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• ffmpeg : "Referenced QT chapter track not found"

  29 avril 2019, par Ze'ev

  Using ffmpeg to replace audio in a QuickTime with audio from a WAV.

  Anyone know why I’m getting Referenced QT chapter track not found ?

  Command :

  $ ffmpeg \
-i "$video" -t 25 \
-i "$audio" -map 0:v -c:v copy -map 1:a -c:a pcm_s24le -ar 48000 \
-hide_banner "$output"

  Output :

  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7faf62010600] Referenced QT chapter track not found
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mov':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 537199360
  
      compatible_brands: qt
  
      creation_time   : 2018-11-06T09:27:43.000000Z
  
    Duration: 00:00:25.00, start: 0.000000, bitrate: 186987 kb/s
  
      Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(bt709, progressive), 1920x1080, 185115 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 2018-11-06T09:27:43.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Apple ProRes 422 (HQ)
  
        timecode        : 00:00:00:00
  
      Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, stereo, s16, 1536 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-11-06T09:27:43.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:00:00:00
  
      Stream #0:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-11-06T09:27:43.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:00:00:00
  
  Guessed Channel Layout for Input Stream #1.0 : stereo
  
  Input #1, wav, from 'audio.wav':
  
    Metadata:
  
      encoded_by      : Pro Tools
  
      originator_reference: aaOpKJaTN7Nk
  
      date            : 2018-11-08
  
      creation_time   : 13:53:50
  
      time_reference  : 166698000
  
    Duration: 00:00:25.00, bitrate: 2128 kb/s
  
      Stream #1:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s32 (24 bit), 2116 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #1:0 -> #0:1 (pcm_s24le (native) -> pcm_s24le (native))
  
  Press [q] to stop, [?] for help
  
  Output #0, mov, to 'test19.mov':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 537199360
  
      compatible_brands: qt
  
      encoder         : Lavf58.12.100
  
      Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 185115 kb/s, 0.04 fps, 25 tbr, 12800 tbn, 25 tbc (default)
  
      Metadata:
  
        creation_time   : 2018-11-06T09:27:43.000000Z
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Apple ProRes 422 (HQ)
  
        timecode        : 00:00:00:00
  
      Stream #0:1: Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s
  
      Metadata:
  
        encoder         : Lavc58.18.100 pcm_s24le
  
  frame=  625 fps=277 q=-1.0 Lsize=  566343kB time=00:00:24.96 bitrate=185876.0kbits/s speed=11.1x
  
  video:564928kB audio:1406kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.001496%

  Same error with -map 0:v:0

• Ffmpeg : copy chapter and remove tags mkv files

  15 décembre 2018, par Chris

  I’m working with MKV files only. When I convert from original to target, video and audio works 100%. I however have issues copying the Chapters too, sometimes it works, other times not. The output file also contains 3 Tags I need to get rid of :

  Using MKVToolsNiX to check Output file :

  1. Entry - Global Tags
  2. Entries - Tags
  3. Entries - Tags

  My commandline looks like this :

  -map_metadata -1 -map 0:0 -map 0:1 -metadata:s:a:0 language=eng -metadata:s:v:0 language=eng -metadata:s:s:0 language=eng -c:v libx264 -s 1280x720 -pix_fmt yuv420p -b:v 2500k -r 30 -c:a ac3 -b:a 320k -ar 48000 -ac 6 -y

  Any help will be appreciated.

  Chris

• ffmpeg blackdetect, start_black value to mkv chapter ?

  2 décembre 2019, par stackoverflowknitter

  I’m trying to do automatic detect chapter with blackdetect with ffmpeg.

  When I use blackdetect I get result but what is the result ? Its not frames ? Also. Is it possible to do a script/bat-file (for windows 10, powershell or cmd) to convert the result to a "mkv xml-file" so It can be imported with mkvtoolnix ?

  ffmpeg -i "movie.mp4" -vf blackdetect=d=0.232:pix_th=0.1 -an -f null - 2>&1 | findstr black_duration > output.txt

  result :

   black_start:2457.04 black_end:2460.04 black_duration:3
  
   black_start:3149.46 black_end:3152.88 black_duration:3.41667
  
   black_start:3265.62 black_end:3268.83 black_duration:3.20833
  
   black_start:3381.42 black_end:3381.92 black_duration:0.5
  
   black_start:3386.88 black_end:3387.38 black_duration:0.5
  
   black_start:3390.83 black_end:3391.33 black_duration:0.5
  
   black_start:3824.29 black_end:3824.58 black_duration:0.291667
  
   black_start:3832.71 black_end:3833.08 black_duration:0.375
  
   black_start:3916.29 black_end:3920.29 black_duration:4