[PD] pix_freeframe

[pär F]

> ola,
>
>>
>>
>>
>> 4-2-2 or 4-1-1 reduces space in a great way, but if you need to  
>> make  manipulations that moves information from color to luminance  
>> the  method might be a rather bad idéa. Worse even, if you need to  
>> use  color-information for creating an alpha-channel (blue-screen/ 
>> green- screen f.ex.) you might experience serious loss of quality.
>>
>>
>
> sick of quality maniacs and of professors,
> hey man, we knew what you taught us.

I'm new to this community but I'm sure most of you did know this,  
though I'm not really sure everyone involved did, and thought some  
clarification might bring the discussion up to a more constructive  
level. Sorry if I insulted you in some way by doing this. I'm  
seriously not a quality maniac but there are always decisions to make  
or ignore and as you so wisely remarked earlier: "it all depends on  
the patch". In some cases it's just good to have the information.

> ask yourself why many people work in YUV
> ( and i'm not defending it, i don't care )

I think I did rather well explain why people use YUV and 4-2-2 don't  
you think? I don't want to take sides in this discussion, as the  
truth is in "it all depends". Though I would agree (of course), in  
most cases 4-2-2 or 4-2-0 is far more than good enough.

In the end just use what works, simple as that. OK?

.p