2016-08-31 1:48 GMT+08:00 Aman Gupta <ffm...@tmm1.net>: > On Fri, Aug 26, 2016 at 2:06 AM, Steven Liu <lingjiujia...@gmail.com> > wrote: > > > 2016-08-26 16:58 GMT+08:00 Ibrahim Tachijian <bar...@netsat.se>: > > > > > Thanks this actually does what I expected it to do. > > > For me this option will help a lot, and we would really be interested > in > > > this eventually reaching git. > > > > > > Thanks to Steven Liu's patch we will be able to use this to start live > > > streams faster. Great job! > > > > > > Below follows what command I ran and the output m3u8 playlist. > > > > > > /root/ffmpeg_patched -analyzeduration 1000000 -i udp://MCAST_ADDR:3301 > > -map > > > 0:0 -map 0:1 -c:v libx264 -preset superfast -g 25 -b:v 900k -maxrate > 900k > > > -bufsize 2000k -filter:v yadif -c:a libfdk_aac -b:a 64k -hls_time 5 > > > *-hls_init_time > > > 1* -hls_list_size 10 -hls_allow_cache 0 -hls_flags delete_segments -f > hls > > > /tmp/playlist.m3u8 > > > > > > The output M3U8 of patched ffmpeg: > > > > > > #EXTM3U > > > #EXT-X-VERSION:3 > > > #EXT-X-ALLOW-CACHE:NO > > > #EXT-X-TARGETDURATION:5 > > > #EXT-X-MEDIA-SEQUENCE:3 > > > #EXTINF:1.000000, > > > playlist3.ts > > > #EXTINF:1.000000, > > > playlist4.ts > > > #EXTINF:1.000000, > > > playlist5.ts > > > #EXTINF:1.000000, > > > playlist6.ts > > > #EXTINF:1.000000, > > > playlist7.ts > > > #EXTINF:1.000000, > > > playlist8.ts > > > #EXTINF:1.600000, > > > playlist9.ts > > > #EXTINF:1.000000, > > > playlist10.ts > > > #EXTINF:4.000000, > > > playlist11.ts > > > #EXTINF:5.000000, > > > playlist12.ts > > > > > > > > > On Fri, Aug 26, 2016 at 8:37 AM Steven Liu <lingjiujia...@gmail.com> > > > wrote: > > > > > > > 2016-08-26 14:00 GMT+08:00 Steven Liu <lingjiujia...@gmail.com>: > > > > > > > > > > > > > > > > > > > 2016-08-26 10:34 GMT+08:00 Ibrahim Tachijian <bar...@netsat.se>: > > > > > > > > > >> In my use case scenario I only need it for the very first couple > of > > > > >> segments. > > > > >> After 5 segments it is not a problem anymore to have 5 second > > segments > > > > >> only. > > > > >> > > > > >> > > > > >> > > > > >> On Fri, Aug 26, 2016 at 4:25 AM Steven Liu < > lingjiujia...@gmail.com > > > > > > > >> wrote: > > > > >> > > > > >> > 2016-08-26 10:10 GMT+08:00 Ibrahim Tachijian <bar...@netsat.se > >: > > > > >> > > > > > >> > > yes that is correct Steven. > > > > >> > > > > > > >> > > On Fri, Aug 26, 2016 at 3:41 AM Steven Liu < > > > lingjiujia...@gmail.com > > > > > > > > > >> > > wrote: > > > > >> > > > > > > >> > > > 2016-08-26 8:17 GMT+08:00 Ibrahim Tachijian < > bar...@netsat.se > > >: > > > > >> > > > > > > > >> > > > > Steven, I am not sure you understood me correctly or > > perhaps I > > > > did > > > > >> > not > > > > >> > > > > explain myself optimally. > > > > >> > > > > > > > > >> > > > > We still want to split by keyframe in a normal fashion. > But, > > > for > > > > >> > > example, > > > > >> > > > > would like the first 5 segments to have an "hls_time" of > 1s > > > and > > > > >> the > > > > >> > > rest > > > > >> > > > of > > > > >> > > > > the segments after the first 5 to have an "hls_time" of > 5s. > > > > >> > > > > > > > > >> > > > > An made up option would be (hls_time_initial > Seconds,Number) > > > > >> > > > > > > > > >> > > > > - "-hls_time_initial 1,5 -hls_time 5" > > > > >> > > > > > > > > >> > > > > The output playlist would contain segments (split at > > > keyframes) > > > > 5 > > > > >> > > > segments > > > > >> > > > > of length 1s and then any segment after the initial 5 > > segment > > > > >> would > > > > >> > be > > > > >> > > > 5s. > > > > >> > > > > > > > > >> > > > > Is it clear what I am trying to explain? > > > > >> > > > > > > > > >> > > > > What do you think? Do you know how this can be achieved? > > > > >> > > > > > > > > >> > > > > Thanks, > > > > >> > > > > > > > > >> > > > > On Fri, Aug 26, 2016 at 2:06 AM Steven Liu < > > > > >> lingjiujia...@gmail.com> > > > > >> > > > > wrote: > > > > >> > > > > > > > > >> > > > > > 2016-08-26 7:39 GMT+08:00 Ibrahim Tachijian < > > > bar...@netsat.se > > > > >: > > > > >> > > > > > > > > > >> > > > > > > Hello, > > > > >> > > > > > > > > > > >> > > > > > > I've been thinking about an option for "hls_time" that > > is > > > > not > > > > >> > > > currently > > > > >> > > > > > > supported by FFMpeg and I would like feedback to if > some > > > of > > > > >> you > > > > >> > may > > > > >> > > > > think > > > > >> > > > > > > this is useful or utterly unnecessary. > > > > >> > > > > > > > > > > >> > > > > > > I find scenarios where we sometimes want to create an > > HLS > > > > >> output > > > > >> > > and > > > > >> > > > > > would > > > > >> > > > > > > like the *first couple of segments* to be shorter than > > the > > > > >> *rest > > > > >> > of > > > > >> > > > the > > > > >> > > > > > > segments.* > > > > >> > > > > > > > > > > >> > > > > > > For example starting off with 1s segments up to N > > segments > > > > >> then > > > > >> > > > switch > > > > >> > > > > to > > > > >> > > > > > > 5s segments. > > > > >> > > > > > > > > > > >> > > > > > > The reasoning is simply to have the playlist.m3u8 and > > > first > > > > >> > segment > > > > >> > > > > > > available *asap.* > > > > >> > > > > > > > > > > >> > > > > > > What do you think? Do you know how this can be > achieved? > > > > >> > > > > > > > > > > >> > > > > > > Thanks, > > > > >> > > > > > > > > > > >> > > > > > > > > > >> > > > > > ffmpeg split segment use hlsenc by keyframe, if you want > > to > > > > >> split > > > > >> > > > segment > > > > >> > > > > > *ASAP*, > > > > >> > > > > > you can try set your streaming *GOP(Group Of Picture)* > > > > shorter, > > > > >> > > > > > for example: gop_size = 60, c->time_base = > > > > (AVRational){1,60}; > > > > >> > > > > > in command line : -r:v 60 -g 60 > > > > >> > > > > > > > > > >> > > > > > if can accept split segment at non-keyframe, you can use > > > > >> hls_time > > > > >> > and > > > > >> > > > > > hls_flags split_by_time. > > > > >> > > > > > _______________________________________________ > > > > >> > > > > > > > > >> > > > you mean: > > > > >> > > > > > > > >> > > > segment-0.ts,segment-1.ts,segment-2.ts,segment-3.ts, > > > segment-4.ts > > > > >> these > > > > >> > > 5 > > > > >> > > > segments duration is 1s > > > > >> > > > and > > > > >> > > > segment-5.ts,segment-6.ts,segment-7.ts ...... these segment > > > > >> duration is > > > > >> > > 5 > > > > >> > > > or set by hls_time > > > > >> > > > Is that right i understand? > > > > >> > > > > > > >> > > > > > > >> > OK , Thanks. > > > > >> > That a good idea, but i have a question: > > > > >> > when ffmpeg update the segment list after 10 segments, there > have > > a > > > > new > > > > >> > user to play the hls playlist, the m3u8 segments every ts > > segments' > > > > >> > duration is the 5s. > > > > >> > So do you want exec a new ffmpeg when every one play the hls > > > playlist > > > > ? > > > > >> > > > > >> > > > > > Dose this patch can fix your request? > > > > > > > > > > > > > > > update patch > > > > > > > > > > > > Test process: > > > > localhost:ffmpeg liuqi$ ./ffmpeg -v verbose -re -i > > > > ~/Movies/objectC/facebook.mp4 -c copy -f hls -hls_time 3 > > -hls_list_size 3 > > > > -hls_flags split_by_time aaaa_output.m3u8 > > > > ffmpeg version N-81462-gbcd1153 Copyright (c) 2000-2016 the FFmpeg > > > > developers > > > > built with Apple LLVM version 7.3.0 (clang-703.0.31) > > > > configuration: --enable-fontconfig --enable-gpl --enable-libass > > > > --enable-libbluray --enable-libfreetype --enable-libmp3lame > > > > --enable-libspeex --enable-libx264 --enable-libx265 --enable-version3 > > > > libavutil 55. 29.100 / 55. 29.100 > > > > libavcodec 57. 54.100 / 57. 54.100 > > > > libavformat 57. 48.100 / 57. 48.100 > > > > libavdevice 57. 0.102 / 57. 0.102 > > > > libavfilter 6. 55.100 / 6. 55.100 > > > > libswscale 4. 1.100 / 4. 1.100 > > > > libswresample 2. 1.100 / 2. 1.100 > > > > libpostproc 54. 0.100 / 54. 0.100 > > > > [h264 @ 0x7f94f1813c00] Reinit context to 1280x720, pix_fmt: yuv420p > > > > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from > > > > '/Users/liuqi/Movies/objectC/facebook.mp4': > > > > Metadata: > > > > major_brand : isom > > > > minor_version : 1 > > > > compatible_brands: isomavc1 > > > > creation_time : 2015-02-02 18:19:19 > > > > Duration: 00:45:02.06, start: 0.000000, bitrate: 2708 kb/s > > > > Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / > > > > 0x31637661), yuv420p, 1280x714 (1280x720) [SAR 1:1 DAR 640:357], 2576 > > > kb/s, > > > > 25 fps, 25 tbr, 25k tbn, 50 tbc (default) > > > > Metadata: > > > > creation_time : 2015-02-02 18:19:19 > > > > handler_name : GPAC ISO Video Handler > > > > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, > > > > stereo, fltp, 127 kb/s (default) > > > > Metadata: > > > > creation_time : 2015-02-02 18:19:23 > > > > handler_name : GPAC ISO Audio Handler > > > > [hls @ 0x7f94f3004800] Using AVStream.codec to pass codec parameters > to > > > > muxers is deprecated, use AVStream.codecpar instead. > > > > Last message repeated 1 times > > > > [mpegts @ 0x7f94f180b800] muxrate VBR, pcr every 5 pkts, sdt every > > > > 2147483647, pat/pmt every 2147483647 pkts > > > > Output #0, hls, to 'aaaa_output.m3u8': > > > > Metadata: > > > > major_brand : isom > > > > minor_version : 1 > > > > compatible_brands: isomavc1 > > > > encoder : Lavf57.48.100 > > > > Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / > > > > 0x31637661), yuv420p, 1280x714 (0x0) [SAR 1:1 DAR 640:357], q=2-31, > > 2576 > > > > kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default) > > > > Metadata: > > > > creation_time : 2015-02-02 18:19:19 > > > > handler_name : GPAC ISO Video Handler > > > > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, > > > > stereo, 127 kb/s (default) > > > > Metadata: > > > > creation_time : 2015-02-02 18:19:23 > > > > handler_name : GPAC ISO Audio Handler > > > > Stream mapping: > > > > Stream #0:0 -> #0:0 (copy) > > > > Stream #0:1 -> #0:1 (copy) > > > > Press [q] to stop, [?] for help > > > > Automatically inserted bitstream filter 'h264_mp4toannexb'; args='' > > > > [hls @ 0x7f94f3004800] EXT-X-MEDIA-SEQUENCE:00:03.04 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7f94f3004800] EXT-X-MEDIA-SEQUENCE:00:06.12 bitrate=N/A > > > > speed=1.01x > > > > [hls @ 0x7f94f3004800] EXT-X-MEDIA-SEQUENCE:00:08.64 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7f94f3004800] EXT-X-MEDIA-SEQUENCE:10:11.73 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7f94f3004800] EXT-X-MEDIA-SEQUENCE:20:14.74 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7f94f3004800] EXT-X-MEDIA-SEQUENCE:30:17.76 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7f94f3004800] EXT-X-MEDIA-SEQUENCE:40:20.84 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7f94f3004800] EXT-X-MEDIA-SEQUENCE:50:23.89 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7f94f3004800] EXT-X-MEDIA-SEQUENCE:6 > > > > frame= 601 fps= 25 q=-1.0 Lsize=N/A time=00:00:24.29 bitrate=N/A > > speed= > > > > 1x > > > > video:7099kB audio:370kB subtitle:0kB other streams:0kB global > > > headers:0kB > > > > muxing overhead: unknown > > > > Input file #0 (/Users/liuqi/Movies/objectC/facebook.mp4): > > > > Input stream #0:0 (video): 601 packets read (7269480 bytes); > > > > Input stream #0:1 (audio): 1139 packets read (379370 bytes); > > > > Total: 1740 packets (7648850 bytes) demuxed > > > > Output file #0 (aaaa_output.m3u8): > > > > Output stream #0:0 (video): 601 packets muxed (7269480 bytes); > > > > Output stream #0:1 (audio): 1139 packets muxed (379370 bytes); > > > > Total: 1740 packets (7648850 bytes) muxed > > > > localhost:ffmpeg liuqi$ > > > > localhost:ffmpeg liuqi$ ./ffmpeg -v verbose -re -i > > > > ~/Movies/objectC/facebook.mp4 -c copy -f hls -hls_init_time 1 > > -hls_time 5 > > > > -hls_flags split_by_time output_test.m3u8 > > > > ffmpeg version N-81462-gbcd1153 Copyright (c) 2000-2016 the FFmpeg > > > > developers > > > > built with Apple LLVM version 7.3.0 (clang-703.0.31) > > > > configuration: --enable-fontconfig --enable-gpl --enable-libass > > > > --enable-libbluray --enable-libfreetype --enable-libmp3lame > > > > --enable-libspeex --enable-libx264 --enable-libx265 --enable-version3 > > > > libavutil 55. 29.100 / 55. 29.100 > > > > libavcodec 57. 54.100 / 57. 54.100 > > > > libavformat 57. 48.100 / 57. 48.100 > > > > libavdevice 57. 0.102 / 57. 0.102 > > > > libavfilter 6. 55.100 / 6. 55.100 > > > > libswscale 4. 1.100 / 4. 1.100 > > > > libswresample 2. 1.100 / 2. 1.100 > > > > libpostproc 54. 0.100 / 54. 0.100 > > > > [h264 @ 0x7fedf4017600] Reinit context to 1280x720, pix_fmt: yuv420p > > > > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from > > > > '/Users/liuqi/Movies/objectC/facebook.mp4': > > > > Metadata: > > > > major_brand : isom > > > > minor_version : 1 > > > > compatible_brands: isomavc1 > > > > creation_time : 2015-02-02 18:19:19 > > > > Duration: 00:45:02.06, start: 0.000000, bitrate: 2708 kb/s > > > > Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / > > > > 0x31637661), yuv420p, 1280x714 (1280x720) [SAR 1:1 DAR 640:357], 2576 > > > kb/s, > > > > 25 fps, 25 tbr, 25k tbn, 50 tbc (default) > > > > Metadata: > > > > creation_time : 2015-02-02 18:19:19 > > > > handler_name : GPAC ISO Video Handler > > > > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, > > > > stereo, fltp, 127 kb/s (default) > > > > Metadata: > > > > creation_time : 2015-02-02 18:19:23 > > > > handler_name : GPAC ISO Audio Handler > > > > [hls @ 0x7fedf4000600] Using AVStream.codec to pass codec parameters > to > > > > muxers is deprecated, use AVStream.codecpar instead. > > > > Last message repeated 1 times > > > > [mpegts @ 0x7fedf3008a00] muxrate VBR, pcr every 5 pkts, sdt every > > > > 2147483647, pat/pmt every 2147483647 pkts > > > > Output #0, hls, to 'output_test.m3u8': > > > > Metadata: > > > > major_brand : isom > > > > minor_version : 1 > > > > compatible_brands: isomavc1 > > > > encoder : Lavf57.48.100 > > > > Stream #0:0(und): Video: h264 (High), 1 reference frame (avc1 / > > > > 0x31637661), yuv420p, 1280x714 (0x0) [SAR 1:1 DAR 640:357], q=2-31, > > 2576 > > > > kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default) > > > > Metadata: > > > > creation_time : 2015-02-02 18:19:19 > > > > handler_name : GPAC ISO Video Handler > > > > Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, > > > > stereo, 127 kb/s (default) > > > > Metadata: > > > > creation_time : 2015-02-02 18:19:23 > > > > handler_name : GPAC ISO Audio Handler > > > > Stream mapping: > > > > Stream #0:0 -> #0:0 (copy) > > > > Stream #0:1 -> #0:1 (copy) > > > > Press [q] to stop, [?] for help > > > > Automatically inserted bitstream filter 'h264_mp4toannexb'; args='' > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:00:00.52 bitrate=N/A > > > > speed=1.02x > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:00:01.56 bitrate=N/A > > > > speed=1.03x > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:00:03.08 bitrate=N/A > > > > speed=1.01x > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:00:03.56 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:00:05.12 bitrate=N/A > > > > speed=1.01x > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:10:06.12 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:20:09.70 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:30:14.80 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:40:19.88 bitrate=N/A > speed= > > > > 1x > > > > [hls @ 0x7fedf4000600] EXT-X-MEDIA-SEQUENCE:50:20.90 bitrate=N/A > speed= > > > > 1x > > > > frame= 529 fps= 25 q=-1.0 Lsize=N/A time=00:00:21.35 bitrate=N/A > > speed= > > > > 1x > > > > video:6506kB audio:324kB subtitle:0kB other streams:0kB global > > > headers:0kB > > > > muxing overhead: unknown > > > > Input file #0 (/Users/liuqi/Movies/objectC/facebook.mp4): > > > > Input stream #0:0 (video): 529 packets read (6661710 bytes); > > > > Input stream #0:1 (audio): 1001 packets read (332091 bytes); > > > > Total: 1530 packets (6993801 bytes) demuxed > > > > Output file #0 (output_test.m3u8): > > > > Output stream #0:0 (video): 529 packets muxed (6661710 bytes); > > > > Output stream #0:1 (audio): 1001 packets muxed (332091 bytes); > > > > Total: 1530 packets (6993801 bytes) muxed > > > > localhost:ffmpeg liuqi$ > > > > > > > > > > > > And recover segments duration time by hls_time after init hls window. > > > > This is reuqested by Ibrahim Tachijian > > > > > > > > Signed-off-by: LiuQi <li...@gosun.com> > > > > --- > > > > libavformat/hlsenc.c | 14 +++++++++++++- > > > > 1 file changed, 13 insertions(+), 1 deletion(-) > > > > > > > > diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c > > > > index e65f002..f5ceb60 100644 > > > > --- a/libavformat/hlsenc.c > > > > +++ b/libavformat/hlsenc.c > > > > @@ -85,6 +85,7 @@ typedef struct HLSContext { > > > > AVFormatContext *vtt_avf; > > > > > > > > float time; // Set by a private option. > > > > + float init_time; // Set by a private option. > > > > int max_nb_segments; // Set by a private option. > > > > int wrap; // Set by a private option. > > > > uint32_t flags; // enum HLSFlags > > > > @@ -706,7 +707,7 @@ static int hls_write_header(AVFormatContext *s) > > > > int vtt_basename_size; > > > > > > > > hls->sequence = hls->start_sequence; > > > > - hls->recording_time = hls->time * AV_TIME_BASE; > > > > + hls->recording_time = (hls->init_time ? hls->init_time : > > hls->time) > > > * > > > > AV_TIME_BASE; > > > > hls->start_pts = AV_NOPTS_VALUE; > > > > > > > > if (hls->format_options_str) { > > > > @@ -860,9 +861,19 @@ static int hls_write_packet(AVFormatContext *s, > > > > AVPacket *pkt) > > > > AVStream *st = s->streams[pkt->stream_index]; > > > > int64_t end_pts = hls->recording_time * hls->number; > > > > int is_ref_pkt = 1; > > > > + int init_list_dur = 0; > > > > + int after_init_list_dur = 0; > > > > int ret, can_split = 1; > > > > int stream_index = 0; > > > > > > > > + if (hls->sequence - hls->nb_entries > hls->start_sequence && > > > > hls->init_time > 0) { > > > > + /* reset end_pts, hls->recording_time at end of the init hls > > > list > > > > */ > > > > + init_list_dur = hls->init_time * hls->nb_entries * > > AV_TIME_BASE; > > > > + after_init_list_dur = (hls->sequence - hls->nb_entries ) * > > > > hls->time * AV_TIME_BASE; > > > > + hls->recording_time = hls->time * AV_TIME_BASE; > > > > + end_pts = init_list_dur + after_init_list_dur ; > > > > + } > > > > + > > > > if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) { > > > > oc = hls->vtt_avf; > > > > stream_index = 0; > > > > @@ -972,6 +983,7 @@ static int hls_write_trailer(struct > AVFormatContext > > > *s) > > > > static const AVOption options[] = { > > > > {"start_number", "set first number in the sequence", > > > > OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, > > > INT64_MAX, > > > > E}, > > > > {"hls_time", "set segment length in seconds", > > > > OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E}, > > > > + {"hls_init_time", "set segment length in seconds at init list", > > > > OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, > > FLT_MAX, > > > > E}, > > > > {"hls_list_size", "set maximum number of playlist entries", > > > > OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, > > > > INT_MAX, E}, > > > > {"hls_ts_options","set hls mpegts list of options for the > > container > > > > format used for hls", OFFSET(format_options_str), AV_OPT_TYPE_STRING, > > > {.str > > > > = NULL}, 0, 0, E}, > > > > {"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}, > > > > -- > > > > 2.7.4 (Apple Git-66) > > > > > > > > Ok, This function look good to me to. i will sent this patch to maillist > in > > a new mail. > > > > This is a very useful patchset for live streams, but I think it is > confusing that the "hls_init_time" is used for the entirety > of "hls_list_size". > > My understanding of the intention here is to speed up playback on Apple > devices, which will wait for the first three segments to appear before > beginning playback. > > I think it makes more sense to add another "hls_init_size" option that can > be set to 3, independently of "hls_list_size". > > Aman > > I've test on hls_init_time, It's ok, but there have a problem at first window of the m3u8 list to the second window list segment. maybe it need a warning to tell user set the hls_init_time's value and hls_time's value don't large than ((hls_time's value - hls_init_time's value) / 2) > hls_init_time
And you said it's need hls_init_size, i think that's no need, because this can be used for the new hls users' request, for example: 1. first one request hls, make a new m3u8 list with this option (hls_init_time) 2. the second one request hls, make a new m3u8 list with this option (hls_init_time) 3. the third one request hls, make a new m3u8 list with this option (hls_init_time) If i make a mistake with your intention, please make an example here. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel