wiki/en/translated_usb-tethering.md

Connecting a smartphone or tablet on android for FPV-VR and other GS programs to NVR via USB

USB Tethering, also known as USB Ethernet, is an Android OS function for using a phone as a USB modem, which appears as a network card. This allows us to connect the phone and NVR with a regular USB cable and get a fast network between them. Unfortunately, in most cases, USB terhering is only available on tablets with a SIM card module. If you do not have one, and the USB modem is not activated, you will have to connect via usb-ethernet or wifi.

You need to install kernel and rootfs with rndis_host support and upload /usr/bin/wifibroadcast, /usr/bin/telemetry, and add the following to interfaces:

#USB Tethering
auto usb0
iface usb0 inet dhcp
    pre-up modprobe rndis_host
    pre-up sleep 4

To enable you need to:

• Connect your smartphone or tablet with a cable to the disconnected recorder
• Go to settings - Network and Internet - Access point and modem
• Turn on the recorder
• As soon as the USB modem item appears active in the Android menu, enable it.
• Launch FPV-VR, select the Manually (stream) section in the settings, set the video settings to the codec used (rtp/264, rtp/265) and telemetry settings to mavlink.
• Exit settings and run "Start video and osd".

Alternatively, you can use the QOpenHD application with similar functionality.

Also available option without restarting of the recorder.