On Mon, 2005-11-14 at 23:49 +0000, Jon Burgess wrote:
Leo Márquez wrote:
I don't have the hardware info (only cpu athlon 1800) but the connector to be used is s-video to scart-tv. We have planned to set softdevice and use the tv-out of a vga card to connect it to the tv.
Personally I use a DXR3 card as is mentioned elsewhere. Another card that I've tried briefly is the PVR350, see http://ivtvdriver.org/ Both cards have a good quality S-Video TV-Out but the DXR3 plugin seemed to work a little better then the PVR350 plugin.
My personal experience seems to be that most TV-Out on VGA cards are designed to run best at 60Hz output for the US market. When configured to run in 50Hz PAL, for a UK TV, it seems like the VGA modelines are still clocked at 60Hz with some (poor) down-conversion to 50Hz being done in the TV-Out circuitry. This looks fine on static content but any movement results in juddering or blurring. This is especially noticeable on the scrolling text trackers often present on news programmes.
This doesn't appear to be just a pure interlacing problem. I've tried tweaking the 50Hz TV-out of EPIA, NVidia & ATI VGA systems and none of them match the quality of hardware designed for dedicated TV usage, e.g. DXR3, PVR350 (and presumably the FF cards although I've not tried one myself.).
I used a dxr3 for a long time. I am now using a g450.
I must say that with directfb & softdevice the g450 does produce a good picture via TV out.
The setup is a bit of a pain - I think the documentation should be updated.
The one outstanding issue I have is that I cannot view 16:9 material croped/latterboxed onto my 4:3 display without distortions. (This is a known problem, but there is now solution yet)
Outside this, I certainly would recommend a matrox over a dxr3 for vdr.
Jon
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