an After Effects Portal

  Two resource roundups were posted on PVC this week: Alpha channels: premultiplied vs straight and “Unmult” with and without a plug-in ...

Here are some AE items new this week that were not already mentioned here: Channel effects tutorials on 'luma to alpha' ( part1...

After Effects Help explains Alpha channel interpretation: premultiplied or straight , and Chris & Trish Meyer have an extended discusion...

Alpha channels are grayscale channels in addition to the color channels of a file. They define transparency and often delineate objects o...