[mythtv-users] Bob and TV-Out: refresh rate too low
Allen Edwards
allen.edwards at oldpaloalto.com
Sun Aug 24 14:22:48 UTC 2008
On Sun, Aug 24, 2008 at 5:31 AM, Thomas Börkel <thomas at boerkel.de> wrote:
> HI!
>
> Allen Edwards wrote:
>
>> I saw this on my system as well but assumed that since S-Video was
>> interlaced, why would you de-interlace it. Is this a problem?
>
> You are right. That would be the ideal solution. Otherwise MythTV
> deinterlaces an originally interlaced signal and then the TV encoder of
> the gfx card interlaces it again.
>
> The problem is, the NVidia driver will only passthrough the original
> interlaced signal, if you have the correct TV resolution and even then
> it does not work with all driver versions.
>
> But when I use the correct resolution (720x576) for PAL, then the driver
> outputs ca. 60 Hz and I don't know why.
>
> So, the 2nd best solution would be to have 800x600 with exactly 50 Hz,
> which worked in older driver versions, and use Bob. Unfortunately, newer
> driver versions use (or at least report) 49.99 Hz and then MythTV
> refuses to use Bob.
>
> Thomas
> _____________
I know this is probably not what you are looking for but this is what
I do for resolution and I am extremely happy with the picture on my 36
inch CRT TV:
Section "Screen"
Identifier "Screen1"
Device "Videocard1"
Monitor "Monitor1"
Option "TwinView" "0"
Option "metamodes" "TV: nvidia-auto-select +0+0"
Option "AddARGBGLXVisuals" "True"
SubSection "Display"
Depth 24
EndSubSection
Defaultdepth 24
EndSection
Section "Device"
Identifier "Videocard1"
Driver "nvidia"
Vendorname "NVIDIA Corporation"
Boardname "GeForce 6200 LE"
Busid "PCI:1:0:0"
Option "UseDisplayDevice" "TV-0"
Screen 1
EndSection
Section "Monitor"
# HorizSync source: xconfig, VertRefresh source: xconfig
Identifier "Monitor1"
Vendorname "Unknown"
Modelname "TV-0"
Horizsync 28.0 - 49.0
Vertrefresh 24.0 - 61.0
Option "DPMS"
Option "TVOverScan" "1.0"
EndSection
Note, the TVOverScan doesn't work but it is still in my file...
I also have a projector and it has its own setup. Also, this isn't
PAL so may not apply, but just in case it is useful, here it is.
Allen
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