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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| Ken Maltby 2006-10-31, 9:55 pm |
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"Bob Myers" <nospamplease@address.invalid> wrote in message
news:oUQ1h.1823$2Z.589@news.cpqcorp.net...
>
> "Martin Heffels" <is.itme@oris.ityou.info> wrote in message
> news:c6rdk2t8gu4mkgffc7m7avv7qpb7h4fbdf@
4ax.com...
>
> 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.
>
Woah - How many bpp? Is it "1bpp" monochrome? Is it
2bpp CGA? 4bpp EGA? 8bpp VGA? 16bpp XGA,High Color?
24bpp True Color? How about the 32 bit I use for my desktop?
I guess you want to use the monochrome 1 bit per pixel, right?
That would be for both the original and the compressed, right?
> On average, how many bits per pixel of the original
> video stream does that compressed stream give you?
>
> Bob M.
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