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• PHP Script for FFMPEG conversion

  29 mai 2013, par user910930

  Not been programming for long, so go easy.

  Basically I'm attempting to write a PHP script that'll be able to automatically convert a folder full of .mp4's for me, and make them .flv's. This will be done for my entire TV collection (which is quite large) to allow for streaming over my local network within browsers.

  I've currently got the following code :

  // Save video files into an array
  
  $vid = glob("../../*.mp4");
  
  // Open text file in write mode
  
  $fp=fopen("test.txt","w+");
  
  // Write contents of array to file
  
  foreach($vid as $key => $value){
  
  fwrite($fp,$value."\n");
  
  }

  This is taking all of the mp4 files within the folder, and saving their filenames into a text file. The next step I need to take is to read each line, one by one, and perform an FFMPEG command on them until each line has been completed.

  Any idea how I can achieve this ? I know I'll have to use shell_exec somehow, but I've never used this before, and I'm a little bit stuck as to what to do next.

  Thanks for any help

• Clarity on FFmpeg Filter graph description

  11 mars 2019, par Vencat

  I’m using libavfilter C API to scale my video.

  I started to read the documents related to libavfilter and got stuck at Filtergraph-description.

  I don’t understand the terminology "filter pads". Throughout the documents, I came across these terms like filter input pad and the output pad.

  It would be really appreciable if anyone explains the filter pads in a simple way. Also please share any documents or links related to libavfilter C API examples.

• What is the best way to convert a chunk into writable stream for FFMPEG or FS.write ?

  22 juin 2023, par Hypothesis

  I have a chunk of data and I use const blob = new Blob(chunks) to make into a blob and from a blob into an arrayBuffer with Buffer.from(await blob.arrayBuffer()) and then I make a stream from buffer with Readable.from(buffer);

  


  However the whole process seems to be painstaking and I have run into some serious memory and garbage collection issues while using buffers. Is there anyway I can get a stream directly from the chunk or the blob not having to go through any buffers and make into a file ?