1080i broadcast kneecapping

Date: 2012-01-04 03:59 am (UTC)
From: (Anonymous)
Also note that 1080i broadcasts are almost never in the full 1920x1080i resolution. ATSC & BBC 1080i broadcasts are 1440x1080i (stretched by receiver to 1920x1080), while satellite services crunch that even further to 1280x1080 for maximum compression efficiency. Cable co's processing standards vary. There are so many levels of up & downsampling that a 1:1 pixel mapping mode on a TV is nearly pointless save Blu-ray or computer sources.
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Matthew Garrett

About Matthew

Power management, mobile and firmware developer on Linux. Security developer at Google. Ex-biologist. @mjg59 on Twitter. Content here should not be interpreted as the opinion of my employer.

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