Recherche avancée

Sur d’autres sites (3422)

• How do I remove or fix chromium-codecs-ffmpeg-extra ? [closed]

  1er mars 2020, par Ticko

  It is bothering me whenever I try to interact with any package or library and I can not seem to fix or remove it.
  I have tried doing :

  sudo apt-get --purge remove chromium-codecs-ffmpeg-extra

  But all I get is :

  Reading package lists... Done
  
  Building dependency tree       
  
  Reading state information... Done
  
  The following packages will be REMOVED:
  
    chromium-codecs-ffmpeg-extra*
  
  0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
  
  1 not fully installed or removed.
  
  After this operation, 4.294 kB disk space will be freed.
  
  Do you want to continue? [Y/n] y
  
  dpkg: error processing package chromium-codecs-ffmpeg-extra (--remove):
  
   package is in a very bad inconsistent state; you should
  
   reinstall it before attempting a removal
  
  Errors were encountered while processing:
  
   chromium-codecs-ffmpeg-extra
  
  E: Sub-process /usr/bin/dpkg returned an error code (1)

• fluent-ffmpeg converting MKV to MP4 gives error "Conversion Failed"

  19 juillet 2019, par Jackie

  I am trying to use fluent-ffmpeg to stream a video from disk, this video is a MKV file. I am trying to transcode this video to MP4 on my NodeJS server and stream it to the client. However, I keep getting the error code 1: Conversion failed! when I try to transcode the MKV file to MP4. Does anyone know why I am getting this error ?

  My code works when I try to transcode a MP4 file to MKV (matroska), but it does not work the other way around.

  Here is the code I am using :

  app.get('/video123', function (req, res) {
  
    var path = 'assets/sample2.mkv';
  
    ffmpeg(path)
  
      .format('mp4')
  
      .on('end', function () {
  
        console.log('file has been converted successfully');
  
      })
  
      .on('progress', function (progress) {
  
        console.log('Processing: ' + progress.frames + 'frames done');
  
      })
  
      .on('error', function (err) {
  
        console.log('an error happened: ' + err.message);
  
      })
  
      .pipe(res, { end: true });
  
  });

• FFmpeg : move moov atom of stream to front without writing a new file

  5 juillet 2023, par OGreeni

  I'm trying to extract a thumbnail image from an input stream with FFmpeg and send the result to stdout. I've been using this command : ffmpeg -i - -ss 00:00:01.000 -vframes 1 -c:v png -f image2pipe -. This works fine when the input has a .mp4 container, but not for .mov. I'm getting an "unspecified pixel format" error.

  


  After moving the moov atom to the front of the file with this command : ffmpeg -i - -c:a copy -c:v copy -movflags faststart output.mov, and then piping the file to the previous command, everything works. However, I would like to do this without writing a file to disk. The command ffmpeg -i - -c:a copy -c:v copy -movflags faststart -f mov - fails to initialize the output stream because muxer does not support non-seekable output.

  


  Is there a way to do this without writing a new file, perhaps by using an intermediate buffer ? I'm quite new to FFmpeg, so I might be missing something with my approach.