Linux tip, Fedora tip / howto: normalize audio of DVD tracks

 
back to notes and tips index

Try my online puzzle page with Calcudoku, Killer Sudoku and online Sudoku.

normalize audio of DVD tracks

This assumes that you have the tracks already in the proper MPEG format (MPEG-PS) for DVD. The steps are simple: extract the audio of all tracks, normalize them, put the audio back in.

If you haven't already, install dvdauthor, mjpegtools, mplayer, and normalize.

  • demultiplex the audio and the video from the MPEG files:
    mpeg2desc -a 0 -o clip.mpa < clip.mpg > /dev/null
    mpeg2desc -v 0 -o clip.m2v < clip.mpg > /dev/null
  • convert the MPEG audio file to WAV:
    mplayer -ao pcm:fast clip.mpa
    mv audiodump.wav clip.wav
  • once you're doing creating WAV files for all tracks, normalize them:
    normalize -m *.wav
  • and convert them back to MPEG audio:
    mp2enc -o clip.mpa < clip.wav
  • and multiplex them back in:
    mplex -f 8 -o clip.mpg clip.m2v clip.mpa


← back to notes and tips index
Please do not copy the text of this tip (© Patrick Min) to your web site.