Sniffer rtmp link in a web or a player

I want to sniffer the sport live rtmp link in https://1xbet.com. I want to record and restream the rtmp link. You can easily register a account at 1xbet and press live button to see the live sports streaming. You have to handle a execute program can extract rtmp link from current playing stream. Please provide your experience handle rtmp protocol and the schedule and price.