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• FFMPEG concat filter has unconnected audio output

  7 juillet 2021, par volx757

  I am trying to concat an arbitrary video file with a video file of 5 seconds of black. Here is the command I'm using :

  


  ffmpeg -i tmp/converted_one_1234.mp4 -i public/empty.mp4 -vsync 2 -filter_complex "[0:v]scale=1024:576:force_original_aspect_ratio=decrease,pad=1024:576:(ow-iw)/2:(oh-ih)/2,setsar=1[v0]; [1:v]scale=1024:576:force_original_aspect_ratio=decrease,pad=1024:576:(ow-iw)/2:(oh-ih)/2,setsar=1[v1]; [v0][0:a][v1][1:a]concat=n=2:v=1:a=1[v][a]" -map [v] -map [a] output.mp4


  


  And the error :

  


  Filter concat:out:a0 has an unconnected output


  


  So I understand the issue is that there is an audio stream that is not getting mapped to an output. The arbitrary video has audio in it, the black video technically has no sound, but it has an audio stream (verified with ffprobe).

  


  I think I'm just missing how the syntax works here. I've tried removing the audio input from this section :

  


  [v0][0:a][v1]concat=n=2:v=1:a=1[v][a]


  


  but it doesn't work. How do I avoid this error ?

  


  edit with complete log of ffmpeg events (i should note that before this failing operation, there is one in which the arbitrary video gets converted to an mp4. The concat fails regardless of whether the first conversion is included) :

  


      ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.5 (clang-1205.0.22.9)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4_2 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-avresample --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'http://s3.amazonaws.com/bucket/27173/custom_video/final/IMG_2753.mp4?1625616358':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:00:15.93, start: 0.000000, bitrate: 802 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 320x568, 723 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 70 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
File 'tmp/converted_one_27173.mp4' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> mp2 (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7fe770820400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7fe770820400] profile High, level 3.0, 4:2:0, 8-bit
[libx264 @ 0x7fe770820400] 264 - core 163 r3060 5db6aa6 - 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=-2 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=25 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 'tmp/converted_one_27173.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 320x568, q=2-31, 30 fps, 15360 tbn (default)
    Metadata:
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.134.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1(und): Audio: mp2 (mp4a / 0x6134706D), 44100 Hz, mono, s16, 384 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.134.100 mp2
frame=  478 fps=353 q=-1.0 Lsize=    2033kB time=00:00:15.89 bitrate=1047.8kbits/s speed=11.7x    
video:1271kB audio:747kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.769286%
[libx264 @ 0x7fe770820400] frame I:11    Avg QP:23.67  size:  9018
[libx264 @ 0x7fe770820400] frame P:200   Avg QP:25.18  size:  4565
[libx264 @ 0x7fe770820400] frame B:267   Avg QP:30.02  size:  1081
[libx264 @ 0x7fe770820400] consecutive B-frames: 20.5% 12.1%  8.8% 58.6%
[libx264 @ 0x7fe770820400] mb I  I16..4:  9.3% 78.4% 12.3%
[libx264 @ 0x7fe770820400] mb P  I16..4: 10.3% 32.2%  1.0%  P16..4: 34.0% 12.3%  5.0%  0.0%  0.0%    skip: 5.2%
[libx264 @ 0x7fe770820400] mb B  I16..4:  1.0%  4.2%  0.1%  B16..8: 50.8%  4.2%  0.3%  direct: 1.7%  skip:37.6%  L0:52.8% L1:42.8% BI: 4.4%
[libx264 @ 0x7fe770820400] 8x8 transform intra:75.0% inter:70.6%
[libx264 @ 0x7fe770820400] coded y,uvDC,uvAC intra: 47.7% 64.1% 8.5% inter: 17.0% 19.6% 2.4%
[libx264 @ 0x7fe770820400] i16 v,h,dc,p: 17% 21%  8% 53%
[libx264 @ 0x7fe770820400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 23% 15%  5%  7%  7%  7%  5%  7%
[libx264 @ 0x7fe770820400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 24% 14%  5%  9%  7%  9%  5%  6%
[libx264 @ 0x7fe770820400] i8c dc,h,v,p: 47% 25% 20%  8%
[libx264 @ 0x7fe770820400] Weighted P-Frames: Y:11.5% UV:5.5%
[libx264 @ 0x7fe770820400] ref P L0: 73.5% 12.0% 11.9%  2.0%  0.5%
[libx264 @ 0x7fe770820400] ref B L0: 96.0%  3.8%  0.2%
[libx264 @ 0x7fe770820400] ref B L1: 98.1%  1.9%
[libx264 @ 0x7fe770820400] kb/s:653.11
ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.5 (clang-1205.0.22.9)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4_2 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-avresample --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Trailing option(s) found in the command: may be ignored.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tmp/converted_one_27173.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:00:15.93, start: 0.000000, bitrate: 1045 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 320x568, 653 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 384 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'public/empty.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:00:05.01, start: 0.000000, bitrate: 17 kb/s
  Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 7 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
Filter concat:out:a0 has an unconnected output


  


• Anomalie #4830 : extraire_date extravagant

  6 juillet 2021

  <span class="CodeRay">Une date 2021 12 32
      2021-12-03
  </span>
  Télécharger

  Ça retourne une date "03" puisque 32 n’est pas un jour valide, mais 3 peut l’être.

• Anomalie #4245 (Fermé) : Petit bug de sous_repertoire()

  11 décembre 2018

  Découvert hier, un enchaînement tueur :

  <span class="CodeRay"><span class="local-variable">$demo</span> = sous_repertoire(_DIR_TMP, <span class="string"><span class="delimiter">'</span><span class="content">demo_</span><span class="delimiter">'</span></span>);
  <span class="comment">// $demo = 'tmp/demo_'</span>
  <span class="local-variable">$bug</span> = sous_repertoire(<span class="local-variable">$demo</span>, <span class="string"><span class="delimiter">'</span><span class="content">potiron</span><span class="delimiter">'</span></span>);
  </span>
  Télécharger

  Le système a rencontré une erreur lors de l’écriture du fichier tmp/demo/potiron/.plat.

  En fait, lors de l’appel de sous_repertoire($base, $subdir), la fonction vire les / et _ finaux de $base (mais pas le _ final éventuel de $subdir).
  Il se retrouve ici à vouloir créer le répertoire tmp/demo/potiron au lieu de tmp/demo_/potiron et n’y arrive pas, vu que le répertoire parent (demo) n’existe pas.

  Histoire¶

  Après quelques fouilles archéologiques, il se trouve que le problème survient probablement avec r8196 qui refactore différemment le code de r6395 :
  - 6395 fil@rezo.n     if (!preg_match(',[/_]$,', $base)) $base .= '/';
  - 8196 esj@rezo.n     if (preg_match(',[/_]$,', $base)) $base = substr($base,0,-1);
  - 16035 fil@rezo.n     $base = rtrim($base, '/_');

  Le tout devait être, je suppose, pour prendre en compte les excentriques répertoires "plats" (dépendants maintenant de la présence de la constante _CREER_DIR_PLAT).

  Corrections¶

  Plusieurs corrections possibles :
  - A) virer la constante _CREER_DIR_PLAT et ses actions, et le rtrim de ce souligné (on est en 2018…).
  - B) simplement appliquer le rtrim du souligné si _CREER_DIR_PLAT est présent (ça corrige pas le bug que $subdir n’aurait alors pas ce rtrim non plus !)
  - C) B + corriger le rtrim pour $subdir de la même manière.

  Je suis partisan de A) sur le trunk, et B) ou C) sur 3.2 et 3.1.

  Des avis ?