Bug#881489: playback scaled to 4k fullscreen is choppy

[Sebastian Ramacher]

Control: tags -1 + moreinfo

On 2017-11-12 11:23:24, Daniel Pocock wrote:
> Package: vlc
> Version: 2.2.6-1~deb9u1
> 
> 
> Trying to play a video file with a resolution 720x526, 25fps, MPEG-1/2
> (problem also observed with other videos at different resolutions)
> 
> With the window maximized and the option "Always Fit Window" selected,
> it appears to zoom to 3:1 and playback appears good.
> 
> When fullscreen is selected (up to the 4k resolution of the display), I
> frequently see what appears to be a horizontal tear across the middle of
> the picture, especially when there is a lot of movement in the video.
> 
> Using mpv 0.23.0-2+b2 at fullscreen with the same video I don't observe
> the problem.
> 
> I don't have libvdpau1 installed due to problems with the frame rate[1]
> 
> Hardware is Intel i3-7100U CPU @ 2.40GHz and Kaby Lake integrated
> graphics Intel HD Graphics 620 (Kabylake GT2)

Please provide the output of vlc -vvv. Did you try selecting different video
output modules (e.g. the OpenGL one)?

Cheers

> 
> Regards,
> 
> Daniel
> 
> 
> 1. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=856535
> 
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-- 
Sebastian Ramacher
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