Bug 379781

Summary:	Useless multithreading for preview
Product:	[Applications] kdenlive	Reporter:	Filip Krejdl <krejdl.filip>
Component:	Rendering & Export	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED UNMAINTAINED
Severity:	normal	CC:	fritzibaby, snd.noise
Priority:	NOR	Flags:	fritzibaby: Brainstorm+
Version First Reported In:	17.04.0
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Rendering with all threads

Description Filip Krejdl 2017-05-13 14:57:14 UTC

Created attachment 105510 [details]
Rendering with all threads

First of all, I know that is experimental function but for 8 threads in my PC it's a pity.
When I use 1 thread, Kdenlive works fine but sometimes I have CPU bottleneck. It's not so bad but maybe, if I could use for preview 2=>8 threads at the same time, 1 thread was wouldn't so busy. It's not important but it's a pity.
Rendering works fine with all 8 threads and rendering time is more than twice faster vs with 1 thread.
How it looks: https://youtu.be/67z88hs49OU
My PC:
OS - KDE Neon 5.9.5
Kernel - 4.8.0-51
CPU - Intel Core i7 7700
RAM - 16GB 2400Mhz

Comment 1 farid 2021-03-27 15:34:55 UTC

Thanks for your report, this option has been removed altogether from Kdenlive since it is very buggy. We expect better support for multithreading in future versions of MLT.