[mythtv-users] Problem with TV-out on geforce4 mx440
Andrew M. Bishop
amb at gedanken.demon.co.uk
Sat Mar 1 17:56:15 UTC 2003
Vincent AE Scott <mythtv at codex.dyndns.tv> writes:
> I have the TV connected up the tv-out via an s-video to SCART cable.
> i believe the TV supports NTSC playback, its an old Bang & Olufsen.
>
> My problem, arrises when i try and playback video thru the TV, it
> appears in black and white. I have setup X to use two seperate
> ServerLayout sections, one for the monitor and one for tv-out.
>
> With the following section:
> Section "Monitor"
> Identifier "TV"
> HorizSync 30-50
> VertRefresh 60
> EndSection
>
> i get black and white playback.
> as i'm in the UK (PAL-I) shouldnt the VertRefresh by 50?
Yes, if you are trying to play back video with 25 fps then a 50 Hz
refresh rate is going to give the best picture. With the default 60
Hz refresh rate the picture is not smooth.
My XF86Config-4 file contains the following sections that may be
useful for you. It defaults to 800x600 @ 50 Hz PAL TV composite
output with the NVidia drivers.
-------------------- XF86Config-4 --------------------
Section "Monitor"
Identifier "Generic Monitor"
HorizSync 15-50
VertRefresh 50-60
# PAL 60
ModeLine "640x480x60" 25.2 640 656 752 800 480 490 492 525
ModeLine "800x600x60" 39.7901 800 840 968 1056 600 601 605 628
# PAL 50
ModeLine "640x480x50" 21.0 640 656 752 800 480 490 492 525
ModeLine "800x600x50" 33.1584 800 840 968 1056 600 601 605 628
EndSection
Section "Screen"
Identifier "Default Screen"
Device "Generic Device"
Monitor "Generic Monitor"
Option "TVStandard" "PAL-I"
Option "ConnectedMonitor" "TV"
Option "TVOutFormat" "COMPOSITE"
Option "AllowMouseOpenFail" "true"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "800x600x50" "640x480x50"
EndSubSection
EndSection
-------------------- XF86Config-4 --------------------
--
Andrew.
----------------------------------------------------------------------
Andrew M. Bishop amb at gedanken.demon.co.uk
http://www.gedanken.demon.co.uk/
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