Mailing List Archive: MythTV: Users

1920x1080 playing a 720p video?

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kennethjohnson6 at gmail

Nov 24, 2009, 8:14 AM

Post #1 of 4 (440 views)
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1920x1080 playing a 720p video?

What am I supposed to change my settings to in playback settings because
when I watch 720p on my 1080 screen it distorts itself every few frames
how do I stop this.

p.s I've tried going to menu while playing a video and selected
interlaced in video scan but still every 20 seconds or so it will
distort a bit until scene changes or whatever it does.
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jyavenard at gmail

Nov 24, 2009, 2:22 PM

Post #2 of 4 (401 views)
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Re: 1920x1080 playing a 720p video? [In reply to]

2009/11/25 Ken Johnson <kennethjohnson6 [at] gmail>:
> What am I supposed to change my settings to in playback settings because
> when I watch 720p on my 1080 screen it distorts itself every few frames
> how do I stop this.
>
> p.s I've tried going to menu while playing a video and selected
> interlaced in video scan but still every 20 seconds or so it will
> distort a bit until scene changes or whatever it does.

I'm not sure what you mean with "distort" ; it sounds like you're
seeing tearing.

Changing the resolution of your screen won't fix your problem..

Make sure you have activated Xv v-sync ; you can try enabling opengl v-sync.

If using VDPAU; disabling Composite in the xorg.conf file is required
is using nvidia drivers 180.xx ; and helps for some with 185.xx and
above
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kennethjohnson6 at gmail

Nov 24, 2009, 8:00 PM

Post #3 of 4 (387 views)
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Re: 1920x1080 playing a 720p video? [In reply to]

I am using an ASUS P5N7A-VM mobo nvidia 9300 integrated graphics intel
Q8300 proc. I currently have my playback video settings set at VDPAU
Normal on a 1920 by 1080 monitor. Your solution did show much better
performance especially when the OSD appears and disappears but when I
watch a movie in 720p now there isn't as much tearing as before after I
did what you said I added this line

Section "Extensions"
Option "Composite" "Disable"
EndSection

now my xorg.conf looks like this

Section "Screen"
Identifier "Default Screen"
DefaultDepth 24
EndSection

Section "Device"
Identifier "Default Device"
Driver "nvidia"
Option "UseEvents" "1"
Option "DPI" "100x100"
Option "NoLogo" "1"
EndSection

Section "Extensions"
Option "Composite" "Disable"
EndSection

Is there anything else that I should be doing? and sorry if I didn't post the message properly i'm new to this.

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newbury at mandamus

Nov 25, 2009, 9:18 AM

Post #4 of 4 (376 views)
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Re: 1920x1080 playing a 720p video? [In reply to]

Ken Johnson wrote:
> I am using an ASUS P5N7A-VM mobo nvidia 9300 integrated graphics intel
> Q8300 proc. I currently have my playback video settings set at VDPAU
> Normal on a 1920 by 1080 monitor. Your solution did show much better
> performance especially when the OSD appears and disappears but when I
> watch a movie in 720p now there isn't as much tearing as before after I
> did what you said I added this line
>
> Section "Extensions"
> Option "Composite" "Disable"
> EndSection
>
> now my xorg.conf looks like this
>
> Section "Screen"
> Identifier "Default Screen"
> DefaultDepth 24
> EndSection
>
> Section "Device"
> Identifier "Default Device"
> Driver "nvidia"
> Option "UseEvents" "1"
> Option "DPI" "100x100"
> Option "NoLogo" "1"
> EndSection
>
> Section "Extensions"
> Option "Composite" "Disable"
> EndSection
>
> Is there anything else that I should be doing? and sorry if I didn't post the message properly i'm new to this.
>

You can add the following sections/options to your xorg.conf

Section "ServerFlags"
Option "DPMS" "true" # To control screenblanking
Option "DontZap" "false" # Allows ctrl-alt-backspace to
# restart X.
EndSection

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
Option "TripleBuffer" "true" # Allocates more 2D buffers
Option "DRI" "true"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS" "true" # To control screenblanking
EndSection

Then use ctrl-alt-backspace to restart X (no hard boot required).

Geoff

--
Please let me know if anything I say offends you.
I may wish to offend you again in the future.

Tux says: "Be regular. Eat cron flakes."
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