Quite some time ago, I encoded a DivX avi with AC3 audio from a DVD source. Today, I want to take that avi, re-encode ONLY the audio from AC3 to OGG and create an OGM stream.

The main problem is getting that source AC3 from the avi instead of trying to grab it from the DVD again. I used VirtualDub to "save wav" from the avi, but when I then go to headac3he, I encounter problems. If I leave the file named with .wav extension, headac3he "can't find data chunk". If I rename to .ac3 entesion, seems to work fine, but I also get a "last frame incomplete or corrupt stream" error.

Suggestions?