AUDIO like a CHIMPMUNK

[crashusa]

I am using ffmpegx 0.0.9x.
running 10.3.9/ 1ghz titanium

Up until about one day ago it was working fine.
Video renders fine, but the audio runs at 10times the speed.
I've run audio (without video) through ffmpegx and it all encodes at high speed.

I havent changed any settings, and I've tested the rendering against other programs such as MPEG streamclip (the audio and video are in sync on the other programs).

I would hate to render video by itself, then encode audio down and then mux them together. It would be great to have the old ffmegx back to do it in one shot !

Any thoughts would be helpful ?

[llee782]

Are you sure the audio you're trying to convert isn't monaural instead of stereo? That might result in it going twice as fast, not ten times.

[crashusa]

I don't believe the audio is in mono...
from two hours of footage and audio - video plays two hours and the audio might take about seven minutes to play.

Would it matter if the audio is muxed or seperated and then compressed through FFMPEGX ?
It does compress with out issue in other programs ?

[llee782]

I'm not sure. Can you decode the audio with mAC3dec to wav then bring it back using audio file to ac3 preset in ffmpegX?

[crashusa]

I figured it out... My version of FFMEGX will NOT encode AC3 into a different format.

Does anyone know why the program would encode one day - and then not encode the next ?

[3lutz3toe]

—I think I also have the same problem. I have an AVI file that I first burned it to DVD using Toast 7. The video looks fine, but the audio would stutter and skips.
—So I thought, maybe I should use ffmpgX to conver the AVI file to DVD. And this time, the audio sounds like chipmunk. And the orginal AVI does say “monaural” (does this mean it’s only 1 channel instead of stereo?)
—What can I do to solve this audio problem?