"USB Camera" can let your iOS device connect to USB WebCam or video capture card. You can record video or capture snapshot, OR turn your phone into a wireless IP Camera via build-in RTSP and HTTP Server for security monitoring WITH Bi-directional audio support, you can use your browser to view, of course, include "IP Camera" App.
"USB Camera" can push the video and audio to RTMP/SRT live media server (e.g. Push to YouTube, Facebook), and use for network broadcast. It supports the rtmps security protocol and SRT protocol and it can also push the media to multiple media server at the same time. It also supports HEVC over RTMP and can be used for YouTube Live currently.
It supports Multi Cam feature which allows you to connect multiple external USB cameras or video capture cards simultaneously and process into PIP video then transfer.
It supports loop-recording. It can set auto-segment when recording and auto-delete old video archives when no enough storage.