Don't sweat the p. If you want great video on your Sony TV, get a real video camera with a huge amount of storage and high-quality optics -- that is, a lens that doesn't have to be thin as a yak's hair -- and connect that by wire to your Sony TV. If you want easy viewing of home movies shot with your iPhone 4S, get an ATV and don't even think about resolution.
HD resolutions are tantamount to marketing gimmicks. Even 1080p Blu-ray is heavily compressed to disc from the master. In the real world -- Airplay, streaming services like Netflix, iTunes Store content, cable TV services -- you get 720 or 1080 lines of resolution, but the bit rate is low -- it's only a max of 40 mbps in a Blu-ray player.
I recently covered one of these AMC Theatre Uncharted 3 video game previews for a publication for which I write. Admission wasn't limited to press and industry -- they sold tickets to the gaming public. Although avid gamers, these guys and gals weren't accustomed to gaming industry dog-and-pony shows. They were simply stunned, blown away, by how good a 720p -- the game's not even 1080p -- PlayStation 3 game looked on a large movie theater screen. They didn't realize what they were watching was processed by a very, very expensive theater projection system with ultra-high-end upscaling.
Don't sweat resolution numbers. They will mess with your head, just as marketers intend. If it's convenient and looks reasonably good to you, then it's fine. It's never going to look as good as it does played out of flash storage on that tiny little high-res iPhone screen.
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Having now got an iPhone 4S I'm starting to shoot video, but trying to display it on my Sony TV is a pain so I'm thinking of getting a ATV.
However, the current ATV only supports 720p. I'm kind of surprised that Apple didn't launch a new 1080p model alongside the 4S (I guess it needs new h/w not just a s/w u/g).
Has anyone heard any rumours of a new model in the pipeline?