[MEncoder-users] Custom quantizer matrix

[Tobias Brockamp]

Am 09.10.2007, 17:08 Uhr, schrieb Giacomo Comes <comes at naic.edu>:

> On Tue, Oct 09, 2007 at 03:33:13PM +0200, Tobias Brockamp wrote:
>> Doesn't anybody have such custom matrix in use? I only need one for
>> editing, because
>> i haven't found any documentation how such a matrix look like so  
>> mencoder
>> can use it.
>>
>> In the mencoder man-page it says that xvid4conf does produce the matrix
>> but i can't find
>> a windows binary.
>>
>> please, i strongly need this feature.
>
> Are you asking about how to use custom quantization matrix with mencoder?
> With libavcodec it is really easy:
> -lavcopts inter_matrix=a,b,c....:intra_matrix=d,e,f.....
> with xvid:
> -xvidencopts  
> quant_type=mpeg:quant_inter_matrix=file1:quant_intra_matrix=file2
> the content of file1/2 looks like (8x8 coefficents):
>  16 18 20 22 24 26 28 30
>  18 20 22 24 26 28 30 32
>  20 22 24 26 28 30 32 34
>  22 24 26 30 32 32 34 36
>  24 26 28 32 34 34 36 38
>  26 28 30 32 34 36 38 40
>  28 30 32 34 36 38 42 42
>  30 32 34 36 38 40 42 44
> The values of the coefficent for various metrixes can be easily found  
> with
> google.

thank you that was exactly what i was searching for. wouldn't it be a  
great idea
to add a this to the mencoder documentation?

>
> Ciao
> Giacomo
>
>>
>> Am 08.10.2007, 23:06 Uhr, schrieb Tobias Brockamp  
>> <tobiasbrockamp at gmx.de>:
>>
>> > Hi,
>> >
>> > can anybody tell me where i found custom quantizer matrix like  
>> sixofnine
>> > or eqm v3lr in mencoder
>> > readable format?
>> > Or has anybody a windows binary for the xvid4conf tool, so i can build
>> > them for myself?
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