<s>
frei0r	B-Language
is	O
a	O
simple	O
cross-platform	B-Operating_System
framework	B-Architecture
for	O
video	O
effects	O
.	O
</s>
<s>
It	O
provides	O
filters	O
,	O
mixers	O
and	O
generators	O
by	O
means	O
of	O
minimalistic	O
plugin	B-Application
API	B-Application
.	O
</s>
<s>
Frei0r	B-Language
is	O
not	O
meant	O
as	O
a	O
generic	O
API	B-Application
for	O
all	O
kinds	O
of	O
video	O
applications	O
.	O
</s>
<s>
What	O
frei0r	B-Language
does	O
provide	O
,	O
besides	O
a	O
collection	O
of	O
usable	O
video	O
plugins	B-Application
,	O
are	O
C	B-Language
and	O
C++	B-Language
code	I-Language
reference	O
implementations	O
for	O
over	O
100	O
different	O
video	O
manipulation	O
algorithms	O
,	O
licensed	O
under	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
.	O
</s>
<s>
The	O
frei0r	B-Language
API	B-Application
is	O
not	O
meant	O
to	O
be	O
a	O
competing	O
standard	O
to	O
more	O
ambitious	O
efforts	O
.	O
</s>
<s>
The	O
current	O
implementation	O
of	O
frei0r	B-Language
is	O
very	O
lightweight	O
,	O
consisting	O
of	O
just	O
a	O
single	O
C/C	O
++	O
header	B-Language
file	I-Language
.	O
</s>
<s>
Since	O
its	O
birth	O
in	O
2004	O
frei0r	B-Language
became	O
a	O
de	O
facto	O
standard	O
video	O
plugin	B-Application
collection	O
for	O
several	O
free	O
and	O
open	O
source	O
applications	O
,	O
as	O
LADSPA	B-Language
did	O
for	O
audio	O
plugins	B-Application
.	O
</s>
<s>
Frei0r	B-Language
is	O
the	O
result	O
of	O
a	O
collective	O
effort	O
in	O
coordination	O
between	O
several	O
software	O
developers	O
meeting	O
in	O
the	O
premises	O
of	O
the	O
Bergen	O
Center	O
for	O
Electronic	O
Arts	O
in	O
a	O
festival	O
called	O
Piksel	O
.	O
</s>
<s>
Between	O
2003	O
and	O
2005	O
an	O
attempt	O
was	O
made	O
to	O
find	O
a	O
common	O
standard	O
for	O
video	O
effect	O
plugins	B-Application
to	O
be	O
used	O
among	O
various	O
applications	O
:	O
Andraz	O
Tori	O
(	O
Cinelerra	B-Language
community	O
version	O
)	O
,	O
Daniel	O
Fischer	O
(	O
Pakt/GStreamer	O
)	O
,	O
Denis	O
Jaromil	O
Rojo	O
(	O
FreeJ/Dyne	O
)	O
,	O
Gabriel	O
"	O
Salsaman	O
"	O
Finch	O
(	O
LiVES	O
)	O
,	O
Kentaro	O
Fukuchi	O
(	O
EffecTV	O
)	O
,	O
Niels	O
Elburg	O
(	O
VeeJay	O
)	O
,	O
Øyvind	O
Kolås	O
(	O
GEGL/babl/GIMP	O
)	O
,	O
Tom	O
Schouten	O
(	O
PDP/PureData	O
)	O
,	O
Artem	O
Baguinski	O
(	O
V2_Lab	O
)	O
,	O
Georg	O
Seidel	O
,	O
Martin	O
Bayer	O
and	O
Phillip	O
Promesberger	O
(	O
Gephex	O
)	O
all	O
took	O
part	O
in	O
the	O
discussions	O
.	O
</s>
<s>
The	O
group	O
first	O
aimed	O
at	O
the	O
realization	O
of	O
a	O
comprehensive	O
specification	O
for	O
dynamically	O
loaded	O
plugins	B-Application
named	O
LiViDO	O
(	O
Linux	O
Video	O
Dynamic	O
Objects	O
)	O
which	O
then	O
spawned	O
two	O
implementations	O
:	O
one	O
being	O
the	O
minimalistic	O
frei0r	B-Language
presented	O
by	O
the	O
Gephex	O
team	O
as	O
a	O
humorous	O
parody	O
of	O
LiViDO	O
,	O
and	O
the	O
other	O
one	O
being	O
WEED	O
which	O
offered	O
more	O
features	O
for	O
GUI	B-Application
integration	O
and	O
parameter	O
handling	O
.	O
</s>
<s>
Within	O
the	O
span	O
of	O
a	O
few	O
years	O
,	O
the	O
minimalistic	O
approach	O
of	O
frei0r	B-Language
has	O
been	O
widely	O
adopted	O
amongst	O
many	O
applications	O
and	O
become	O
a	O
de	O
facto	O
standard	O
.	O
</s>
<s>
Maintenance	O
and	O
further	O
refinements	O
were	O
contributed	O
by	O
Carlo	O
Prelz	O
(	O
MøB/BEK	O
)	O
,	O
Richard	O
Spindler	O
(	O
Open	O
Movie	O
Editor	O
)	O
,	O
Jean-Sébastien	O
Senécal	O
(	O
DRONE	O
)	O
and	O
Dan	O
Dennedy	O
(	O
MLT/Kdenlive	O
)	O
.	O
</s>
<s>
Frei0r	B-Language
plugins	B-Application
are	O
fully	O
cross-platform	B-Operating_System
,	O
they	O
are	O
found	O
in	O
several	O
Linux	O
and	O
BSD	O
distributions	O
,	O
available	O
for	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
as	O
part	O
of	O
the	O
Fink	B-Application
and	O
MacPorts	B-Application
projects	O
and	O
easily	O
compiled	O
on	O
Windows	O
platforms	O
using	O
Cmake	B-Language
and	O
Cygwin	B-Language
.	O
</s>
