Your message dated Sun, 12 Nov 2017 18:23:48 +0100
with message-id <20171112172348.cb3ku62cvrtgg...@ramacher.at>
and subject line Re: Bug#881489: playback scaled to 4k fullscreen is choppy
has caused the Debian Bug report #881489,
regarding playback scaled to 4k fullscreen is choppy
to be marked as done.
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--
881489: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=881489
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
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)
Regards,
Daniel
1. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=856535
--- End Message ---
--- Begin Message ---
On 2017-11-12 18:06:51, Daniel Pocock wrote:
>
>
> On 12/11/17 17:43, Sebastian Ramacher wrote:
> > 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)?
> >
>
> I had a look at the preferences window, video tab. The "Output" option
> was automatic.
>
> Looking at the logs, I notice it was selecting xcb_xv (XVideo)
>
>
> [00007f3a54001268] xcb vout display debug: connected to X11.0 server
> [00007f3a54001268] xcb vout display debug: vendor : The X.Org Foundation
> [00007f3a54001268] xcb vout display debug: version: 11902000
> [00007f3a54001268] xcb vout display debug: using screen 0xf5
> [00007f3a54001268] xcb_xv vout display debug: using XVideo extension v2.2
> [00007f3a54001268] xcb_xv vout display debug: using adaptor Intel(R)
> Textured Video
> [00007f3a54001268] xcb_xv vout display debug: using port 74
> [00007f3a54001268] xcb_xv vout display debug: using image format 0x30323449
> [00007f3a54001268] xcb_xv vout display debug: using X11 visual ID 0x20
> (depth: 24)
> [00007f3a54001268] xcb_xv vout display debug: using X11 window 0x03200000
> [00007f3a54001268] xcb_xv vout display debug: using X11 graphic context
> 0x03200002
> [00007f3a54001268] core vout display debug: VoutDisplayEvent 'fullscreen' 0
> [00007f3a54001268] core vout display debug: VoutDisplayEvent 'resize'
> 3840x2017 window
> [00007f3a54001268] core vout display debug: using vout display module
> "xcb_xv"
>
>
>
>
>
>
> I manually changed it to "OpenGL GLX video output (XCB)" and the problem
> goes away.
Good, hence closing.
>
>
>
> [00007f10c8001268] core vout display debug: using vout display module
> "xcb_glx"
>
>
>
>
> Looking at the mpv logs as well, it appears to be using OpenGL by default:
>
>
>
> [vo/opengl] Initializing OpenGL backend 'wayland'
> [vo/opengl/wayland] failed to connect to a wayland server: check if a
> wayland compositor is running
> [vo/opengl] Initializing OpenGL backend 'x11probe'
> [vo/opengl/x11] X11 opening display: :1
> [vo/opengl/x11] X11 running at 3840x2160 (":1" => local display)
> [vo/opengl/x11] Detected wm supports NetWM.
> [vo/opengl/x11] Detected wm supports FULLSCREEN state.
> [vo/opengl/x11] Detected wm supports ABOVE state.
> [vo/opengl/x11] Detected wm supports BELOW state.
> [vo/opengl/x11] Display 0 (DP1): [0, 0, 3840, 2160] @ 30.000000 FPS
> ...
> [vf] Video filter chain:
> [vf] [in] 720x576 [64:45] yuv420p bt.601/bt.601-625/bt.1886/limited
> CL=mpeg2/4/h264
> [vf] [out] 720x576 [64:45] yuv420p bt.601/bt.601-625/bt.1886/limited
> CL=mpeg2/4/h264
> [cplayer] VO: [opengl] 720x576 => 1024x576 yuv420p
> [cplayer] VO: Description: Extended OpenGL Renderer
>
>
> Is there any other detail I should look for in the log?
>
> Should the automatic setting use a different default?
Depends(TM), I guess.
Cheers
>
> Regards,
>
> Daniel
>
--
Sebastian Ramacher
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