The FXScript Reference

For Final Cut Pro created by Joe Maller

ChannelCopy

FXScript Reference : FXScript Functions : Process

ChannelCopy(src, dest, copyAlpha, copyRed, copyGreen, copyBlue)

Additional Notes

YUV errors
by Joe Maller on 22 Oct, 2002 17:33, Applies to: FCP 3.04 from:

Occasionally, ChannelCopy will incidentally reset a target image buffer's color format when copying channels. Even though in theory it shouldn't matter what color format either image buffer is in, I've seen instances where an otherwise unexplainable RGB/YUV error directly resulted from mismatched color formats in a ChannelCopy operation. Converting the source image buffer to the same pixel format as the destination image buffer fixed the problem.

Skipping Channels
by Joe Maller on 6 Jan, 2004 03:58, Applies to: FCP 4.1.1 from:

Source channels are selected by their corresponding FXScript constant; kAlpha, kRed, kGreen and kBlue. To leave a channel unchanged, use kNone instead of a color.

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