How is a 1280×544 film considered to be 720p?

Posted on July 17, 2008. Filed under: Explanations |

Horizontally, the picture is 1280 pixels, and this is the requirement of 720p. The “720p” tag is used for all frames of that size, whether they are 1280×720 or 1280×544, or any other height. Releases with these different dimensions have different aspect ratios or “degrees of widescreen”.

In the scene, instead of releasing them with black bars hardcoded into the video above and below the picture (known as matte), the releasers remove the ‘dead’ space for us. This results in a shorter image, and thus no wasted space, bandwidth or processing power. Also, for very wide screens, and fullscreen (non-widescreen) films, a matte might cause the picture to not even stretch the full width of the screen.

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4 Responses to “How is a 1280×544 film considered to be 720p?”

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1280×720 is not fullscreen. fullscreen has an aspect ratio of 4:3. both 1280×720 (1.778:1) and 1280×544 (2.35:1) are widescreen.

Its full cinematic aspect ratio. When you buy a DVD, often it is in this aspect ratio known as Cinematic (2.35:1). However, normal television and normal tvs are made at an aspect ratio of (16:9) High Definition, so you receive the black bars.

If you go to the movies and watch the previews, you will notice that the curtains will widen slightly before the movie actually starts.

That’s fucking stupid. if it does by the 1280 call it 1280p. if you call it 720p then what needs to change for the wider aspect ratios is the 1280 not the 720

No, it’s logical. The resolution is fixed both ways if you include the black bars. The P stands for progressive and this refers to how the lines are drawn, hence the choice for the vertical resolution.

https://en.wikipedia.org/wiki/Progressive_scan

“The number 720 stands for the 720 horizontal scan lines of image display resolution (also known as 720 pixels of vertical resolution), while the letter p stands for progressive scan (i.e. non-interlaced).”

https://en.wikipedia.org/wiki/720p


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