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• I have downloaded a static built of a linux program. Where should I put the man pages ?

  29 novembre 2015, par Mephisto

  I have downloaded a static built of a linux program (ffmpeg) I want to use in my Ubuntu 14.04

  I just copy the executable (ffmpeg) into /usr/local/bin and the program works. I have been doing so for long now with this program. The author of the static built updates it very often.

  But I have no man pages. Inside the directory where the static built comes, there is a directory called manpages. I think I might copy the files inside that directory (or the directory itself) to some location in my hard drive and from that moment I would be able to type in a console :
  man ffmpeg

  Where should I put those files ?

  Remark : I don’t want to delve into the complexities of compiling the program on my own (gathering information about the components I should include in the compilation, etc) and I don’t want to use the fork (avconv) of ffmpeg that unluckily comes with my ubuntu because of the multiple bugs I have experience with it, and because of its lack of some ffmpeg features (video de-shaking !). Thanks.

• FFmpeg : merge 8 mono audio streams MOV file into one audio stream FLV file

  1er décembre 2015, par snucky

  I have a MOV file with eight mono audio streams, likely a 5.1 or 7.1 setup. I want to generate a for-web preview FLV file from it but in doing so lose the voices in the dialogue. FFmpeg is likely favoring an audio stream out of the eight that doesn’t have the voices. When I researched ways to merge the audio streams, in order to bring the voices back, I lose the ability to execute my ffmpeg command entirely. Here’s what I have at the moment (the introduction of the "-map 0" option rendered the command non-executable)

  /usr/local/bin/ffmpeg -i ../vmx_files/6711177.mov -map 0 -y -f flv -qmax 10
  
        -vf "scale=trunc(oh*a/2)*2:720" -ar 44100 -ab 64k assets/flv/6711177.flv
  
  
  
  
  
  ffmpeg version N-69160-g1013c15 Copyright (c) 2000-2015 the FFmpeg developers
  
    built on Jan 20 2015 09:41:10 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-11)
  
    configuration:
  
    libavutil      54. 17.100 / 54. 17.100
  
    libavcodec     56. 20.100 / 56. 20.100
  
    libavformat    56. 19.100 / 56. 19.100
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5.  8.100 /  5.  8.100
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../vmx_files/6711177.mov':
  
    Metadata:
  
      major_brand     : qt
  
      minor_version   : 537199360
  
      compatible_brands: qt
  
      creation_time   : 2015-11-24 23:00:27
  
    Duration: 00:01:48.34, start: 0.000000, bitrate: 229443 kb/s
  
      Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le(bt709), 1920x1080, 220043 kb/s, SAR 1:1 DAR 16:9, 29.97 fps, 29.97 tbr, 2997 tbn, 2997 tbc (default)
  
      Metadata:
  
        creation_time   : 2015-11-24 23:00:27
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Apple ProRes 422 (HQ)
  
        timecode        : 00:59:50;00
  
      Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-11-24 23:00:27
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:2(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-11-24 23:00:27
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:3(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-11-24 23:00:27
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:4(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-11-24 23:00:27
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:5(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-11-24 23:00:27
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:6(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-11-24 23:00:27
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:7(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-11-24 23:00:27
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:8(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
  
      Metadata:
  
        creation_time   : 2015-11-24 23:00:28
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:9(eng): Data: none (tmcd / 0x64636D74)
  
      Metadata:
  
        rotate          : -0
  
        creation_time   : 2015-11-24 23:03:22
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:59:50;00
  
  Data stream encoding not supported yet (only streamcopy)

• Anomalie #4108 : Critère IN et #ENV

  5 mars 2018, par Maïeul Rouquette

  Je n’ai jamais du que cela a été possible a un moment, j’ai dit que c’était contre intuitif. Mais effectivement je comprend la logique. On peut fermer.