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Not sure to buy Chromanator...

Posted: Tue, 2nd Aug 2005, 12:24pm

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mattio

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Hi, im having problems with the chromanator demo. Because im quite a noob at keying i couldn't chroma key this image...

http://img289.imageshack.us/my.php?image=poorgreenscreen4go.jpg

I didn't have absolutely any luck with keying this out. If i see that it can be done then i will definitely buy chromanator and if you do chroma key this well can u please post the settings so I can see what I have done wrong.
It could even be that the greenscreen is so poor that it can't be done.

Any help would be much appreciated.
Posted: Tue, 2nd Aug 2005, 12:31pm

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Simon K Jones

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Where is your greenscreen? All I can see is somebody with pale skin wearing a grey top standing against a grey wall.

A greenscreen needs to be at least a little bit green to work. smile
Posted: Tue, 2nd Aug 2005, 12:32pm

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Xcession

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I'm afraid i cannot see any green in this picture whatsoever. Is this a joke? Moreover the colours which are present in that picture are all roughly the same. You might as well try and key out a polarbear in a blizzard.

Last edited Tue, 2nd Aug 2005, 12:36pm; edited 1 times in total.

Posted: Tue, 2nd Aug 2005, 12:34pm

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Hendo

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As has been mentioned, your screen does not appear to be green (or blue). I doubt any program will key that out, especially cos the actor is also wearing gray.

But Chromy has some great tools to cater for poor footage, such as animated garbage mattes (with up to 100 points). You could draw a garbage matte around the actor, feather it, and then you'd get a decent result. It'll be time consuming, though. I had to do a bit of that in the following case:

Before


After
Posted: Tue, 2nd Aug 2005, 12:43pm

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mattio

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Thanks for replying guys...

The green screen i have (a bed sheet) does look green from the human eye but when taken with a mini dv camera it comes out gray crazy

Do you think i should just buy a REALLY luminous green and that would come out much better?
Posted: Tue, 2nd Aug 2005, 12:45pm

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Xcession

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If the green is truely green and i'm talking the same kind of green that you see in those pictures of the forest scene above, then all it should need is adequate lighting.
Posted: Tue, 2nd Aug 2005, 12:47pm

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Simon K Jones

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The better the greenscreen, the better the results. That's the rule. Chromy can handle bad greenscreens better than many other programs, but it's always going to be better/easier if you have a decent greenscreen.

If you screen looks green to the human eye, chances are you have you camera set up wrong. Main culprit would probably be the white balance, if you've got that set wrong then the colours might come out squiffy. Make sure you have the white balance and exposure set up correctly, then try again. Basically, if the greenscreen is green but is coming out grey on your footage, there's something wrong with your camera. smile

Also make sure you've lit the greenscreen well - you don't want it dark and murky.
Posted: Tue, 2nd Aug 2005, 12:57pm

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mattio

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Does a JVC GR-DV3 have white balance and plus on the "Filmmakers Forum" I have posted a topic about my camera if you have any idea's please reply on that topic
Posted: Tue, 2nd Aug 2005, 1:00pm

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Hendo

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Do you have a digital still camera? If so, take a picture of your green screen and post it here. That way we/you know whether it's your JVC video cam that's the problem, or if it's the screen colour/lighting/etc.
Posted: Tue, 2nd Aug 2005, 1:01pm

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mattio

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my sony cybershot broke a couple of weeks ago so i can't.
Posted: Tue, 2nd Aug 2005, 1:05pm

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Simon K Jones

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For camera settings you should check your camera manual, it will have full details.
Posted: Tue, 2nd Aug 2005, 1:07pm

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mattio

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aaahhh ive got it now thanks Tarn but could you help me with something else about my camera?
Posted: Tue, 2nd Aug 2005, 1:12pm

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Simon K Jones

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erm, I don't know until you tell me what the problem is.
Posted: Tue, 2nd Aug 2005, 1:18pm

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mattio

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ok well go into the "filmmakers forum" and click on JVC GR-DV3 noise problem and thats it.
Posted: Wed, 10th Aug 2005, 6:45pm

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Rabbit Hole Pictures

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I can find absolutely no green in that picture what so ever, i dont think that is even really a green screen.

if you tried dying a piece of cloth green, it doesnt work. i attempted that for my first green screen, but it doesnt give you a good, or maybe just doesnt give you a composite.

you need a new green screen. what i did was i went on ebay, and searched green screens. i put a bid for about 79 USD and i got it. id recommend doing that.

i hope this helps.
Posted: Wed, 10th Aug 2005, 6:48pm

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Rabbit Hole Pictures

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i forgot to mention, that i did it with a bed sheet too, it always comes out none green, just buy one trust me.
Posted: Wed, 10th Aug 2005, 6:57pm

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mattio

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thanks justin see I cant really afford 80USD (im not american im english) im a very low budget filmmaker so any other ideas???
Posted: Wed, 10th Aug 2005, 7:01pm

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Arktic

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Decent green material can be had from any fabric shop - you just need to get as near to 'pure' green as possible.

(Think the kind of green that ASDA employees wear!)

Buy the material, and stitch/sew it into a large enough square/rectangle - it shouldn't cost you too much.

I hope this helps smile

Cheers,
Arktic.
Posted: Wed, 10th Aug 2005, 7:57pm

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mattio

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see I already know that you get them from fabric shops but the problem is theres no fabric stores near me sad theres a place called Linens Direct near me that does bed sheets curtains etc and thats where I got my original one but it doesnt come out right so I really need help
Posted: Thu, 11th Aug 2005, 1:00am

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Rabbit Hole Pictures

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yeah im a low budget film maker too, but trust me, beg the crap out of your parents, or save up. its what i did and its COMPLETELY worth it.

or maybe you can do this, instead of dying it green, why not try dying it blue and have a bluescreen

just a thought.