<s>
sView	B-Language
is	O
a	O
free	B-License
and	I-License
open-source	I-License
3D	O
media	O
player	O
software	O
application	O
.	O
</s>
<s>
It	O
is	O
available	O
for	O
Linux	B-Application
,	O
OS	B-Operating_System
X	I-Operating_System
,	O
Microsoft	B-Application
Windows	I-Application
and	O
Android	B-Application
.	O
</s>
<s>
sView	B-Language
is	O
a	O
general-purpose	O
media	O
player	O
focused	O
on	O
supporting	O
various	O
3D	O
displays	O
.	O
</s>
<s>
Development	O
of	O
sView	B-Language
began	O
in	O
2007	O
,	O
first	O
as	O
a	O
proof-of-concept	O
stereoscopic	O
image	B-Application
viewer	I-Application
implementing	O
a	O
software	O
emulated	O
Quadbuffered	O
pageflip	O
rendering	O
method	O
for	O
active	O
shutter-glasses	O
devices	O
(	O
as	O
an	O
alternative	O
to	O
hardware	O
pageflip	O
having	O
very	O
limited	O
support	O
by	O
consumer-level	O
graphic	O
cards	O
at	O
that	O
time	O
)	O
.	O
</s>
<s>
In	O
'	O
2008	O
sView	B-Language
has	O
received	O
graphical	O
user	O
interface	O
based	O
on	O
WinAPI	O
,	O
support	O
of	O
Anaglyph	O
,	O
iZ3D	O
,	O
Dual	O
Output	O
,	O
Mirror	O
.	O
</s>
<s>
This	O
version	O
has	O
been	O
suggested	O
by	O
iZ3D	O
as	O
a	O
freeware	O
image	B-Application
viewer	I-Application
to	O
users	O
of	O
their	O
stereoscopic	O
monitors	O
.	O
</s>
<s>
In	O
'	O
2009	O
sView	B-Language
has	O
been	O
rewritten	O
from	O
scratch	O
to	O
support	O
video	O
playback	O
,	O
OpenGL-based	O
onscreen	O
user	O
interface	O
,	O
cross-platform	O
support	O
,	O
equirectangular	O
stereoscopic	O
panoramas	B-Application
,	O
and	O
native	O
Internet	O
Browser	O
plugin	O
for	O
displaying	O
stereoscopic	O
images	O
embedded	O
into	O
web-pages	O
.	O
</s>
<s>
First	O
release	O
for	O
Android	B-Application
platform	I-Application
become	O
available	O
in	O
'	O
2014	O
.	O
</s>
<s>
In	O
'	O
2017	O
has	O
been	O
added	O
OpenVR	B-General_Concept
(	O
HTC	O
Vive	O
)	O
support	O
.	O
</s>
<s>
sView	B-Language
relies	O
on	O
FFmpeg	B-Library
decoders	O
,	O
which	O
allow	O
opening	O
a	O
wide	O
variety	O
of	O
media	O
formats	O
-	O
from	O
still	O
images	O
to	O
videos	O
and	O
music	O
.	O
</s>
<s>
Audio	O
playback	O
relies	O
on	O
OpenAL	B-Application
Soft	I-Application
.	O
</s>
<s>
sView	B-Language
displays	O
image-based	O
and	O
text-based	O
subtitles	O
,	O
provides	O
audio/subtitle	O
stream	O
selection	O
(	O
audio	O
steam	O
auto-selection	O
is	O
based	O
on	O
user	O
interface	O
language	O
)	O
,	O
attachment	O
of	O
external	O
audio/subtitle	O
files	O
,	O
has	O
audio/video	O
delay	O
setup	O
,	O
provides	O
simple	O
color	O
adjustment	O
filters	O
and	O
allows	O
configuring	O
hotkeys	O
.	O
</s>
<s>
sView	B-Language
has	O
a	O
minimal	O
set	O
of	O
playlist	O
capabilities	O
,	O
with	O
list	O
filled	O
in	O
from	O
a	O
folder	O
content	O
(	O
there	O
is	O
no	O
media	O
library	O
support	O
)	O
.	O
</s>
<s>
sView	B-Language
supports	O
various	O
input	O
stereoscopic	O
formats	O
:	O
</s>
<s>
sView	B-Language
allows	O
adjusting	O
stereoscopic	O
pair	O
in	O
horizontal	O
,	O
vertical	O
and	O
angular	O
dimensions	O
for	O
compensation	O
of	O
camera	O
recording	O
defects	O
.	O
</s>
<s>
sView	B-Language
can	O
be	O
used	O
for	O
displaying	O
panoramic	B-Application
still	O
images	O
and	O
videos	O
:	O
</s>
<s>
SteamVR-compatible	O
headsets	O
;	O
</s>
<s>
Application	O
has	O
two	O
independent	O
"	O
faces	O
"	O
sharing	O
a	O
common	O
feature	O
set	O
-	O
as	O
an	O
image	B-Application
viewer	I-Application
and	O
as	O
a	O
video	O
player	O
.	O
</s>
<s>
The	O
user	O
interface	O
is	O
based	O
on	O
its	O
own	O
GUI	O
library	O
StGLWidgets	O
,	O
rendered	O
on	O
top	O
of	O
image/video	O
using	O
OpenGL	B-Application
.	O
</s>
