A question working in blackmagic duo 2

General
1

Hello,
I’m using output 4 in Duo2 like caspar output.
I’m using also inputs 2 and 3 .
when I play to output whith casper client someone of inputs in output starts with a black video during half second.
Any solution?
Thanks a lot.

Miquel.

2

I believe that’s the time it takes for the decklink producer to initialize.
If you want to be able to play instantly you could start it on beforehand on a layer and set the opacity and volume to 0.
Then when you want to switch to it, just set the opacity and volume to 1 to get it to show.

Edit: Examples:
Run this before, to have the input “stand by”:

MIXER 1-10 VOLUME 0
MIXER 1-10 OPACITY 0
PLAY 1-10 DECKLINK DEVICE 2 FORMAT 720p5000

Then to show the decklink:

MIXER 1-10 VOLUME 1
MIXER 1-10 OPACITY 1
3

Use the “Opacity” command to make the layer transparent and then play the input. After a few seconds fade the layer up. You can also use the “Volume” command to mute the audio when needed.

4

Great minds think alike @didikunz :wink:

Another way to do it is to run the decklink producer on a separate channel and then route it in when you need it.
Example:
Start the decklink producer on secondary channel:

 PLAY 2-10 DECKLINK DEVICE 2 FORMAT 720p5000

Route that layer on to first channel

 PLAY 1-10 route://2-10
5

Yes, but the routing uses more system resources that the Opacity I guess.

1 Like
6

It should be enough to do a LOADBG, then a PLAY. Decklinks in the background produce frames like normal, so as long as there is enough time between the commands it will skip the black section

1 Like
7

True. - I used this workflow, when I needed to often hide and re-show the input, as after a while it did not played any more. By just let it play and animate it out and back in it worked much better.

8

Hello, thans for yours answers, but how to apply solutions in casparcg client?

9

hello, it works fine, thanks a lot.

10

Hi there, I’m not sure is this right topic but I have problem with playing transparent PNG, I want to play full frame 1280x720 PNG channel logo which is completely transparent except little logo in top left corner, but when I played it in layer 1 it covers completely my layer 0 which is video. It’s looks like it is not transparent and I get white picture on output.

Is there any AMCP message or any server setting which will fix my problem?

Thanks in advance.

11

Additionally, I did exactly what is described here: Watermark All Playout
I’m not sure why it’s not working correctly. Is there any server setting which can broke this?!

12

Hi
I download the file and play Ok , with transparent
Are you sure you play at over top layer?
ex. video backgraound PLAY 1-1 video_back PLAY 1-2

13

yes, exactly i Play video on layer 0 like PLAY 1-0, and this PNG i play like PLAY 1-1 and it covers my 1-0 layer completely.
Is there any other info I can share with you?

14

I play in a screen consumer and as you can see play Ok nothing special only two layers
Can you also post your config file ?

15

I’ll do, but first I want to try to update to 2.3.0. server version as I now realize that I’m still on 2.0.7. version so maybe that version had a problem.

16

I have some problems installing 2.3.0 version, what do you suggest which version to install?