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Posted by Toby on 11/30/06 04:02
<ptravel@travelersvideo.com> wrote in message
news:1164821518.972435.145070@h54g2000cwb.googlegroups.com...
>
> Toby wrote:
>
>> We did absolutely top-notch chroma-keying for live reports to Europe
>> using
>> DVCPro 25. No problem at all if you use component instead of composite.
>> Composite chroma-keying will always suck.
>>
>> Toby
>
> I'm curious -- were you using a PAL system?
>
> I do chroma-key with D-25 (NTSC) and get satisfactory results, but not
> professional ones.
Nope. NTSC up straight. We are chroma-keying an interviewee in front of a
blue box screen with background added. However this is using a professional
JVC component SEG, on which you can vary gain and slice as well as hue.
One secret to good chroma-keying is to have the "bluest" blue or "greenest"
green possible, and to light it well.
1x chroma oversampling really only becomes a big problem when you are doing
multiple effects AFAIK.
My favorite chroma key story is when we had the German (now ex-)foreign
minister, Joschka Fischer in the studio here in Tokyo for a live interview
to Germany. He arrived with his band of heavies between high-level meetings,
dressed to the nines wearing a *blue* shirt. Yikes! What to do? We did a
quick test recording to show him the problem and try to convince him to
borrow and don a different shirt. We played him the footage--a head floating
above a ghostly body through which a panorama of Tokyo was visible. He
smiled. "Hey, that's not bad! I like the effect!"
............
Luckily since the shirt was much lighter than the blue curtain I was able to
play with the hue and gain until his body became opaque, with the background
losing only a bit of chroma...Phew!
Toby
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