DirectShow Input with alpha

General
1

We managed to get NDI input via DirectShow but is missing alpha.
Is there a way to make DirectShow with alpha on CasparCG like videos with alpha?

Thanks.

2

Try a nightly build with native NDI support: http://casparcg.com/builds/CasparCG%20Server/master/

3

Hi hreinnbeck,

Sorry about the delay.
I was trying with the last build and no alpha… Maybe I’m doing something wrong.
casparcg-server-d442a8f84f68838f91c82f5f57c9634e84f7a23a-windows

I’m using NDI input as directshow input and on caspar server I’m using the command
PLAY 1-10 “dshow://video=NewTek NDI Video”

Seeing on the NDI monitor it have a alpha channel, but when put a image on layer 1 behind de dshow I can not see any part of the image because do not have transparency.

Is there another way that I can pass the NDI as an Input?

Tks.

4

PLAY 1-10 ndi://DEVICE-NAME/Source+Name

More info: https://github.com/CasparCG/server/pull/1112

1 Like
5

Hi hreinnbeck,

Working great! Awesome Work!

Thaks

1 Like
6

Hi Gaspar
You can also send audio through NDI with direct show?

7

Hi, Scarza.

I’m using the solution from hreinnbeck. Using NDI, you can send audio also.
We send graphics from one machine to another through NDI, so it’s the same graphics on the 2 machines. on the second machine that receives NDI you can use other graphics in front of NDI.
You do not need to use the direct show in this situation…

8

Hi - So the command if my NDI name is TALKSHOW - ch 1, will be: PLAY 1-10 ndi://TALKSHOW/ch1
?
best regards
Heine

9

Hi, it shoud be PLAY 1-10 ndi://TALKSHOW/1/
1 if you did’t rename it on casparcg config, by default it will be 1,2… for the name of the channels.
if the channel name is ch1 shoud be PLAY 1-10 ndi://TALKSHOW/ch1/