Speed ramps not playing back correctly.

[connorokeane]

Hey all,

Weird one that I can't seem to find any answers for online.

I've got a project with many instances of speed ramping and time remapping. Mostly just going from 100% to 50%. Footage was shot at 50fps, working in a 25fps sequence.

The speed ramps worked fine and played back smoothly a couple of months ago. Opened the project today to find none of them play back smoothly. They all look as though I've applied speed ramping to clips shot at 25fps.

If I start a new sequence and add a clip from this project to it, they can be speed ramped just fine, but copying a speed ramped clip from the old sequence into the new sequence does nothing to fix playback of the old speed ramping.

I tried rendering one of the old speed ramped clips to see if playback would be smooth on the render but not in Premiere, but to no avail. I've attached that clip as a reference.

I really don't want to have to re-do all of the speed ramping as there are about 3 dozen instances.

Any assistance would be super helpful!

Cheers.

[kglad]

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

<"moved from using the community">

[connorokeane]

Oh thank you! I didn't realise I'd posted in the wrong spot. My bad!

[kglad]

(no problem.)

[Hutch Harris]

I think a good first step is to restart Premiere & your computer, assuming you haven't done so already.

A few other ideas...

• Delete your render files (Sequence > Delete Render Files) and try rendering a section of your timeline. Better playback?
• Another thing to try - right click the clip and change your time interpolation to Optical Flow. See if that plays back more smoothly?
• I don't know what would have changed, but would be a good idea to confirm that Premiere is reading your 50fps footage as 50fps and not 25 for some reason (In project window, right click > Media File Properties)

[connorokeane]

Thanks for your time man!

I've tried each of those potential fixes and unfortunately the problem persists.

Optical flow smoothed the motion but introduced a bunch of strange warping over the top of the footage.

[Hutch Harris]

EDIT: Just want to put up top, definitely double check all of your sequence and clip framerates. I've been "certain" I had a project set up correctly in the past only to realize halfway through that I had a framerate mismatch, etc.

Well, that at least narrows it down. Seems like Premiere is reading the footage as 25fps (Optical Flow is introducing the warping by generating frames).

You could try offlining a clip (right click clip on timeline > make offline) and then reconnecting it (right click > link media). Maybe that'll be the same as sort of "re-adding" it to the sequence, which you've said appears to work.

If that doesn't work, a potential workaround could be copying, removing, then re-applying the speed ramp:

• Copy your clip to clipboard on the timeline (hit cmd/ctrl + c).
• Right click that same clip on the timeline > remove attributes, and make sure only Time Remapping is checked (as a heads up this will temporarily change your clip length on the timeline). Click OK.
• Right click your clip > Paste Attributes, make sure only Time Remapping is selected. Click OK.
• Clip should play back correctly. Definitely a bit tedious but at least you don't have to re-do the time remapping from scratch.

[connorokeane]

Double and triple checked to be sure and the sequence and clip frame rates are all set up correctly.

Offlining then re-linking didn't work unfortunately, neither did copying the Time Remaping attributes. What's even weirder, is that if I paste the Time Remaping attribute from a problem clip to a different clip from the same video file, the time remapping plays back fine on the different clip, but not when re-pasted to the problem clip.

Going to take a break and look back at it later, this is making my brain melt hahah.

Thanks again!

[Hutch Harris]

Bummer 😞

Last idea, could try duplicating your sequence, and in the copied version, change your sequence settings to 50fps then back to 25. I don't really have a good guess as to whats causing that behavior but maybe that would 'force' the time remap to understand your clips are 50fps and not 25.

Hoping someone with more knowledge than me can help with a fix!

(Afterthought - this does sound like more of a bug, would back kglad's advice on posting to the Bug Report forum. Hopefully will get you quicker engagement from Adobe's team!)

[SkyReel]

I had exactly the same problem. Its was driving me mad....
My fix: My original footage was 29.97 and my seqence was 30 fps. In sequence settings I changed timebase to 29.97.
WFM

[SkyReel]

sorry this is NOT a fix..... the problem returned the next day.

[Peru Bob]

Please use the free MediaInfo and post a screenshot of the properties of your media in tree view:
https://mediaarea.net/en/MediaInfo

[marcinp_1985]

You can check "select playback resolution" on the bottom of "program monitor". I had the same issue when i select "1/2" resolution. When I set it to "full" - everything is ok.