Download rstp stream to android

Question

I am developing an android application for streaming and downloading video from an IP camera via rtsp link. I can show rtsp video through VideoView in Android. But I also want to download this video. Unfortunately, android does not support the rtsp url to open UrlConnection.

For this, I searched and found netty to load rtsp streams, but I'm new to this, and I don't know how to use it to load rtsp streams.

Is there any other way to download rtsp links in android or in case of netty how to use it to download rtsp streams?

Code fragments will be helpful.

Thanks in advance.