Blackmagic Forum

I have a project with two different clips, 30 seconds each.

Both are set to 125% speed, and both have speed warp enabled.

If I close Resolve, open it again, open the project, and try to preview some frame of the first clip, it takes several seconds until Resolve shows the frame. After this, I can preview both the first and second clips with acceptable speed.

However, if I close Resolve again, it will happen again, regardless of what clip I try to preview.

I understand speed warp uses the Neural Engine, but is it expected to have a long initial warm-up time (each time Resolve is restarted) before frames can be previewed?


Thanks.

I've seen this since the very first appearance of Speed Warp, so for me at least this is normal behavior.

Yes, it's slow.

Thanks.

I just wonder if that operation can be cached in some Resolve future version in order to reduce the initial waiting time.

Since it's a temporal effect, I'd assume it's doing some analysis. I tend to use one of the lighter algorithms while working on it and switching to Speed Warp before rendering.

BTW: Happy New Year!

Uli Plank wrote:Since it's a temporal effect, I'd assume it's doing some analysis.

Maybe it always analyzes the whole project....

I thought about some per-clip analysis before posting this topic, but I had kind of discarded this hypothesis because after you had waited several seconds to preview the first clip, all future footage you add to media pool can have the speed warp effect previewed instantly, eventhough Resolve doesn't know what kind of footage will be added to the project.

It seems like it always does the exact same thing, because all future clips don't present that behaviour. That's why i thought it could be changed to caching in some future release.

That is, unless Resolve always analyze the whole project before the first frame of a speed warped clip can be previewed, and uses the existing media to train its neural network. But if that was the case, all existing media at the time of previewing would affect the output of the final effect.

Uli Plank wrote:BTW: Happy New Year!

Happy New Year!