My fancy webcam uses something called micro-HDMI, which is not the same as mini-HDMI or standard ... This is the second ...

If both devices support MHL, you can skip the adapter and connect your devices using an MHL-enabled Micro USB-to-HDMI cable.

Fi, no audio/video lags, and you can even watch in 4K. How to Connect Your Smartphone to a TV Using a USB-C to HDMI Adapter .