Films, TV picture divides into broad horizontal strips?

09-19-2009	#1 (permalink)
lugoteehalt Linux Newbie Join Date: Jan 2004 Posts: 128	Films, TV picture divides into broad horizontal strips? On all film or TV type images, on all players, e.g. TvTime, MPlayer, the picture frequently gets turned into sort of roughly 4 horizontal bands, one above the other, each slighly displaced to the side relative to each other. This happens when there is a lot of change taking place in the image, or seems so. It is not really that serious a problem but I could do without it. Anyone any idea what is wrong. (twin core AMD, 4G RAM, fairly reasonable NVidea graphics card, "entry level games machine".) __________________ All power is violence; all power is evil.

09-21-2009	#2 (permalink)
adcxtreme Just Joined! Join Date: Sep 2009 Location: Delhi, India Posts: 5	Maybe your moniters refresh rate is low. Try increasing it under System-Preferences-Display. It should be atleast 75 Hz. If you cant select any higher frequency, try lowering the resolution of your moniter.

09-21-2009	#3 (permalink)
devils casper Super Moderator Join Date: Jun 2006 Location: Chandigarh, India Posts: 21,081	Post the contents of /etc/X11/xorg.conf file here. __________________ It takes a lot of time to be a genius, you have to sit around so much doing nothing, really doing nothing. - Gertrude Stein New Users: Read This First

09-22-2009

#4 (permalink)

lugoteehalt

Linux Newbie

Join Date: Jan 2004

Posts: 128

Quote:

Originally Posted by devils casper

Post the contents of /etc/X11/xorg.conf file here.

Code:

# lugo put in next block.

Section "ServerLayout"

    Identifier     "Layout0"
    Screen         "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "Module"
    Load           "dbe"
    Load           "extmod"
    Load           "type1"
    Load           "freetype"
    Load           "glx"
    #lugo Put in next line 'in order to fully support video overlay coming from the tuner card'.
    Load           "v4l"
EndSection

Section "ServerFlags"
    Option         "Xinerama" "0"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"

    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "CRT-1"
    DisplaySize     493    260
    HorizSync       31.5 - 47.8
    VertRefresh     60.0
    ModeLine       "1360x768 +0+0" 82.98 1360 1400 1600 1736 768 770 772 808
    Option         "CalcAlgorithm" "UseFrameBufferTiming"
    Option         "DPMS"
EndSection

Section "Device"

# lugo put in next line.
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8400 GS"
EndSection

Section "Screen"

    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "1360x768 +0+0; 1280x768 +0+0; 800x600 +0+0; 640x480 +0+0"
    Option         "RenderAccel" "true"
    Option         "AddARGBGLXVisuals" "true"
    Option         "AllowGLXWithComposite" "true"
    Option         "TrippleBuffer" "true"
    SubSection     "Display"
        Depth      16 
    EndSubSection
EndSection

Section "Extensions"
    Option         "Composite" "Enable"
EndSection

Great thanks both.

Vis xorg.conf, in fact it will not give 1360x768 on Debian Lenny, what I normally use. It will give it on Kubuntu. It uses 1280x768, and depth 24.

__________________
All power is violence; all power is evil.

09-22-2009	#5 (permalink)
devils casper Super Moderator Join Date: Jun 2006 Location: Chandigarh, India Posts: 21,081	Edit HorizSync and VertRefresh rates in Monitor section. Code: HorizSync 30 - 71 VertRefresh 50 - 160 __________________ It takes a lot of time to be a genius, you have to sit around so much doing nothing, really doing nothing. - Gertrude Stein New Users: Read This First

09-22-2009

#6 (permalink)

lugoteehalt

Linux Newbie

Join Date: Jan 2004

Posts: 128

Quote:

Originally Posted by devils casper

Edit HorizSync and VertRefresh rates in Monitor section.

Code:

HorizSync       30 - 71
VertRefresh     50 - 160

Thanks, I'll do that. However VertRefresh is 60 full stop - I'm using a TV.

__________________
All power is violence; all power is evil.

09-24-2009

#7 (permalink)

lugoteehalt

Linux Newbie

Join Date: Jan 2004

Posts: 128

Quote:

Originally Posted by devils casper

Edit HorizSync and VertRefresh rates in Monitor section.

Code:

HorizSync       30 - 71
VertRefresh     50 - 160

Didn't work unfortunately. Also tried lowering the resolution and that didn't work iether.

The vertical is fixed at 60 because it's a television instead of a proper monitor.

The problem occurs when the camera moves iether horizontally or vertically. It is as though the different parts of the picture were slightly behind each other in time - suggesting things are too slow.

__________________
All power is violence; all power is evil.

09-25-2009

#8 (permalink)

lugoteehalt

Linux Newbie

Join Date: Jan 2004

Posts: 128

Suspect it's a vsync problem, the picture is "shearing":

Quote:

vsync is not enabled. Why depends on your specific setup, in particular
if you use multiple display devices it will usually only work on one,
enabling composite extensions sometimes breaks it, 3D desktops often
have a separate setting to en- or disable it, -vo xv and -vo gl usually
try their best to enable it, others might not even support it.

Anyone know how to enable vsync? (K desktop 3.5, nvidea, Debian Lenny)

__________________
All power is violence; all power is evil.

10-03-2009	#9 (permalink)
adcxtreme Just Joined! Join Date: Sep 2009 Location: Delhi, India Posts: 5	related to this.. http :// ubuntuforums org / showthread.php ? t=646356 (i cant post urls.. so fix the link by removing some spaces..)

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