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Impossible to say without knowing the aspect ratio, colour depth and frame rate. You also have to factor in the audio interleave, if any.

As an example, an uncompressed hi-definition video with an aspect ratio of 1920 x 1080, 24 bits per pixel occupies 49,766,400 bits per frame. At 24 frames per second, that's 71,663,616,000 bits per minute. If the audio is uncompressed stereo with a sample rate of 41.1 KHz and 16 bits per channel, that will consume 1,315,200 bits per second which is 78,912,000 bits per minute. So 1 minute of uncompressed audio and video will consume a total 71,742,528,000 bits which is 8,967,816,000 bytes, approximately 8,552.37 megabytes (8.35 gigabytes).

MPEG compression makes the calculation much more difficult because MPEG uses variable rate compression. Thus the storage requirement will vary from one minute to the next.

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