<s>
MPlayer	O
is	O
a	O
free	B-License
and	I-License
open-source	I-License
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
and	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
Versions	O
for	O
OS/2	B-Application
,	O
Syllable	B-Application
,	O
AmigaOS	B-Application
,	O
MorphOS	B-Operating_System
and	O
AROS	B-Application
Research	I-Application
Operating	I-Application
System	I-Application
are	O
also	O
available	O
.	O
</s>
<s>
A	O
port	O
for	O
DOS	B-Device
using	O
DJGPP	B-Application
is	O
also	O
available	O
.	O
</s>
<s>
Versions	O
for	O
the	B-Operating_System
Wii	I-Operating_System
Homebrew	O
Channel	O
and	O
Amazon	O
Kindle	O
have	O
also	O
been	O
developed	O
.	O
</s>
<s>
The	O
original	O
author	O
,	O
Hungarian	O
Árpád	O
Gereöffy	O
,	O
started	O
the	O
project	O
because	O
he	O
was	O
unable	O
to	O
find	O
any	O
satisfactory	O
video	O
players	O
for	O
Linux	B-Application
after	O
XAnim	O
stopped	O
development	O
in	O
1999	O
.	O
</s>
<s>
After	O
mpg12play	O
v0.95pre5	O
,	O
the	O
code	O
was	O
merged	O
with	O
an	O
AVI	O
player	O
based	O
on	O
avifiles	O
Win32	B-Library
DLL	O
loader	O
to	O
form	O
MPlayer	O
v0.3	O
in	O
November	O
2000	O
.	O
</s>
<s>
MPlayer	O
was	O
previously	O
called	O
"	O
MPlayer	O
-	O
The	O
Movie	O
Player	O
for	O
Linux	B-Application
"	O
by	O
its	O
developers	O
but	O
this	O
was	O
later	O
shortened	O
to	O
"	O
MPlayer	O
-	O
The	O
Movie	O
Player	O
"	O
after	O
it	O
became	O
commonly	O
used	O
on	O
other	O
operating	O
systems	O
.	O
</s>
<s>
There	O
are	O
various	O
SIP	B-Architecture
blocks	I-Architecture
that	O
can	O
accelerate	O
video	O
decoding	O
computation	O
in	O
several	O
formats	O
,	O
including	O
PureVideo	O
,	O
UVD	O
,	O
QuickSync	B-Algorithm
Video	I-Algorithm
,	O
TI	O
Ducati	O
and	O
others	O
.	O
</s>
<s>
MPlayer	O
can	O
play	O
a	O
wide	O
variety	O
of	O
media	O
formats	O
,	O
namely	O
any	O
format	O
supported	O
by	O
FFmpeg	B-Library
libraries	O
,	O
and	O
can	O
also	O
save	O
all	O
streamed	O
content	O
to	O
a	O
file	O
locally	O
.	O
</s>
<s>
A	O
companion	O
program	O
,	O
called	O
MEncoder	B-Language
,	O
can	O
take	O
an	O
input	O
stream	O
,	O
file	O
or	O
a	O
sequence	O
of	O
picture	O
files	O
,	O
and	O
transcode	B-Algorithm
it	O
into	O
several	O
different	O
output	O
formats	O
,	O
optionally	O
applying	O
various	O
transforms	O
along	O
the	O
way	O
.	O
</s>
<s>
A	O
variety	O
of	O
command-line	B-Application
parameters	O
allows	O
changing	O
the	O
appearance	O
of	O
the	O
player	O
,	O
including	O
-speed	O
[number],	O
-af	O
scaletempo	O
for	O
changing	O
audio	O
speed	O
while	O
maintaining	O
the	O
pitch	O
,	O
-ss	O
(	O
start	O
at	O
___	O
seconds	O
)	O
,	O
-sb	O
(	O
start	O
at	O
___	O
bytes	O
)	O
,	O
-endpos	O
(	O
stop	O
playing	O
at	O
___	O
seconds	O
)	O
,	O
-novideo	O
for	O
only	O
playing	O
the	O
audio	O
track	O
of	O
a	O
video	O
,	O
and	O
-loop	O
 [ number ] 	O
for	O
looping	O
.	O
</s>
<s>
MPlayer	O
can	O
also	O
use	O
a	O
variety	O
of	O
output	O
driver	O
protocols	O
to	O
display	O
video	O
,	O
including	O
VDPAU	B-Application
,	O
the	O
X	B-Protocol
video	I-Protocol
extension	I-Protocol
,	O
OpenGL	B-Application
,	O
DirectX	B-Application
,	O
Direct3D	B-Application
,	O
Quartz	O
Compositor	O
,	O
VESA	O
,	O
Framebuffer	B-Algorithm
,	O
SDL	B-Operating_System
and	O
rarer	O
ones	O
such	O
as	O
ASCII	O
art	O
(	O
using	O
AAlib	B-Protocol
and	O
libcaca	B-Protocol
)	O
and	O
Blinkenlights	O
.	O
</s>
<s>
Since	O
version	O
1.0RC1	O
,	O
Mplayer	O
can	O
decode	O
subtitles	O
in	O
ASS/SSA	O
subtitle	O
format	O
,	O
using	O
libass	B-Language
.	O
</s>
<s>
Like	O
GStreamer	B-Language
,	O
MPlayer	O
has	O
only	O
command	B-Application
line	I-Application
interface	I-Application
and	O
there	O
are	O
a	O
couple	O
of	O
front-ends	B-Architecture
available	O
,	O
which	O
use	O
GUI	O
widgets	O
of	O
GTK	B-Application
,	O
Qt	B-Language
or	O
some	O
other	O
widget	O
library	O
.	O
</s>
<s>
When	O
not	O
using	O
these	O
front-ends	B-Architecture
,	O
mplayer	O
can	O
still	O
display	O
video	O
in	O
a	O
window	O
(	O
with	O
no	O
visible	O
controls	O
on	O
it	O
)	O
,	O
and	O
is	O
controlled	O
using	O
a	O
keyboard	O
.	O
</s>
<s>
Qt-based	O
are	O
SMPlayer	B-Language
and	O
KMPlayer	O
,	O
among	O
others	O
.	O
</s>
<s>
The	O
main	O
changes	O
from	O
MPlayer	O
were	O
improved	O
pause	O
handling	O
,	O
Matroska	O
support	O
,	O
seeking	O
,	O
and	O
support	O
for	O
Nvidia	O
VDPAU	B-Application
;	O
enabling	O
multithreading	O
by	O
default	O
;	O
and	O
the	O
removal	O
of	O
MEncoder	B-Language
,	O
the	O
GUI	O
interface	O
,	O
and	O
various	O
video	O
drivers	O
and	O
bundled	O
libraries	O
,	O
such	O
as	O
ffmpeg	B-Library
,	O
relying	O
instead	O
on	O
shared	O
libraries	O
.	O
</s>
<s>
The	O
developers	O
also	O
indicated	O
intentions	O
to	O
enable	O
MPlayer2	O
to	O
use	O
libav	B-Language
as	O
an	O
alternative	O
to	O
ffmpeg	B-Library
.	O
</s>
<s>
mpv	B-Language
is	O
a	O
GPLv2-licensed	O
fork	O
of	O
mplayer2	O
.	O
</s>
<s>
Since	O
June	O
2015	O
,	O
mpv	B-Language
has	O
worked	O
to	O
relicense	O
its	O
code	O
as	O
LGPL	B-Application
v2.1	O
or	O
above	O
.	O
</s>
<s>
MPlayer	O
,	O
MPlayer2	O
and	O
mpv	B-Language
all	O
use	O
incompatible	O
EDL	O
formats	O
.	O
</s>
<s>
In	O
January	O
2004	O
,	O
the	O
MPlayer	O
website	O
was	O
updated	O
with	O
an	O
allegation	O
that	O
the	O
Danish	O
DVD	O
player	O
manufacturer	O
,	O
Kiss	O
Technology	O
,	O
were	O
marketing	O
DVD	O
players	O
with	O
firmware	B-Application
that	O
included	O
parts	O
of	O
MPlayer	O
's	O
GPL-licensed	O
code	O
.	O
</s>
<s>
The	O
implication	O
was	O
that	O
Kiss	O
was	O
violating	O
the	O
GPL	B-License
,	O
since	O
Kiss	O
did	O
not	O
release	O
its	O
firmware	B-Application
under	O
the	O
GPL	B-License
license	I-License
.	O
</s>
<s>
The	O
response	O
from	O
the	O
managing	O
director	O
of	O
Kiss	O
,	O
Peter	O
Wilmar	O
Christensen	O
,	O
countered	O
that	O
the	O
similarities	O
between	O
the	O
two	O
pieces	O
of	O
code	O
indicate	O
that	O
the	O
MPlayer	O
team	O
had	O
in	O
fact	O
used	O
code	O
from	O
Kiss	O
's	O
firmware	B-Application
.	O
</s>
