<s>
Video	B-Application
Decode	I-Application
and	I-Application
Presentation	I-Application
API	I-Application
for	I-Application
Unix	I-Application
(	O
VDPAU	B-Application
)	O
is	O
a	O
royalty-free	O
application	B-Application
programming	I-Application
interface	I-Application
(	O
API	B-Application
)	O
as	O
well	O
as	O
its	O
implementation	O
as	O
free	B-License
and	I-License
open-source	I-License
library	B-Library
(	O
)	O
distributed	O
under	O
the	B-License
MIT	I-License
License	I-License
.	O
</s>
<s>
VDPAU	B-Application
is	O
also	O
supported	O
by	O
Nvidia	O
.	O
</s>
<s>
The	O
VDPAU	B-Application
interface	O
is	O
to	O
be	O
implemented	O
by	O
device	B-Application
drivers	I-Application
,	O
such	O
as	O
Nvidia	B-Application
GeForce	I-Application
driver	I-Application
,	O
nouveau	B-Application
,	O
amdgpu	B-Application
,	O
to	O
offer	O
end-user	O
software	O
,	O
such	O
as	O
VLC	B-Application
media	I-Application
player	I-Application
or	O
GStreamer	B-Language
,	O
a	O
standardized	O
access	O
to	O
available	O
video	B-Application
decompression	I-Application
acceleration	O
hardware	O
in	O
the	O
form	O
of	O
application-specific	O
integrated	O
circuit	O
(	O
ASIC	O
)	O
blocks	O
on	O
graphics	B-Architecture
processing	I-Architecture
units	I-Architecture
(	O
GPU	B-Architecture
)	O
,	O
such	O
as	O
Nvidia	O
's	O
PureVideo	O
or	O
AMD	O
's	O
Unified	O
Video	O
Decoder	O
and	O
make	O
use	O
of	O
it	O
.	O
</s>
<s>
VDPAU	B-Application
is	O
targeted	O
at	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
(	O
including	O
Linux	B-Application
,	O
FreeBSD	B-Operating_System
,	O
Solaris	B-Application
)	O
.	O
</s>
<s>
VDPAU	B-Application
allows	O
video	O
programs	O
to	O
access	O
the	O
specialized	O
video	B-Application
decoding	I-Application
ASIC	O
on	O
the	O
GPU	B-Architecture
to	O
offload	O
portions	O
of	O
the	O
video	B-Application
decoding	I-Application
process	O
and	O
video	O
post-processing	O
from	O
the	O
CPU	B-General_Concept
to	O
the	O
GPU	B-Architecture
.	O
</s>
<s>
Currently	O
,	O
the	O
portions	O
capable	O
of	O
being	O
offloaded	O
by	O
VDPAU	B-Application
onto	O
the	O
GPU	B-Architecture
are	O
motion	B-Algorithm
compensation	I-Algorithm
(	O
mo	B-Algorithm
comp	I-Algorithm
)	O
,	O
inverse	B-General_Concept
discrete	I-General_Concept
cosine	I-General_Concept
transform	I-General_Concept
(	O
iDCT	B-General_Concept
)	O
,	O
VLD	B-Algorithm
(	O
variable-length	O
decoding	O
)	O
and	O
deblocking	B-General_Concept
for	O
MPEG-1	O
,	O
MPEG-2	B-Algorithm
,	O
MPEG-4	B-Application
ASP	I-Application
(	O
MPEG-4	B-Application
Part	I-Application
2	I-Application
)	O
,	O
H.264/MPEG	B-Application
-4	I-Application
AVC	I-Application
and	O
VC-1	B-Operating_System
,	O
WMV3/WMV9	O
encoded	O
videos	O
.	O
</s>
<s>
Which	O
specific	O
codecs	O
of	O
these	O
that	O
can	O
be	O
offloaded	O
to	O
the	O
GPU	B-Architecture
depends	O
on	O
the	O
generation	O
version	O
of	O
the	O
GPU	B-Architecture
hardware	O
.	O
</s>
<s>
VDPAU	B-Application
was	O
originally	O
designed	O
by	O
Nvidia	O
for	O
their	O
PureVideo	O
SIP	B-Architecture
block	I-Architecture
present	O
on	O
their	O
GeForce	O
8	O
series	O
and	O
later	O
GPUs	B-Architecture
.	O
</s>
<s>
On	O
March	O
9	O
,	O
2015	O
,	O
Nvidia	O
released	O
VDPAU	B-Application
version	O
1.0	O
which	O
supports	O
High	B-Algorithm
Efficiency	I-Algorithm
Video	I-Algorithm
Coding	I-Algorithm
(	O
HEVC	B-Algorithm
)	O
decoding	O
for	O
the	O
Main	O
,	O
Main	O
4:4:4	O
,	O
Main	O
Still	O
Picture	O
,	O
Main	O
10	O
,	O
and	O
Main	O
12	O
profiles	O
.	O
</s>
<s>
VDPAU	B-Application
is	O
implemented	O
in	O
X11	B-Operating_System
software	O
device	B-Application
drivers	I-Application
,	O
but	O
relies	O
on	O
acceleration	O
features	O
in	O
the	O
hardware	O
GPU	B-Architecture
.	O
</s>
<s>
All	O
Nvidia	O
graphic	B-Device
cards	I-Device
for	O
which	O
the	O
driver	O
implements	O
VDPAU	B-Application
are	O
listed	O
in	O
Nvidia	O
PureVideo	O
.	O
</s>
<s>
S3	O
Graphics	O
added	O
VDPAU	B-Application
to	O
the	O
Linux	B-Application
drivers	O
of	O
their	O
Chrome	B-Device
400	I-Device
video	B-Device
cards	I-Device
.	O
</s>
<s>
As	O
of	O
version	O
14.02.17	O
of	O
its	O
Linux	B-Application
device	I-Application
driver	I-Application
,	O
VDPAU	B-Application
is	O
available	O
with	O
the	O
S3	O
Chrome	O
430	O
GT	O
,	O
S3	O
Chrome	O
440	O
GTX	O
,	O
S3	O
Chrome	O
530	O
GT	O
and	O
the	O
S3	O
Chrome	O
540	O
GTX	O
hardware	O
.	O
</s>
<s>
ATI/AMD	O
released	O
an	O
open	O
source	O
driver	O
for	O
Radeon	O
HD	O
4000+	O
graphic	B-Device
cards	I-Device
featuring	O
VDPAU	B-Application
acceleration	O
.	O
</s>
<s>
Intel	O
does	O
not	O
offer	O
VDPAU	B-Application
drivers	O
,	O
they	O
only	O
support	O
their	O
VA-API	B-Application
.	O
</s>
<s>
It	O
is	O
,	O
however	O
,	O
possible	O
to	O
use	O
Intel	O
's	O
VA-API	B-Application
drivers	O
by	O
way	O
of	O
libvdpau-va-gl	O
.	O
</s>
<s>
Nvidia	O
hopes	O
other	O
GPU	B-Architecture
designers	O
will	O
make	O
their	O
products	O
compatible	O
with	O
the	O
open	O
source	O
VDPAU	B-Application
library	B-Library
and	O
provide	O
drivers	O
with	O
VDPAU	B-Application
acceleration	O
by	O
mentioning	O
example	O
names	O
of	O
hardware	O
specific	O
drivers	O
for	O
Intel	O
and	O
ATI	O
:	O
libvdpau_intel.so	O
and	O
libvdpau_ati.so	O
.	O
</s>
<s>
Intel	O
has	O
stated	O
they	O
are	O
considering	O
VDPAU	B-Application
.	O
</s>
<s>
sunxi	O
SoCs	B-Architecture
(	O
Allwinner	B-Architecture
)	O
have	O
experimental	O
VDPAU	B-Application
implementation	O
.	O
</s>
<s>
Mesa	B-Application
as	O
of	O
v8.0	O
includes	O
VDPAU	B-Application
for	O
video	B-Device
cards	I-Device
that	O
utilize	O
Gallium3D	O
.	O
</s>
<s>
As	O
of	O
late	O
2013	O
,	O
there	O
is	O
an	O
independently	O
developed	O
back-end	B-Architecture
driver	O
that	O
in	O
turn	O
uses	O
OpenGL	B-Application
(	O
for	O
drawing	O
and	O
scaling	O
)	O
,	O
and	O
VA-API	B-Application
if	O
available	O
(	O
for	O
decoding	O
)	O
.	O
</s>
<s>
It	O
has	O
been	O
reported	O
to	O
work	O
on	O
some	O
Intel	B-Application
graphics	I-Application
and	O
Adobe	B-Operating_System
Flash	I-Operating_System
Player	I-Operating_System
.	O
</s>
<s>
The	O
accelerated	O
scaling	O
with	O
just	O
OpenGL	B-Application
functionality	O
is	O
needed	O
mostly	O
because	O
of	O
Flash	B-Operating_System
player	I-Operating_System
,	O
which	O
uses	O
un-accelerated	O
scaling	O
if	O
VDPAU	B-Application
is	O
unavailable	O
.	O
</s>
<s>
Almost	O
all	O
other	O
video	O
software	O
that	O
runs	O
on	O
Linux	B-Application
or	O
FreeBSD	B-Operating_System
supports	O
Xv	B-Protocol
.	O
</s>
<s>
It	O
's	O
essential	O
for	O
full-screen	O
video	O
on	O
slower	O
computers	O
without	O
native	O
VDPAU	B-Application
support	O
.	O
</s>
<s>
The	O
VDPAU	B-Application
to	O
VA-API	B-Application
translation	O
for	O
HW	O
decoding	O
is	O
useful	O
with	O
recent	O
Intel	B-Application
graphics	I-Application
hardware	O
,	O
as	O
some	O
software	O
supports	O
HW	O
decoding	O
through	O
VDPAU	B-Application
but	O
not	O
VA-API	B-Application
.	O
</s>
<s>
VDPAU	B-Application
can	O
also	O
be	O
used	O
as	O
a	O
backend	B-Architecture
for	O
VA-API	B-Application
and	O
OpenMAX	B-Application
IL	I-Application
,	O
which	O
themselves	O
cover	O
a	O
subset	O
of	O
the	O
VDPAU	B-Application
capabilities	O
;	O
so	O
any	O
software	O
that	O
uses	O
the	O
VA-API	B-Application
or	O
OpenMAX	B-Application
IL	I-Application
is	O
also	O
partly	O
capable	O
of	O
using	O
VDPAU	B-Application
(	O
e.g.	O
,	O
VLC	B-Application
media	I-Application
player	I-Application
)	O
.	O
</s>
<s>
Nvidia	O
VDPAU	B-Application
Feature	O
Sets	O
are	O
different	O
hardware	O
generations	O
of	O
GPU	B-Architecture
's	O
supporting	O
different	O
levels	O
of	O
(	O
Nvidia	O
PureVideo	O
)	O
hardware	O
decoding	O
capabilities	O
.	O
</s>
<s>
For	O
feature	O
sets	O
A	O
,	O
B	O
and	O
C	B-Language
,	O
the	O
maximum	O
video	O
width	O
and	O
height	O
are	O
2048	O
pixels	B-Algorithm
,	O
minimum	O
width	O
and	O
height	O
48	O
pixels	B-Algorithm
,	O
and	O
all	O
codecs	O
are	O
currently	O
limited	O
to	O
a	O
maximum	O
of	O
8192	O
macroblocks	B-General_Concept
(	O
8190	O
for	O
VC-1/WMV9	O
)	O
.	O
</s>
<s>
Partial	O
acceleration	O
means	O
that	O
VLD	B-Algorithm
(	O
bitstream	O
)	O
decoding	O
is	O
performed	O
on	O
the	O
CPU	B-General_Concept
,	O
with	O
the	O
GPU	B-Architecture
only	O
performing	O
IDCT	B-General_Concept
,	O
motion	B-Algorithm
compensation	I-Algorithm
and	O
deblocking	B-General_Concept
.	O
</s>
<s>
Complete	O
acceleration	O
means	O
that	O
the	O
GPU	B-Architecture
performs	O
all	O
of	O
VLD	B-Algorithm
,	O
IDCT	B-General_Concept
,	O
motion	B-Algorithm
compensation	I-Algorithm
and	O
deblocking	B-General_Concept
.	O
</s>
<s>
Supports	O
complete	O
acceleration	O
for	O
MPEG-1	O
,	O
MPEG-2	B-Algorithm
,	O
VC-1/WMV9	O
and	O
H.264	B-Application
.	O
</s>
<s>
Note	O
that	O
all	O
Feature	O
Set	O
B	O
hardware	O
cannot	O
decode	O
H.264	B-Application
for	O
the	O
following	O
widths	O
:	O
769-784	O
,	O
849-864	O
,	O
929-944	O
,	O
1009-1024	O
,	O
1793-1808	O
,	O
1873-1888	O
,	O
1953-1968	O
,	O
2033-2048	O
pixels	B-Algorithm
.	O
</s>
<s>
Supports	O
complete	O
acceleration	O
for	O
MPEG-1	O
,	O
MPEG-2	B-Algorithm
,	O
MPEG-4	B-Application
Part	I-Application
2	I-Application
(	O
a.k.a.	O
</s>
<s>
MPEG-4	B-Application
ASP	I-Application
)	O
,	O
VC-1/WMV9	O
and	O
H.264	B-Application
.	O
</s>
<s>
Global	B-Algorithm
motion	I-Algorithm
compensation	I-Algorithm
and	O
Data	O
Partitioning	O
are	O
not	O
supported	O
for	O
MPEG-4	B-Application
Part	I-Application
2	I-Application
.	O
</s>
<s>
Similar	O
to	O
feature	O
set	O
C	B-Language
but	O
added	O
support	O
for	O
decoding	O
H.264	B-Application
with	O
a	O
resolution	O
of	O
up	O
to	O
4032	O
×	O
4080	O
and	O
MPEG-1/MPEG	O
-2	O
with	O
a	O
resolution	O
of	O
up	O
to	O
4032	O
×	O
4048	O
pixels	B-Algorithm
.	O
</s>
<s>
Similar	O
to	O
feature	O
set	O
D	O
but	O
added	O
support	O
for	O
decoding	O
H.264	B-Application
with	O
a	O
resolution	O
of	O
up	O
to	O
4096	O
×	O
4096	O
and	O
MPEG-1/MPEG	O
-2	O
with	O
a	O
resolution	O
of	O
up	O
to	O
4080	O
×	O
4080	O
pixels	B-Algorithm
.	O
</s>
<s>
GPUs	B-Architecture
with	O
VDPAU	B-Application
feature	O
set	O
E	O
support	O
an	O
enhanced	O
error	O
concealment	O
mode	O
which	O
provides	O
more	O
robust	O
error	O
handling	O
when	O
decoding	O
corrupted	O
video	O
streams	O
.	O
</s>
<s>
Introduced	O
dedicated	O
HEVC	B-Algorithm
Main	O
(	O
8-bit	O
)	O
,	O
Main	O
10	O
(	O
10-bit	O
)	O
and	O
VP9	O
Profile	O
0	O
(	O
8-bit	O
)	O
video	B-Application
decoding	I-Application
up	O
to	O
4096	O
×	O
2304	O
pixels	B-Algorithm
resolution	O
.	O
</s>
<s>
Hardware	O
support	O
for	O
HEVC	B-Algorithm
Main	O
12	O
(	O
12-bit	O
)	O
and	O
VP9	O
Profile	O
2	O
(	O
12-bit	O
)	O
video	B-Application
decoding	I-Application
are	O
added	O
.	O
</s>
<s>
Feature	O
Set	O
H	O
are	O
capable	O
of	O
hardware-accelerated	O
decoding	O
of	O
8192x8192	O
(	O
8k	O
resolution	O
)	O
H.265/HEVC	B-Algorithm
video	O
streams	O
.	O
</s>
<s>
Feature	O
Set	O
J	O
adds	O
HEVC	B-Algorithm
444	O
decode	O
support	O
.	O
</s>
<s>
The	O
libvdpau	O
standalone	O
VDPAU	B-Application
library	B-Library
is	O
distributed	O
by	O
Nvidia	O
independently	O
of	O
their	O
proprietary	O
Linux	B-Application
graphics	O
driver	O
in	O
an	O
effort	O
to	O
help	O
the	O
adoption	O
of	O
VDPAU	B-Application
by	O
those	O
outside	O
of	O
Nvidia	O
.	O
</s>
<s>
This	O
open	O
source	O
library	B-Library
package	O
contains	O
a	O
wrapper	O
library	B-Library
and	O
a	O
debugging	O
library	B-Library
allowing	O
other	O
manufacturers	O
to	O
implement	O
VDPAU	B-Application
in	O
their	O
device	B-Application
drivers	I-Application
.	O
</s>
