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 POSTFIX_PATTERN "_%d"
74 typedef struct HLSSegment {
75 char filename[MAX_URL_SIZE];
76 char sub_filename[MAX_URL_SIZE];
77 double duration; /* in seconds */
82 int64_t keyframe_size;
83 unsigned var_stream_idx;
85 char key_uri[LINE_BUFFER_SIZE + 1];
86 char iv_string[KEYSIZE*2 + 1];
88 struct HLSSegment *next;
91 typedef enum HLSFlags {
92 // Generate a single media file and use byte ranges in the playlist.
93 HLS_SINGLE_FILE = (1 << 0),
94 HLS_DELETE_SEGMENTS = (1 << 1),
95 HLS_ROUND_DURATIONS = (1 << 2),
96 HLS_DISCONT_START = (1 << 3),
97 HLS_OMIT_ENDLIST = (1 << 4),
98 HLS_SPLIT_BY_TIME = (1 << 5),
99 HLS_APPEND_LIST = (1 << 6),
100 HLS_PROGRAM_DATE_TIME = (1 << 7),
101 HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d
102 HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t
103 HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s
104 HLS_TEMP_FILE = (1 << 11),
105 HLS_PERIODIC_REKEY = (1 << 12),
106 HLS_INDEPENDENT_SEGMENTS = (1 << 13),
107 HLS_I_FRAMES_ONLY = (1 << 14),
115 typedef struct VariantStream {
116 unsigned var_stream_idx;
119 ff_const59 AVOutputFormat *oformat;
120 ff_const59 AVOutputFormat *vtt_oformat;
123 int init_range_length;
124 uint8_t *temp_buffer;
125 uint8_t *init_buffer;
127 AVFormatContext *avf;
128 AVFormatContext *vtt_avf;
133 int start_pts_from_audio;
134 double dpp; // duration per packet
137 int64_t video_lastpos;
138 int64_t video_keyframe_pos;
139 int64_t video_keyframe_size;
140 double duration; // last segment duration computed so far, in seconds
141 int64_t start_pos; // last segment starting position
142 int64_t size; // last segment size
144 int discontinuity_set;
146 int reference_stream_index;
148 HLSSegment *segments;
149 HLSSegment *last_segment;
150 HLSSegment *old_segments;
157 double initial_prog_date_time;
158 char current_segment_final_filename_fmt[MAX_URL_SIZE]; // when renaming segments
160 char *fmp4_init_filename;
161 char *base_output_dirname;
165 char key_file[LINE_BUFFER_SIZE + 1];
166 char key_uri[LINE_BUFFER_SIZE + 1];
167 char key_string[KEYSIZE*2 + 1];
168 char iv_string[KEYSIZE*2 + 1];
171 char codec_attr[128];
172 CodecAttributeStatus attr_status;
173 unsigned int nb_streams;
174 int m3u8_created; /* status of media play-list creation */
175 int is_default; /* default status of audio group */
176 char *language; /* audio lauguage name */
177 char *agroup; /* audio group name */
178 char *sgroup; /* subtitle group name */
179 char *ccgroup; /* closed caption group name */
181 char *varname; // variant name
184 typedef struct ClosedCaptionsStream {
185 char *ccgroup; /* closed caption group name */
186 char *instreamid; /* closed captions INSTREAM-ID */
187 char *language; /* closed captions langauge */
188 } ClosedCaptionsStream;
190 typedef struct HLSContext {
191 const AVClass *class; // Class for private options.
192 int64_t start_sequence;
193 uint32_t start_sequence_source_type; // enum StartSequenceSourceType
195 float time; // Set by a private option.
196 float init_time; // Set by a private option.
197 int max_nb_segments; // Set by a private option.
198 int hls_delete_threshold; // Set by a private option.
200 int wrap; // Set by a private option.
202 uint32_t flags; // enum HLSFlags
203 uint32_t pl_type; // enum PlaylistType
204 char *segment_filename;
205 char *fmp4_init_filename;
207 int resend_init_file; ///< resend init file into disk after refresh m3u8
209 int use_localtime; ///< flag to expand filename with localtime
210 int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename
212 int64_t recording_time;
213 int64_t max_seg_size; // every segment file max size
216 char *vtt_format_options_str;
217 char *subtitle_filename;
218 AVDictionary *format_options;
228 char key_file[LINE_BUFFER_SIZE + 1];
229 char key_uri[LINE_BUFFER_SIZE + 1];
230 char key_string[KEYSIZE*2 + 1];
231 char iv_string[KEYSIZE*2 + 1];
232 AVDictionary *vtt_format_options;
237 VariantStream *var_streams;
238 unsigned int nb_varstreams;
239 ClosedCaptionsStream *cc_streams;
240 unsigned int nb_ccstreams;
242 int master_m3u8_created; /* status of master play-list creation */
243 char *master_m3u8_url; /* URL of the master m3u8 file */
244 int version; /* HLS version */
245 char *var_stream_map; /* user specified variant stream map string */
246 char *cc_stream_map; /* user specified closed caption streams map string */
247 char *master_pl_name;
248 unsigned int master_publish_rate;
250 AVIOContext *m3u8_out;
251 AVIOContext *sub_m3u8_out;
253 int ignore_io_errors;
255 int has_default_key; /* has DEFAULT field of var_stream_map */
256 int has_video_m3u8; /* has video stream m3u8 list */
259 static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
260 AVDictionary **options)
262 HLSContext *hls = s->priv_data;
263 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
264 int err = AVERROR_MUXER_NOT_FOUND;
265 if (!*pb || !http_base_proto || !hls->http_persistent) {
266 err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
267 #if CONFIG_HTTP_PROTOCOL
269 URLContext *http_url_context = ffio_geturlcontext(*pb);
270 av_assert0(http_url_context);
271 err = ff_http_do_new_request(http_url_context, filename);
273 ff_format_io_close(s, pb);
280 static int hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename)
282 HLSContext *hls = s->priv_data;
283 int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
287 if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) {
288 ff_format_io_close(s, pb);
289 #if CONFIG_HTTP_PROTOCOL
291 URLContext *http_url_context = ffio_geturlcontext(*pb);
292 av_assert0(http_url_context);
294 ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
295 ret = ff_http_get_shutdown_status(http_url_context);
301 static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c)
303 int http_base_proto = ff_is_http_proto(s->url);
306 av_dict_set(options, "method", c->method, 0);
307 } else if (http_base_proto) {
308 av_dict_set(options, "method", "PUT", 0);
311 av_dict_set(options, "user_agent", c->user_agent, 0);
312 if (c->http_persistent)
313 av_dict_set_int(options, "multiple_requests", 1, 0);
315 av_dict_set_int(options, "timeout", c->timeout, 0);
317 av_dict_set(options, "headers", c->headers, 0);
320 static void write_codec_attr(AVStream *st, VariantStream *vs)
322 int codec_strlen = strlen(vs->codec_attr);
325 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
327 if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN)
330 if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
331 uint8_t *data = st->codecpar->extradata;
332 if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) {
333 snprintf(attr, sizeof(attr),
334 "avc1.%02x%02x%02x", data[5], data[6], data[7]);
338 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) {
339 snprintf(attr, sizeof(attr), "mp4a.40.33");
340 } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) {
341 snprintf(attr, sizeof(attr), "mp4a.40.34");
342 } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
343 /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */
344 snprintf(attr, sizeof(attr), "mp4a.40.2");
345 } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
346 snprintf(attr, sizeof(attr), "ac-3");
347 } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) {
348 snprintf(attr, sizeof(attr), "ec-3");
352 // Don't write the same attribute multiple times
353 if (!av_stristr(vs->codec_attr, attr)) {
354 snprintf(vs->codec_attr + codec_strlen,
355 sizeof(vs->codec_attr) - codec_strlen,
356 "%s%s", codec_strlen ? "," : "", attr);
361 vs->codec_attr[0] = '\0';
362 vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN;
366 static int replace_str_data_in_filename(char **s, const char *filename, char placeholder, const char *datastring)
375 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
382 if (c == '%' && *(p+1) == '%') // %%
384 else if (c == '%' && *(p+1) == placeholder) {
385 av_bprintf(&buf, "%s", datastring);
392 if (addchar_count > 0) {
393 av_bprint_append_data(&buf, p, addchar_count);
397 if (!av_bprint_is_complete(&buf)) {
398 av_bprint_finalize(&buf, NULL);
401 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
407 static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number)
412 int nd, addchar_count;
416 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
423 if (c == '%' && *(p+1) == '%') // %%
425 else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) {
428 while (av_isdigit(*(p + addchar_count))) {
429 nd = nd * 10 + *(p + addchar_count) - '0';
433 if (*(p + addchar_count) == placeholder) {
434 av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number);
435 p += (addchar_count + 1);
443 av_bprint_append_data(&buf, p, addchar_count);
446 if (!av_bprint_is_complete(&buf)) {
447 av_bprint_finalize(&buf, NULL);
450 if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename)
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 char *dirname = NULL;
529 char *dirname_r = NULL;
530 char *dirname_repl = NULL;
531 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 = (char*)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 = (char*)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->oformat = vs->oformat;
797 oc->interrupt_callback = s->interrupt_callback;
798 oc->max_delay = s->max_delay;
799 oc->opaque = s->opaque;
800 oc->io_open = s->io_open;
801 oc->io_close = s->io_close;
802 oc->strict_std_compliance = s->strict_std_compliance;
803 av_dict_copy(&oc->metadata, s->metadata, 0);
805 if (vs->vtt_oformat) {
806 ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL);
809 vtt_oc = vs->vtt_avf;
810 vtt_oc->oformat = vs->vtt_oformat;
811 av_dict_copy(&vtt_oc->metadata, s->metadata, 0);
814 for (i = 0; i < vs->nb_streams; i++) {
816 AVFormatContext *loc;
817 if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
822 if (!(st = avformat_new_stream(loc, NULL)))
823 return AVERROR(ENOMEM);
824 avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar);
825 if (!oc->oformat->codec_tag ||
826 av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id ||
827 av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) {
828 st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag;
830 st->codecpar->codec_tag = 0;
833 st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio;
834 st->time_base = vs->streams[i]->time_base;
835 av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0);
838 vs->packets_written = 1;
842 if (hls->segment_type == SEGMENT_TYPE_FMP4 && hls->max_seg_size > 0) {
843 if (hls->http_persistent > 0) {
844 //TODO: Support fragment fmp4 for http persistent in HLS muxer.
845 av_log(s, AV_LOG_WARNING, "http persistent mode is currently unsupported for fragment mp4 in the HLS muxer.\n");
847 if (hls->max_seg_size > 0) {
848 av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n");
849 return AVERROR_PATCHWELCOME;
853 vs->packets_written = 0;
854 vs->init_range_length = 0;
856 if ((ret = avio_open_dyn_buf(&oc->pb)) < 0)
859 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
860 set_http_options(s, &options, hls);
861 if (byterange_mode) {
862 ret = hlsenc_io_open(s, &vs->out, vs->basename, &options);
864 ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options);
866 av_dict_free(&options);
869 av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename);
873 av_dict_copy(&options, hls->format_options, 0);
874 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
875 av_dict_set(&options, "fflags", "-autobsf", 0);
876 av_dict_set(&options, "movflags", "+frag_custom+dash+delay_moov", AV_DICT_APPEND);
878 /* We only require one PAT/PMT per segment. */
880 snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1);
881 av_dict_set(&options, "sdt_period", period, AV_DICT_DONT_OVERWRITE);
882 av_dict_set(&options, "pat_period", period, AV_DICT_DONT_OVERWRITE);
884 ret = avformat_init_output(oc, &options);
885 remaining_options = av_dict_count(options);
886 av_dict_free(&options);
889 if (remaining_options) {
890 av_log(s, AV_LOG_ERROR, "Some of the provided format options are not recognized\n");
891 return AVERROR(EINVAL);
897 static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename)
900 if (!av_strcasecmp(segment->filename,filename))
902 segment = segment->next;
904 return (HLSSegment *) NULL;
907 static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls,
908 VariantStream *vs, HLSSegment *en,
909 double duration, int64_t pos, int64_t size)
911 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
912 strlen(vs->current_segment_final_filename_fmt)) {
913 char * new_url = av_strdup(vs->current_segment_final_filename_fmt);
915 return AVERROR(ENOMEM);
917 ff_format_set_url(vs->avf, new_url);
918 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
919 char *filename = NULL;
920 if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) {
921 av_log(hls, AV_LOG_ERROR,
922 "Invalid second level segment filename template '%s', "
923 "you can try to remove second_level_segment_size flag\n",
926 return AVERROR(EINVAL);
928 ff_format_set_url(vs->avf, filename);
930 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
931 char *filename = NULL;
932 if (replace_int_data_in_filename(&filename, vs->avf->url,
933 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) {
934 av_log(hls, AV_LOG_ERROR,
935 "Invalid second level segment filename template '%s', "
936 "you can try to remove second_level_segment_time flag\n",
939 return AVERROR(EINVAL);
941 ff_format_set_url(vs->avf, filename);
947 static int sls_flag_check_duration_size_index(HLSContext *hls)
951 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
952 av_log(hls, AV_LOG_ERROR,
953 "second_level_segment_duration hls_flag requires strftime to be true\n");
954 ret = AVERROR(EINVAL);
956 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
957 av_log(hls, AV_LOG_ERROR,
958 "second_level_segment_size hls_flag requires strfime to be true\n");
959 ret = AVERROR(EINVAL);
961 if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
962 av_log(hls, AV_LOG_ERROR,
963 "second_level_segment_index hls_flag requires strftime to be true\n");
964 ret = AVERROR(EINVAL);
970 static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs)
972 const char *proto = avio_find_protocol_name(vs->basename);
973 int segment_renaming_ok = proto && !strcmp(proto, "file");
976 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) {
977 av_log(hls, AV_LOG_ERROR,
978 "second_level_segment_duration hls_flag works only with file protocol segment names\n");
979 ret = AVERROR(EINVAL);
981 if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) {
982 av_log(hls, AV_LOG_ERROR,
983 "second_level_segment_size hls_flag works only with file protocol segment names\n");
984 ret = AVERROR(EINVAL);
990 static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) {
991 if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) &&
992 strlen(vs->current_segment_final_filename_fmt)) {
993 ff_rename(old_filename, vs->avf->url, hls);
997 static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs)
999 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) {
1000 char *filename = NULL;
1001 if (replace_int_data_in_filename(&filename,
1003 oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1005 oc->url, 'd', vs->sequence) < 1) {
1007 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1008 "you can try to remove second_level_segment_index flag\n",
1010 av_freep(&filename);
1011 return AVERROR(EINVAL);
1013 ff_format_set_url(oc, filename);
1015 if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) {
1016 av_strlcpy(vs->current_segment_final_filename_fmt, oc->url,
1017 sizeof(vs->current_segment_final_filename_fmt));
1018 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) {
1019 char *filename = NULL;
1020 if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) {
1021 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1022 "you can try to remove second_level_segment_size flag\n",
1024 av_freep(&filename);
1025 return AVERROR(EINVAL);
1027 ff_format_set_url(oc, filename);
1029 if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) {
1030 char *filename = NULL;
1031 if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) {
1032 av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', "
1033 "you can try to remove second_level_segment_time flag\n",
1035 av_freep(&filename);
1036 return AVERROR(EINVAL);
1038 ff_format_set_url(oc, filename);
1044 /* Create a new segment and append it to the segment list */
1045 static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls,
1046 VariantStream *vs, double duration, int64_t pos,
1049 HLSSegment *en = av_malloc(sizeof(*en));
1050 const char *filename;
1051 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1055 return AVERROR(ENOMEM);
1057 en->var_stream_idx = vs->var_stream_idx;
1058 ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size);
1064 filename = av_basename(vs->avf->url);
1066 if (hls->use_localtime_mkdir) {
1067 filename = vs->avf->url;
1069 if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename))
1070 && !byterange_mode) {
1071 av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename);
1073 av_strlcpy(en->filename, filename, sizeof(en->filename));
1075 if (vs->has_subtitle)
1076 av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename));
1078 en->sub_filename[0] = '\0';
1080 en->duration = duration;
1083 en->keyframe_pos = vs->video_keyframe_pos;
1084 en->keyframe_size = vs->video_keyframe_size;
1088 if (vs->discontinuity) {
1090 vs->discontinuity = 0;
1093 if (hls->key_info_file || hls->encrypt) {
1094 av_strlcpy(en->key_uri, vs->key_uri, sizeof(en->key_uri));
1095 av_strlcpy(en->iv_string, vs->iv_string, sizeof(en->iv_string));
1101 vs->last_segment->next = en;
1103 vs->last_segment = en;
1105 // EVENT or VOD playlists imply sliding window cannot be used
1106 if (hls->pl_type != PLAYLIST_TYPE_NONE)
1107 hls->max_nb_segments = 0;
1109 if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) {
1111 vs->initial_prog_date_time += en->duration;
1112 vs->segments = en->next;
1113 if (en && hls->flags & HLS_DELETE_SEGMENTS &&
1115 !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
1117 !(hls->flags & HLS_SINGLE_FILE)) {
1119 en->next = vs->old_segments;
1120 vs->old_segments = en;
1121 if ((ret = hls_delete_old_segments(s, hls, vs)) < 0)
1128 if (hls->max_seg_size > 0) {
1136 static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs)
1138 HLSContext *hls = s->priv_data;
1140 int ret = 0, is_segment = 0;
1141 int64_t new_start_pos;
1142 char line[MAX_URL_SIZE];
1146 if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ,
1147 &s->interrupt_callback, NULL,
1148 s->protocol_whitelist, s->protocol_blacklist)) < 0)
1151 ff_get_chomp_line(in, line, sizeof(line));
1152 if (strcmp(line, "#EXTM3U")) {
1153 ret = AVERROR_INVALIDDATA;
1157 vs->discontinuity = 0;
1158 while (!avio_feof(in)) {
1159 ff_get_chomp_line(in, line, sizeof(line));
1160 if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
1161 int64_t tmp_sequence = strtoll(ptr, NULL, 10);
1162 if (tmp_sequence < vs->sequence)
1163 av_log(hls, AV_LOG_VERBOSE,
1164 "Found playlist sequence number was smaller """
1165 "than specified start sequence number: %"PRId64" < %"PRId64", "
1166 "omitting\n", tmp_sequence, hls->start_sequence);
1168 av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence);
1169 vs->sequence = tmp_sequence;
1171 } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) {
1173 vs->discontinuity = 1;
1174 } else if (av_strstart(line, "#EXTINF:", &ptr)) {
1176 vs->duration = atof(ptr);
1177 } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) {
1178 ptr = av_stristr(line, "URI=\"");
1180 ptr += strlen("URI=\"");
1181 end = av_stristr(ptr, ",");
1183 av_strlcpy(vs->key_uri, ptr, end - ptr);
1185 av_strlcpy(vs->key_uri, ptr, sizeof(vs->key_uri));
1189 ptr = av_stristr(line, "IV=0x");
1191 ptr += strlen("IV=0x");
1192 end = av_stristr(ptr, ",");
1194 av_strlcpy(vs->iv_string, ptr, end - ptr);
1196 av_strlcpy(vs->iv_string, ptr, sizeof(vs->iv_string));
1200 } else if (av_strstart(line, "#", NULL)) {
1202 } else if (line[0]) {
1204 char *new_file = av_strdup(line);
1206 ret = AVERROR(ENOMEM);
1209 ff_format_set_url(vs->avf, new_file);
1211 new_start_pos = avio_tell(vs->avf->pb);
1212 vs->size = new_start_pos - vs->start_pos;
1213 vs->initial_prog_date_time -= vs->duration; // this is a previously existing segment
1214 ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size);
1217 vs->start_pos = new_start_pos;
1227 static void hls_free_segments(HLSSegment *p)
1238 static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc)
1240 size_t len = strlen(oc->url);
1241 char *final_filename = av_strdup(oc->url);
1244 if (!final_filename)
1245 return AVERROR(ENOMEM);
1246 final_filename[len-4] = '\0';
1247 ret = ff_rename(oc->url, final_filename, s);
1248 oc->url[len-4] = '\0';
1249 av_freep(&final_filename);
1253 static const char* get_relative_url(const char *master_url, const char *media_url)
1255 const char *p = strrchr(master_url, '/');
1256 size_t base_len = 0;
1258 if (!p) p = strrchr(master_url, '\\');
1261 base_len = p - master_url;
1262 if (av_strncasecmp(master_url, media_url, base_len)) {
1263 av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n");
1270 return media_url + base_len + 1;
1273 static int64_t get_stream_bit_rate(AVStream *stream)
1275 AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data(
1277 AV_PKT_DATA_CPB_PROPERTIES,
1281 if (stream->codecpar->bit_rate)
1282 return stream->codecpar->bit_rate;
1284 return props->max_bitrate;
1289 static int create_master_playlist(AVFormatContext *s,
1290 VariantStream * const input_vs)
1292 HLSContext *hls = s->priv_data;
1293 VariantStream *vs, *temp_vs;
1294 AVStream *vid_st, *aud_st;
1295 AVDictionary *options = NULL;
1298 const char *m3u8_rel_name = NULL;
1299 const char *vtt_m3u8_rel_name = NULL;
1301 char *sgroup = NULL;
1302 ClosedCaptionsStream *ccs;
1303 const char *proto = avio_find_protocol_name(hls->master_m3u8_url);
1304 int is_file_proto = proto && !strcmp(proto, "file");
1305 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || hls->master_publish_rate);
1306 char temp_filename[MAX_URL_SIZE];
1308 input_vs->m3u8_created = 1;
1309 if (!hls->master_m3u8_created) {
1310 /* For the first time, wait until all the media playlists are created */
1311 for (i = 0; i < hls->nb_varstreams; i++)
1312 if (!hls->var_streams[i].m3u8_created)
1315 /* Keep publishing the master playlist at the configured rate */
1316 if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate ||
1317 input_vs->number % hls->master_publish_rate)
1321 set_http_options(s, &options, hls);
1322 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", hls->master_m3u8_url);
1323 ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options);
1324 av_dict_free(&options);
1326 av_log(s, AV_LOG_ERROR, "Failed to open master play list file '%s'\n",
1331 ff_hls_write_playlist_version(hls->m3u8_out, hls->version);
1333 for (i = 0; i < hls->nb_ccstreams; i++) {
1334 ccs = &(hls->cc_streams[i]);
1335 avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS");
1336 avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup);
1337 avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid);
1339 avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language);
1340 avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid);
1343 /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/
1344 for (i = 0; i < hls->nb_varstreams; i++) {
1345 vs = &(hls->var_streams[i]);
1347 if (vs->has_video || vs->has_subtitle || !vs->agroup)
1350 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1351 if (!m3u8_rel_name) {
1352 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1356 ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1359 /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/
1360 for (i = 0; i < hls->nb_varstreams; i++) {
1361 vs = &(hls->var_streams[i]);
1363 m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->m3u8_name);
1364 if (!m3u8_rel_name) {
1365 av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n");
1371 for (j = 0; j < vs->nb_streams; j++) {
1372 if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
1373 vid_st = vs->streams[j];
1374 else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
1375 aud_st = vs->streams[j];
1378 if (!vid_st && !aud_st) {
1379 av_log(s, AV_LOG_WARNING, "Media stream not found\n");
1384 * Traverse through the list of audio only rendition streams and find
1385 * the rendition which has highest bitrate in the same audio group
1388 for (j = 0; j < hls->nb_varstreams; j++) {
1389 temp_vs = &(hls->var_streams[j]);
1390 if (!temp_vs->has_video && !temp_vs->has_subtitle &&
1392 !av_strcasecmp(temp_vs->agroup, vs->agroup)) {
1394 aud_st = temp_vs->streams[0];
1395 if (temp_vs->streams[0]->codecpar->bit_rate >
1396 aud_st->codecpar->bit_rate)
1397 aud_st = temp_vs->streams[0];
1404 bandwidth += get_stream_bit_rate(vid_st);
1406 bandwidth += get_stream_bit_rate(aud_st);
1407 bandwidth += bandwidth / 10;
1410 if (vid_st && vs->ccgroup) {
1411 /* check if this group name is available in the cc map string */
1412 for (j = 0; j < hls->nb_ccstreams; j++) {
1413 ccs = &(hls->cc_streams[j]);
1414 if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) {
1415 ccgroup = vs->ccgroup;
1419 if (j == hls->nb_ccstreams)
1420 av_log(s, AV_LOG_WARNING, "mapping ccgroup %s not found\n",
1424 if (vid_st && vs->sgroup) {
1425 sgroup = vs->sgroup;
1426 vtt_m3u8_rel_name = get_relative_url(hls->master_m3u8_url, vs->vtt_m3u8_name);
1427 if (!vtt_m3u8_rel_name) {
1428 av_log(s, AV_LOG_WARNING, "Unable to find relative subtitle URL\n");
1432 ff_hls_write_subtitle_rendition(hls->m3u8_out, sgroup, vtt_m3u8_rel_name, vs->language, i, hls->has_default_key ? vs->is_default : 1);
1435 if (!hls->has_default_key || !hls->has_video_m3u8) {
1436 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1437 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1440 ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name,
1441 aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup, sgroup);
1447 hls->master_m3u8_created = 1;
1448 hlsenc_io_close(s, &hls->m3u8_out, temp_filename);
1450 ff_rename(temp_filename, hls->master_m3u8_url, s);
1455 static int hls_window(AVFormatContext *s, int last, VariantStream *vs)
1457 HLSContext *hls = s->priv_data;
1459 int target_duration = 0;
1461 char temp_filename[MAX_URL_SIZE];
1462 char temp_vtt_filename[MAX_URL_SIZE];
1463 int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries);
1464 const char *proto = avio_find_protocol_name(vs->m3u8_name);
1465 int is_file_proto = proto && !strcmp(proto, "file");
1466 int use_temp_file = is_file_proto && ((hls->flags & HLS_TEMP_FILE) || !(hls->pl_type == PLAYLIST_TYPE_VOD));
1467 static unsigned warned_non_file;
1468 char *key_uri = NULL;
1469 char *iv_string = NULL;
1470 AVDictionary *options = NULL;
1471 double prog_date_time = vs->initial_prog_date_time;
1472 double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL;
1473 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
1476 if (byterange_mode) {
1481 if (hls->flags & HLS_INDEPENDENT_SEGMENTS) {
1485 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1489 if (!is_file_proto && (hls->flags & HLS_TEMP_FILE) && !warned_non_file++)
1490 av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n");
1492 set_http_options(s, &options, hls);
1493 snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name);
1494 if ((ret = hlsenc_io_open(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename, &options)) < 0) {
1495 if (hls->ignore_io_errors)
1500 for (en = vs->segments; en; en = en->next) {
1501 if (target_duration <= en->duration)
1502 target_duration = lrint(en->duration);
1505 vs->discontinuity_set = 0;
1506 ff_hls_write_playlist_header(byterange_mode ? hls->m3u8_out : vs->out, hls->version, hls->allowcache,
1507 target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
1509 if ((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ) {
1510 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-DISCONTINUITY\n");
1511 vs->discontinuity_set = 1;
1513 if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) {
1514 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-INDEPENDENT-SEGMENTS\n");
1516 for (en = vs->segments; en; en = en->next) {
1517 if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) ||
1518 av_strcasecmp(en->iv_string, iv_string))) {
1519 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri);
1521 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, ",IV=0x%s", en->iv_string);
1522 avio_printf(byterange_mode ? hls->m3u8_out : vs->out, "\n");
1523 key_uri = en->key_uri;
1524 iv_string = en->iv_string;
1527 if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) {
1528 ff_hls_write_init_file(byterange_mode ? hls->m3u8_out : vs->out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename,
1529 hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0);
1532 ret = ff_hls_write_file_entry(byterange_mode ? hls->m3u8_out : vs->out, en->discont, byterange_mode,
1533 en->duration, hls->flags & HLS_ROUND_DURATIONS,
1534 en->size, en->pos, vs->baseurl,
1535 en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
1537 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1541 if (last && (hls->flags & HLS_OMIT_ENDLIST)==0)
1542 ff_hls_write_end_list(byterange_mode ? hls->m3u8_out : vs->out);
1544 if (vs->vtt_m3u8_name) {
1545 snprintf(temp_vtt_filename, sizeof(temp_vtt_filename), use_temp_file ? "%s.tmp" : "%s", vs->vtt_m3u8_name);
1546 if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, temp_vtt_filename, &options)) < 0) {
1547 if (hls->ignore_io_errors)
1551 ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache,
1552 target_duration, sequence, PLAYLIST_TYPE_NONE, 0);
1553 for (en = vs->segments; en; en = en->next) {
1554 ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode,
1555 en->duration, 0, en->size, en->pos,
1556 vs->baseurl, en->sub_filename, NULL, 0, 0, 0);
1558 av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
1563 ff_hls_write_end_list(hls->sub_m3u8_out);
1568 av_dict_free(&options);
1569 ret = hlsenc_io_close(s, byterange_mode ? &hls->m3u8_out : &vs->out, temp_filename);
1573 hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name);
1574 if (use_temp_file) {
1575 ff_rename(temp_filename, vs->m3u8_name, s);
1576 if (vs->vtt_m3u8_name)
1577 ff_rename(temp_vtt_filename, vs->vtt_m3u8_name, s);
1579 if (ret >= 0 && hls->master_pl_name)
1580 if (create_master_playlist(s, vs) < 0)
1581 av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n");
1586 static int hls_start(AVFormatContext *s, VariantStream *vs)
1588 HLSContext *c = s->priv_data;
1589 AVFormatContext *oc = vs->avf;
1590 AVFormatContext *vtt_oc = vs->vtt_avf;
1591 AVDictionary *options = NULL;
1592 const char *proto = NULL;
1593 int use_temp_file = 0;
1594 char iv_string[KEYSIZE*2 + 1];
1597 if (c->flags & HLS_SINGLE_FILE) {
1598 char *new_name = av_strdup(vs->basename);
1600 return AVERROR(ENOMEM);
1601 ff_format_set_url(oc, new_name);
1602 if (vs->vtt_basename) {
1603 new_name = av_strdup(vs->vtt_basename);
1605 return AVERROR(ENOMEM);
1606 ff_format_set_url(vtt_oc, new_name);
1608 } else if (c->max_seg_size > 0) {
1609 char *filename = NULL;
1610 if (replace_int_data_in_filename(&filename,
1612 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1614 vs->basename, 'd', vs->sequence) < 1) {
1616 av_freep(&filename);
1617 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename);
1618 return AVERROR(EINVAL);
1620 ff_format_set_url(oc, filename);
1622 if (c->use_localtime) {
1624 struct tm *tm, tmpbuf;
1625 int bufsize = strlen(vs->basename) + MAX_URL_SIZE;
1626 char *buf = av_mallocz(bufsize);
1628 return AVERROR(ENOMEM);
1630 tm = localtime_r(&now0, &tmpbuf);
1631 ff_format_set_url(oc, buf);
1632 if (!strftime(oc->url, bufsize, vs->basename, tm)) {
1633 av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n");
1634 return AVERROR(EINVAL);
1637 err = sls_flag_use_localtime_filename(oc, c, vs);
1639 return AVERROR(ENOMEM);
1642 if (c->use_localtime_mkdir) {
1644 char *fn_copy = av_strdup(oc->url);
1645 dir = av_dirname(fn_copy);
1646 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1647 av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir);
1649 return AVERROR(errno);
1654 char *filename = NULL;
1655 if (replace_int_data_in_filename(&filename,
1657 vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1659 vs->basename, 'd', vs->sequence) < 1) {
1661 av_freep(&filename);
1662 av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename);
1663 return AVERROR(EINVAL);
1665 ff_format_set_url(oc, filename);
1667 if ( vs->vtt_basename) {
1668 char *filename = NULL;
1669 if (replace_int_data_in_filename(&filename,
1671 vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) {
1673 vs->vtt_basename, 'd', vs->sequence) < 1) {
1675 av_freep(&filename);
1676 av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename);
1677 return AVERROR(EINVAL);
1679 ff_format_set_url(vtt_oc, filename);
1684 proto = avio_find_protocol_name(oc->url);
1685 use_temp_file = proto && !strcmp(proto, "file") && (c->flags & HLS_TEMP_FILE);
1687 if (use_temp_file) {
1688 char *new_name = av_asprintf("%s.tmp", oc->url);
1690 return AVERROR(ENOMEM);
1691 ff_format_set_url(oc, new_name);
1694 if (c->key_info_file || c->encrypt) {
1695 if (c->segment_type == SEGMENT_TYPE_FMP4) {
1696 av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n");
1697 return AVERROR_PATCHWELCOME;
1700 if (c->key_info_file && c->encrypt) {
1701 av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc,"
1702 " ignoring -hls_enc\n");
1705 if (!vs->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) {
1706 if (c->key_info_file) {
1707 if ((err = hls_encryption_start(s, vs)) < 0)
1710 if (!c->encrypt_started) {
1711 if ((err = do_encrypt(s, vs)) < 0)
1713 c->encrypt_started = 1;
1715 av_strlcpy(vs->key_uri, c->key_uri, sizeof(vs->key_uri));
1716 av_strlcpy(vs->key_string, c->key_string, sizeof(vs->key_string));
1717 av_strlcpy(vs->iv_string, c->iv_string, sizeof(vs->iv_string));
1719 vs->encrypt_started = 1;
1721 err = av_strlcpy(iv_string, vs->iv_string, sizeof(iv_string));
1723 snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence);
1724 memset(vs->iv_string, 0, sizeof(vs->iv_string));
1725 memcpy(vs->iv_string, iv_string, sizeof(iv_string));
1728 if (c->segment_type != SEGMENT_TYPE_FMP4) {
1729 if (oc->oformat->priv_class && oc->priv_data) {
1730 av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0);
1732 if (c->flags & HLS_SINGLE_FILE) {
1733 set_http_options(s, &options, c);
1734 if ((err = hlsenc_io_open(s, &vs->out, oc->url, &options)) < 0) {
1735 if (c->ignore_io_errors)
1741 if (vs->vtt_basename) {
1742 set_http_options(s, &options, c);
1743 if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) {
1744 if (c->ignore_io_errors)
1749 av_dict_free(&options);
1751 if (vs->vtt_basename) {
1752 err = avformat_write_header(vtt_oc,NULL);
1759 av_dict_free(&options);
1764 static const char * get_default_pattern_localtime_fmt(AVFormatContext *s)
1767 time_t t = time(NULL);
1768 struct tm *p, tmbuf;
1769 HLSContext *hls = s->priv_data;
1771 p = localtime_r(&t, &tmbuf);
1772 // no %s support when strftime returned error or left format string unchanged
1773 // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error
1774 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
1775 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s";
1777 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts";
1780 static int append_postfix(char *name, int name_buf_len, int i)
1783 char extension[10] = {'\0'};
1785 p = strrchr(name, '.');
1787 av_strlcpy(extension, p, sizeof(extension));
1791 snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i);
1793 if (strlen(extension))
1794 av_strlcat(name, extension, name_buf_len);
1799 static int validate_name(int nb_vs, const char *fn)
1801 const char *filename, *subdir_name;
1802 char *fn_dup = NULL;
1806 ret = AVERROR(EINVAL);
1810 fn_dup = av_strdup(fn);
1811 filename = av_basename(fn);
1812 subdir_name = av_dirname(fn_dup);
1814 if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) {
1815 av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected "
1816 "either in the filename or in the sub-directory name of file %s\n", fn);
1817 ret = AVERROR(EINVAL);
1821 if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) {
1822 av_log(NULL, AV_LOG_ERROR, "%%v is expected either in the filename or "
1823 "in the sub-directory name of file %s, but only in one of them\n", fn);
1824 ret = AVERROR(EINVAL);
1833 static int format_name(const char *buf, char **s, int index, const char *varname)
1835 const char *proto, *dir;
1836 char *orig_buf_dup = NULL, *mod_buf_dup = NULL;
1839 orig_buf_dup = av_strdup(buf);
1840 if (!orig_buf_dup) {
1841 ret = AVERROR(ENOMEM);
1845 if (!av_stristr(buf, "%v")) {
1851 if (replace_int_data_in_filename(s, orig_buf_dup, 'v', index) < 1) {
1852 ret = AVERROR(EINVAL);
1856 if (replace_str_data_in_filename(s, orig_buf_dup, 'v', varname) < 1) {
1857 ret = AVERROR(EINVAL);
1862 proto = avio_find_protocol_name(orig_buf_dup);
1863 dir = av_dirname(orig_buf_dup);
1865 /* if %v is present in the file's directory, create sub-directory */
1866 if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) {
1867 mod_buf_dup = av_strdup(*s);
1868 dir = av_dirname(mod_buf_dup);
1869 if (ff_mkdir_p(dir) == -1 && errno != EEXIST) {
1870 ret = AVERROR(errno);
1876 av_freep(&orig_buf_dup);
1877 av_freep(&mod_buf_dup);
1881 static int get_nth_codec_stream_index(AVFormatContext *s,
1882 enum AVMediaType codec_type,
1885 unsigned int stream_index, cnt;
1886 if (stream_id < 0 || stream_id > s->nb_streams - 1)
1889 for (stream_index = 0; stream_index < s->nb_streams; stream_index++) {
1890 if (s->streams[stream_index]->codecpar->codec_type != codec_type)
1892 if (cnt == stream_id)
1893 return stream_index;
1899 static int parse_variant_stream_mapstring(AVFormatContext *s)
1901 HLSContext *hls = s->priv_data;
1903 int stream_index, i, j;
1904 enum AVMediaType codec_type;
1905 int nb_varstreams = 0, nb_streams;
1906 char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval;
1910 * Expected format for var_stream_map string is as below:
1912 * "a:0,agroup:a0,default:1,language:ENG a:1,agroup:a1,default:0 v:0,agroup:a0 v:1,agroup:a1"
1913 * This string specifies how to group the audio, video and subtitle streams
1914 * into different variant streams. The variant stream groups are separated
1917 * a:, v:, s: are keys to specify audio, video and subtitle streams
1918 * respectively. Allowed values are 0 to 9 digits (limited just based on
1921 * agroup: is key to specify audio group. A string can be given as value.
1922 * sgroup: is key to specify subtitle group. A string can be given as value.
1924 p = av_strdup(hls->var_stream_map);
1926 return AVERROR(ENOMEM);
1929 while (av_strtok(q, " \t", &saveptr1)) {
1935 hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * nb_varstreams);
1936 if (!hls->var_streams)
1937 return AVERROR(ENOMEM);
1938 hls->nb_varstreams = nb_varstreams;
1940 p = hls->var_stream_map;
1942 while (varstr = av_strtok(p, " \t", &saveptr1)) {
1945 if (nb_varstreams < hls->nb_varstreams) {
1946 vs = &(hls->var_streams[nb_varstreams]);
1947 vs->var_stream_idx = nb_varstreams;
1951 return AVERROR(EINVAL);
1954 while (q < varstr + strlen(varstr)) {
1955 if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) ||
1956 !av_strncasecmp(q, "s:", 2))
1960 vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams);
1962 return AVERROR(ENOMEM);
1965 while (keyval = av_strtok(varstr, ",", &saveptr2)) {
1967 if (av_strstart(keyval, "language:", &val)) {
1968 av_free(vs->language);
1969 vs->language = av_strdup(val);
1971 return AVERROR(ENOMEM);
1973 } else if (av_strstart(keyval, "default:", &val)) {
1974 vs->is_default = (!av_strncasecmp(val, "YES", strlen("YES")) ||
1975 (!av_strncasecmp(val, "1", strlen("1"))));
1976 hls->has_default_key = 1;
1978 } else if (av_strstart(keyval, "name:", &val)) {
1979 av_free(vs->varname);
1980 vs->varname = av_strdup(val);
1982 return AVERROR(ENOMEM);
1984 } else if (av_strstart(keyval, "agroup:", &val)) {
1985 av_free(vs->agroup);
1986 vs->agroup = av_strdup(val);
1988 return AVERROR(ENOMEM);
1990 } else if (av_strstart(keyval, "sgroup:", &val)) {
1991 av_free(vs->sgroup);
1992 vs->sgroup = av_strdup(val);
1994 return AVERROR(ENOMEM);
1996 } else if (av_strstart(keyval, "ccgroup:", &val)) {
1997 av_free(vs->ccgroup);
1998 vs->ccgroup = av_strdup(val);
2000 return AVERROR(ENOMEM);
2002 } else if (av_strstart(keyval, "v:", &val)) {
2003 codec_type = AVMEDIA_TYPE_VIDEO;
2004 hls->has_video_m3u8 = 1;
2005 } else if (av_strstart(keyval, "a:", &val)) {
2006 codec_type = AVMEDIA_TYPE_AUDIO;
2007 } else if (av_strstart(keyval, "s:", &val)) {
2008 codec_type = AVMEDIA_TYPE_SUBTITLE;
2010 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2011 return AVERROR(EINVAL);
2015 if (av_isdigit(*val))
2016 stream_index = get_nth_codec_stream_index (s, codec_type,
2019 if (stream_index >= 0 && nb_streams < vs->nb_streams) {
2020 for (i = 0; nb_streams > 0 && i < nb_streams; i++) {
2021 if (vs->streams[i] == s->streams[stream_index]) {
2022 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once inside "
2023 "variant definition #%d\n", nb_varstreams - 1);
2024 return AVERROR(EINVAL);
2027 for (j = 0; nb_varstreams > 1 && j < nb_varstreams - 1; j++) {
2028 for (i = 0; i < hls->var_streams[j].nb_streams; i++) {
2029 if (hls->var_streams[j].streams[i] == s->streams[stream_index]) {
2030 av_log(s, AV_LOG_ERROR, "Same elementary stream found more than once "
2031 "in two different variant definitions #%d and #%d\n",
2032 j, nb_varstreams - 1);
2033 return AVERROR(EINVAL);
2037 vs->streams[nb_streams++] = s->streams[stream_index];
2039 av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval);
2040 return AVERROR(EINVAL);
2044 av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n",
2045 hls->nb_varstreams);
2050 static int parse_cc_stream_mapstring(AVFormatContext *s)
2052 HLSContext *hls = s->priv_data;
2053 int nb_ccstreams = 0;
2054 char *p, *q, *ccstr, *keyval;
2055 char *saveptr1 = NULL, *saveptr2 = NULL;
2057 ClosedCaptionsStream *ccs;
2059 p = av_strdup(hls->cc_stream_map);
2061 return AVERROR(ENOMEM);
2064 while (av_strtok(q, " \t", &saveptr1)) {
2070 hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * nb_ccstreams);
2071 if (!hls->cc_streams)
2072 return AVERROR(ENOMEM);
2073 hls->nb_ccstreams = nb_ccstreams;
2075 p = hls->cc_stream_map;
2077 while (ccstr = av_strtok(p, " \t", &saveptr1)) {
2080 if (nb_ccstreams < hls->nb_ccstreams)
2081 ccs = &(hls->cc_streams[nb_ccstreams++]);
2083 return AVERROR(EINVAL);
2085 while (keyval = av_strtok(ccstr, ",", &saveptr2)) {
2088 if (av_strstart(keyval, "ccgroup:", &val)) {
2089 av_free(ccs->ccgroup);
2090 ccs->ccgroup = av_strdup(val);
2092 return AVERROR(ENOMEM);
2093 } else if (av_strstart(keyval, "instreamid:", &val)) {
2094 av_free(ccs->instreamid);
2095 ccs->instreamid = av_strdup(val);
2096 if (!ccs->instreamid)
2097 return AVERROR(ENOMEM);
2098 } else if (av_strstart(keyval, "language:", &val)) {
2099 av_free(ccs->language);
2100 ccs->language = av_strdup(val);
2102 return AVERROR(ENOMEM);
2104 av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval);
2105 return AVERROR(EINVAL);
2109 if (!ccs->ccgroup || !ccs->instreamid) {
2110 av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n");
2111 return AVERROR(EINVAL);
2114 if (av_strstart(ccs->instreamid, "CC", &val)) {
2115 if (atoi(val) < 1 || atoi(val) > 4) {
2116 av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n",
2117 atoi(val), ccs->instreamid);
2118 return AVERROR(EINVAL);
2120 } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) {
2121 if (atoi(val) < 1 || atoi(val) > 63) {
2122 av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n",
2123 atoi(val), ccs->instreamid);
2124 return AVERROR(EINVAL);
2127 av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERVICEn\n",
2129 return AVERROR(EINVAL);
2136 static int update_variant_stream_info(AVFormatContext *s)
2138 HLSContext *hls = s->priv_data;
2142 if (hls->cc_stream_map) {
2143 ret = parse_cc_stream_mapstring(s);
2148 if (hls->var_stream_map) {
2149 return parse_variant_stream_mapstring(s);
2151 //By default, a single variant stream with all the codec streams is created
2152 hls->var_streams = av_mallocz(sizeof(*hls->var_streams));
2153 if (!hls->var_streams)
2154 return AVERROR(ENOMEM);
2155 hls->nb_varstreams = 1;
2157 hls->var_streams[0].var_stream_idx = 0;
2158 hls->var_streams[0].nb_streams = s->nb_streams;
2159 hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) *
2160 hls->var_streams[0].nb_streams);
2161 if (!hls->var_streams[0].streams) {
2162 return AVERROR(ENOMEM);
2165 //by default, the first available ccgroup is mapped to the variant stream
2166 if (hls->nb_ccstreams) {
2167 hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup);
2168 if (!hls->var_streams[0].ccgroup) {
2169 return AVERROR(ENOMEM);
2173 for (i = 0; i < s->nb_streams; i++)
2174 hls->var_streams[0].streams[i] = s->streams[i];
2179 static int update_master_pl_info(AVFormatContext *s)
2181 HLSContext *hls = s->priv_data;
2183 char *fn1= NULL, *fn2 = NULL;
2186 fn1 = av_strdup(s->url);
2187 dir = av_dirname(fn1);
2190 * if output file's directory has %v, variants are created in sub-directories
2191 * then master is created at the sub-directories level
2193 if (dir && av_stristr(av_basename(dir), "%v")) {
2194 fn2 = av_strdup(dir);
2195 dir = av_dirname(fn2);
2198 if (dir && strcmp(dir, "."))
2199 hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name);
2201 hls->master_m3u8_url = av_strdup(hls->master_pl_name);
2203 if (!hls->master_m3u8_url) {
2204 ret = AVERROR(ENOMEM);
2215 static int hls_write_header(AVFormatContext *s)
2217 HLSContext *hls = s->priv_data;
2219 VariantStream *vs = NULL;
2221 for (i = 0; i < hls->nb_varstreams; i++) {
2222 vs = &hls->var_streams[i];
2224 ret = avformat_write_header(vs->avf, NULL);
2227 //av_assert0(s->nb_streams == hls->avf->nb_streams);
2228 for (j = 0; j < vs->nb_streams; j++) {
2230 AVStream *outer_st = vs->streams[j];
2232 if (hls->max_seg_size > 0) {
2233 if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) &&
2234 (outer_st->codecpar->bit_rate > hls->max_seg_size)) {
2235 av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, "
2236 "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.",
2237 outer_st->codecpar->bit_rate, hls->max_seg_size);
2241 if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE)
2242 inner_st = vs->avf->streams[j];
2243 else if (vs->vtt_avf)
2244 inner_st = vs->vtt_avf->streams[0];
2246 /* We have a subtitle stream, when the user does not want one */
2250 avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den);
2251 write_codec_attr(outer_st, vs);
2254 /* Update the Codec Attr string for the mapped audio groups */
2255 if (vs->has_video && vs->agroup) {
2256 for (j = 0; j < hls->nb_varstreams; j++) {
2257 VariantStream *vs_agroup = &(hls->var_streams[j]);
2258 if (!vs_agroup->has_video && !vs_agroup->has_subtitle &&
2259 vs_agroup->agroup &&
2260 !av_strcasecmp(vs_agroup->agroup, vs->agroup)) {
2261 write_codec_attr(vs_agroup->streams[0], vs);
2270 static int hls_init_file_resend(AVFormatContext *s, VariantStream *vs)
2272 HLSContext *hls = s->priv_data;
2273 AVDictionary *options = NULL;
2276 set_http_options(s, &options, hls);
2277 ret = hlsenc_io_open(s, &vs->out, hls->fmp4_init_filename, &options);
2278 av_dict_free(&options);
2281 avio_write(vs->out, vs->init_buffer, vs->init_range_length);
2282 hlsenc_io_close(s, &vs->out, hls->fmp4_init_filename);
2287 static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
2289 HLSContext *hls = s->priv_data;
2290 AVFormatContext *oc = NULL;
2291 AVStream *st = s->streams[pkt->stream_index];
2292 int64_t end_pts = 0;
2294 int ret = 0, can_split = 1, i, j;
2295 int stream_index = 0;
2296 int range_length = 0;
2297 const char *proto = NULL;
2298 int use_temp_file = 0;
2299 VariantStream *vs = NULL;
2300 char *old_filename = NULL;
2302 for (i = 0; i < hls->nb_varstreams; i++) {
2303 vs = &hls->var_streams[i];
2304 for (j = 0; j < vs->nb_streams; j++) {
2305 if (vs->streams[j] == st) {
2306 if ( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) {
2322 av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n");
2323 return AVERROR(ENOMEM);
2326 end_pts = hls->recording_time * vs->number;
2328 if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) {
2329 /* reset end_pts, hls->recording_time at end of the init hls list */
2330 int64_t init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE;
2331 int64_t after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE);
2332 hls->recording_time = hls->time * AV_TIME_BASE;
2333 end_pts = init_list_dur + after_init_list_dur ;
2336 if (vs->start_pts == AV_NOPTS_VALUE) {
2337 vs->start_pts = pkt->pts;
2338 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2339 vs->start_pts_from_audio = 1;
2341 if (vs->start_pts_from_audio && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && vs->start_pts > pkt->pts) {
2342 vs->start_pts = pkt->pts;
2343 vs->start_pts_from_audio = 0;
2346 if (vs->has_video) {
2347 can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
2348 ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME));
2349 is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index);
2351 if (pkt->pts == AV_NOPTS_VALUE)
2352 is_ref_pkt = can_split = 0;
2355 if (vs->end_pts == AV_NOPTS_VALUE)
2356 vs->end_pts = pkt->pts;
2357 if (vs->new_start) {
2359 vs->duration = (double)(pkt->pts - vs->end_pts)
2360 * st->time_base.num / st->time_base.den;
2361 vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2363 if (pkt->duration) {
2364 vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den;
2366 av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n");
2367 vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2373 if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base,
2374 end_pts, AV_TIME_BASE_Q) >= 0) {
2375 int64_t new_start_pos;
2376 int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2378 av_write_frame(oc, NULL); /* Flush any buffered data */
2379 new_start_pos = avio_tell(oc->pb);
2380 vs->size = new_start_pos - vs->start_pos;
2382 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2383 if (!vs->init_range_length) {
2384 range_length = avio_close_dyn_buf(oc->pb, &vs->init_buffer);
2385 if (range_length <= 0)
2386 return AVERROR(EINVAL);
2387 avio_write(vs->out, vs->init_buffer, range_length);
2388 if (!hls->resend_init_file)
2389 av_freep(&vs->init_buffer);
2390 vs->init_range_length = range_length;
2391 avio_open_dyn_buf(&oc->pb);
2392 vs->packets_written = 0;
2393 vs->start_pos = range_length;
2394 if (!byterange_mode) {
2395 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2399 if (!byterange_mode) {
2401 hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url);
2406 proto = avio_find_protocol_name(oc->url);
2407 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2410 if (hls->flags & HLS_SINGLE_FILE) {
2411 ret = flush_dynbuf(vs, &range_length);
2412 av_freep(&vs->temp_buffer);
2416 vs->size = range_length;
2418 if ((hls->max_seg_size > 0 && (vs->size >= hls->max_seg_size)) || !byterange_mode) {
2419 AVDictionary *options = NULL;
2420 char *filename = NULL;
2421 if (hls->key_info_file || hls->encrypt) {
2422 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2423 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2424 filename = av_asprintf("crypto:%s", oc->url);
2426 filename = av_asprintf("%s", oc->url);
2429 av_dict_free(&options);
2430 return AVERROR(ENOMEM);
2433 // look to rename the asset name
2435 av_dict_set(&options, "mpegts_flags", "resend_headers", 0);
2437 set_http_options(s, &options, hls);
2439 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2441 av_log(s, hls->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
2442 "Failed to open file '%s'\n", filename);
2443 av_dict_free(&options);
2444 return hls->ignore_io_errors ? 0 : ret;
2446 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2447 write_styp(vs->out);
2449 ret = flush_dynbuf(vs, &range_length);
2451 av_dict_free(&options);
2454 ret = hlsenc_io_close(s, &vs->out, filename);
2456 av_log(s, AV_LOG_WARNING, "upload segment failed,"
2457 " will retry with a new http session.\n");
2458 ff_format_io_close(s, &vs->out);
2459 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2460 reflush_dynbuf(vs, &range_length);
2461 ret = hlsenc_io_close(s, &vs->out, filename);
2463 av_dict_free(&options);
2464 av_freep(&vs->temp_buffer);
2465 av_freep(&filename);
2469 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2470 hls_rename_temp_file(s, oc);
2473 old_filename = av_strdup(oc->url);
2474 if (!old_filename) {
2475 return AVERROR(ENOMEM);
2478 if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) {
2479 double cur_duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den;
2480 ret = hls_append_segment(s, hls, vs, cur_duration, vs->start_pos, vs->size);
2481 vs->end_pts = pkt->pts;
2484 av_freep(&old_filename);
2489 // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end
2490 if (hls->pl_type != PLAYLIST_TYPE_VOD) {
2491 if ((ret = hls_window(s, 0, vs)) < 0) {
2492 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2493 ff_format_io_close(s, &vs->out);
2495 if ((ret = hls_window(s, 0, vs)) < 0) {
2496 av_freep(&old_filename);
2502 if (hls->resend_init_file && hls->segment_type == SEGMENT_TYPE_FMP4) {
2503 ret = hls_init_file_resend(s, vs);
2505 av_freep(&old_filename);
2510 if (hls->flags & HLS_SINGLE_FILE) {
2512 vs->start_pos += vs->size;
2513 } else if (hls->max_seg_size > 0) {
2514 vs->start_pos = new_start_pos;
2515 if (vs->size >= hls->max_seg_size) {
2517 sls_flag_file_rename(hls, vs, old_filename);
2518 ret = hls_start(s, vs);
2520 /* When split segment by byte, the duration is short than hls_time,
2521 * so it is not enough one segment duration as hls_time, */
2526 vs->start_pos = new_start_pos;
2527 sls_flag_file_rename(hls, vs, old_filename);
2528 ret = hls_start(s, vs);
2530 av_freep(&old_filename);
2538 vs->packets_written++;
2540 ret = ff_write_chained(oc, stream_index, pkt, s, 0);
2541 vs->video_keyframe_size += pkt->size;
2542 if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->flags & AV_PKT_FLAG_KEY)) {
2543 vs->video_keyframe_size = avio_tell(oc->pb);
2545 vs->video_keyframe_pos = avio_tell(vs->out);
2547 if (hls->ignore_io_errors)
2554 static void hls_free_variant_streams(struct HLSContext *hls)
2557 AVFormatContext *vtt_oc = NULL;
2558 VariantStream *vs = NULL;
2560 for (i = 0; i < hls->nb_varstreams; i++) {
2561 vs = &hls->var_streams[i];
2562 vtt_oc = vs->vtt_avf;
2564 av_freep(&vs->basename);
2565 av_freep(&vs->base_output_dirname);
2566 av_freep(&vs->fmp4_init_filename);
2568 av_freep(&vs->vtt_basename);
2569 av_freep(&vs->vtt_m3u8_name);
2570 avformat_free_context(vtt_oc);
2573 avformat_free_context(vs->avf);
2574 if (hls->resend_init_file)
2575 av_freep(&vs->init_buffer);
2576 hls_free_segments(vs->segments);
2577 hls_free_segments(vs->old_segments);
2578 av_freep(&vs->m3u8_name);
2579 av_freep(&vs->streams);
2580 av_freep(&vs->agroup);
2581 av_freep(&vs->sgroup);
2582 av_freep(&vs->language);
2583 av_freep(&vs->ccgroup);
2584 av_freep(&vs->baseurl);
2585 av_freep(&vs->varname);
2589 static int hls_write_trailer(struct AVFormatContext *s)
2591 HLSContext *hls = s->priv_data;
2592 AVFormatContext *oc = NULL;
2593 AVFormatContext *vtt_oc = NULL;
2594 char *old_filename = NULL;
2595 const char *proto = NULL;
2596 int use_temp_file = 0;
2599 VariantStream *vs = NULL;
2600 AVDictionary *options = NULL;
2601 int range_length, byterange_mode;
2603 for (i = 0; i < hls->nb_varstreams; i++) {
2604 char *filename = NULL;
2605 vs = &hls->var_streams[i];
2607 vtt_oc = vs->vtt_avf;
2608 old_filename = av_strdup(oc->url);
2611 if (!old_filename) {
2612 return AVERROR(ENOMEM);
2614 if (hls->key_info_file || hls->encrypt) {
2615 av_dict_set(&options, "encryption_key", vs->key_string, 0);
2616 av_dict_set(&options, "encryption_iv", vs->iv_string, 0);
2617 filename = av_asprintf("crypto:%s", oc->url);
2619 filename = av_asprintf("%s", oc->url);
2622 av_freep(&old_filename);
2623 return AVERROR(ENOMEM);
2626 if ( hls->segment_type == SEGMENT_TYPE_FMP4) {
2627 int range_length = 0;
2628 if (!vs->init_range_length) {
2629 uint8_t *buffer = NULL;
2630 av_write_frame(oc, NULL); /* Flush any buffered data */
2632 range_length = avio_close_dyn_buf(oc->pb, &buffer);
2633 avio_write(vs->out, buffer, range_length);
2635 vs->init_range_length = range_length;
2636 avio_open_dyn_buf(&oc->pb);
2637 vs->packets_written = 0;
2638 vs->start_pos = range_length;
2639 byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0);
2640 if (!byterange_mode) {
2641 ff_format_io_close(s, &vs->out);
2642 hlsenc_io_close(s, &vs->out, vs->base_output_dirname);
2646 if (!(hls->flags & HLS_SINGLE_FILE)) {
2647 set_http_options(s, &options, hls);
2648 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2650 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2653 if (hls->segment_type == SEGMENT_TYPE_FMP4)
2654 write_styp(vs->out);
2656 ret = flush_dynbuf(vs, &range_length);
2660 vs->size = range_length;
2661 hlsenc_io_close(s, &vs->out, filename);
2662 ret = hlsenc_io_close(s, &vs->out, filename);
2664 av_log(s, AV_LOG_WARNING, "upload segment failed, will retry with a new http session.\n");
2665 ff_format_io_close(s, &vs->out);
2666 ret = hlsenc_io_open(s, &vs->out, filename, &options);
2668 av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", oc->url);
2671 reflush_dynbuf(vs, &range_length);
2672 ret = hlsenc_io_close(s, &vs->out, filename);
2674 av_log(s, AV_LOG_WARNING, "Failed to upload file '%s' at the end.\n", oc->url);
2676 av_freep(&vs->temp_buffer);
2679 av_freep(&filename);
2680 av_write_trailer(oc);
2682 proto = avio_find_protocol_name(oc->url);
2683 use_temp_file = proto && !strcmp(proto, "file") && (hls->flags & HLS_TEMP_FILE);
2686 // rename that segment from .tmp to the real one
2687 if (use_temp_file && !(hls->flags & HLS_SINGLE_FILE)) {
2688 hls_rename_temp_file(s, oc);
2689 av_freep(&old_filename);
2690 old_filename = av_strdup(oc->url);
2692 if (!old_filename) {
2693 return AVERROR(ENOMEM);
2697 /* after av_write_trailer, then duration + 1 duration per packet */
2698 hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size);
2700 sls_flag_file_rename(hls, vs, old_filename);
2704 av_write_trailer(vtt_oc);
2705 vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos;
2706 ff_format_io_close(s, &vtt_oc->pb);
2708 ret = hls_window(s, 1, vs);
2710 av_log(s, AV_LOG_WARNING, "upload playlist failed, will retry with a new http session.\n");
2711 ff_format_io_close(s, &vs->out);
2712 hls_window(s, 1, vs);
2714 ffio_free_dyn_buf(&oc->pb);
2716 av_free(old_filename);
2719 hls_free_variant_streams(hls);
2721 for (i = 0; i < hls->nb_ccstreams; i++) {
2722 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
2723 av_freep(&ccs->ccgroup);
2724 av_freep(&ccs->instreamid);
2725 av_freep(&ccs->language);
2728 ff_format_io_close(s, &hls->m3u8_out);
2729 ff_format_io_close(s, &hls->sub_m3u8_out);
2730 av_freep(&hls->key_basename);
2731 av_freep(&hls->var_streams);
2732 av_freep(&hls->cc_streams);
2733 av_freep(&hls->master_m3u8_url);
2738 static int hls_init(AVFormatContext *s)
2743 HLSContext *hls = s->priv_data;
2744 const char *pattern = "%d.ts";
2745 VariantStream *vs = NULL;
2746 int basename_size = 0;
2747 const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s);
2748 const char *vtt_pattern = "%d.vtt";
2750 int vtt_basename_size = 0;
2751 int http_base_proto = ff_is_http_proto(s->url);
2752 int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1;
2754 hls->has_default_key = 0;
2755 hls->has_video_m3u8 = 0;
2756 ret = update_variant_stream_info(s);
2758 av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n",
2763 if (!hls->method && http_base_proto) {
2764 av_log(hls, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n");
2767 ret = validate_name(hls->nb_varstreams, s->url);
2771 if (hls->segment_filename) {
2772 ret = validate_name(hls->nb_varstreams, hls->segment_filename);
2777 if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) {
2778 ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename);
2783 if (hls->subtitle_filename) {
2784 ret = validate_name(hls->nb_varstreams, hls->subtitle_filename);
2789 if (hls->master_pl_name) {
2790 ret = update_master_pl_info(s);
2792 av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n",
2798 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2801 if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) ||
2802 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) ||
2803 (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) {
2804 time_t t = time(NULL);
2805 if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_MICROSECONDS_SINCE_EPOCH) {
2806 hls->start_sequence = av_gettime();
2807 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) {
2808 hls->start_sequence = (int64_t)t;
2809 } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) {
2811 struct tm *p, tmbuf;
2812 if (!(p = localtime_r(&t, &tmbuf)))
2813 return AVERROR(errno);
2814 if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p))
2815 return AVERROR(ENOMEM);
2816 hls->start_sequence = strtoll(b, NULL, 10);
2818 av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence);
2821 hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE;
2822 for (i = 0; i < hls->nb_varstreams; i++) {
2823 vs = &hls->var_streams[i];
2825 ret = format_name(s->url, &vs->m3u8_name, i, vs->varname);
2829 vs->sequence = hls->start_sequence;
2830 vs->start_pts = AV_NOPTS_VALUE;
2831 vs->end_pts = AV_NOPTS_VALUE;
2832 vs->current_segment_final_filename_fmt[0] = '\0';
2834 if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) {
2835 // Independent segments cannot be guaranteed when splitting by time
2836 hls->flags &= ~HLS_INDEPENDENT_SEGMENTS;
2837 av_log(s, AV_LOG_WARNING,
2838 "'split_by_time' and 'independent_segments' cannot be enabled together. "
2839 "Disabling 'independent_segments' flag\n");
2842 if (hls->flags & HLS_PROGRAM_DATE_TIME) {
2845 vs->initial_prog_date_time = now0;
2848 for (j = 0; j < vs->nb_streams; j++) {
2849 vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
2850 /* Get one video stream to reference for split segments
2851 * so use the first video stream index. */
2852 if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) {
2853 vs->reference_stream_index = vs->streams[j]->index;
2855 vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE;
2858 if (vs->has_video > 1)
2859 av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n");
2860 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2861 vs->oformat = av_guess_format("mp4", NULL, NULL);
2863 vs->oformat = av_guess_format("mpegts", NULL, NULL);
2867 ret = AVERROR_MUXER_NOT_FOUND;
2871 if (vs->has_subtitle) {
2872 vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL);
2873 if (!vs->vtt_oformat) {
2874 ret = AVERROR_MUXER_NOT_FOUND;
2878 if (hls->segment_filename) {
2879 ret = format_name(hls->segment_filename, &vs->basename, i, vs->varname);
2883 if (hls->flags & HLS_SINGLE_FILE) {
2884 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2891 if (hls->use_localtime) {
2892 basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1;
2894 basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1;
2897 vs->basename = av_malloc(basename_size);
2898 if (!vs->basename) {
2899 ret = AVERROR(ENOMEM);
2903 av_strlcpy(vs->basename, vs->m3u8_name, basename_size);
2905 p = strrchr(vs->basename, '.');
2908 if (hls->use_localtime) {
2909 av_strlcat(vs->basename, pattern_localtime_fmt, basename_size);
2911 av_strlcat(vs->basename, pattern, basename_size);
2915 if (hls->segment_type == SEGMENT_TYPE_FMP4) {
2916 if (hls->nb_varstreams > 1)
2917 fmp4_init_filename_len += strlen(POSTFIX_PATTERN);
2918 if (hls->flags & HLS_SINGLE_FILE) {
2919 vs->fmp4_init_filename = av_strdup(vs->basename);
2920 if (!vs->fmp4_init_filename) {
2921 ret = AVERROR(ENOMEM);
2925 vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len);
2926 if (!vs->fmp4_init_filename ) {
2927 ret = AVERROR(ENOMEM);
2930 av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename,
2931 fmp4_init_filename_len);
2932 if (hls->nb_varstreams > 1) {
2933 if (av_stristr(vs->fmp4_init_filename, "%v")) {
2934 av_freep(&vs->fmp4_init_filename);
2935 format_name(hls->fmp4_init_filename, &vs->fmp4_init_filename, i, vs->varname);
2937 ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i);
2943 fmp4_init_filename_len = strlen(vs->m3u8_name) +
2944 strlen(vs->fmp4_init_filename) + 1;
2946 vs->base_output_dirname = av_malloc(fmp4_init_filename_len);
2947 if (!vs->base_output_dirname) {
2948 ret = AVERROR(ENOMEM);
2952 av_strlcpy(vs->base_output_dirname, vs->m3u8_name,
2953 fmp4_init_filename_len);
2954 p = strrchr(vs->base_output_dirname, '/');
2957 av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename,
2958 fmp4_init_filename_len);
2960 av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename,
2961 fmp4_init_filename_len);
2966 ret = hls->use_localtime ? sls_flag_check_duration_size(hls, vs) : sls_flag_check_duration_size_index(hls);
2970 if (vs->has_subtitle) {
2972 if (hls->flags & HLS_SINGLE_FILE)
2973 vtt_pattern = ".vtt";
2974 vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1;
2976 vs->vtt_basename = av_malloc(vtt_basename_size);
2977 if (!vs->vtt_basename) {
2978 ret = AVERROR(ENOMEM);
2981 av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size);
2982 p = strrchr(vs->vtt_basename, '.');
2986 if ( hls->subtitle_filename ) {
2987 ret = format_name(hls->subtitle_filename, &vs->vtt_m3u8_name, i, vs->varname);
2991 vs->vtt_m3u8_name = av_asprintf("%s_vtt.m3u8", vs->vtt_basename);
2992 if (!vs->vtt_m3u8_name) {
2993 ret = AVERROR(ENOMEM);
2997 av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size);
3001 vs->baseurl = av_strdup(hls->baseurl);
3003 ret = AVERROR(ENOMEM);
3008 if ((ret = hls_mux_init(s, vs)) < 0)
3011 if (hls->flags & HLS_APPEND_LIST) {
3012 parse_playlist(s, vs->m3u8_name, vs);
3013 vs->discontinuity = 1;
3014 if (hls->init_time > 0) {
3015 av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time,"
3016 " hls_init_time value will have no effect\n");
3018 hls->recording_time = hls->time * AV_TIME_BASE;
3022 if ((ret = hls_start(s, vs)) < 0)
3028 hls_free_variant_streams(hls);
3029 for (i = 0; i < hls->nb_ccstreams; i++) {
3030 ClosedCaptionsStream *ccs = &hls->cc_streams[i];
3031 av_freep(&ccs->ccgroup);
3032 av_freep(&ccs->instreamid);
3033 av_freep(&ccs->language);
3035 av_freep(&hls->key_basename);
3036 av_freep(&hls->var_streams);
3037 av_freep(&hls->cc_streams);
3038 av_freep(&hls->master_m3u8_url);
3044 #define OFFSET(x) offsetof(HLSContext, x)
3045 #define E AV_OPT_FLAG_ENCODING_PARAM
3046 static const AVOption options[] = {
3047 {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
3048 {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
3049 {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E},
3050 {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
3051 {"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},
3052 {"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},
3053 {"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},
3055 {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3057 {"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},
3058 {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3059 {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3060 {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
3061 {"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},
3062 {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E},
3063 {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E},
3064 {"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},
3065 {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E},
3066 {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3067 {"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"},
3068 {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"},
3069 {"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"},
3070 {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E},
3071 {"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 },
3072 {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"},
3073 {"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"},
3074 {"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"},
3075 {"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"},
3076 {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"},
3077 {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"},
3078 {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"},
3079 {"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"},
3080 {"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"},
3081 {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"},
3082 {"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"},
3083 {"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"},
3084 {"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"},
3085 {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"},
3086 {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"},
3087 {"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"},
3088 #if FF_API_HLS_USE_LOCALTIME
3089 {"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 },
3091 {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3092 #if FF_API_HLS_USE_LOCALTIME
3093 {"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 },
3095 {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3096 {"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" },
3097 {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" },
3098 {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" },
3099 {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3100 {"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" },
3101 {"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" },
3102 {"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" },
3103 {"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" },
3104 {"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" },
3105 {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3106 {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3107 {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3108 {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
3109 {"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},
3110 {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
3111 {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
3112 {"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 },
3113 {"headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
3117 static const AVClass hls_class = {
3118 .class_name = "hls muxer",
3119 .item_name = av_default_item_name,
3121 .version = LIBAVUTIL_VERSION_INT,
3125 AVOutputFormat ff_hls_muxer = {
3127 .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"),
3128 .extensions = "m3u8",
3129 .priv_data_size = sizeof(HLSContext),
3130 .audio_codec = AV_CODEC_ID_AAC,
3131 .video_codec = AV_CODEC_ID_H264,
3132 .subtitle_codec = AV_CODEC_ID_WEBVTT,
3133 .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS,
3135 .write_header = hls_write_header,
3136 .write_packet = hls_write_packet,
3137 .write_trailer = hls_write_trailer,
3138 .priv_class = &hls_class,