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29th September 2020, 20:44 | #1 | Link |
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Join Date: Jan 2015
Posts: 1,080
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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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11th April 2024, 13:37 | #2 | Link |
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Join Date: Sep 2007
Location: Italy
Posts: 33
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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. |
1st May 2024, 05:25 | #3 | Link |
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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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I ask unusual questions but always give proper thanks to those who give correct and useful answers. |
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