How can I record streaming video on my Mac?
I recommend Movavi Screen Recorder. It is a reliable video ripper that will easily copy web video to your Mac. Just download the program and follow the simple instructions https://www.movavi.com/support/how-to/mac/how-to-capture-streaming-video-on-mac.html
Hope it will be helpful
I am not aware of any free service but StreamingVideoProvider enables you to stream live video from multiple sources such as: 1) Webcam 2) RTSP IP Cam 3)RTMP Encoder 4) Linear TV Playlist 5) EzeCaster Mobile iOS App 6) EzeCaster Pro AND record it at the same time in the cloud from where you can publish it on your site.