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[Alex Ilie <665878@xxxxxxxxxxxxxxxxxx>]

I changed the (Edit -> Preferences -> General ->) Output Mode to
"sdl_preview", whatever that is, and OpenShot works fine now. After I
start the application it uses 0% CPU, and when I drag a clip to the
timeline and click the Ruler it uses 100% CPU for a few seconds, but
then it stops.

What is the difference between "sdl" and "sdl_preview"?

-- 
openshot uses CPU for no reason
https://bugs.launchpad.net/bugs/665878
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Status in OpenShot Video Editor: New

Bug description:
Ubuntu 10.10 64
OpenShot 1.2.2 installed using the Ubuntu Software Center


Steps to reproduce:
- Open OpenShot, notice the openshot process uses x% CPU for no reason (no video processing, no clip added to the Project Files, ..). x=14 in my case.

(This might be a different bug, but still very similar:)
- Add an mp4 to the Project Files.
- Drag the clip to Track 2.
- Click the Ruler so the Play-head is inside the clip, notice the Video Preview shows an image from the video at that point, notice the openshot process uses y% CPU for no reason. y = 103, 67 (depending on the clip)