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8K IPTV journal — page 70

Practical answers for players, subscriptions, network connections, picture, sound and everyday viewing.

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Six guides to explore.

Illustrated guide: HDR metadata and on-screen badges: useful clues with limits

HDR metadata and on-screen badges: useful clues with limits

An HDR badge usually indicates that the app or display has recognised an HDR-related format or mode. It does not independently prove the source’s mastering quality, native resolution or visible performance. Metadata helps the playback chain interpret content, but the complete result still depends on the display.

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Illustrated guide: Why films have black bars on a widescreen TV

Why films have black bars on a widescreen TV

Usually not. A film wider than a 16:9 television needs letterboxing to preserve its full shape. The bars allow the entire image to fit without stretching or cropping. Removing them with zoom often discards picture information from the left and right sides.

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Illustrated guide: Why stretch mode makes faces look wrong

Why stretch mode makes faces look wrong

The player or television may be stretching a picture to fill a differently shaped screen. Stretching changes proportions, while zooming enlarges and crops. Restore an original, normal or aspect-preserving fit mode before judging whether the source itself has incorrect geometry.

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Illustrated guide: Anamorphic video: when stored pixels are not square

Anamorphic video: when stored pixels are not square

Some formats store a picture with non-square pixels or an intended display aspect ratio. A player uses that information to present the correct shape. Stored width and height alone may therefore look unusual without indicating that the programme should be displayed squeezed or stretched.

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