[MPlayer-dev-eng] Re: [PATCH] New video filter: deblendlogo

[Ivo]

On Thursday 24 February 2005 18:08, Oded Shimon wrote:
> Adds YV12 support to this deblendlogo filter.
> Almost a complete re-write of the original filter.
> Unlike original filter, it accepts only a filename, no offset, and the
> png image has to be the same res as the video frame.

Doing alpha deblending on chroma channels is utter nonsense. It only works 
if the logo mask is all white, which means there is no chroma, so the 
unblended chroma is preserved and only the luminance is corrected. With 
colored logo's this won't work.

--Ivo