Don’t know how much help t

Don’t know how much help this will be…

I have done similar effects – fade in for graphics/text – by transcoding the frames of the clip into separate image files, using a simple script to linearly adjust the alpha channel (transparency) of the graphics and call some ImageMagick (linux commandline graphics programs) to blend that with the frame images, and then transcode the image files back into a movie clip. Sorry, but in the commandline unix world its actually pretty trivial –

In the Windows/Mac/GUI world you’d have to find some package like FCP or something that has a plug-in that hopefully does exactly what you want, I suppose…