Changing frame rate

[Lance Hitchings]

If I simply change the frame rate in the composition settings, AE keeps the duration and discards the extra frames.

In other words, I start out with 720 frame @ 30 fps and a duration of 24 seconds. After changing the frame rate, I now have 576 frames @ 24 fps and a duration of 24 seconds.

What I want is 720 frames @ 24 fps and a duration of 30 seconds.

[Roei Tzoref]

[Lance Hitchings] “If I simply change the frame rate in the composition settings, AE keeps the duration and discards the extra frames.
“

Ae will not discard frames but you now have frames taking more time so you have to make the composition’s duration to accommodate (make it 30 seconds)

Dave’s last response at the end of the thread could probably work for you too (and will be faster) i.e creating a new composition out of a correctly interpreted footage and replacing it with the composition in your timeline via Alt+drag or Ctrl+Alt+/

let’s do this the manual way step by step to see we are on the same page.

1. here I have an imported sequence of 720 frames @ 30 fps. I create a composition from this sequence same like you did by mistake

2. I want to fix that. first thing – interpret footage and set the frame rate at 24fps instead of 30

3. now I need to adjust the composition accordingly. in the composition settings I set the frame rate to 24fps AND also set the duration to 30 seconds

extend the duration of the layer to the end of my timeline

now I have a 720 frames @ 24fps at 30 seconds duration.

what do you say?

here’s a name your own price script that enables you to do this to multiple comps in one setup
https://aescripts.com/rd-compsetter/

Roei Tzoref
After Effects Artist & Instructor
♫ Ae Blues Tutorials

[Lance Hitchings]

Excellent! I think this is going to work.

Now I have to implement it, which is probably going to take all day. But so much better than having to start over from scratch, as Dave suggested.

If I have any more questions, I’ll be in touch.

Thank you so much!

FYI, I tried the script, but it didn’t preserve the frame count. I tried it a number of different ways and settings. It also discarded the extra frames and kept the duration at 24 seconds.

[Tom Jeffry]

Hey Lance.

I had the exact same issue but found the solution.

It’s in the “Interpret Footage” options for the sequence. See attached image.

Hope that helps.