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Alpha Channel Problem

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Dave Edwards
Alpha Channel Problem
on Aug 15, 2010 at 10:52:37 am

I can't seem to get the Alpha channel working properly when importing to Sony Vegas. I have a very simple scene with no background.

It did work once but since has either not worked or else only the last frame of the clip was correct.

I have a couple of objects which are lit and a target camera is following a spline,- that's it. There is no background.

I'd be very grateful for any help with the proper settings for this.


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Oliver Clarke
Re: Alpha Channel Problem
on Aug 15, 2010 at 12:12:45 pm

Im not sure about vegas, but After Effects doesnt seem to ever recognise my alpha channels from C4D. Unless i use .RLA format, which i take it Vegas wont handle. I have resorted to importing both the beauty pass and alpha as separate layers and making the alpha into a luma key matte. Again I dont know is this is possible in Vegas. but its certainly worth a try.


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Dave Edwards
Re: Alpha Channel Problem
on Aug 15, 2010 at 5:11:56 pm

Thanks, Oliver. I managed to make the thing work,- I'm not entirely sure how, - and took screenshots of all the settings!


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Dave Edwards
Re: Alpha Channel Problem
on Aug 15, 2010 at 1:46:42 pm

Incidentally, I can see the Alpha channel pictures as a series of .TIFF stills in my target folder.


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