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I've been using after effects cs6 to make intros in my youtube template. They always render without sound. I've been exporting them as avi files. I'm currently making one in an mpeg4 format (assuming that is another name for mp4) since my other intros all have sound and they're mp4 files.

I clicked "lossless" in the render queue and I changed the file format to avi. I checked "audio output" and didn't touch the settings inside that submenu and then I clicked OK and render. after waiting a while, AE spit out an intro file thats around a gigabyte in size and has no sound. What is the problem?

  • Are you sure you have an active audio track in your timeline? – Nate Barbettini Aug 13 '15 at 2:42
  • possible duplicate of AE - Composition video file/layer missing audio ? – p2or Aug 13 '15 at 11:26
  • @NateBarbettini here's a picture of the layers. I am unsure if there are hidden layers or whatever – Registered User Aug 15 '15 at 2:52
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    @RegisteredUser And where is your audio layer in the composition? As you can see, in this composition is no audio, if a layer consists of audio the audio Icon (right beside the visibility icon) will appear. Could you please add a more meaningful screenshot? What about the answers in the linked question? – p2or Aug 15 '15 at 8:22
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The output file doesn't have any sound because there is no audio in the timeline that you are rendering.

The output format (MP4 vs. AVI) doesn't have any effect; both formats can contain an audio track or not. Checking the box to output audio only has any effect if there is already an audio track in the timeline. If there's no audio track, the output will have audio but it will be silent (as you're experiencing).

The solution is to add some audio file(s) to the project and then put it into your timeline.

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