Home > Archive > Compression > October 2006 > Re: 2-hour length, 148.50 Mhz, 1920 x 1080 progressive scan image, 1-bit object data,
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Re: 2-hour length, 148.50 Mhz, 1920 x 1080 progressive scan image, 1-bit object data,
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| Bob Myers 2006-10-31, 6:55 pm |
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"Martin Heffels" <is.itme@oris.ityou.info> wrote in message
news:c6rdk2t8gu4mkgffc7m7avv7qpb7h4fbdf@
4ax.com...
> I see. So what you mean is that of all the original bits, on average, one
> is left, after all the compression is done? Interesting.
No, let's try this another way.
Let's say you have an original video stream that consists
of - gee, I don't know - let's say 1920 x 1080 pixel
frames that come at you at a rate of 30 per second.
That would be 1920 x 1080 x 30 pixels per second, right?
Working out the above, we could say it's 62.2 million pixels
per second.
Now let's say that we compress this into a data stream which
has an average rate of - again, just to pick a number completely
at random - 19.39 Mbits/second.
On average, how many bits per pixel of the original
video stream does that compressed stream give you?
Bob M.
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