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• FFmpeg error code 254

  17 septembre 2013, par Akerus

  I try to get file informations via ffprobe in a java-application.

  I am using the following command :

  /usr/bin/ffprobe -v quiet -print_format json -show_format -show_streams TESTVIDEOPATH

  Running that command in bash, it works like a charm : It returns the JSON-String and error code is "0".
  Running that command in Java results in error code "254" and result is :

  \n\n

  When I modify the command, so that ffprobe accepts a stream as input :

  /usr/bin/ffprobe -v quiet -i - -print_format json -show_format -show_streams

  it works in both bash and Java.

  In Java the following is used :

  ProcessBuilder processBuilder = new ProcessBuilder(command.split(" "));
  
  this.process = processBuilder.start();
  
  this.process.waitFor();
  
  int exitCode = this.process.exitValue();
  
  this.outputOfProcess = this.process.getInputStream();

  Can anyone tell me what the error code 254 means ? I couldn't find anything about it.

  Edit : ffmpeg version 0.10.7-6:0.10.7-0jon1 quantal is used

• How do I get event emitter based code to wait in nodejs ?

  29 mars 2019, par DigitalDisaster

  I may be asking the question wrong because I don’t have a lot of experience with this. Basically, I have this code :

  videoshow(images, videoOptions)
  
    .audio('song.mp3')
  
    .save('video.mp4')
  
    .on('start', function (command) {
  
      console.log('ffmpeg process started:', command)
  
    })
  
    .on('error', function (err, stdout, stderr) {
  
      console.error('Error:', err)
  
      console.error('ffmpeg stderr:', stderr)
  
    })
  
    .on('end', function (output) {
  
      console.error('Video created in:', output)
  
    })

  from this library

  It runs async as far as I understand, but I can’t get it to wait even when I add await before it.

  I want the block of code to stop until the end has finished and the image has been converted to a vide. I don’t see any examples, and I’m not sure what I’m doing wrong.

• mp4 to .ts conversion using C code [on hold]

  8 décembre 2017, par latha sri

  I am trying to write a C code which can convert mp4 to ts. I tried this with ffmpeg. But I want to know how ffmpeg is internally converting mp4 to .ts and how it is arranging video and audio data in .ts. I also referred the container format for mp4 from ISO-14496-12.