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brechtf71475440
Participant
March 25, 2019
Question

After effect video and audio lagging

  • March 25, 2019
  • 1 reply
  • 1587 views

Dear community,

I am an After effects novice but have followed the basic course and read the basic material before creating my first promotional video. Everything went smooth but there is an issue which I can't seem to resolve.

When I embedded the audio I noticed that the audio lagged at certain time intervals. First I thought this was an audio/settings problem. So I changed certain things.
For instance:- Preferences=> previews => mute audio when preview is not-real time ( no change occured )
- Preferences=> Disk cache => I changed the folder from a full C:\\ disk to an empte D:\\ with a maximum disk cache size of 40 GB. ( no change occured )
- I changed the resolution to half/third/ and so on in the composition view (no change occured)
- I also changed the .mp3 file to a .wav file via media encoder because I read that AE and .mp3 don't always work seamlessly.

With my hands in my air I exported the final composition and noticed that when exported the audio plays perfectly and doesn't lag for a bit.

This made me think that the problem isn't audio based but somehow got to do with my computer and or After Effects settings.


I am running After Effects 16.0.1 (Build 48)

My system:
Intel(R) Core (TM i7-7500u CPU @2.70 GHZ
16 GB RAM Memory (15.9 GB disposable)
64 bits system, x64 processor
I am running Windows 10 Home 1803

Note: when previewing the video in AE. I noticed vertical lines in the composition panel on the moments when the audio or video lags.

My question: how can this be resolved, because it's frustrating not being able to view the video with audio at full speed? Muting the audio or using "." is not a viable option for me.

Thanks for taking the time to read and/or answering my question.

This topic has been closed for replies.

1 reply

OussK
Community Expert
OussKCommunity Expert
Community Expert
March 25, 2019

Simply you need to cash your preview before playback, try to follow the preview settings from the bellow screenshot

    R
    Community Expert
    Rick GerardCommunity Expert
    Community Expert
    March 25, 2019

    How long is your comp? I find that most new users try and edit in AE and they create comps with dozens of shots that are way too long to preview effectively. I also find that many new users try and use MP3 files for audio instead of industry standard WAV or AIFF files.

    If you are going to work efficiently with AE you have to learn how to preview motion and animation at a lower resolution without effects and motion blur. You can even skip frames. I call that a pencil test. When the animation works and the timing is good, turn on all effects and motion blur, I call that Ink and Paint, and check a few hero frames for the final look and feel, then send the comp to render and move on to the next part of your project. It doesn't take long to trust your previews. Until something substantially changes in the way After Effects processes pixels the pencil test - ink and paint workflow is the most efficient and the way that most professional motion graphics and 3D artists work. Nobody that is trying to pay the bills is going to be very successful if they wait around and fiddle with full resolution, full frame rate, full-length previews of all their work. I think that even if AE could do real-time full-resolution previews of 4K projects I would still spend most of my creative time with the pencil test/ink and paint workflow. It's been working for animators for more than a hundred years.

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