NO ALPHA CHANNEL AFTER FUSE (Full Version)

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Andy Browne -> NO ALPHA CHANNEL AFTER FUSE (11/29/2004 1:42:31 PM)

I imported an animated lower third into Liquid Edition 6.0. The import went fine and everything rendered properly. By nature, I always fuse my rendered effects and then store them on a 200gb hard drive for subsequent reuse.

This is the first time I have tried that technique with a file containing an alpha channel. When I place the rendered (yet unfused) file on the timeline, the alpha chanel works fine. However, when I fuse the file (or export as AVI), I loose all my alpha channel capability.

I read all of Kevin Brunner' s replies on what to do, even making an MOV file but all failed.

Digital Juice needs to get a copy of LE6 in house so they can do some testing and validation. Is this a Pinnacle problem or a DJ problem?

Has anybody had success?





Kevin Brunner -> RE: NO ALPHA CHANNEL AFTER FUSE (11/29/2004 11:34:35 PM)

Andy what does the " fuse" process do? If it renders the Uncompressed AVI or Animation MOV to a different codec then you will loose the alpha. Most codecs are only 24 bit; 8 for each RGB. You need to use a 32 bit codec, 8 for each RGB & A.

If you are wanting to save disc space you can render the video and alpha to seperate DV files (or alpha to JPEG-MOV at 98 or 99 quality) and then use the luma values from the alpha to key... making it the alpha. This does work, but the alpha isnt quite as clean as if it where an uncompressed file.




Andy Browne -> RE: NO ALPHA CHANNEL AFTER FUSE (11/30/2004 3:09:46 PM)

Kevin... If I were to use the Juicer to make my AVI, is it a 32bit codec? I sent your reply off to Pinnacle for their response but between you and me, I won' t hold my breath.




Kevin Brunner -> RE: NO ALPHA CHANNEL AFTER FUSE (11/30/2004 11:06:26 PM)

Yes if you choose Full Frames (Uncompressed).

Other options when 32bit or millions of colors+ selected:
PNG MOV (Smaller than the rest but takes longer to render)
Animation MOV (From my tests the fastest codec)
TGA seq (tried and true standard on most)
TIF seq (might not work for you)
PICT seq (old Mac file type)




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