How can I develope live video call on Andiroid Phone

the THETA V uses UVC 1.5. Linux kernel support of UVC 1.5 is not fully implemented.

This may work:

State of UVC 1.5 Support for Controlling H.264

This is reported to work with USB OTG.

THETA V 4K Live Mobile Streaming - Free App

I don’t know about the YUV image format.