Quote:
Originally Posted by koan00
I think it comes from upscaling and cropping 4:3 content. I see the same behaviour on the show "Destroyed in seconds" on Discovery.
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This sounds like a plausible explanation. Maybe the programs were originally stored in 640x480 SD and were upscaled 3x to 1920x1440 and then cropped? If true then for some reason the cropping is not done to scale in vertical and horizontal pixels - more pixels (in proportional terms) are cropped in horizontal lines (from 1440 to 1080 lines) than in vertical columns (from 1920 to whatever), thus giving a frame aspect ratio somewhere between 4:3 and 16:9.
I'm also seeing the same thing in some shows on Animal Planet HD like The Most Extreme series and Pet Star.