If you have *good* quality s-video signal, the luminance bandwidth can be arbitrarily good, and the chroma bandwidth can be pretty decent (although still modulated on the color subcarrier). I don't know what the bandwidth filtering specs are for "standard" Y/C (s-vid)... maybe there aren't any. All YPbPr does for 480i over Y/C is not modulate the chroma on the subcarrier. The biggest improvement is from composite to Y/C, since the luma and chroma don't share the same spectrum and can thus be allocated a higher bandwidth and less interference with each other.
-Cory
On Fri, 20 May 2005, Neil wrote:
OK. I guess I could clarify that. *GOOD* S-vid isn't that much worse than component. Unfortunately, many of the cards with tvout have such sucky quality that it's unusable. The homebrew hardware I built to do s-vid from VGA gives results essentially the same as the component adapter... just modulated as NTSC. I have long since given up on TVOUT from video cards for quality reasons.
Hi Cory, I totally disagree that component is worse than svideo. Below is the order of quality from good to best: 1. composite(1 video and LR audio channels in RCA interface)
2. s-video (looks like a PS2)
3. rgbhv
4. component(YPbPr in RCA interface)
5. dvi I think you really meant composite. It's true that s-vid is better than composite. I really can't see any difference between 3, 4 and 5. Quality of the 3 are awesome most especially in HDTV. Here is a good reference:
http://www.michaeldvd.com.au/Articles/VideoConnectors/VideoConnectors.asp Thanks, Neil
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************************************************************************* * Cory Papenfuss * * Electrical Engineering candidate Ph.D. graduate student * * Virginia Polytechnic Institute and State University * *************************************************************************
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