Send Alpha-channel
You can send alpha-channel by SRT.
You need:
- 
encoder side: SRTStreamer 0.9 (or above) 
 - 
studio side: SRTMiniServer 1.8 (or above) 
 
Common workflow is:
- 
generate NDI/SDI with alpha-channel (in vMix, Adobe Premier etc). 
 - 
capture this NDI by SRTStreamer and send to SRTMiniServer 
 - 
SRTMiniServer handles this SRT feed and generate NDI/SDI output with alpha-channel 
 
Few screenshots:
 
Prepare NDI with alpha on vMix side:
 
 
Turn on this flag: