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S-Video came about to get around the traditionally bad comb filters in
TV sets. The luminance is separate and without the chroma would be
B/W. Otherwise, the luma portion should be of roughly the same if not
exact quality as a that same portion of a composite signal. Of course, each of RGB or any other analog component could appear as monochrome if connect to a composite input. Hans Verkuil wrote: On Friday 01 December 2006 16:05, Han Holl wrote:Hello,In the last two weeks there has been a long thread about video through a scart -> s-video converter being monochrome. As several members of this list already hinted, scart is a form factor, but not necessarily a standard. A standard conforming scart plug has no luminance/chrominance pinout, and without serious looking electronics (http://www.nexusuk.org/projects/rgb2svid/) conversion from rgb to s-video is not possible. The scart -> s-video adaptors are meant for devices that have a switch of menu setting to change the pinout on the scart socket. So the question is, what is 0.3.2q doing exactly ? The only plausible answer would seem to be that it's using the composite signal, but if I use the the composite signal from 0.8.1, the result is pretty bad: much, much worse that the 'impossible' s-video signal from 0.3.2q. (Of course it's possible that the composite cable I use is responsible for the difference in picture and audio quality, but it seems unlikely). If there is a bug in 0.3.2q causing this, I would love to re-introduce this bug in 0.8. What I'd like to know is this: is it normal for composite video to be hardly useable, or is the general opinion that composite maybe not quite as good as s-video, but that it's good enough to watch routinely, and that there must be something wrong with my composite setup.'Hardly useable'? I understood that the only problem was that it was B&W? Or are there other artifacts? If there are other problems with it, then I'd like to have a small MPEG sample so I can see what it looks like. It might give me a hint. I haven't had time to look into this further, but you aren't forgotten :-) HansCheers, Han Holl _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel_______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel |
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