The joy of cheap knock-off cameras.
Apologies in advance, but this is likely going to get technical, and I don't know a realistic way around that
- first, you need to determine which control protocol(s) the camera supports? VISCA of IP, ONVIF, etc
if you are lucky, the camera will support one of the better known IP camera control protocols.
- Then, there are various software control systems (some stand alone, others plugins to OBS, etc) and there are hardware joystick controls. The better hardware control interfaces have toggles/controls for Pan, Tilt, and Zoom speeds (each separately controlled, though I've seen Pan&Tilt speed often combined). You'd need to test a control system that corresponds to your camera's control interface
So, the simple browser interface, on name brand cameras I've worked with, have many orders of magnitude more control options than are exposed in the simplistic (intentionally) device web GUI.
My Panasonic NDI PTZ camera has a 1,300+ pg manual documenting ALL of the command line control settings available. It is possible to write your own script that sends camera control commands to the camera... or some folks simply figure out (camera dependent) the syntax, and put the command line into a browser. I doubt a knock-off mfg did the same, or even tested a decent portion of the command interfaces (so good luck if you come across bugs). But once you determine which command language/interface/protocol the camera uses, there will be documentation out there on the settings options.
if you get lucky, your camera will support one of the major IP camera control protocols, and will be decently implemented (the cheaper the camera, the lower the probability of success). The there is the PTZ-controls plugin here, as well as PTZOptics.com has a free OBS plugin that supports VISCA (iirc).
you may get lucky, or you may have to be diligent.. you could use some software that supports the control protocol your camera uses, and it still not work...
https://prisual.us/products/sdi-ptz-camera-20x mentions ONVIF and further down visca Too bad you didn't get the 20N (NDI camera instead) though web page indicates PoE and IP video out? anyway....