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

[ffmpeg at dx9s.net]

On 2017-09-28 14:20, Carl Eugen Hoyos wrote:
> I don't have decklink hardware but I assume it never outputs actual
> transparency.
> Or does it?
> 

 From what I understand about SDI, it is possible to send alpha 
information over an SDI link in certain configuration (RGBA) -- from 
what I read on Wikipedia ( 
https://en.wikipedia.org/wiki/Serial_digital_interface#Link_numbering ) 
on SDI. I will assume that it might be possible to access that 
information from such a decklink card (I don't have and SDI hardware as 
of yet, but might end up getting one)

--Doug (dx9s)