You can send alpha-channel by SRT.
- 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
prepare NDI with alpha on vMix side
turn on this flag