And you have to get into the cable network these days. Who still uses terrestrial TV?
Broadcasting DVB-T is pretty trivial and people have even done it with a raspberry pi and a piece of wire (in an awful distortion-creating way) but getting people to tune to it will be harder. Also the power amplifier bit would be tougher but doable.
In fact since the days of SDR you can broadcast almost anything. You can run your own 4G mobile base station with one of those.
At some point in the chain it's probably still analog, but the question is where's the switch? I think the compression scheme is very dependent on comparing adjacent frames, so you couldn't have compression until the point where all inputs come together.
Broadcasting DVB-T is pretty trivial and people have even done it with a raspberry pi and a piece of wire (in an awful distortion-creating way) but getting people to tune to it will be harder. Also the power amplifier bit would be tougher but doable.
In fact since the days of SDR you can broadcast almost anything. You can run your own 4G mobile base station with one of those.