VISCA backend for Sony Cameras

[mauluchorst]

The Visca over IP backend does not work with Sony BRC cameras, the messages are missing the required header (Payload type/Payload length/Sequence number). See Sony VISCA over IP document page 10.
https://pro.sony/support/res/manuals/C456/26213181c7ae83822c3124b5b3b836ee/C4561001M.pdf
Midimonster is just sending the "payload" part - this might wor with e.g. PTZOptics cameras, but not with Sony BRC or FR cameras.

Any chance this will be implemented? Maybe an extra backend for Sony PTZ?

[cbdevnet]

Thanks for your effort and including a link to the documentation! Unfortunately the VISCA specs are somewhat manufacturer-specific.

I'll try to investigate whether making an optional header transmission part of the original backend makes sense, otherwise it might be easier to do a separate backend while sharing some of the code.