Chroma Key

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Because there are some technical and logistical limitations to the "chroma key" technique, a question-and-answer sheet has been developed by the studio technicians to explain these concepts:

> Q: What is the purpose of using .jpg images as backgrounds in my show?
> A: Using .jpg images gives you more creative choices for the look of your
> show, so that the standard blue, red, or tan curtain is not the background
> for almost every show.  Although using electronic backgrounds is
> encouraged, it can be impractical in many cases.
>
> Q: When would using .jpg images cause a problem?
> A: Usually the problems begin when there is more than one person on camera
> in a segment of your show.  Only one background can be generated at a time
> to work with one of the five cameras in the studio.  We do not have the
> capability to use 5 backgrounds for all 5 camera shots at the same time. 
>
> Q: So what is the best way to use .jpg images?
> A: If you have one person in the shot, like a news anchor man at a news
> desk, and the shot won't change during the segment, then the .jpg should
> be perfect.
>
> Q: What CD format should I use for saving .jpg images?
> A: The DVD player in the control room will play .jpg image files (photos)
> if they are saved on a CD-R or CD-RW.  The manual does not say that CD+R
> and CD+RW are supported formats.  However, manuals are often wrong, so
> feel free to use CD+R/RW at your own risk.
>
> Q: Can I manipulate the image in the DVD player?
> A: Yes!  The DVD player allows you to zoom in on your .jpg image.  If you
> zoom in at least once, you can then use the arrow keys to move the image
> up, down, left, and right.  You can zoom in with 3 levels of closeness.
> After the third zoom, it goes back to the standard view.
>
> Q: Why does my image disappear when I play it?
> A: The DVD player's Play Mode should be set to "Repeat Track" so that your
> image continues to play throughout your shooting session in the studio.
> Do not pause an image, because it will not stay in pause during your whole
> production.  If you pause an image for an extended period of time, the DVD
> player will eventually turn off, so the pause feature should not be used
> during production. 
>
> Q: Why won't the DVD player play my .jpg file?
> A: Make sure the file actually ends in .jpg and not .jpeg.  When you save
> the file at home, don't write .jpg as part of the file name.  Instead,
> below the file name field, choose .jpg in the "Save File As Type" field,
> then click Save.  Also, make sure the file is actually burned/written to
> your CD after you save it.  Always save a file on your hard drive first,
> then save it to CD and burn.
>
> Q: What if my .jpg is on a floppy disk and not a CD?
> A: Obviously you can't use a floopy disk with the DVD player, so we hope
> to be able to transfer it to CD for you, as long as you bring in a blank
> CD for us to do that.  We will be adding an office computer, but since we
> need it for more than this purpose, it will not be in the control room.
> Whenever possible, we strongly encourage you not to use floppy disks,
> because the turn-around time after a virus check and then final transfer
> could be more than a day.  Virus checks are required policy for anything
> that a studio manager uses on any computer system.
>
> Q: How else can I use .jpg images?
> A: If you are not using an image as a background, and simply want to use
> something small to incorporate into a logo or graphic of some kind, you
> can use a floppy disk or a CD.  However, either one will have to be virus
> checked because it is going into the Compix computer, not the DVD player.
> The DVD player is used for backgrounds.
>

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