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Re: q concerning premultiplied footage


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Re: q concerning premultiplied footage
by Lars Bunch on Mar 23, 2009 at 2:28:48 pm

Hi,

If you are bringing the keyed footage back into AE, it shouldn't matter if it is straight or premultiplied. AE should deal with it just fine so long as you set the footage interpretation correctly. You may want to make sure that AE is interpreting it right - select the footage and hit Command-F or Crtl-F and then make sure it is set to Pre-multiplied or Straight.

If you rendered the footage with a matte and it's coming in without one, it is possible that you rendered to a codec that does not support matte channels. I know 10 and 8 Bit Uncompressed codecs will not preserve the matte. Animation will, so you can use that if you need a lossless codec.

I hope this helps,

Lars

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Current Message Thread:

q concerning premultiplied footage by Ericsson Chu on Mar 23, 2009 at 1:59:12 pm
- Re: q concerning premultiplied footage by Lars Bunch on Mar 23, 2009 at 2:28:48 pm
- Re: q concerning premultiplied footage by Kevin Camp on Mar 23, 2009 at 2:40:10 pm

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