[FFmpeg-trac] #9152(undetermined:new): FFmpeg doesn't stop after it has written the correct output file

FFmpeg trac at avcodec.org
Sat Mar 13 19:21:29 EET 2021


#9152: FFmpeg doesn't stop after it has written the correct output file
-------------------------------------+-------------------------------------
             Reporter:  mkoch        |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 I just created a special effect which shows several optical sound tracks,
 like in cine film.
 The output video is perfectly ok and has the correct length 20s. But
 FFmpeg doesn't stop after it has written the output file. I have to
 terminate it with ctrl-c, and I don't understand why.

 The problem can be reproduced with some audio input files, but not with
 all. This input file can be used for reproducing:

 ffmpeg -f lavfi -i "sine=1k:b=2,channelmap=0|0" -t 20 -y sine.mp3

 This is the command line for the special effect:

 ffmpeg -i sine.mp3 -lavfi
 "asplit=4[a0][a1][a2][a3];[a0]asplit[b0][c0];[a1]adelay=0.05:all=1,volume='gt(t,5)':eval=frame,asplit[b1][c1];[a2]adelay=0.1:all=1,volume='gt(t,10)':eval=frame,asplit[b2][c2];[a3]adelay=0.15:all=1,volume='gt(t,15)':eval=frame,asplit[b3][c3];[b0]showwaves=mode=cline:split_channels=true:s=1080x480:colors=white[v0];[b1]showwaves=mode=cline:split_channels=true:s=1080x480:colors=white[v1];[b2]showwaves=mode=cline:split_channels=true:s=1080x480:colors=white[v2];[b3]showwaves=mode=cline:split_channels=true:s=1080x480:colors=white[v3];[v0][v1][v2][v3]vstack=4,transpose;[c0][c1][c2][c3]amix=4"
 -y out.mp4

 The console outputs are below.


 C:\Users\astro\Desktop>ffmpeg -f lavfi -i "sine=1k:b=2,channelmap=0|0"
 -t 20 -y sine.mp3
 ffmpeg version 2021-03-09-git-c35e456f54-essentials_build-www.gyan.dev
 Copyright (c) 2000-2021 the FFmpeg developers
    built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
    configuration: --enable-gpl --enable-version3 --enable-static
 --disable-w32threads --disable-autodetect --enable-fontconfig
 --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp
 --enable-lzma --enable-zlib --enable-libsrt --enable-libssh
 --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp
 --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom
 --enable-libopenjpeg --enable-libvpx --enable-libass
 --enable-libfreetype --enable-libfribidi --enable-libvidstab
 --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm
 --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc
 --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libgme
 --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame
 --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm
 --enable-libopencore-amrnb --enable-libopus --enable-libspeex
 --enable-libvorbis --enable-librubberband
    libavutil      56. 67.100 / 56. 67.100
    libavcodec     58.129.100 / 58.129.100
    libavformat    58. 71.100 / 58. 71.100
    libavdevice    58. 12.100 / 58. 12.100
    libavfilter     7.109.100 /  7.109.100
    libswscale      5.  8.100 /  5.  8.100
    libswresample   3.  8.100 /  3.  8.100
    libpostproc    55.  8.100 / 55.  8.100
 Input #0, lavfi, from 'sine=1k:b=2,channelmap=0|0':
    Duration: N/A, start: 0.000000, bitrate: 1411 kb/s
    Stream #0:0: Audio: pcm_s16le, 44100 Hz, stereo, s16, 1411 kb/s
 Stream mapping:
    Stream #0:0 -> #0:0 (pcm_s16le (native) -> mp3 (libmp3lame))
 Press [q] to stop, [?] for help
 Output #0, mp3, to 'sine.mp3':
    Metadata:
      TSSE            : Lavf58.71.100
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p
      Metadata:
        encoder         : Lavc58.129.100 libmp3lame
 size=     313kB time=00:00:19.98 bitrate= 128.4kbits/s speed= 120x
 video:0kB audio:313kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.078921%

 C:\Users\astro\Desktop>ffmpeg -i sine.mp3 -lavfi
 "asplit=4[a0][a1][a2][a3];[a0]asplit[b0][c0];[a1]adelay=0.05:all=1,volume='gt(t,5)':eval=frame,asplit[b1][c1];[a2]adelay=0.1:all=1,volume='gt(t,10)':eval=frame,asplit[b2][c2];[a3]adelay=0.15:all=1,volume='gt(t,15)':eval=frame,asplit[b3][c3];[b0]showwaves=mode=cline:split_channels=true:s=1080x480:colors=white[v0];[b1]showwaves=mode=cline:split_channels=true:s=1080x480:colors=white[v1];[b2]showwaves=mode=cline:split_channels=true:s=1080x480:colors=white[v2];[b3]showwaves=mode=cline:split_channels=true:s=1080x480:colors=white[v3];[v0][v1][v2][v3]vstack=4,transpose;[c0][c1][c2][c3]amix=4"
 -y out.mp4
 ffmpeg version 2021-03-09-git-c35e456f54-essentials_build-www.gyan.dev
 Copyright (c) 2000-2021 the FFmpeg developers
    built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
    configuration: --enable-gpl --enable-version3 --enable-static
 --disable-w32threads --disable-autodetect --enable-fontconfig
 --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp
 --enable-lzma --enable-zlib --enable-libsrt --enable-libssh
 --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp
 --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom
 --enable-libopenjpeg --enable-libvpx --enable-libass
 --enable-libfreetype --enable-libfribidi --enable-libvidstab
 --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm
 --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc
 --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libgme
 --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame
 --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm
 --enable-libopencore-amrnb --enable-libopus --enable-libspeex
 --enable-libvorbis --enable-librubberband
    libavutil      56. 67.100 / 56. 67.100
    libavcodec     58.129.100 / 58.129.100
    libavformat    58. 71.100 / 58. 71.100
    libavdevice    58. 12.100 / 58. 12.100
    libavfilter     7.109.100 /  7.109.100
    libswscale      5.  8.100 /  5.  8.100
    libswresample   3.  8.100 /  3.  8.100
    libpostproc    55.  8.100 / 55.  8.100
 Input #0, mp3, from 'sine.mp3':
    Metadata:
      encoder         : Lavf58.71.100
    Duration: 00:00:20.04, start: 0.025057, bitrate: 128 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 128 kb/s
      Metadata:
        encoder         : Lavc58.12
 Stream mapping:
    Stream #0:0 (mp3float) -> asplit
    transpose -> Stream #0:0 (libx264)
    amix -> Stream #0:1 (aac)
 Press [q] to stop, [?] for help
 [libx264 @ 00000247f8921ac0] using SAR=1/1
 [libx264 @ 00000247f8921ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3
 SSE4.2 AVX FMA3 BMI2 AVX2
 [libx264 @ 00000247f8921ac0] profile High 4:4:4 Predictive, level 4.0,
 4:4:4, 8-bit
 [libx264 @ 00000247f8921ac0] 264 - core 161 r3048 b86ae3c - H.264/MPEG-4
 AVC codec - Copyleft 2003-2021 - http://www.videolan.org/x264.html -
 options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7
 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1
 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12
 lookahead_threads=2 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=2 keyint=250
 keyint_min=20 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf
 mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40
 aq=1:1.00
 Output #0, mp4, to 'out.mp4':
    Metadata:
      encoder         : Lavf58.71.100
    Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv444p(tv,
 progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 20.42 fps, 15680 tbn
      Metadata:
        encoder         : Lavc58.129.100 libx264
      Side data:
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo,
 fltp, 128 kb/s
      Metadata:
        encoder         : Lavc58.129.100 aac
 frame=  408 fps= 34 q=-1.0 Lsize=   10242kB time=00:00:19.96
 bitrate=4201.6kbits/s speed=1.66x
 video:10100kB audio:128kB subtitle:0kB other streams:0kB global
 headers:0kB muxing overhead: 0.134918%
 [libx264 @ 00000247f8921ac0] frame I:2     Avg QP:20.14  size: 59526
 [libx264 @ 00000247f8921ac0] frame P:115   Avg QP:26.20  size: 39985
 [libx264 @ 00000247f8921ac0] frame B:291   Avg QP:33.51  size: 19329
 [libx264 @ 00000247f8921ac0] consecutive B-frames:  2.2%  7.8%  0.7% 89.2%
 [libx264 @ 00000247f8921ac0] mb I  I16..4: 16.2% 72.5% 11.3%
 [libx264 @ 00000247f8921ac0] mb P  I16..4:  0.0%  0.2%  0.3% P16..4:
 6.0%  4.1%  3.4%  0.0%  0.0%    skip:86.0%
 [libx264 @ 00000247f8921ac0] mb B  I16..4:  0.0%  0.0%  1.1% B16..8:
 5.5%  1.7%  2.1%  direct: 2.7%  skip:86.9%  L0:42.1% L1:42.0% BI:15.9%
 [libx264 @ 00000247f8921ac0] 8x8 transform intra:29.6% inter:16.4%
 [libx264 @ 00000247f8921ac0] coded y,u,v intra: 56.3% 0.0% 0.0% inter:
 6.8% 0.0% 0.0%
 [libx264 @ 00000247f8921ac0] i16 v,h,dc,p: 98%  0%  1%  0%
 [libx264 @ 00000247f8921ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 80%  1% 19%
 0%  0%  0%  0%  0%  0%
 [libx264 @ 00000247f8921ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 72% 8%
 1%  1%  1%  4%  1%  5%
 [libx264 @ 00000247f8921ac0] Weighted P-Frames: Y:0.0% UV:0.0%
 [libx264 @ 00000247f8921ac0] ref P L0: 65.7%  8.8%  8.2% 17.2%
 [libx264 @ 00000247f8921ac0] ref B L0: 94.1%  5.4%  0.4%
 [libx264 @ 00000247f8921ac0] ref B L1: 97.3%  2.7%
 [libx264 @ 00000247f8921ac0] kb/s:4140.21
 [aac @ 00000247f8924e80] Qavg: 60535.746
 Exiting normally, received signal 2.
 Batchvorgang abbrechen (J/N)?

--
Ticket URL: <https://trac.ffmpeg.org/ticket/9152>
FFmpeg <https://ffmpeg.org>
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