https://bugs.kde.org/show_bug.cgi?id=435793
Bug ID: 435793 Summary: 100% CPU usage when playing 4K clip that VLC plays at 15% CPU Product: kdenlive Version: 20.12.3 Platform: Appimage OS: Linux Status: REPORTED Severity: normal Priority: NOR Component: Video Display & Export Assignee: j...@kdenlive.org Reporter: ddascalescu+...@gmail.com Target Milestone: --- Created attachment 137646 --> https://bugs.kde.org/attachment.cgi?id=137646&action=edit CPU usage When I play 4K clips in Kdenlive like this one[1], CPU utilization goes to 100% on all 8 cores. Changing the preview resolution to 270p doesn't help at all. My laptop is a ThinkPad X1C with 16GB RAM and Mesa Intel UHD Graphics 620. I’m using KDE Neon 5.21.4 on X11. The Configuration wizard says "no hardware encoders found" and "Using MLT 6.25.0". VLC plays the same clips at under 15% CPU utilization. My goal is to scrub rapidly through clips, but dragging the playhead takes ~2 seconds to seek. [1]: https://drive.google.com/file/d/1WZsD2bXUJvvCMYVKSbuID539y4WVZ4NZ/view?usp=sharing -- You are receiving this mail because: You are watching all bug changes.