Thread: 1080i vs. 720p
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Old 06-04-2017, 10:21 AM
Chip Chester Chip Chester is offline
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Join Date: Apr 2012
Posts: 759
All of those display formats are possible in ATSC. And for the tuner to receive 1080i, and moreover say it's 1080i, it has to be an ATSC tuner. 480p confirms it, as NTSC is 480i. (Actually 525i, only 483 of which are visible... but who's counting?) If you're in PAL country, your lineage may be different, but the concept is the same.

But comparison of that show via cable vs. the same show at the same time via antenna will reveal the compression and general monkey business taking place at the cable company front-end that allows enough space on the system to present 82 PPV wrestling and on-demand movie choices and 142 shopping and sports channels in addition to the normal broadcast and cable-box-only offerings. Even though you're not watching them, or ordering them, they still take up room on the cable spectrum that shows up at your house. I call shenanigans. (On BigCable, not you.)

Chip
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