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Luma and Chroma Clamping

Symptom #1: Footage Dims

“My footage dims as I go into a transition and returns to normal after I leave the transition.”

Background

Although FCP is a digital video editor, meaning that it uses RGB values to calculate luminance and chroma values, it adopts a YUV workspace so that you are always working with true broadcast values. (Professional editors work with YUV source material and need to deliver YUV products.) You can run into problems if some element in your project does not use YUV to process video colors.


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