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Posted by MG on 06/16/07 19:57
"Larry in AZ" <usenet2@DE.LETE.THISljvideo.com> wrote in message
news:Xns99517C03B38B1thefrogprince@69.28.173.184...
> Waiving the right to remain silent, Argo22 <markrc@gmail.com> said:
>
>> Hi All.
>>
>> At work, we have a Grass Valley, Master 21, master control switcher,
>> and a Inscriber CG Supreme system, output from a matrox digimix. When
>> the graphics are not going through the switcher, they display
>> correctly, with transparancies and edging effects. When it is keyed
>> through the keyer of the master 21, there seems to always be some
>> adjustment required. We are constantly having to adjust the clip for
>> each graphic, if not we get very noisy black lines, or broken up
>> graphics, transparencies do not display at all, and no edge effects
>> can be displayed correctly Obviously it is something with the
>> switcher. Just wondering if it is just how it handles the graphics,
>> and there is no ability to have transparent graphics, or maybe a
>> malfunction with it.
>
> I assume it's a non-linear keying system. Is it perhaps, stuck in a
> linear
> mode..? If not, are both key and fill signals connected and working..?
>
> --
> Larry Jandro
> Video Engineering & Equipment Rentals
> Scottsdale, Arizona, USA
> [Remove spamtrap in ALLCAPS to reply]
Definitely check the key signal into the switcher first. If it's not clean,
the rest can't work right. If it is clean, you either have some incorrect
keyer settings, or a switcher problem. It sure sounds like the key signal,
though.
mg
--
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