And so out of a compromise, the 16:9 aspect ratio was born – the default widescreen aspect ratio for all video products from DVD’s to UltraHD “4K” formats. This means that an image of either aspect ratio would have relatively the same screen area when properly formatted in 16:9 standard with with letterboxes. 16:9 was the geometric mean between 4:3 and the 2.39, the two most common extremes in terms of aspect ratio. Powers, a SMPTE engineer suggested this new aspect ratio as a compromise. In the late 1980s, when the plans for the HDTV standard were born, Kerns H. Well, for that answer we need to turn back to Film’s little brother television. Let’s just to summarize why the 16:9 aspect ratio was born. If you have missed the article about the 16:9 aspect ratio you can read it over here. Are you curious how to add top and bottom bars (letterboxes) in Premiere Pro? Well, before showing you the answer I recommend you why are letter boxes used.
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