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How can I tell the color depth?

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Adam Claude JonesHow can I tell the color depth?
by on Mar 17, 2011 at 12:54:11 am

How can I tell the color depth of an imported clip in AE?
Besides the thumbnail of the clip on the top left it only says the bit of the audio but not of the image. I need to know if AE is recognizing it at the right bit depth or not. Thanks.


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Kevin CampRe: How can I tell the color depth?
by on Mar 17, 2011 at 1:14:42 am

it should say something like millions, trillions or floating point.

millions would be 8bpc
trillions, 16bpc
floating point, 32bpc

if there is a '+' after it, that means there is an alpha channel.

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW


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Adam Claude JonesRe: How can I tell the color depth?
by on Mar 17, 2011 at 2:06:32 am

Well, the material is neither 8 bit or 16 bit. It is 10 bit, so what should it say?

Because at the moment is says Millions of Colors+(straight).


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Cory PetkovsekRe: How can I tell the color depth?
by on Mar 17, 2011 at 3:27:32 am

10-bit means 2^10=1024
1024^3 RGB is 1,073,741,824 or a billion colors.

Cory

--
Cory Petkovsek
Corporate Video


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Adam Claude JonesRe: How can I tell the color depth?
by on Mar 17, 2011 at 4:35:10 am

Yeah, but does AE lists Billion of Colors? I can only see either Million or Trillion.


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Dave LaRondeRe: How can I tell the color depth?
by on Mar 17, 2011 at 2:21:42 pm

Even if the footage is 10-bit (the current maximum for almost all commonly-available footage), there are still advantages to working in 16 or 32-bit in AE. Things like blurs become more subtle, for instance. The same applies to blend modes.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Kevin CampRe: How can I tell the color depth?
by on Mar 17, 2011 at 3:14:17 pm

after effects isn't going to change the footage if that is what your main concern is... it's not like an nle that might convert the footage to the working codec when you import it.

if the footage was encoded as 10bpc, 16bpc, 32bpc, or whatever, ae will retain that information, since it is in the file and that file has not been changed.

as dave points out though, if you have 10bpc footage then you'll want your project settings to be set at 16bpc to keep the 10bpc data. but you can still render that 16bpc comp back to a 10bpc codec... if you project settings were 8bpc then you'd lose some of that 10bpc data.

note that the project settings can be changed at any point, it does not need to be set at 16bpc when adding 10bpc footage to the project (again ae will not modify the footage at import), but the project settings should be 16bpc before rendering...

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW


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Adam Claude JonesRe: How can I tell the color depth?
by on Mar 17, 2011 at 3:33:55 pm

Ok then. But if AE doesn't change the footage, why is it that AE shows 10 bit footage as being Millions of Colors. Isn't that 8 bit?
Thanks again.


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Dave LaRondeRe: How can I tell the color depth?
by on Mar 17, 2011 at 3:42:43 pm

[Adam Claude Jones] "why is it that AE shows 10 bit footage as being Millions of Colors. Isn't that 8 bit?"

In this whole discussion you've never revealed the codec of the footage, so we don't know for certain what you're working with.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


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Cory PetkovsekRe: How can I tell the color depth?
by on Mar 17, 2011 at 9:40:48 pm

If it shows millions of colors, then it probably is 8-bit. Yes, 8-bit is millions and 16-bit is trillions, which you can see from the formula I posted earlier. Its more likely AE is correct on this point than that a person who told you it is 10-bit footage. The source may have been a 10-bit camera, but that means nothing if the footage was stored in an 8-bit codec.

Cory

--
Corporate Video


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Adam Claude JonesRe: How can I tell the color depth?
by on Mar 17, 2011 at 9:52:16 pm

Sorry, but nope. The material is 100% certain to be 10bit and it shows as such in other applications. It's AE somehow.


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Kevin CampRe: How can I tell the color depth?
by on Mar 18, 2011 at 5:58:01 pm

what's the container and codec?

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW


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Adam Claude JonesRe: How can I tell the color depth?
by on Mar 18, 2011 at 10:49:49 pm

The file is 10 bit 4:2:2 cineform in avi.

Yes, I have the cineform codec installed in the machine.

Thanks.


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Kevin CampRe: How can I tell the color depth?
by on Mar 21, 2011 at 4:39:20 pm

i can't create a 10-bit cineform, but i have tested 10-bit uncompressed quicktimes, and them come into ae as 'trillions' (despite being 'billions')... so, it may be that ae is not accurate in it's description of the color depth in the project window.

i still feel that ae is not changing the data contained within the file, but i understand your concern.

have you tried posting on adobe's ae forum? i would be interested in what they may have to add to this.

Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW


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