I am chatting with devs on OBS Studio and wanted to know if there is a way that CasparCG can send a graphic out over IP so that OBS can get it and key it on top of the video?
If possible, what kind of signal/protocol etc is used.
Am I right in assuming this is how it is done with ATEM?
NDI does indeed send a fill & key signal together if the source can supply it. And CCG is such a source. So I would believe in Windows you could feed OBS a signal from CCG which should be keyable straight away.
What was the trick to getting CasparCG to work with OBS over NDI? I currenly have it all setup and working.
However when I play content from CasparCG into OBS my lower thirds are displaying a black background which covers the content. Do I need to set any key and fill settings in OBS in order to get it to work?
you need to use the below programs to install NDI for Caspar output and OBS capture of NDI sources; https://ndi.tv/tools/
In Caspar you need to change your channel config to include (which can be used in more than one channel if you wish);
Start up the Caspar server then open OBS - add a new ‘NDI Source’ to your scene. Note that if you have more than one NDI source, visible all are listed in the drop down when configuring the NDI source in OBS.