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Old 12-30-06, 02:19 AM   #1
blitze
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Join Date: Dec 2006
Posts: 2
Default TV-out video vsync issues

Wondering if anyone knew how to get decent vsync happening under Linux's Nvidia drivers. Don't have such an issue with WinXP so it must be my setup as I am running the same video client VLC.

Problem is with fast moving scenes, the vsync goes up the creek. Is this a problem in general with Video playback fullscreen under Linux (64) or is it me?

Settings are as follows

xorg.conf:
Section "Monitor"

# HorizSync source: builtin, VertRefresh source: builtin
Identifier "Monitor0"
VendorName "Teac"
ModelName "TV-0"
HorizSync 30-50
VertRefresh 60
Option "DPMS"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 7600 GT"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "1"
Option "TVOutFormat" "COMPONENT"
Option "TVStandard" "HD480i"
Option "metamodes" "TV: nvidia-auto-select +1280+0, DFP: 1280x1024 +0+0; TV: nvidia-auto-select +800+0, DFP: 800x600 +0+0; TV: nvidia-auto-select +720+0, DFP: 720x576 +0+0; 1280x1024, NULL; 1024x768, NULL; 800x600, NULL; 640x480, NULL"
Option "AddARGBGLXVisuals" "true"
Option "NoLogo" "1"
Option "RenderAccel" "true"
# Option "TrippleBuffer" "true"
SubSection "Display"
Depth 24
Modes "1600x1200" "1280x1024" "1024x768" "800x600" "720x576" "640x480"
EndSubSection
EndSection


Nvidia-Settings:

# ConfigProperties:

RcFileLocale = en_US.UTF-8
ToolTips = Yes
DisplayStatusBar = Yes
SliderTextEntries = Yes
IncludeDisplayNameInConfigFile = No
ShowQuitDialog = Yes

# Attributes:

0/DigitalVibrance[TV-0]=0
0/DigitalVibrance[DFP-1]=0
0/ImageSharpening[TV-0]=0
0/ImageSharpening[DFP-1]=0
0/SyncToVBlank=1
0/AllowFlipping=1
0/LogAniso=4
0/FSAA=5
0/TextureSharpen=0
0/ForceGenericCpu=0
0/CursorShadow=0
0/CursorShadowXOffset=4
0/CursorShadowYOffset=2
0/CursorShadowAlpha=64
0/CursorShadowRed=0
0/CursorShadowGreen=0
0/CursorShadowBlue=0
0/FSAAAppControlled=0
0/LogAnisoAppControlled=0
0/RedBrightness=0.000000
0/GreenBrightness=0.000000
0/BlueBrightness=0.000000
0/RedContrast=0.000000
0/GreenContrast=0.000000
0/BlueContrast=0.000000
0/RedGamma=1.200000
0/GreenGamma=1.200000
0/BlueGamma=1.200000
0/TVOverScan[TV-0]=16
0/TVFlickerFilter[TV-0]=127
0/TVHue[TV-0]=0
0/TVSaturation[TV-0]=80
0/OpenGLImageSettings=1
0/XVideoTextureSyncToVBlank=0
0/XVideoBlitterSyncToVBlank=1
0/XVideoSyncToDisplay=256


Any help appreciated.
TV is a Teac 16:9 PAL unit using component via SCART from video card.
Ubuntu Linux Feisty 64
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Old 12-30-06, 05:12 AM   #2
pe1chl
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Join Date: Aug 2003
Posts: 1,026
Default Re: TV-out video vsync issues

Quote:
Originally Posted by blitze
Problem is with fast moving scenes, the vsync goes up the creek.
I think you will have to give a more specific description of the problem you experience.
From this "popular speak" sentence it is unclear to me if you have a problem with sync between the movie playback and the framerate of the card (resulting in tearing) or if your TV loses sync (picture rolls vertically).
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Old 12-30-06, 07:00 PM   #3
PenGun
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Join Date: Jan 2006
Posts: 93
Default Re: TV-out video vsync issues

If he is like the rest of us he's talking about tearing. It's definately a problem with recent drivers.
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Old 12-30-06, 10:35 PM   #4
blitze
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Join Date: Dec 2006
Posts: 2
Default Re: TV-out video vsync issues

Tearing is what I am talking of and it's a pity it seems a problem with the recent drivers.

If you watch the opening scene of StarGate Atlantis when you see the rapid action and scene changes and the wormhole travel, the screen gets tearing occurring on across the horizontal axis. Most annoying as this ain't a problem under the Windows XP Drivers and I would hope that at least Linux could be the equal here.

I have tried playing with the TV Flicker Filter but it seems to slow down playback to the point where the video slightly hickups/studders.

Any suggestions, any idea of if this being a problem, when we can hope to have it fixed?

Running 64bit Ubuntu on a 7600GT using VLC for playback.
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