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The "2147" element suggests dynamic scaling. On a 6-inch phone screen, 4K is overkill. On a 13-inch tablet, 1080p looks stunning. This format uses variable bitrate encoding (VBR) that allocates more data to complex action scenes and less to static dialogue shots. The result? A 2-hour movie that takes up only 1.5GB but looks better than a 4GB standard rip.
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