You think TVs a bad...

Date: 2012-01-04 09:35 am (UTC)
From: (Anonymous)
Whilst TVs may be bad, mostly due to consumer price sensitivity I suspect, don't think that the situation is any better in a more controlled space such as cinema.

Whilst there maybe somewhere in the region of 150,000 movie screens worldwide when it comes to digital it is nearer half of that. You would have thought they could have resolved the over scan issues when adapting the intermediate formats used to digitize film, where the % reduction in displayed image (projection safe) vs capture (camera area(s)) is well standardized (SMPTE/ANSI/etc).

When it came to digital projection standards they used the pixel count for the camera area (typically 2048 wide for full aperture) as the projection area meaning you need to up-res similar to what over scanning does.

Ideally they would have used the same proscribed saftey areas and at least allowed one of the origination formats used, to be mapped directly. Instead to achieve this now you have to realign the digitization optics, to sample the 'active' picture at 2048.

(The above discounts the use of over sampled sources (4096 samples) which is typical in high end uses)
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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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