I'm trying to convert an FLV file to MPG using Riva FLV Encoder. The video looks fine, but the audio is out of sync. So then I tried converting from FLV to AVI instead, and I have a video file with audio but no video (read something about FMPG codec; I installed it, but nothing changed). I figured I could rip the audio from the AVI and mux it with the video from the MPG, but the AVI won't open in VirtualDub. Any ideas?