(1) https://github.com/phoboslab/jsmpeg-vnc (2) https://github.com/oneam/h264bsd
js264-vnc tries to combine (1) with (2) to capture screen sharing server and client.
Encoder: H.264 Protocol: Websocket Decoder: H.264 (no plugin)
jsmpeg-vnc.exe -b 400 -s 640x480 -f 30 -p 9008 "desktop"
High resolution output needs a high-end mobile device.