[PD] pix_freeframe

[David Powers]

Hey,

I've only been doing VJ stuff for this year, and I had no idea about
the technical and memory-size differences between RGB and YUV. so "par
F" - please know that your post was VERY helpful. I use alpha channels
a lot too, and I might try and create a DVD to demo my work, so some
of us really need to know the types of trade offs involved. It is NOT
just academic, it lets me know some things to experiment with and see
what results it gives me and whether it looks satisfactory.

Btw, I'm doing live visuals for a show with UNDERGROUND RESISTANCE
from Detroit - I'm really excited because UR records were my first
influences when I was getting into techno. I'll be using PD and GEM to
full effect. This is my first show in a big club -- well, I hate
clubs, but I'm happy to do a show with Underground Resistance, and
hopefully I can sneak in some revolutionary propaganda into my show...

~David

On 8/30/06, Yves Degoyon <ydegoyon at free.fr> wrote:
> ok, sorry,
>
> that was harsh for your 1st message on the list
> ( but that's a harsh list ),
> it's always full of 'my stuff is better, blah, blah. blah, ...'
>
> YUV is just a compromise between quality
> and real-time processing
> ( that's a concern in pd )
>
> sorry again,
> sevy
>
>
> pär F wrote:
>
> >
> >> 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
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