VXG RTSP Server is a free, complete RTSP server application for Android developed by VXG Demo Apps. It can stream video and audio to RTSP clients, capturing video and audio from mobile camera and microphone. The application is based on the VXG Capture SDK, which is available on GitHub.

This RTSP server application boasts several key features such as multi-channel support that allows simultaneous encoding of two streams: Main and Secondary channels. It also supports RTP by TCP and UDP, RTP over HTTP tunnel, and hardware acceleration with a new hardware-accelerated encoder up to UHD resolution. Additionally, it has low latency for network stream with a special API to control encoder latency. The audio codecs supported by this application include AAC and G.711, while the video codecs supported include H.264. The application also has an encrypted channel (RTP over HTTPS tunnel) for secure communication.

Overall, VXG RTSP Server is an excellent RTSP server application that offers a complete solution for streaming video and audio to RTSP clients on Android devices. Its key features, including multi-channel support, hardware acceleration, and low latency for network streams, make it a top choice for users looking to stream video and audio over RTSP.