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Old 29th September 2020, 20:44   #1  |  Link
Katie Boundary
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Maximum and minimum quantizers don't always work

I recently attempted an XviD encode in which I-frames were locked to both a maximum and minimum quantizer of 2, and P-frames were locked to 4.

The encoder accepted only some of my suggestions.

Is this a known bug? Is there a plan to fix it?
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Old 11th April 2024, 13:37   #2  |  Link
blob2500
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If Adaptive Quantization/VAQ is activated, q-max goes slightly outside the set range (example: 3 -> 5; 5 -> 7). I think it's normal.

Xvid window status has an issue(?) and behaves as if VAQ is not activated and reports max values exactly as set.

In all cases, q-min/max values for I-frames can only be set for 2-pass encoding.
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Old 1st May 2024, 05:25   #3  |  Link
Katie Boundary
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Quote:
Originally Posted by blob2500 View Post
If Adaptive Quantization/VAQ is activated
I don't use adaptive quantization. I got tired of always having to look up whether lumi masking or variance masking was the "correct" one to use.
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