720 is standard high definition Television broadcast these days, sports programs, etc. 1020 X 1920 is very high quality HD for home, though if you have any thought of editing, you will need a high end graphic computer to do it. For shoot and plug into your TV should be fine. Stay away from 4K unless you have 4K TV.
Sorry to say, your info is about 10 years out of date.
It is hard to buy anything but a tiny TV in 720P, and 4K is rapidly becoming mainstream.
That being said, even if you target 1080P TVs for viewing, 4K is still good to use for recording. Then, since you have extra resolution, you can shoot with a wider lens setting, and use that excess resolution as "buffer" that stabilization features in video editing software can use to "soak up" any un-smooth movement when filming.
NBC and CBS use 1080x1920 but I agree 4k is overkill, especially since it looks like he has a $60 budget and he’d need a hundred dollar memory card to be big and fast enough to be useful for 4k.
Funny thing, you can do some basic video editing on 1080p video on a $200 phone.
Thanks. That is the type of advice I was looking for. This PC has a 4-core 4.2ghz cpu with 16 ram, but cheap video card.
You are in some type of time-warp, full reverse thrusters required.
Wow.