Upon downloading the latest Windows 10 version of Minecraft from the store, I tried out the '/videostream' command, as it sounded interesting provided I'm working with websockets. I was not able to get the command working.

I have a websocket version running on 'localhost:8000/ws'. Connecting to it using the '/wsserver' or '/connect' command works.

When using the command '/videostream localhost:8000/ws 10', I ran into the first issue. The command does not allow a slash in the 'serverUri' argument:

When handling on 'localhost:8000' and connecting to it using '/videostream localhost:8000 10', I ran into the second issue. The command does not allow a colon in the 'serverUri' argument:

When trying the command after that with a 'serverUri' that was allowed, I ran into the following error message:

This is probably not intended, as the '/wsserver' command works fine otherwise.

Edit: Upon further investigation it appears the last message is sent by the client when sending it the VideoStreamConnect packet which was added in 1.10.

This issue occurs on all platforms, not just on Windows 10.