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Have I got this right?


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#1 John Sprung

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Posted 22 December 2008 - 09:06 PM

I've been doing some math and stuff regarding compression techniques. Redcode 36 as I understand it gives us about 288 Mega-bits per second, and using "4K-HD" 3840 x 2160, 12 bits deep, the compression ratio would be about 8.3:1.

Also, this wavelet compression they use is strictly intra-frame, right?

Does that sound about right, or do I need to look for where I screwed up?

Thanks --





-- J.S.
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#2 DJ Joofa

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Posted 23 December 2008 - 03:13 AM

I've been doing some math and stuff regarding compression techniques. Redcode 36 as I understand it gives us about 288 Mega-bits per second, and using "4K-HD" 3840 x 2160, 12 bits deep, the compression ratio would be about 8.3:1.


Hi John, that seems right.

Also, this wavelet compression they use is strictly intra-frame, right?


I think Red flavor of wavelets is intra-frame only.
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#3 John Sprung

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Posted 23 December 2008 - 01:27 PM

Thanks, DJ. What I'm looking at is shooting Redcode 36/4K-HD, and posting in Avid's DNxHD-175x, all 24p of course. They seem like a pretty good fit. The Avid compression is about 5.7:1, and uses a sort of motion-JPEG-ish DCT scheme.





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