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Creating pre-masked quicktimes
This message regards a phenomenon I noticed while watching Andrew Kramer’s tutorial on making a guy’s head explode. In his DVD series, action effects you can’t live without, or something like that, I noticed his quicktime files for the effects are pre-masked.
Refer to the tutorial, assisted suicide:
https://www.videocopilot.net/videotutorials/suicide/index.htmWhen he drops his quicktimes onto his comp, they have been matted. It’s just the muzzle flash and what would normally be black is a transparent. How can I do that? Usually the add blending mode is pretty good, but sometimes it changes my colors. Having pre-matted quicktime files I can drop onto my comp would be pretty sweet.
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1 Reply
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if you want to render a comp that has transparency, and you want to maintain that transparency in your render, you just have to render to a format/codec that supports transparency or an alpha channel.
refer to documentation or the help menu for specifics, but to get you started… from your render pane click ‘lossless.’ this should bring up an output settings window, on the right side there are pulldown menus for render options for alpha channels if you have a codec taht supports alphas (lossless, tif, tga, png…) you will be able to select rgb+alpha, # of colors+, and premultiplied or straight.
when you bring in that file into a program can use an alpha channel it should interpret the alpha as transparency automaticly (with some software you will need to invert the alpha, usually an import option).
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