Kdenlive/Manual/Effects/Alpha manipulation

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Effects - Alpha manipulation

General Information about Alpha Manipulation

Alpha Manipulation, more commonly known as Chroma Key compositing is an effect that changes the background of the picture to a different background the editor may want.

More information can be found on the pages for the effects themselves:

  1. Chroma Key (formerly Blue Screen)
  2. Color Selection



  1. Alpha gradient
  2. Alpha operations
  3. Alpha shapes
  4. [[Special:myLanguage/Kdenlive/Manual/Effects/Alpha manipulation/Blue Screen|Chroma Key ]
  5. Color Selection
  6. Rectangular Alpha mask (Formerly Mask0Mate)
  7. Rotoscoping
  8. Key Spill Mop Up


Compositing Reference Material

For some background, the Wikipedia article in alpha compositing is useful. See also Porter, Thomas; Tom Duff (1984). "Compositing Digital Images". Computer Graphics 18 (3): p253–259 1984 pdf