Re-Encoding Audio and Video Files

I think I will start a project to re-encode the audio files I had on the website to MP3 and if possible, re-encode some of the video files to WebM format.  Most all of the audio/video files I had on the original website were encoded in Real Media format.  I can re-encode the audio to MP3 fairly easily. It seems impossible to re-encode the video, I will have to completely start over from the VHS tapes, and I’m not sure if my VHS player even works anymore or my input hardware.  It will be something to keep me busy with at least.