<s>
Lightspark	B-Language
is	O
a	O
free	B-License
and	I-License
open-source	I-License
SWF	O
player	O
released	O
under	O
the	O
terms	O
of	O
the	O
GNU	B-Application
Lesser	I-Application
General	I-Application
Public	I-Application
License	I-Application
(	O
LGPL	B-Application
)	O
version	O
3	O
.	O
</s>
<s>
Lightspark	B-Language
supports	O
most	O
of	O
ActionScript	B-Operating_System
3.0	O
and	O
has	O
an	O
NPAPI	B-Protocol
plug-in	B-Application
.	O
</s>
<s>
It	O
will	O
fall	O
back	O
on	O
Gnash	B-Language
,	O
a	O
free	O
SWF	O
player	O
on	O
ActionScript	B-Operating_System
1.0	O
and	O
2.0	O
(	O
AVM1	O
)	O
code	O
.	O
</s>
<s>
Lightspark	B-Language
supports	O
OpenGL-based	O
rendering	O
and	O
LLVM-based	O
ActionScript	B-Operating_System
execution	O
and	O
uses	O
OpenGL	B-Application
shaders	O
(	O
GLSL	B-Language
)	O
.	O
</s>
<s>
The	O
player	O
is	O
compatible	O
with	O
H.264	B-Application
Flash	B-Operating_System
videos	I-Operating_System
on	O
YouTube	B-General_Concept
.	I-General_Concept
</s>
<s>
The	O
Lightspark	B-Language
player	O
is	O
completely	O
portable	O
.	O
</s>
<s>
It	O
has	O
been	O
successfully	O
built	O
on	O
Ubuntu	B-Operating_System
11.04	O
(	O
Natty	O
Narwhal	O
)	O
on	O
PowerPC	B-Architecture
,	O
x86	B-Operating_System
,	O
ARM	B-Architecture
and	O
AMD64	B-Device
architectures	O
.	O
</s>
<s>
Lightspark	B-Language
has	O
a	O
Win32	B-Library
branch	O
for	O
Microsoft	B-Application
Visual	I-Application
Studio	I-Application
and	O
introduced	O
a	O
Mozilla-compatible	O
plug-in	B-Application
for	O
Windows	B-Application
in	O
version	O
0.5.3	O
.	O
</s>
<s>
Since	O
then	O
,	O
the	O
project	O
has	O
n't	O
seen	O
any	O
official	O
Windows	B-Application
release	O
,	O
but	O
newer	O
versions	O
are	O
continuously	O
built	O
and	O
made	O
available	O
through	O
Jenkins	B-Language
.	O
</s>
