A simple video script

The other day, I wanted to prepare some videos of my favorite reggae and soul tunes for uploading them to YouTube. My goal was very simple: prepare a video with the music, and a static image.

After briefly digging for a simple software to do that, which I could not find, I said ``hey, why not doing it with liquidsoap’’? Well, that is fairly easy!

Here is the code:

log.level.set(4)
  
  audio = once(single("/tmp/bla.mp3"))
  video = single("/tmp/bla.jpg")
  
  # Mux audio and video
  source = mux_video(video=video,audio)
  
  # Disable real-time processing, to process with the maximum speed
  clock.assign_new(sync='none',[source])
  
  # Encode video and copy audio:
  encoder = %ffmpeg(format="mp4",
                    %audio.copy,
                    %video(codec="libx264")) 
  
   # Output to a theora file, shutdown on stop
   output.file(fallible=true,on_stop=shutdown,
               encoder, "/tmp/encoded-video.mp4",
               source)