On Wed, 13 Jun 2018 09:06:32 +0200 didier gaumet <didier.gau...@gmail.com> wrote:
> Le 13/06/2018 à 06:00, Celejar a écrit : > [...] > > --avcodec-hw vaapi > [...] > > launching vlc with -vvv option may be handy sometimes Thanks! Using -vvv, I found this [hint for anyone else trying this: look for amber lines ;)]: avcodec decoder warning: thread type 1: disabling hardware acceleration Searching the web turned up this thread: https://forum.videolan.org/viewtopic.php?t=134770 Apparently, vlc uses ffmpeg libraries, which contain a limitation preventing the simultaneous use of multithreading and hardware acceleration. The workaround is to disable multithreading (although there's a warning that this may adversely affect performance with non-hardware-accelerated video): https://forum.videolan.org/viewtopic.php?t=134770#p446037 https://forum.videolan.org/viewtopic.php?t=134770#p446154 Doing this reenables hardware acceleration, and CPU usage drops to levels similar to those of mpv. Thanks much! Celejar
