How to get the tapstream URL
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Go to web page that shows video and play it then pause.
Firefox, Tools | Web Developer | Network
Click on All (or XHR) to locate the stream URL
You should see the ts URL, e.g.
http://host.com/.../..._108.ts

Copy this URL and force the last index to be _1.ts

python tapstream.py -o file.mp4 -u http://......_1.ts