I'm a newbie. Just got ffmpegx. I need to encode a commercial to play on a gas pump (yea, you heard right). It has to be a muxed mpeg2. I drop the .mov and I've tried different presets. The DVD ffmeg seems to be right. But, I have to change the audio to .mp2. I select "channels stereo, audio track 1." I get a good .mpv, but my .mp2 is 0 kb and says it can't be played. (I have the QT mpeg player component). It says it builds successfully. Then, when I try and mux it - it fails. I'm doing something wrong. Can anybody help? Thanks so much.