Dragged in video not playing correctly

If a screen recording stutters or scrubs incorrectly, first compare the source file with its behavior in Rotato.

Isolate the problem

1. Play the source file in QuickTime Player.
2. Import it into a simple Rotato scene with one device.
3. Check the Screen clip's timing and preview a recognizable moment.
4. Render a short sample to distinguish an editing-preview issue from an output issue.

Try another encoding

Export a fresh copy from the app that created the video. Try a broadly supported format such as H.264, or an editing format such as ProRes when file size is less important.

If the source needs transparency, choose an alpha-capable format. Re-encoding to ordinary H.264 removes the alpha channel.

Report a reproducible issue

Keep the original file for comparison. Send a short sample, your app version, and the difference between preview and export to Rotato support.