Get external key

General
1

Hi
I get " failed to enable external key"
My card is decklink duo 2
My declink config:

<decklink>
			<device>1</device>
			<latency>normal</latency>
			<keyer>external</keyer>
			<key-device>2</key-device>
			<key-only>false</key-only>
			<buffer-depth>3</buffer-depth>
			<custom-allocator>true</custom-allocator>
		</decklink>

What is the problem?

2

In the Decklink control panel applet set the output of channel 1 to SDI 1 & 2:

Grab1
Grab1623×673 16.7 KB

And then get rid of the line <key-device>2</key-device>. That should do it.

3

How about if i use older decklink card?
Like decklink studio 2?

4

If you don’t want fill+key output, then you can ignore this error. It tries to enable it by default, but it looks like your card doesnt support it.

5

Exactly i need it and I can’t have this

6

This card is very old and, if I remember right, can not do fill & key. But what is the problem? The Decklink Duo 2 is very cheap, why bother with older cards?

7

Yes you are right it doesn’t support key