Bug 433917

Summary: Use nice priority for proxy rendering tasks
Product: [Applications] kdenlive Reporter: Mazin07 <mazin07+kde>
Component: Rendering & ExportAssignee: erjiang <erjiang>
Status: RESOLVED FIXED    
Severity: wishlist CC: erjiang, fritzibaby, snd.noise
Priority: NOR Flags: fritzibaby: Brainstorm+
Version First Reported In: 20.12.2   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: https://invent.kde.org/multimedia/kdenlive/-/commit/421b1137bb5eae9a9c5a69f0bee835620e533343 Version Fixed/Implemented In:
Sentry Crash Report:

Description Mazin07 2021-03-03 18:33:25 UTC 
As tested on 20.12.2, Kdenlive starts background rendering jobs for generating proxies at the default priority (0). This can cause noticeable UI latency in the main window, even though it's a background task and the user should be able to work while it's happening.

My suggestion is to run these ffmpeg or other background tasks with niceness 5 and the equivalent on Windows. Or, if desired, make the niceness configurable in Kdenlive settings.
Comment 1 farid 2021-03-04 18:51:28 UTC 
We'll look into this...
Comment 2 erjiang 2022-05-03 03:05:24 UTC 
A merge request was opened for this feature: https://invent.kde.org/multimedia/kdenlive/-/merge_requests/296
Comment 3 erjiang 2022-05-11 05:56:29 UTC 
The previously mentioned patch has been merged.