Increasingly TV channels supplement their on-air broadcasts with publicly-accessible IPTV-service "broadcasting" the same content via Internet. For example, the impoverished (and war-torn) Ukraine has about 120 such channels with IPTV streams accessible to the anonymous public.
The viewing experience, however, is often subpar -- because of the Internet latency and other connectivity problems. So one could offer a useful service by continuously recording such broadcasts (keeping, say 1-2 weeks worth) and allowing people to access the (unaltered) recordings from his servers, which could be located closer to the particular viewer and have better bandwidth.
Would such a thing be legal, or will one need to obtain and maintain tedious prior approvals from each channel?
Note, I'm not talking about "premium" channels -- which wish to be paid for content and aren't available as IPTV (without encryption) anyway. Only the ones, that are already available for free to anyone, who lives close enough for their signal to arrive on his antenna, or has a decent Internet link to their server.
Note also, that I'd be perfectly willing to stop recording and "rebroadcasting" a channel, that decides to ask me to stop going forward. But I'm worried about suddenly becoming liable for retroactive damages...