tl;dr Blu-Ray > DVD (imgur/a/qfTi6) Something that rustles my jimmies is when people proclaim that Blu-Ray looks no different to DVD. Here I’m going to prove practically and theoretically why such a statement is completely moronic. We’ll start off with the theoretical. A DVD’s maximum native resolution is 720x480, a Blu-Ray’s resolution is 1920x1080, commonly referred to as 1080p. In laymen’s terms, this means that a Blu-Ray’s picture is natively bigger than DVD. More technically, it means that there are more dots per inch (DPI). Blu-Ray is able to produce a higher DPI than DVD thus providing a far sharper image. It is of course possible to stretch either format, but that would only serve to decrease the quality of the image. The majority of televisions and computer monitors today are not even capable of displaying images that are lower than 800x600 without stretching them. This should show how laughably outdated the DVD format is. The standard resolution for most screens today is 1080p (though this is likely to change soon), therefore it seems logical to play 1080p capable movies on those screens. Almost all movies are shot in 1080p, though some have been shot in higher aspect ratios, such as ‘The Hobbit: Desolation of Smaug’, which was shot in 4k, the highest current resolution. This fact means that a movie must be compressed to fit on a DVD. The average Blu-Ray comes in at about 20-50 gigabytes in size (The Avengers is 39gb). A DVD is a measly 8 gigabytes (The Avengers is 7gb). Fitting such a large movie into such a small file size means a definite loss of quality. Regardless of your ability to differentiate between Blu-Ray and DVD, proclaiming that they are in any way the same image quality is completely and utterly ridiculous. The pictures I have provided are direct screenshots from my DVD and Blu-Ray copies of Marvel’s ‘The Avengers’. Facebook will most likely compress the images so I have provided a link to the full sized images at the top of the post.
Posted on: Tue, 18 Mar 2014 16:50:37 +0000
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