[FFmpeg-trac] #7798(undetermined:new): hls muxer often generates segments shorter than -hls_time
FFmpeg
trac at avcodec.org
Sat Mar 16 22:27:55 EET 2019
#7798: hls muxer often generates segments shorter than -hls_time
-------------------------------------+-------------------------------------
Reporter: JoshuaWalsh | Owner:
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: git-master | Resolution:
Keywords: hls | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by JoshuaWalsh):
With GOP and fps, this time using Windows binaries:
{{{
PS D:\> ffmpeg -nostdin -i ./4minutetest.mp4 -vcodec libx264 -g 125 -r:v
25 -preset veryfast -acodec aac -b:a 128k -hls_init_time 5 -hls_time 5
-hls_list_size 5 -hls_allow_cache 0 ./output/index.m3u8
ffmpeg version N-93120-ga84af760b8 Copyright (c) 2000-2019 the FFmpeg
developers
built with gcc 8.2.1 (GCC) 20190212
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-
libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
--enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
--enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
--enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
--enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx
--enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-
nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 26.100 / 56. 26.100
libavcodec 58. 47.100 / 58. 47.100
libavformat 58. 26.101 / 58. 26.101
libavdevice 58. 6.101 / 58. 6.101
libavfilter 7. 48.100 / 7. 48.100
libswscale 5. 4.100 / 5. 4.100
libswresample 3. 4.100 / 3. 4.100
libpostproc 55. 4.100 / 55. 4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './4minutetest.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.83.100
Duration: 00:04:00.02, start: 0.000000, bitrate: 5381 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
1920x1080 [SAR 1:1 DAR 16:9], 5033 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
(default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1,
fltp, 342 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
[libx264 @ 0000019097632080] using SAR=1/1
[libx264 @ 0000019097632080] using cpu capabilities: MMX2 SSE2Fast SSSE3
SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000019097632080] profile High, level 4.0, 4:2:0, 8-bit
[libx264 @ 0000019097632080] 264 - core 157 r2935 545de2f - H.264/MPEG-4
AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html -
options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2
psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0
8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=24
lookahead_threads=8 sliced_threads=0 nr=0 decimate=1 interlaced=0
bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
b_bias=0 direct=1 weightb=1 open_gop=0 weightp=1 keyint=125 keyint_min=12
scenecut=40 intra_refresh=0 rc_lookahead=10 rc=crf mbtree=1 crf=23.0
qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[hls @ 0000019097a81500] Opening './output/index0.ts' for writing
Output #0, hls, to './output/index.m3u8':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.26.101
Stream #0:0(und): Video: h264 (libx264), yuv420p, 1920x1080 [SAR 1:1
DAR 16:9], q=-1--1, 25 fps, 90k tbn, 25 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc58.47.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(eng): Audio: aac (LC), 48000 Hz, 5.1, fltp, 128 kb/s
(default)
Metadata:
handler_name : SoundHandler
encoder : Lavc58.47.100 aac
[hls @ 0000019097a81500] Opening './output/index1.ts' for
writingspeed=8.83x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index2.ts' for
writingspeed=6.93x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index3.ts' for
writingspeed=6.83x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index4.ts' for
writingspeed=6.46x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index5.ts' for
writingspeed=6.44x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index6.ts' for
writingspeed=6.86x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index7.ts' for writingspeed=
7.2x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index8.ts' for
writingspeed=7.33x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index9.ts' for
writingspeed=7.14x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index10.ts' for
writingpeed=6.97x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index11.ts' for
writingpeed=6.54x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index12.ts' for
writingpeed=6.46x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index13.ts' for
writingpeed=6.43x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index14.ts' for
writingpeed=6.47x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index15.ts' for
writingpeed=6.56x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index16.ts' for
writingpeed=6.57x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index17.ts' for
writingpeed=6.54x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index18.ts' for
writingpeed=6.54x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index19.ts' for
writingpeed=6.59x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index20.ts' for
writingpeed=6.56x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index21.ts' for
writingpeed=6.55x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index22.ts' for
writingpeed=6.57x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index23.ts' for
writingpeed=6.55x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index24.ts' for
writingpeed=6.62x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index25.ts' for
writingpeed=6.68x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index26.ts' for
writingpeed=6.76x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index27.ts' for
writingpeed=6.78x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index28.ts' for
writingpeed=6.74x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index29.ts' for
writingpeed=6.69x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index30.ts' for
writingpeed=6.65x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index31.ts' for
writingpeed=6.68x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index32.ts' for
writingpeed=6.73x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index33.ts' for
writingpeed=6.79x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index34.ts' for
writingpeed=6.78x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index35.ts' for writing
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index36.ts' for
writingpeed=6.75x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index37.ts' for
writingpeed=6.68x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index38.ts' for
writingpeed=6.66x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index39.ts' for
writingpeed=6.68x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index40.ts' for
writingpeed=6.74x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index41.ts' for
writingpeed=6.65x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index42.ts' for
writingpeed=6.62x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index43.ts' for
writingpeed=6.65x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index44.ts' for
writingpeed=6.61x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index45.ts' for
writingpeed=6.63x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index46.ts' for
writingpeed=6.59x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index47.ts' for
writingpeed=6.59x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index48.ts' for
writingpeed=6.61x
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for writing
[hls @ 0000019097a81500] Opening './output/index.m3u8.tmp' for
writing=6.63x
frame= 6000 fps=165 q=-1.0 Lsize=N/A time=00:04:00.00 bitrate=N/A
speed=6.62x
video:122822kB audio:3905kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: unknown
[libx264 @ 0000019097632080] frame I:80 Avg QP:19.91 size:115814
[libx264 @ 0000019097632080] frame P:2061 Avg QP:22.66 size: 36890
[libx264 @ 0000019097632080] frame B:3859 Avg QP:24.85 size: 10488
[libx264 @ 0000019097632080] consecutive B-frames: 5.3% 25.5% 4.0% 65.1%
[libx264 @ 0000019097632080] mb I I16..4: 15.3% 55.1% 29.6%
[libx264 @ 0000019097632080] mb P I16..4: 9.8% 21.2% 2.5% P16..4:
22.8% 9.0% 4.1% 0.0% 0.0% skip:30.7%
[libx264 @ 0000019097632080] mb B I16..4: 1.6% 3.0% 0.3% B16..8:
13.2% 3.7% 0.5% direct: 3.8% skip:74.0% L0:38.7% L1:44.9% BI:16.4%
[libx264 @ 0000019097632080] 8x8 transform intra:62.4% inter:56.8%
[libx264 @ 0000019097632080] coded y,uvDC,uvAC intra: 51.6% 35.9% 4.3%
inter: 6.7% 7.1% 0.1%
[libx264 @ 0000019097632080] i16 v,h,dc,p: 35% 41% 14% 11%
[libx264 @ 0000019097632080] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 31% 20%
4% 4% 4% 4% 4% 5%
[libx264 @ 0000019097632080] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 60% 7%
3% 3% 3% 3% 3% 3%
[libx264 @ 0000019097632080] i8c dc,h,v,p: 57% 19% 20% 4%
[libx264 @ 0000019097632080] Weighted P-Frames: Y:3.0% UV:1.5%
[libx264 @ 0000019097632080] kb/s:4192.30
[aac @ 0000019097c40980] Qavg: 693.003
PS D:\> Get-Content .\output\index.m3u8
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-ALLOW-CACHE:NO
#EXT-X-TARGETDURATION:6
#EXT-X-MEDIA-SEQUENCE:44
#EXTINF:5.000000,
index44.ts
#EXTINF:4.360000,
index45.ts
#EXTINF:5.520000,
index46.ts
#EXTINF:5.000000,
index47.ts
#EXTINF:4.160000,
index48.ts
#EXT-X-ENDLIST
}}}
Segment duration ranges from 2 seconds to 9 seconds.
(Also, setting GOP shouldn't be necessary based on the documentation's
description of -hls_time)
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7798#comment:4>
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