dict_free(&options);
2717 av_freep(&filename);
2718 av_write_trailer(oc);
2720 proto = avio_find_protocol_name(oc->url);
2721 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2724 // rename that segment from .tmp to the real one
2725 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2726 hls_rename_temp_file(s, oc);
2727 av_freep(&old_filename);
2728 old_filename = av_strdup(oc->url);
2730 if (!old_filename) {
2731 return AVERROR(ENOMEM);
2735 /* after av_write_trailer, then duration + 1 duration per packet */
2736 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2738 sls_flag_file_rename(hls, vs, old_filename);
2742 av_write_trailer(vtt_oc);
2743 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2744 ff_format_io_close(s, &vtt_oc->pb);
2746 ret = hls_window(s, 1, vs);
2748 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2749 ff_format_io_close(s, &vs->out);
2750 hls_window(s, 1, vs);
2752 ffio_free_dyn_buf(&oc->pb);
2754 av_free(old_filename);
2761 static int hls_init(AVFormatContext *s)
2766 HLSContext *hls = s->priv_data;
2767 const char *pattern;
2768 VariantStream *vs = NULL;
2769 const char *vtt_pattern = hls->flags & HLS_SINGLE_FILE ? ".vtt" : "%d.vtt";
2771 int http_base_proto = ff_is_http_proto(s->url);
2772 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2773 double initial_program_date_time = av_gettime() / 1000000.0;
2775 if (hls->use_localtime) {
2776 pattern = get_default_pattern_localtime_fmt(s);
2778 pattern = hls->segment_type == SEGMENT_TYPE_FMP4 ? "%d.m4s" : "%d.ts";
2779 if (hls->flags & HLS_SINGLE_FILE)
2783 hls->has_default_key = 0;
2784 hls->has_video_m3u8 = 0;
2785 ret = update_variant_stream_info(s);
2787 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2792 if (!hls->method && http_base_proto) {
2793 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2796 ret = validate_name(hls->nb_varstreams, s->url);
2800 if (hls->segment_filename) {
2801 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2806 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2807 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2812 if (hls->subtitle_filename) {
2813 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2818 if (hls->master_pl_name) {
2819 ret = update_master_pl_info(s);
2821 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2827 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2828 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) ||
2829 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2830 time_t t = time(NULL);
2831 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) {
2832 hls->start_sequence = av_gettime();
2833 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2834 hls->start_sequence = (int64_t)t;
2835 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2837 struct tm *p, tmbuf;
2838 if (!(p = localtime_r(&t, &tmbuf)))
2839 return AVERROR(errno);
2840 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2841 return AVERROR(ENOMEM);
2842 hls->start_sequence = strtoll(b, NULL, 10);
2844 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2847 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2849 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2850 // Independent segments cannot be guaranteed when splitting by time
2851 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2852 av_log(s, AV_LOG_WARNING,
2853 "'split_by_time' and 'independent_segments' cannot be "
2854 "enabled together. Disabling 'independent_segments' flag\n");
2857 for (i = 0; i < hls->nb_varstreams; i++) {
2858 vs = &hls->var_streams[i];
2860 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2864 vs->sequence = hls->start_sequence;
2865 vs->start_pts = AV_NOPTS_VALUE;
2866 vs->end_pts = AV_NOPTS_VALUE;
2867 vs->current_segment_final_filename_fmt[0] = '\0';
2868 vs->initial_prog_date_time = initial_program_date_time;
2870 for (j = 0; j < vs->nb_streams; j++) {
2871 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2872 /* Get one video stream to reference for split segments
2873 * so use the first video stream index. */
2874 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2875 vs->reference_stream_index = vs->streams[j]->index;
2877 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2880 if (vs->has_video > 1)
2881 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2882 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2883 vs->oformat = av_guess_format("mp4", NULL, NULL);
2885 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2888 return AVERROR_MUXER_NOT_FOUND;
2890 if (hls->segment_filename) {
2891 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2895 p = strrchr(vs->m3u8_name, '.');
2899 vs->basename = av_asprintf("%s%s", vs->m3u8_name, pattern);
2901 return AVERROR(ENOMEM);
2907 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2908 if (hls->nb_varstreams > 1)
2909 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2910 if (hls->flags & HLS_SINGLE_FILE) {
2911 vs->fmp4_init_filename = av_strdup(vs->basename);
2912 if (!vs->fmp4_init_filename)
2913 return AVERROR(ENOMEM);
2915 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2916 if (!vs->fmp4_init_filename)
2917 return AVERROR(ENOMEM);
2918 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2919 fmp4_init_filename_len);
2920 if (hls->nb_varstreams > 1) {
2921 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2922 av_freep(&vs->fmp4_init_filename);
2923 ret = format_name(hls->fmp4_init_filename,
2924 &vs->fmp4_init_filename, i, vs->varname);
2926 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2932 p = strrchr(vs->m3u8_name, '/');
2936 vs->base_output_dirname = av_asprintf("%s%s", vs->m3u8_name,
2937 vs->fmp4_init_filename);
2940 vs->base_output_dirname = av_strdup(vs->fmp4_init_filename);
2942 if (!vs->base_output_dirname)
2943 return AVERROR(ENOMEM);
2947 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
2951 if (vs->has_subtitle) {
2952 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2953 if (!vs->vtt_oformat)
2954 return AVERROR_MUXER_NOT_FOUND;
2956 p = strrchr(vs->m3u8_name, '.');
2960 vs->vtt_basename = av_asprintf("%s%s", vs->m3u8_name, vtt_pattern);
2961 if (!vs->vtt_basename)
2962 return AVERROR(ENOMEM);
2964 if (hls->subtitle_filename) {
2965 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
2969 vs->vtt_m3u8_name = av_asprintf("%s_vtt.m3u8", vs->m3u8_name);
2970 if (!vs->vtt_m3u8_name)
2971 return AVERROR(ENOMEM);
2977 if ((ret = hls_mux_init(s, vs)) < 0)
2980 if (hls->flags & HLS_APPEND_LIST) {
2981 parse_playlist(s, vs->m3u8_name, vs);
2982 vs->discontinuity = 1;
2983 if (hls->init_time > 0) {
2984 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
2985 " hls_init_time value will have no effect\n");
2987 hls->recording_time = hls->time * AV_TIME_BASE;
2991 if ((ret = hls_start(s, vs)) < 0)
2999 #define OFFSET(x) offsetof(HLSContext, x)
3000 #define E AV_OPT_FLAG_ENCODING_PARAM
3001 static const AVOption options[] = {
3002 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
3003 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
3004 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
3005 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
3006 {"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},
3007 {"hls_ts_options","set hls mpegts list of options for the container format used for hls", OFFSET(format_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E},
3008 {"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},
3010 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3012 {"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},
3013 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3014 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3015 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3016 {"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},
3017 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
3018 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3019 {"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},
3020 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3021 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3022 {"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"},
3023 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3024 {"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"},
3025 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3026 {"hls_fmp4_init_resend", "resend fragment mp4 init file after refresh m3u8 every time", OFFSET(resend_init_file), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3027 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3028 {"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"},
3029 {"temp_file", "write segment and playlist to temporary file and rename when complete", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_TEMP_FILE }, 0, UINT_MAX, E, "flags"},
3030 {"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"},
3031 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3032 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3033 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3034 {"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"},
3035 {"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"},
3036 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3037 {"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"},
3038 {"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"},
3039 {"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"},
3040 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3041 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3042 {"iframes_only", "add EXT-X-I-FRAMES-ONLY, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_I_FRAMES_ONLY }, 0, UINT_MAX, E, "flags"},
3043 #if FF_API_HLS_USE_LOCALTIME
3044 {"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 },
3046 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3047 #if FF_API_HLS_USE_LOCALTIME
3048 {"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 },
3050 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3051 {"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" },
3052 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3053 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3054 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3055 {"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_LAST-1, E, "start_sequence_source_type" },
3056 {"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" },
3057 {"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" },
3058 {"epoch_us", "microseconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" },
3059 {"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" },
3060 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3061 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3062 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3063 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3064 {"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},
3065 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3066 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3067 {"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 },
3068 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3072 static const AVClass hls_class = {
3073 .class_name = "hls muxer",
3074 .item_name = av_default_item_name,
3076 .version = LIBAVUTIL_VERSION_INT,
3080 AVOutputFormat ff_hls_muxer = {
3082 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3083 .extensions = "m3u8",
3084 .priv_data_size = sizeof(HLSContext),
3085 .audio_codec = AV_CODEC_ID_AAC,
3086 .video_codec = AV_CODEC_ID_H264,
3087 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3088 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3090 .write_header = hls_write_header,
3091 .write_packet = hls_write_packet,
3092 .write_trailer = hls_write_trailer,
3093 .deinit = hls_deinit,
3094 .priv_class = &hls_class,