Video Alpha Channel To Flash CS3

Been a while since I’ve posted some tips, but here is a quick one for all you Flash & AfterEffects developers out there.

When exporting .flv with an alpha channel from After Effects to use within Flash on different color bakcgrounds, make sure to set your comp’s background color to 50% gray for best resaults within Flash. If you use a black or white background, the alpha channel will leave artifacts in these colors on the edges of the alpha. Somehow the 50% gray blends better when using various background colors in Flash.

Otherwise, simply try matching the color of the background you will end up using in Flash before pulling the alpha. You can set the composition background color by pressing  CMD+SHIFT+B (MAC) or CTRL+SHIFT+B (PC) or going to Composition › Background Color.