[Mp4-tech] mismatch control in 1st method(MPEG) quantisation

[Woo John]

Mismatch control is enabled in MPEG quantisation for
both Intra and Inter blocks(Please refer ISO/IEC
14496-2 subclass 7.4.4.5 and ms/momusys reference
code).
My questions:
1. In some implementations such as xvid and skal,
mismatch control is only enabled in inter blocks(MPEG
quant method) while not implemented in intra blocks.
Why?
2. Why there is a mismatch control in quantisation?
Thank you!
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Zilong Wu
bobocreative yahoo.com.cn
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