<s>
Cinepak	B-Algorithm
is	O
a	O
lossy	B-Algorithm
video	B-Application
codec	I-Application
developed	O
by	O
Peter	O
Barrett	O
at	O
SuperMac	B-Device
Technologies	I-Device
,	O
and	O
released	O
in	O
1991	O
with	O
the	O
Video	O
Spigot	O
,	O
and	O
then	O
in	O
1992	O
as	O
part	O
of	O
Apple	O
Computer	O
's	O
QuickTime	B-Application
video	O
suite	O
.	O
</s>
<s>
One	O
of	O
the	O
first	O
video	O
compression	O
tools	O
to	O
achieve	O
full	B-Application
motion	I-Application
video	I-Application
on	O
CD-ROM	B-Device
,	O
it	O
was	O
designed	O
to	O
encode	O
320×240	O
resolution	O
video	O
at	O
1×	O
(	O
150	O
kbyte/s	O
)	O
CD-ROM	B-Device
transfer	O
rates	O
.	O
</s>
<s>
The	O
original	O
name	O
of	O
this	O
codec	O
was	O
Compact	O
Video	O
,	O
which	O
is	O
why	O
its	O
FourCC	B-Application
identifier	O
is	O
CVID	O
.	O
</s>
<s>
The	O
codec	O
was	O
ported	O
to	O
Microsoft	B-Application
Windows	I-Application
in	O
1993	O
.	O
</s>
<s>
It	O
was	O
also	O
used	O
on	O
fourth	B-Application
-	I-Application
and	O
fifth-generation	B-Application
game	O
consoles	O
,	O
such	O
as	O
the	O
Atari	B-Device
Jaguar	I-Device
CD	I-Device
,	O
Sega	B-Device
CD	I-Device
,	O
Sega	B-Device
Saturn	I-Device
,	O
and	O
3DO	B-Device
.	O
</s>
<s>
libavcodec	B-Language
includes	O
a	O
Cinepak	B-Algorithm
decoder	O
and	O
an	O
encoder	O
,	O
both	O
licensed	O
under	O
the	O
terms	O
of	O
the	O
LGPL	B-Application
.	O
</s>
<s>
It	O
was	O
the	O
primary	O
video	B-Application
codec	I-Application
of	O
early	O
versions	O
of	O
QuickTime	B-Application
and	O
Microsoft	O
Video	B-Device
for	I-Device
Windows	I-Device
,	O
but	O
was	O
later	O
superseded	O
by	O
Sorenson	O
Video	O
,	O
Intel	B-Algorithm
Indeo	I-Algorithm
,	O
and	O
most	O
recently	O
MPEG-4	B-Application
Part	I-Application
2	I-Application
and	O
H.264/MPEG	B-Application
-4	I-Application
AVC	I-Application
.	O
</s>
<s>
However	O
,	O
movies	O
compressed	O
with	O
Cinepak	B-Algorithm
are	O
generally	O
still	O
playable	O
in	O
most	O
media	O
players	O
.	O
</s>
<s>
Cinepak	B-Algorithm
is	O
based	O
on	O
vector	B-Algorithm
quantization	I-Algorithm
,	O
which	O
is	O
a	O
significantly	O
different	O
algorithm	O
from	O
the	O
discrete	B-General_Concept
cosine	I-General_Concept
transform	I-General_Concept
(	O
DCT	B-General_Concept
)	O
algorithm	O
used	O
by	O
most	O
current	O
codecs	O
(	O
in	O
particular	O
the	O
MPEG	O
family	O
,	O
as	O
well	O
as	O
JPEG	O
)	O
.	O
</s>
<s>
This	O
permitted	O
implementation	O
on	O
relatively	O
slow	O
CPUs	O
(	O
video	O
encoded	O
in	O
Cinepak	B-Algorithm
will	O
usually	O
play	O
fine	O
even	O
on	O
a	O
25MHz	O
Motorola	B-Device
68030	I-Device
,	O
consoles	O
like	O
the	O
Sega	B-Device
CD	I-Device
usually	O
used	O
even	O
slower	O
CPUs	O
,	O
e.g.	O
</s>
<s>
a	O
12.5MHz	O
68000	O
)	O
,	O
but	O
tended	O
to	O
result	O
in	O
blocky	O
artifacting	O
at	O
low	O
bitrates	O
,	O
which	O
explained	O
the	O
criticism	O
leveled	O
at	O
the	O
FMV-based	B-Application
video	O
games	O
.	O
</s>
<s>
The	O
vectors	O
that	O
are	O
quantized	O
in	O
Cinepak	B-Algorithm
are	O
2×2	O
pixel	O
blocks	O
.	O
</s>
<s>
For	O
processing	O
,	O
Cinepak	B-Algorithm
divides	O
a	O
video	O
into	O
key	O
(	O
intra-coded	O
)	O
images	O
and	O
inter-coded	O
images	O
.	O
</s>
