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• Split Long Video Into Small Parts With FFmpeg And PHP

  13 janvier 2021, par Rhara Mutiara

  First, English is not my native language, I hope you understand what i want to say
  
I want to split long video, lets say 1 hour of video into small parts.
Right now I'm able to do this with this code
  

  


  ob_start();
    passthru('ffmpeg -i in.mp4 -acodec copy -f segment -segment_time 3 -force_key_frames "expr: gte(t, n_forced * 3)" %d.mp4');
    ob_end_clean();


  


  The output is thousands of parts with name 0.mp4, 1.mp4, 2.mp4 etc and 3sec duration each part
  
What I want to do now is should look like this :
  
0.mp4 3seconds , 1.mp4 5seconds, 2.mp4 3seconds.. etc
  
is it possible ?

  


• ERROR : "Cannot Find FFMPEG" on Google Cloud Compute Engine Debian Wheezy 7.8 Managed Instance even though it's installed

  4 octobre 2015, par DynamoBooster

  I wrote a Node.JS application that uses the fluent-ffmpeg module to watermark videos uploaded on the platform. I pushed the code to a my Google Cloud Compute Engine project, and every time I get Error : Cannot Find FFMPEG. I ssh’d into the instance once it was created and ran these commands to install FFMPEG before actually testing out the code. I am not sure what is causing the error because after this I am positive that FFMPEG is installed.

  sudo apt-get update
  
  sudo apt-get install -y ffmpeg
  
  export FFMPEG_PATH="/usr/bin/ffmpeg"
  
  export FFPROBE_PATH="/usr/bin/ffprobe"

  Below is my FFMPEG code

  function generate_thumbnail(name, path){
  
    logging.info("Generating Thumbnail");
  
    ffmpeg(path)
  
     .setFfmpegPath('/usr/bin/ffmpeg') 
  
     .setFfprobePath('/usr/bin/ffprobe')
  
     .on('end', function() {
  
          upload_thumbnail(name);
  
          logging.info("Thumbnail Generated and uploaded");
  
          return;
  
      })
  
    .on('error', function(err, stdout, stderr) {
  
          logging.info('ERROR: ' + err.message);
  
          logging.info('STDERR:' + stderr);
  
    })
  
    .on('start', function(commandLine) {
  
         logging.info(commandLine);
  
    })
  
    .screenshots({
  
      count: 1,
  
      filename: name + '_thumbnail.png',
  
      folder: 'public/images/thumbnails/'
  
    });
  
  }

• ffmpeg remove all silent parts from audio file

  18 décembre 2020, par user195392

  I would like to cut the silent parts (where my prof writes on the blackboard but does not talk) off from my lecture notes. I tried ffmpeg -i input.mp3 -af silenceremove=1:0:-50dB output.mp3 from this post, but it only deletes silence from the beginning of my file.

  


  Can I delete the silence everywhere with one command ? I only want the speech without all the writing on the blackboard. Thank you !