LPCM or AC3 from AIF for compatibility with Sizzle

[llee782]

How can I create an LPCM or AC3 from AIF that will be compatible with Sizzle? I've created AC3 files using ffmpeg and mp2enc that seem fine when played alone in VLC, but when muxed using mplex or Sizzle, the video runs 2 times as fast as the audio, and the audio is compromised. If I extract the PCM file from a DVD created with iDVD, Sizzle won't even recognize it. I wanted to try A Pack, but where is it? I can't find it anywhere. Does it only come with DVDSP? Thanks.

[pants]

a.pack only comes with dvd studio pro. there is another dolby digital ac3 encoding ap for mac that comes with capty dvd, but it may only be in the 2.0 version. i saw it at macworld but wasn't able to lay with it sonot sure if it's any good or not for ac3. not sure of other ways to make ac3, cause i''ve only used a.pack.