What can I do to speed up Timeline editing operations: zoom and movement?

[Elusien]

Proxy Editing is one way to go (a feature in the next version of Shotcut - v20-06). See

https://forum.shotcut.org/t/v20-06-beta-2-is-available/18760/78

Preview scaling is also an option. See:

Preview Scaling

The Preview Scaling setting may be used to reduce the resolution of video processing when you are using a fair amount of filters, transitions, and track blending. This may help with the performance during the editing process. [image] However, keep in mind that the source video or images must typically be scaled down to the designed preview scale, and that will have a processing cost. See Proxy Editing for the remedy to that. Proxy generates substitute clips at the same resolution as preview sc…

Also, seeking can be better if you convert your video to edit-friendly beforehand. Look at Convert → Edit-Friendly in “Properties”