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D
Dan Davis Digital
Participant
October 28, 2024

AE 2025 no longer adjusts comp duration with frame rate

  • October 28, 2024
  • 2 replies
  • 914 views

I often pre-comp stock footage (usually prores clips interpreted at 30fps) into 60fps compositions to apply frame blending before using the clip in my designs. Today's my first time in 2025 and when I've changed the comp with a duration of 06:20 from 30fps to 60fps it no longer automatically calculates a new duration based on the fps and remains at 06:20.
Now the comp that used to be 6 seconds and 66.6 miliseconds long is 6 seconds and 33.3 miliseconds long and my original clip overshoots the comp length.

Obviously I've identified the issue and can fix it but it ads another step to my workflow and will create confusion for people who don't work in different frame rates often so I hope this is not intentional

This topic has been closed for replies.

2 replies

R
Community Expert
Rick GerardCommunity Expert
Community Expert
October 28, 2024

Compositions are based on time, not frame rate. If you have time selected in the timeline instead of frames, compositions have never changed duration when you change the frame rate. You can make a nested comp (a pre-comp) preserve the comps frame rate when nested in the second tab of the Composition Settings (Ctrl/Cmnd + k), but this does not and never has changed the duration of the composition.

 

If the timeline is set to frames (Ctrl/Cmnd click the time display in the upper left) and you change the frame rate, the duration of the comp will change because the comp is not based on Frame, not time.

 

If you open the Interpret Footage panel from the Project Panel by selecting and right-clicking or selecting the footage and choosing File/Interpret Footage from the menu, then change the frame rate, the duration of the footage will change. This is expected behavior.

 

That's also how it works in Premiere Pro (different keystrokes), Davinci Resolve, Final Cut, or any editing app that allows you to change frame rates for footage or timelines.

 

I've never had the length of a comp change by just changing the frame rate unless I have set the timeline to frames.

 

 

D
Dan Davis DigitalAuthor
Participant
October 30, 2024
Apologies, it does work exactly the same in 2024 I must have gaslit myself
into thinking it adjusted due to using mostly clips that end at a whole
integer of seconds.

The way you described how the composition setting works is not accurate
though. I'm not sure how other editing software handles it, but in AE in
the ctrl + k settings if my composition has a duration of 0:00:10:15 Base
30, and then I change only the frame rate the duration now reads as
0:00:10:15 Base 60 and if I just hit OK without adjusting the duration
value to compensate my comp has now in a very real sense changed duration
as in it now plays back for 10 and a quarter seconds rather than 10 and a
half seconds.
I appreciate that, like you confirmed, it has been like this in other
versions but I'm curious as to the reason? I can't think of a reason it
would be beneficial for someone's workflow to have the end of their comp
cut off by default when they change the frame rate, and I can imagine that
being bothersome for people who want to export an animation for multiple
formats.
J
Community Manager
jenkmeister17177426Community Manager
Jenkmeister
October 28, 2024

I don't see any difference between AE 24.6 and AE 25.0 in how this is handled. Do you have a project / footage you can share for us to try to reproduce the issue?

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