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i just need white!!!!!!

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Iain MacKinnon
i just need white!!!!!!
on Jun 8, 2011 at 12:45:56 pm

why doesn't this work?
i filmed someone in a white room and want to key out the walls and ceiling but due to some tiny colour differences in the whites, my keying looks absolutely awful and bitty. and, should i use chroma, color or what key????
what is the best way to make all my whites white?

Iain MacKinnon
Video Editor
Splash Productions Music Complex

http://www.splashproductionscomplex.com

I used to spend my time wondering, now it's used up rendering


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Chris Tompkins
Re: i just need white!!!!!!
on Jun 8, 2011 at 12:58:15 pm

Key out White is not the best choice.
Did you light evenly with keying in mind?

You can apply multiple keys.

or
Rotoscope it.

Chris Tompkins
Video Atlanta LLC


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Mark Suszko
Re: i just need white!!!!!!
on Jun 8, 2011 at 2:13:22 pm

Try a luminance (luma) key. Might want to color-correct the footage first. Then don't try to do this in dv codec, use prores.

Also, try playing with your blending modes.


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Stephen Smith
Re: i just need white!!!!!!
on Jun 8, 2011 at 2:35:21 pm

If the Luma Key doesn't work I would try the Color Key.

Stephen Smith
Utah Video Productions

Check out my Motion Training DVD

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David Battistella
Re: i just need white!!!!!!
on Jun 8, 2011 at 2:42:49 pm

Send to Color.

or in FCP do a secondary color correction on the whites.

When you have the whites white and blown out then try to do the key again.

David

Why not do it today?



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Mark Suszko
Re: i just need white!!!!!!
on Jun 8, 2011 at 4:42:03 pm

When all else fails, you can roto this using photoshop's fast masking tool.


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Shane Ross
Re: i just need white!!!!!!
on Jun 8, 2011 at 9:24:09 pm

Keying white...good luck. Even professionally shot, this is a nightmare. A commercial editor I know had to try to deal with this...for some reason the DP and director thought they could just use WHITE instead of Blue or Green to key...because they wanted both of those colors on the actors. After spending 3 days trying, he gave up. And they reshot the commercial.

You will not get a clean key from white.

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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Mark Suszko
Re: i just need white!!!!!!
on Jun 8, 2011 at 11:06:01 pm

I wish I had the wherewithal to make a financially sporting proposition out of that statement. All I will say is that it can be done, because I've already done it, at least once. But like any chroma key, to succeed it has to be well and evenly lit, and you need to work in more than a 4:1:1 color space, if you are at all serious about this...


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Rafael Amador
Re: i just need white!!!!!!
on Jun 8, 2011 at 11:36:38 pm

[Mark Suszko] "All I will say is that it can be done, because I've already done it, at least once. But like any chroma key, to succeed it has to be well and evenly lit, and you need to work in more than a 4:1:1 color space, if you are at all serious about this..."
Sure can be done and get a good results when done properly, but makes no much sense when colored backgrounds gives more options for pulling keys: Why to use just the Y channel when you have also Cb, Cr, R, G and B?

White backgrounds are OK as they are: somebody with a white behind.

I would start, as David suggests, going to Color, to try to fix the background.
Try to pull a clean key and fix the subject on a second step if needed.
rafael

http://www.nagavideo.com


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Shane Ross
Re: i just need white!!!!!!
on Jun 9, 2011 at 12:46:48 am

It CAN be done. Given time and money, most anything can be done. But when faced with the "low low budget" projects of today, the amount of time and effort put into this to make it look right means that when you are all done, you would have made $.14/hour...

Shane

GETTING ORGANIZED WITH FINAL CUT PRO DVD...don't miss it.
Read my blog, Little Frog in High Def


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David Battistella
Re: i just need white!!!!!!
on Jun 9, 2011 at 9:35:26 am

It is for sure a multiple pas job, but I have had to create a seamless white background and that can be done. Once that is done, then you can try to pull a key from that but it is not a very effective way to try to pull a clean key.

As shane said, it will take a fair bit of time and effort just to get the whites, then keying that is another story.

DV Matte Pro might be a place to start for the keying partion as it is geared toward attempting to pull keys in the 4:1:1 color space which makes for very dirty mattes.

But hey, I can get a pretty good key off a white wall in my ichat chats these days.


David

Why not do it today?



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Rafael Amador
Re: i just need white!!!!!!
on Jun 9, 2011 at 11:30:41 am

Complicated and time consuming, but that's the kind of jobs where video editors learn and show their skills.
rafael

http://www.nagavideo.com


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David Battistella
Re: i just need white!!!!!!
on Jun 11, 2011 at 7:31:26 am

[Rafael Amador] " but that's the kind of jobs where video editors learn and show their skills."

Or the kind of job where we discover the lack a lack of skill in the work of others. :)

Just one more reason production needs to communicate with post.


David

Why not do it today?



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Iain MacKinnon
Re: i just need white!!!!!!
on Jan 14, 2013 at 4:49:39 pm

Finally got it. used a mix of all suggestions. i will never try and key white out again. :)

Iain MacKinnon
Video Editor
Splash Productions Music Complex

http://www.splashproductionscomplex.com

I used to spend my time wondering, now it's used up rendering


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