[MEncoder-users] Tuning hqdn3d

[Nicolas George]

Le nonidi 29 floréal, an CCXVII, James Hastings-Trew a écrit :
> vmrsss wrote:
>> On 15 May 2009, at 16:15, Phil Ehrens wrote:
>>> Look, people... 2-pass just plain RULEZ when it
>>> comes to quality. If you don't believe it, do the
>>> friggin' experiment for yourself...
>>
>> it's not that I don't believe that 2-pass is better
>> than 1-pass. I don't believe that 2-pass is better
>> than crf if the encodes end up with the same
>> avg bitrate.
> I believe that you are incorrect. What you are saying is that 2-pass can't 
> possibly give you a better quality encode than doing it in one pass with a  
> chosen crf value that you choose.

2-pass for constant-quality could allow encoding improvements, but it is not
implemented.

>				    My experience with doing encodes both 
> ways shows that the 2-pass encode is visually better in quality, and, as a 

As I said, I did a very quick experiment a few days ago, and the result was
rather in the opposite direction.

> bonus, the file is not arbitrarily large.

I think you missed the point where some people (including me) explained that
what they want is a file that is large enough to achieve the visual quality
they want, and no more.

If the file is smaller, then it does not achieve the requested visual
quality: this is not a bonus.

Regards,

-- 
  Nicolas George
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