[MEncoder-users] encoding technical question

[Corey Hickey]

A. Schmid wrote:
> Philippe MONROUX wrote:
>> De (from) (von) <bugfood-ml at fatooh.org> :
>>
>>> Philippe MONROUX wrote:
>>>>> 2) Unless I am very much  mistaken, CQ will not give you predictable
>>>>> file sizes, since it will  use whatever bitrate is needed to provide
>>>>> the quality specified., so the  basis of your question is flawed. In
>>>>> my experience, the only way to achieve a fixed final file size is to
>>>>> do two pass encoding specifying bitrate, not CQ or CR.
>>>> Sure but, read in doc :
>>>>
>>>> resolution x CQ = (bitrate x 1000)/25 (if 25 fps)
>>> Where is this written? 
>> Here :
>> http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-dvd-mpeg4.html#menc-feat-dvd-mpeg4-resolution-bitrate-compute
> 
> I think there was some confusion with the CQ, which means "compression 
> quality" in this document. It is stated clearly that "CQ represents the 
> number of bits per pixel and per frame of the encode".
> This means CQ ist in fact an way to talk about constant _bitrate_, not 
> constant quantizer (or "constant quality") - which is also abbreviated 
> "CQ" but means variable bitrate.

Yeah, acronym ambiguity; I thought I had responded last night right
before going to bed, but today I found out that my stupid !#@$&** ISP
had just started blocking TCP traffic to port 25. Sigh...

-Corey