Using w_r4 and the CVD (mpeg2enc) present, despite the bitrate discrepancies mentioned in an earlier thread.

ffmpegX correctly encoded the AVI to CVD (although the bitrate was only 1100 kbit/s vs the presets 2300 kbit/s). But something happened when ffmpegX muxed the CVD into .img files. The AVI and mpeg2 were 45 mins long but Toast reads the imgs as only 33 mins long. If I play the imgs in VLC, they also show up as 33 mins long.