A reader who prefers to remain anonymous has some movies that he’d like to turn into an entirely different kind of media file. He writes: I have some MPEG-4 music video files and all I want to do is ...

When extracting the audio using Virtualdub, it creates a .wav file but does not do any conversion as far as I am aware. For example, I extracted the sound from an avi which had mp3 compressed audio.

I have a video and wanted to extract the audio only. Video is 4 mins long give or take and is 17.3 meg I fired up VLC player, opted to convert to a mp3 with 384 kb/s and 44.1k and got a file that was ...