ADOBE AFTER EFFECTS: Forum Expressions Tutorials Creative Cloud

After effects does not render audio

COW Forums : Adobe After Effects

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Jake WhitneyAfter effects does not render audio
by on Aug 2, 2011 at 4:24:27 pm

Hi, I was wondering if anyone knew why I am having this problem. I shot video on a canon 7d and then after working on the files inside After Effects, it does not render the audio for some of the files. About half of them render the audio and the other half don't. I have converted the files before hand to a verity of formats but none of them work. I have also tried creating new projects just in case i screwed up in the project settings, but it still wont render. When I play the original and converted files in quicktime, the audio is fine. I really have no idea what is going on and would be curios to know if anyone else knows why this is happening and also if there is a solution.


Return to posts index

Nicholas MontgomeryRe: After effects does not render audio
by on Aug 2, 2011 at 4:57:00 pm

Just to ask right off the bat, have you made sure you have the audio checkbox checked in your export settings when you send it to the render queue?

Cinematographer / Editor
Synn Studios Inc.


Return to posts index

Jake WhitneyRe: After effects does not render audio
by on Aug 2, 2011 at 5:00:48 pm

Yes I have.


Return to posts index


Dave LaRondeRe: After effects does not render audio
by on Aug 2, 2011 at 5:11:20 pm

If you don't have AE 10 (aka CS5) or later, this could be the problem:

Dave's Stock Answer #1:

If the footage you imported into AE is any kind of the following -- footage in an HDV acquisition codec, MPEG1, MPEG2, AVCHD, mp4, mts, m2t, H.261 or H.264 -- you need to convert it to a different codec.

These kinds of footage use temporal, or interframe compression. They have keyframes at regular intervals, containing complete frame information. However, the frames in between do NOT have complete information. Interframe codecs toss out duplicated information.

In order to maintain peak rendering efficiency, AE needs complete information for each and every frame. But because these kinds of footage contain only partial information, AE freaks out, resulting in a wide variety of problems.

I'm a Mac guy, so I like to convert to Quicktime movies in the Animation or PNG codecs; both are lossless. I'll use Apple's Compressor, Adobe Media Encoder or Quicktime Pro to do it.

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


Return to posts index

Jake WhitneyRe: After effects does not render audio
by on Aug 2, 2011 at 5:19:19 pm

Hi, I have converted it from uncompressed AVI to apple motion jpeg but none seem to work. I am using cs4 and the original footage is h.264. Thank you all for you help. I think my best bet right now is just to synch the sound back up in vegas.


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]