Blackmagic Forum

Is there a way to apply "Optical Flow" to specific parts of a clip, but without splitting the clip?

I only want to apply the "Optical Flow" to portions that have their speed changed.
There are clips with speed points, and most of them are 100% speed, but it slows render down because even for 100% speed parts (where I don't need any motion generation at all), Resolve is doing "Optical Flow" stuff.

I've tried the adjustment clip, but it doesn't work for this purpose.

The reason for this requirement (of not splitting the clips) is I'm monitoring the usage column for each clip, in order to avoid duplicates (a same clip appearing more than once in the project), so the usage for a clip can't be greater than 2 (I'm considering a "clip" the video + audio, that's why the usage is 2).

There is not. Stabilization only works on the entire clip.

I just split the clip and call it a day.

If you first split, then apply optical flow, then create a compound clip, would that work?

Jim Simon wrote:There is not. Stabilization only works on the entire clip.

I realized it.

I just didn't think it will do stuff in a 100% speed clip, considering everything is set at 60 fps.

Marc Wielage wrote:I just split the clip and call it a day.

I do it normally, but for this specific project, I use the "Usage" column to detect if media was used only once in the project. Hence why I can't split the clips in this specific project.

Wouter Bouwens wrote:If you first split, then apply optical flow, then create a compound clip, would that work?

The split clips would still be counted in the "Usage" property for the source media, so I wouldn't know whether that media was used only once.