When I play my composition in RAM Playing, the sound of my composition is being slowed down a lot, so it is completely changed, but in my render the sound plays at the correct speed...

My After Effects version is CS6. My computer's configuration:

  • 12 GB RAM memory,
  • Intel Core i5 3.4GHz
  • nVidia Geforce GTS450
  • Windows 7 Ultimate 64 bits

Here is a recorder video that will help you to understand the problem:

What is the problem? What else do you need to understand my problem, or to help me with it?

Thanks in advance!

  • why downvoted???
    – Victor
    Commented Nov 29, 2012 at 18:59

1 Answer 1


Have you checked your RAM Preview options?

RAM Preview options

If auto is selected, your frame rate might be modified. Set it to your comp's frame rate.

  • the frame rate is good as it is...
    – Victor
    Commented Nov 28, 2012 at 20:35
  • What's your sound file's format? Can you give us your encoding settings for your final render?
    – Inan Berbatov
    Commented Nov 28, 2012 at 21:46
  • I can provide you all thr information. But I repeat, I have no problems with the sound in the final render.
    – Victor
    Commented Nov 29, 2012 at 6:31
  • If you are using a sound card try to change the audio settings of AE. Under Audio Hardware, try setting it to System Default Input/Output, if selected, switch the others, I mean try them. If nothing changes, you can purge your caches by selecting Edit > Purge > All. If you are using a compressed file format like MP3, try using a WAV. Actually, I have never met this problem yet, but we can find a solution.
    – Inan Berbatov
    Commented Nov 29, 2012 at 19:06

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