FYI, this seems to work in PowerShell:

(new-object Net.WebClient).DownloadFile( 'http://192.168.1.41:5004/tuner3/v20.1?duration=6000', 'NUL:')

No error and no file that I can find.

Appreciate you sharing this and hope you'll keep us updated on your efforts to have a script update the .ts file directly. I've been wanting to do something similar myself but it's definitely not trivial and haven't made the time.

Also worth sharing for anyone wondering how to convert a specific ...