[FFmpeg-user] DeckLink Duo 2 duplex_mode doesn't work

[Mustafa Al Ani]

Hi Rik,

I think the duplex mode is only supported in ports 1&2.

Apart from that, I have never been able to enable video input on 3&4, I
spoke with Blackmagic support but never got a useful answer. Never trust
what they write in their products descriptions.

Please let me know if you got video input on 3&4, I would very much like to
see it working.

Regards,
Mustafa