Properly retime from 24 to 12 fps

[kakubei]

Hello, I was wondering what the proper way would be to retime a whole animation I've got in 24fps down to 12fps.

I've got audio added in Moho so this is the first thing I noticed got desynced when I opened the Project Settings and changed from 24 to 12 fps. Obviously I need to fix this (probably manually?).

The second thing is that the animation is now twice as slow. I know this is expected, but that's why I'm asking here for a proper way to retime the whole animation and not have it slow down.

I'm aware that I can grab all the keyframes and move them while holding down the Option key so they move in a "relative" manner but this is very error-prone.

I just found out I can use Animation-> Rescale Keyframes... that seems to have done a pretty good job but now my audio refuses to play

Anyone have any good suggestions for accomplishing this?

Thanks.

[hayasidist]

change all the keyframe intervals to 2? (e.g. consolidate channels - yeah - every layer and change to 2s)

[kakubei]

change all the keyframe intervals to 2? (e.g. consolidate channels - yeah - every layer and change to 2s)

Ah, hadn't thought of that. Thanks. Will give it a try.

[hayasidist]

You might need to nudge some keys one frame -- e.g. if you want everything on 1, 3, 5, etc if, right now you have a key on 6, you'll need to shift it to 5 or 7 etc...

Or maybe try in post -- render the whole and throw out all the even (or odd) numbered frames? Depends how long / complex the whole thing is!!

Maybe someone else has a better idea?

[slowtiger]

You might need to nudge some keys one frame

I don't think that's necessary, unless there's one uniform movement like a running car or so. I mix FBF parts from TVPaint regularly with Moho parts, the FBF is mostly on 2's so I use Moho's on 2's setting on the keys as well, but any irregularity is invisible.

Exception: when I have a walk in place on 2's and have that cycle in Moho traverse the screen I have to make sure all keys are on the first frame of the cycle, otherwise I get a horrible scattering.