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AE audio waveform disappears in middle of track
I recently upgraded to CS3. One of my CS2 projects has several .mov and .avi files in it. Now I’m getting this weird bug that doesn’t make any sense. The audio at the beginning of the track containing the .mov is just fine, but partway through the audio just drops out. One frame, there’s a waveform and everything is fine. After that, flatline. No waveform, no sound. If I preview the .mov on its own, it has audio all the way through. But for some reason, putting it into the timeline causes the audio to partially break at one specific spot. Any ideas what might be causing this bizarre glitch? I updated to the latest quicktime player, to no avail.
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4 Replies
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audio codec was mp3. i re-encoded to AAC and it seems to be working. thanks for the tip!
it was driving me nuts because it worked perfectly well in AE2.
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[joe mcneilly] “audio codec was mp3. i re-encoded to AAC and it seems to be working. thanks for the tip! “
Just FYI, AAC is MPEG-4 audio encoding and could very well exhibit the same problems. Again, you got lucky. You should probably use uncompressed audio in the future if you want to avoid problems.
Darby Edelen
Designer
Left Coast Digital
Santa Cruz, CA -
For these projects, unfortunately, I had no choice but to work with source material that was already heavily compressed. I tried rendering one of the audio tracks to .wav, but got only static for output. So I rendered the same audio track to AAC and it worked fine.
The frustrating part is that I can preview the originals in the project bin, and the waveform is fine. Its only when they go to timeline that they have problems. Would a difference in sampling rate or bitrate cause the problem, or is it purely a codec issue?
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i used mpeg streamclip, usually very stable for such things.
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