Hi,
I’ve found that when I apply a Transform or Scale effect to a video clip, like making it 105% rather than 100%, the video then slows down, so it is not smooth.
I tried using proxies, thinking it was the 4K video, but the exact same thing happens.
I’m on PC using the latest version.
Any ideas?
The sound is OK (not slowed down) but the slowed-down video now makes precise editing impossible, making kdenlive unusable for me.
Thx,
Mike
Do you mean playback in the project monitor? This is to be expected for PCs with older or not very powerful CPUs.
When effects are applied to a clip, Kdenlive uses the MELT framework to render the clip for preview/playback in the project monitor. This is done using only the CPU (GPU support is coming but will take a while).
There are several ways to overcome this:
- Use proxy clips
- Reduce the preview resolution
- Define a zone in the timeline, add that zone as a preview zone and use preview render
Hope this helps …
1 Like
Many thanks Bernd! I will give this a whirl.
Sure not having NASA’s cloud to run a transform filter is a bummer.
Any modern CPU should run a transform filter with zero overhead.
Even Kdenlive can run it with zero overhead…hilariously enough not when you press the play button tho.
With drop frames unchecked:
No filter:
Play button 10s—>10s
Next frame button 10s---->20s
Transform filter:
Play button 10s------>30s
Next frame button 10s---->20s
So it has no overhead on next frame button.
The transform filter is the worst thing on Kdenlive.