Answer is same, check iptv forums/irc etc. This here is commercial side of IPTV, i.e business, not chasing free stream links, most which are not meant to be streamed constantly anyway and have a time-out token, i.e website expects a user to watch a clip of new or whatever and close the page/stream. Also most websites change their stream url continuously for same reasons you want to catch it.
Answer is same, check iptv forums/irc etc. This here is commercial side of IPTV, i.e business, not chasing free stream links, most which are not meant to be streamed constantly anyway and have a time-out token, i.e website expects a user to watch a clip of new or whatever and close the page/stream. Also most websites change their stream url continuously for same reasons you want to catch it.