https://bugs.kde.org/show_bug.cgi?id=376893
Bug ID: 376893
Summary: Bad performance of kaffeine when watching HD channels
compared to VLC and other players
Product: kaffeine
Version: unspecified
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 104205
--> https://bugs.kde.org/attachment.cgi?id=104205&action=edit
kaffeine --debug using libVLC with args: -v
Hello,
I watch DVB-T2 HD channels in H.265 but the video stutters. This problem does
not appear in VLC, SMPlayer or the Gnome Video player. I can record a movie in
kaffeine, and watch it without stuttering with VLC at the same time. So it is
not that the computer is not fast enough to handle it.
If I play the record with kaffeine, all 4 cores are almost at 100% and the
complete system (and the cursor) becomes a sluggish. (The sluggish cursor is a
known bug/disadvantage of using wayland under heavy load.)
If I play the file in any other player, the video and the system is completely
fine, although the 4 cores are at ~ 80 %.
I have no graphics acceleration via VDPAU for video decoding of H.265. I have
an AMD RS880 chip, that supports VDPAU, but not for the 'newer' H.265.
I tried many possibilities of libvlc parameters, but did not get it to work
like in VLC. I was even unsure if those parameters had any effect, partly. The
attached logs show kaffeine --debug with libvlc -v and -vv, as well as a
working vlc -vv for comparison.
Some parameters of my system: Fedora 25, but with vanilla linux 4.10, x86_64. I
use Gnome 3 under wayland. kaffeine from today's GIT.
Any ideas?
Thanks in advance.
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