I just found this cable: http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=173735&CatId=0
Do you think there is any chance it would work out of the box? I'm thinking no, but it's almost worth trying. Could I hurt anything by using it?
Thanks Tom
Look at the fine print on the bottom:
"Note: Your video source must provide a YPbPr component video signal from the HD15 port to use this cable."
I saw that, but chose to ignore it... :)
That cable is no different from BNC breakout cables that provide RGBHV... just that it has RCA ends on it and relies on the Green signal to be the Y (and have composite sync on it). I did a little 'net research this morning and concluded the following:
- EIA 770.1 and 770.2 define 480i and 480p analog component signals. I'm pretty sure that they allow unipolar sync signals like standard video.
- EIA 770.3 (and SMPTE-274M) define HDTV analog component. Colorspace is *slightly* different, and the sync is definately defined to be bipolar.
Basically, you could use one of those cables to get component out of RGB if it'll do sync on green. Most vid cards that do sync on green are unipolar, I think, so it'd be abusing the spec. It might work on some TV's and not others.
What you really want is a vid card that is smart enough to tell the computer it's doing Xv colorspace transformation, to get the YUV data... then not actually do it and barf out the YPbPr the three DACs. The sync should also be correct.
In other words... not likely.
I'm glad there are smart guys out there, cause this chair is holding up a dummy... :)
Thanks for the info, much appreciated. I think I'm just going to get the Crescendo unit, it seems to be the one to get. Now, do I get internal or external...I have one free PCI slot...but then I couldn't add another tuner...grrr... :)
Tom _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
