#9205: Incorrect segment length in HLS child playlist
-------------------------------------+-------------------------------------
Reporter: Yash | Owner: (none)
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: unspecified | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Description changed by Yash:
Old description:
> Summary of the bug:
>
> I am creating an HLS stream with two resolutions using NVIDIA x264
> hardware encoder and FFmpeg is generating a segment with 0 bytes length
> after init segment in each video child playlist. An example of a child
> playlist is given below.
> How to reproduce:
> {{{
> % ffmpeg -loglevel verbose -hide_banner -vsync 0 -hwaccel cuvid
> -hwaccel_output_format cuda -c:v h264_cuvid -i wanted_1080p.mp4 -y
> -filter_complex
> "[0:v]hwdownload,format=nv12[0_v_cpu];[0_v_cpu]colorspace=irange=tv:range=tv:ispace=smpte170m:space=bt709:itrc=smpte170m:trc=bt709:iprimaries=smpte170m:primaries=bt709[init_processed];[init_processed]split=2[360p][720p];[360p]hwupload_cuda,scale_npp=640:360:interp_algo=lanczos[360pScaled];[720p]hwupload_cuda,scale_npp=1280:720:interp_algo=lanczos[720pScaled]"
> -hls_list_size 0 -hls_playlist_type vod -hls_flags
> single_file+independent_segments -hls_segment_type fmp4
> -hls_segment_filename %v.mp4 -hls_time 2 -master_pl_name 1.m3u8 -preset:v
> slow -tune:v hq -qmin:v 0 -bf:v 3 -b_ref_mode:v 2 -temporal_aq:v 1
> -i_qfactor:v 0.75 -b_qfactor:v 1.1 -color_primaries:v bt709 -color_trc:v
> bt709 -colorspace:v bt709 -color_range:v tv -g:v 48 -keyint_min:v 48
> -forced-idr:v 1 -rc-lookahead:v 0 -no-scenecut:v 1 -map "[360pScaled]"
> -map "[720pScaled]" -map 0:a:0 -map 0:a:0 -c:v:0 h264_nvenc -c:v:1
> h264_nvenc -b:v:0 1499k -b:v:1 2998k -maxrate:v:0 1499k -maxrate:v:1
> 2998k -bufsize:v:0 2998k -bufsize:v:1 5996k -c:a:0 aac -c:a:1 aac -b:a:0
> 96k -b:a:1 128k -var_stream_map
> "v:0,agroup:audio_96k,name:6088fbd10daf052b6b4770cb_0
> v:1,agroup:audio_128k,name:6088fbd10daf052b6b4770cb_1
> a:0,agroup:audio_96k,name:6088fbd10daf052b6b4770cb_en_96k,language:en
> a:1,agroup:audio_128k,name:6088fbd10daf052b6b4770cb_en_128k,language:en"
> -f hls %v.m3u8
> ffmpeg version 4.4
> built on ...
> Ubuntu 20.04 5.8.0-50-generic
> CUDA 11.1
> Video Codec SDK version 11.0.10.
> NVIDIA Driver Version: 460.73.01
> }}}
> 6088fbd10daf052b6b4770cb_0.m3u8
> {{{
> #EXTM3U
> #EXT-X-VERSION:7
> #EXT-X-TARGETDURATION:2
> #EXT-X-MEDIA-SEQUENCE:0
> #EXT-X-PLAYLIST-TYPE:VOD
> #EXT-X-INDEPENDENT-SEGMENTS
> #EXT-X-MAP:URI="6088fbd10daf052b6b4770cb_0.mp4",BYTERANGE="450404@0"
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:0@450404
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:359407@450404
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:378335@809811
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:393595@1188146
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:312733@1581741
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:472737@1894474
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:458984@2367211
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:303056@2826195
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:443777@3129251
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:322437@3573028
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:298911@3895465
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:440731@4194376
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:296200@4635107
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:279329@4931307
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:461384@5210636
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:336439@5672020
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:361420@6008459
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:505123@6369879
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:312565@6875002
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:424847@7187567
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:373050@7612414
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:216578@7985464
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:406338@8202042
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:447138@8608380
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:279981@9055518
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:473455@9335499
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:327288@9808954
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:367943@10136242
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:353278@10504185
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:365758@10857463
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:395408@11223221
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:398605@11618629
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:306673@12017234
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:447938@12323907
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:242570@12771845
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:441621@13014415
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:372231@13456036
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:301383@13828267
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:395551@14129650
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:347731@14525201
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:431139@14872932
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:350607@15304071
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:371273@15654678
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:399167@16025951
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:368923@16425118
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:352039@16794041
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:368835@17146080
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:359152@17514915
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:399644@17874067
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:379125@18273711
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:327327@18652836
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:349258@18980163
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:403436@19329421
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:380067@19732857
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:336270@20112924
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:396517@20449194
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:367553@20845711
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:352917@21213264
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:350773@21566181
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:358541@21916954
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:351009@22275495
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:354593@22626504
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:341483@22981097
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:362860@23322580
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:394479@23685440
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:314414@24079919
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:429449@24394333
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:305637@24823782
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:365426@25129419
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:349025@25494845
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:315904@25843870
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:336375@26159774
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:309084@26496149
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:410002@26805233
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:369675@27215235
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:340966@27584910
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:406987@27925876
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:349297@28332863
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:389513@28682160
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:415953@29071673
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:296876@29487626
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:326624@29784502
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:405860@30111126
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:403180@30516986
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:386960@30920166
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:503008@31307126
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:231643@31810134
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:376375@32041777
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:278625@32418152
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:477517@32696777
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:291691@33174294
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:442380@33465985
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:345327@33908365
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:388899@34253692
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:366061@34642591
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:363666@35008652
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:376127@35372318
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:341684@35748445
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:428634@36090129
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:357592@36518763
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:393469@36876355
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:361643@37269824
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> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:410598@37999315
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> #EXTINF:2.000000,
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> 6088fbd10daf052b6b4770cb_0.mp4
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> 6088fbd10daf052b6b4770cb_0.mp4
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> #EXTINF:2.000000,
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> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
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> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
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> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
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> #EXTINF:2.000000,
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> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
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> #EXTINF:2.000000,
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> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:367211@49442165
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:362858@49809376
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:438428@50172234
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:263071@50610662
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:357588@50873733
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:435096@51231321
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:404449@51666417
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:341266@52070866
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:390492@52412132
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:356190@52802624
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:381794@53158814
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:349213@53540608
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:358795@53889821
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:274732@54248616
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:409482@54523348
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:375520@54932830
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:391795@55308350
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:346604@55700145
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:345452@56046749
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:405545@56392201
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:343070@56797746
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:375896@57140816
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:352834@57516712
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:351409@57869546
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:365938@58220955
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:350242@58586893
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:332015@58937135
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:336267@59269150
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:387962@59605417
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:384604@59993379
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:239837@60377983
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:195648@60617820
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:190262@60813468
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:219223@61003730
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:179371@61222953
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:178498@61402324
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:2.000000,
> #EXT-X-BYTERANGE:216575@61580822
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXTINF:0.833333,
> #EXT-X-BYTERANGE:112029@61797397
> 6088fbd10daf052b6b4770cb_0.mp4
> #EXT-X-ENDLIST
> }}}
New description:
Summary of the bug:
I am creating an HLS stream with two resolutions using NVIDIA x264
hardware encoder and FFmpeg is generating a segment with 0 bytes length
after init segment in each video child playlist. An example of a child
playlist is given below.
How to reproduce:
{{{
% ffmpeg -loglevel verbose -hide_banner -vsync 0 -hwaccel cuvid
-hwaccel_output_format cuda -c:v h264_cuvid -i wanted_1080p.mp4 -y
-filter_complex
"[0:v]hwdownload,format=nv12[0_v_cpu];[0_v_cpu]colorspace=irange=tv:range=tv:ispace=smpte170m:space=bt709:itrc=smpte170m:trc=bt709:iprimaries=smpte170m:primaries=bt709[init_processed];[init_processed]split=2[360p][720p];[360p]hwupload_cuda,scale_npp=640:360:interp_algo=lanczos[360pScaled];[720p]hwupload_cuda,scale_npp=1280:720:interp_algo=lanczos[720pScaled]"
-hls_list_size 0 -hls_playlist_type vod -hls_flags
single_file+independent_segments -hls_segment_type fmp4
-hls_segment_filename %v.mp4 -hls_time 2 -master_pl_name 1.m3u8 -preset:v
slow -tune:v hq -qmin:v 0 -bf:v 3 -b_ref_mode:v 2 -temporal_aq:v 1
-i_qfactor:v 0.75 -b_qfactor:v 1.1 -color_primaries:v bt709 -color_trc:v
bt709 -colorspace:v bt709 -color_range:v tv -g:v 48 -keyint_min:v 48
-forced-idr:v 1 -rc-lookahead:v 0 -no-scenecut:v 1 -map "[360pScaled]"
-map "[720pScaled]" -map 0:a:0 -map 0:a:0 -c:v:0 h264_nvenc -c:v:1
h264_nvenc -b:v:0 1499k -b:v:1 2998k -maxrate:v:0 1499k -maxrate:v:1 2998k
-bufsize:v:0 2998k -bufsize:v:1 5996k -c:a:0 aac -c:a:1 aac -b:a:0 96k
-b:a:1 128k -var_stream_map
"v:0,agroup:audio_96k,name:6088fbd10daf052b6b4770cb_0
v:1,agroup:audio_128k,name:6088fbd10daf052b6b4770cb_1
a:0,agroup:audio_96k,name:6088fbd10daf052b6b4770cb_en_96k,language:en
a:1,agroup:audio_128k,name:6088fbd10daf052b6b4770cb_en_128k,language:en"
-f hls %v.m3u8
ffmpeg version 4.4
built on ...
Ubuntu 20.04 5.8.0-50-generic
CUDA 11.1
Video Codec SDK version 11.0.10.
NVIDIA Driver Version: 460.73.01
}}}
6088fbd10daf052b6b4770cb_0.m3u8
{{{
#EXTM3U
#EXT-X-VERSION:7
#EXT-X-TARGETDURATION:2
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-PLAYLIST-TYPE:VOD
#EXT-X-INDEPENDENT-SEGMENTS
#EXT-X-MAP:URI="6088fbd10daf052b6b4770cb_0.mp4",BYTERANGE="450404@0"
#EXTINF:2.000000,
#EXT-X-BYTERANGE:0@450404
6088fbd10daf052b6b4770cb_0.mp4
#EXTINF:2.000000,
#EXT-X-BYTERANGE:359407@450404
6088fbd10daf052b6b4770cb_0.mp4
}}}
Truncated child playlist file, please find the whole file in the
attachments.
--
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9205#comment:1>
FFmpeg <https://ffmpeg.org>
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