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Old November 4th, 2006, 07:01 AM   #1
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Halo removal & understanding quantization matrices

annoying thing about mpeg2 sd compression is that pretty much every encoder out there puts halos on your encoded footage when it was not present on the original footage.

I've tracked this down to the quantization matrices that are used. Even an advanced product like cinemacraft says nothing about how to adjust them in the supplied documentation although it has a matrix editor built-in.

so I turn to you good forum folks...

what are the magic numbers to put in the matrices to get halo-free encodings.
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Old November 4th, 2006, 08:56 AM   #2
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That is just an artifact of sharpening. I found it objectionable on the computer, but invisible on T.V. How did you view it?
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Old November 4th, 2006, 09:25 AM   #3
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Quote:
Originally Posted by Emre Safak
That is just an artifact of sharpening. I found it objectionable on the computer, but invisible on T.V. How did you view it?

yes I am aware, but its the values the matrices that cause it...


I see it from pro crt's to crappy low cr lcds
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Old November 4th, 2006, 09:56 AM   #4
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The right place to dig for such information is undoubtedly doom9.org. Here is what I found:
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Old November 5th, 2006, 05:26 AM   #5
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Quote:
Originally Posted by Emre Safak
The right place to dig for such information is undoubtedly doom9.org. Here is what I found:
thanks for diggin' around Emre. it seems not even doom people know what the matrix values should be / or their significance.
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