Probe before trusting anything here. A stream being listed publicly says nothing about whether it is live, sends CORS (without it the browser cannot play it), or is licensed for redistribution. Confirm rights per channel before this goes near customers.
The probe runs from the server, in Germany. A Saudi channel geo-locked to the Kingdom can fail the probe and still play perfectly in the car — so tap it before deleting it. The reverse also holds: probing fine there is no promise it plays here.