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Choppy Sound on Final Render?

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marina nunamakerChoppy Sound on Final Render?
by on Dec 8, 2011 at 5:03:28 am

So if I watch my video on Adobe After Effects in the RAM preview, everything is perfect. When I render, however, the sound is super choppy, and the visual clip seems a bit choppy as well. What could be causing this?

Running Adobe After Effects CS5
Windows operating system
Using .mp3 files for sound files
Using .png frames exported from Maya in a a batch render
fps in the Maya batch render was 24fps
fps in AE is also 24fps


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Angelo LorenzoRe: Choppy Sound on Final Render?
by on Dec 8, 2011 at 8:03:33 am

What file container/codec are you rendering out to and what program are you watching the footage with?

Other useful info:
Render settings
Project resolution (width and height)


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marina nunamakerRe: Choppy Sound on Final Render?
by on Dec 8, 2011 at 5:10:05 pm

Actually, I ended up finding a solution - I wasn't compressing the file into a watchable movie format. Switching to Windows Movie Maker compression solved it. : )


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Michael SzalapskiRe: Choppy Sound on Final Render?
by on Dec 8, 2011 at 2:23:28 pm

This should answer your question: [link]

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


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Dave LaRondeRe: Choppy Sound on Final Render?
by on Dec 8, 2011 at 3:45:26 pm

[marina nunamaker] "Using .mp3 files for sound files"

Ah. There's your problem. You can't use mp3 files (or any kind compressed audio) if you want to render audio in AE. AE does not work well with compressed audio. It never has worked well. It may never work well.

The fix: convert that compressed audio to either wav or aiff files. Obviously, AE isn't the way to do the conversion. Use something else.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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