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. [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? Regards, Daniel _______________________________________________ pkg-multimedia-maintainers mailing list pkg-multimedia-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-multimedia-maintainers