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Vegas to Flash with Solid Chromakey (Alpha Channel)
Greetings all –
I stay busy – so I’m not one for relentless posting. However, this forum was instrumental for me to figure out how to create that cool website trick where a person walks onto the website, so I want to let you know how I got it done. In other words, how to take video footage shot in front of a blue/green chromakey screen, apply the Vegas chromakey filter to create the mask, and export (render as) a file that can be converted into Flash with the Alpha channel intact.
Once you have your footage and chromakey set up in Vegas, render the clip using the mov (QT6) file format. My “Project Properties” rendering mode is set to best. Over in the “Render As” I selected “mov,” and selected the “3mbs” template. Once again, confirmed the project quality as “Best” and moved over to the video tab. I set the “Field Order” to “None,” since it is meant for web delivery. I set the “Video Format” to “Animation.” This allowed me to select “32bpp color” as the “Compressed Depth.” (A trick I learned here. As I understand it, moving the compressed depth up from 24 to 32 allows the file to carry the alpha channel info, which requires the additional 8 bits.)
I wish to roundly endorse Moyea Flash Video MX Pro as a solid tool for converting video files to flv and/or swf files. (It’s bargain priced at $70.) It handles all my Flash video conversions GREAT! To be able to render an flv file with alpha channel info you need to hunt down and install the VP6.4.2 codec.
After this process I was able to load the flv file into my Flash creation software (I use SwishMax 2) and VOILA! Seamless integration of chromakey video into the Flash format. Woo-Hoo!
Best regards to all –
David Lewis
http://www.lewisproduction.com