> the capabilities of the device. One of the bits is VID_TYPE_CHROMAKEY,
> described in the doc as "Overlay is Chromakeyed".
>
> What does this mean, and how would it be useful?
> Does it relate to the chromakey value provided to the VIDIOCSWIN ioctl?
It tells you that you need to provide a chromakey value and paint blocks of
screen for doing overlaying
Right now I believe the only chroma key driver is the temporary magic driver
for the matrox g200 yuv scaler
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