[FFmpeg-devel] [PATCH]lavd/decklink_dec: Do not claim to output transparency information

[Maksym Veremeyenko]

29.09.2017 0:20, Carl Eugen Hoyos пише:
> Hi!
> 
> I don't have decklink hardware but I assume it never outputs actual
> transparency.
> Or does it?

it outputs or use internal keyer to put it over passthrow SDI signal.

in external keyer mode it accept BGRA frame and output two SDI signals: 
one for *fill* another one for *key*

-- 
Maksym Veremeyenko