Known Participant

Answered

How to trim audio less than a frame in After Effects?

Forum|Forum|6 years ago
April 17, 2019
6 replies
9501 views

This seems like a fairly obvious and simple question, but I can't find the answer anywhere. I'm relatively new to AE--I come from the audio world in which it is possible to trim an audio clip right down to the teensiest waveform--in literally any DAW that exists. So why wouldn't it be possible to do that right within AE? We recorded the audio for our current project in ProTools, separately from the video, and now it's about half a frame off from the video. Ultimately, it will be hard to notice, but even so, it's eating me up--there's gotta be a way (other than going into Premiere---we don't have any cuts, just one shot with green screen and animation, so it doesn't make sense to link to Pr).

Correct answer Roland Kahlenberg

Trimming may seem easy but there is some engineering required to things work sub-frame. It's a good idea to think of Adobe's DVA tools as a set of tools that work together. In, AE, you can select the Audio Layer and choose Edit in Audition, via the Edit Menu.

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AaronMrvelj

Participant

I just had to deal with this issue. The quick and dirty fix for me was to time stretch my audio 200% which allowed me to shift and trim where I needed. Then I reverted back to 100% length.

J

jamespianoo

Participant

Old thread, but I feel you man, some of the community here are downright hostile to people learning the software and asking for help. I've found by prerendering the video and the increasing the frame rate to 60fps I was able to sync everything up, then move it back to 30fps - it's not 100% perfect, but it's a lot closer than one frame.

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GPK15

Participant

Also, you can increase your composition frame rate, adjust your audio position, and then take your frame rate back down. The audio will stay in the same position it was on the higher frame rate. This allows you to get smaller move increments without too much hassle. I know you can set a custom frame rate up to at least 300fps. If you're trying to sync things this allows you to see both waveforms in the timeline as well.

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jimmyg254018

Participant

I had the same issue where I wanted sub-frametime aligned sync of a separately recorded audio track.

I worked around this by using the Delay effect. I.e, place the sound on the closest frame possible that is before your desired sync point. Then you set "Feedback" & "Dry Out" to 0%, "Delay Amount" & "Wet Out" to 100%, and you tweak the Delay Time parameter to get your audio in sync.

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Doug5C05

Participant

Best and most simple solution to my problem, thanks!

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Byron Cortez

Community Expert

It occurs to me to give your audio the exact duration of your video in the Layer / Time / Time Stretch menu option ... in "New Duration" you set the duration of your video so you will get a perfect synchronization and this change will be imperceptible.

Byron.

Martin_Ritter

Legend

errmm..

Why? Why do you bother answering? What is the point of being a snide troll? Do you think you're being helpful?

Q:

I come from the audio world in which it is possible to trim an audio clip right down to the teensiest waveform [...]
So why wouldn't it be possible to do that right within AE?

A:

... and in every video editing software the smallest unit is a frame, therefore you do such things in an audio tool.

The first post is the answer. Don't blame us if you don't like it.

*Martin

Mike_Abbott

Legend

"-in literally any DAW that exists. So why wouldn't it be possible to do that right within AE?"

Because AE is not a DAW.

jonnymackjacksonAuthor

Known Participant

Why? Why do you bother answering? What is the point of being a snide troll? Do you think you're being helpful?

If Ae doesn't have the capability, then you could say something like "Ae doesn't currently have this function. Here's a link to the suggestion area".

Just because Ae isn't specifically a DAW or an editor doesn't mean it can't be used as such--especially for something as simple as trimming.

Roland KahlenbergCorrect answer

Legend

Trimming may seem easy but there is some engineering required to things work sub-frame. It's a good idea to think of Adobe's DVA tools as a set of tools that work together. In, AE, you can select the Audio Layer and choose Edit in Audition, via the Edit Menu.

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