<s>
Guvcview	B-Language
(	O
GTK+	B-Application
UVC	B-Application
Viewer	O
)	O
is	O
a	O
webcam	B-Protocol
application	O
,	O
i.e.	O
</s>
<s>
software	O
to	O
handle	O
UVC	B-Application
streams	O
,	O
for	O
the	O
Linux	B-Application
desktop	O
,	O
started	O
by	O
Paulo	O
Assis	O
in	O
2008	O
.	O
</s>
<s>
The	O
application	O
is	O
written	O
in	O
C	B-Language
and	O
is	O
free	B-License
and	I-License
open-source	I-License
software	I-License
released	O
under	O
GPL-2.0-or-later	B-License
.	O
</s>
<s>
Guvcview	B-Language
is	O
compatible	O
with	O
all	O
V4L2	B-Application
camera	O
devices	O
,	O
using	O
the	O
Linux	B-Application
UVC	B-Application
driver	O
and	O
based	O
on	O
luvcview	O
for	O
video	O
rendering	O
.	O
</s>
<s>
Audio	O
support	O
employs	O
the	O
PortAudio	B-Language
open-source	O
library	O
.	O
</s>
<s>
The	O
application	O
's	O
user	B-Application
interface	I-Application
is	O
built	O
using	O
GTK+	B-Application
and	O
is	O
designed	O
to	O
be	O
simple	O
and	O
easy	O
to	O
use	O
.	O
</s>
<s>
The	O
application	O
has	O
been	O
noted	O
as	O
using	O
fewer	O
resources	O
than	O
other	O
webcam	B-Protocol
applications	O
,	O
such	O
as	O
the	O
GNOME	B-Application
standard	O
webcam	B-Protocol
application	O
,	O
Cheese	B-Language
,	O
and	O
is	O
an	O
alternative	O
to	O
other	O
webcam	B-Protocol
applications	O
,	O
including	O
Apple	B-Application
Photo	I-Application
Booth	I-Application
and	O
KDE	O
Kamoso	O
.	O
</s>
<s>
Guvcview	B-Language
uses	O
a	O
two-window	O
interface	O
in	O
normal	O
use	O
.	O
</s>
<s>
Through	O
the	O
Linux	B-Application
UVC	B-Application
driver	O
,	O
Guvcview	B-Language
offers	O
extension	O
controls	O
,	O
vendor-specific	O
controls	O
included	O
in	O
the	O
UVC	B-Application
specifications	O
,	O
which	O
are	O
dynamically	O
loaded	O
into	O
the	O
driver	O
.	O
</s>
<s>
At	O
present	O
only	O
webcam-maker	O
Logitech	O
has	O
provided	O
the	O
specifications	O
for	O
their	O
UVC	B-Application
webcam	B-Protocol
extension	O
controls	O
and	O
as	O
a	O
result	O
Logitech	O
camera	O
extension	O
controls	O
are	O
included	O
.	O
</s>
<s>
Starting	O
with	O
version	O
0.9.9	O
,	O
Guvcview	B-Language
was	O
able	O
to	O
be	O
operated	O
in	O
control	O
window	O
only	O
mode	O
and	O
used	O
to	O
control	O
images	O
on	O
other	O
applications	O
,	O
including	O
Ekiga	B-Language
,	O
Cheese	B-Language
,	O
mplayer	B-Application
and	O
Skype	B-Application
.	O
</s>
<s>
Still	O
images	O
can	O
be	O
recorded	O
in	O
.bmp	B-Device
,	O
.jpg	O
,	O
.png	O
,	O
.raw	B-Application
and	O
videos	O
in	O
.avi	O
,	O
.mkv	O
(	O
Matroska	O
Multimedia	O
Container	O
open	O
standard	O
format	O
)	O
and	O
Google	B-Application
's	I-Application
.webm	B-Application
open	O
standard	O
format	O
.	O
</s>
<s>
Guvcview	B-Language
has	O
been	O
available	O
in	O
Debian	O
for	O
many	O
instruction	B-General_Concept
sets	I-General_Concept
,	O
and	O
in	O
the	O
Ubuntu	B-Operating_System
repositories	O
since	O
Ubuntu	B-Operating_System
13.10	O
in	O
2012	O
.	O
</s>
<s>
Until	O
the	O
18.10	O
release	O
,	O
it	O
was	O
the	O
default	O
webcam	B-Protocol
application	O
included	O
with	O
Lubuntu	B-Application
.	O
</s>
<s>
Guvcview	B-Language
is	O
also	O
available	O
in	O
the	O
Debian	O
and	O
Puppy	O
Linux	B-Application
repositories	O
.	O
</s>
<s>
In	O
reviewing	O
Guvcview	B-Language
in	O
February	O
2011	O
,	O
Jack	O
Wallen	O
wrote	O
in	O
Ghacks	O
,	O
"	O
Recently	O
I	O
have	O
had	O
to	O
do	O
some	O
video	O
tutorials	O
.	O
</s>
<s>
I	O
tried	O
recording	O
these	O
tutorials	O
with	O
Ubuntu	B-Operating_System
's	O
default	O
Cheese	B-Language
Webcam	B-Protocol
Booth	O
,	O
but	O
unfortunately	O
the	O
combination	O
of	O
my	O
Logitech	O
Quickcam	O
Pro	O
9000	O
,	O
Ubuntu	B-Operating_System
10.10	O
,	O
and	O
Cheese	B-Language
did	O
n't	O
want	O
to	O
record	O
video	O
in	O
any	O
usable	O
FPS	O
.	O
</s>
<s>
My	O
search	O
turned	O
me	O
to	O
GUVCView	B-Language
and	O
I	O
ca	O
n't	O
tell	O
you	O
how	O
happy	O
I	O
have	O
been	O
with	O
the	O
results	O
.	O
</s>
<s>
Not	O
only	O
is	O
this	O
tool	O
as	O
easy	O
to	O
use	O
as	O
Cheese	B-Language
,	O
it	O
's	O
far	O
more	O
flexible	O
,	O
and	O
renders	O
much	O
better	O
video	O
...	O
GUVCView	B-Language
,	O
from	O
my	O
perspective	O
,	O
is	O
a	O
much	O
better	O
means	O
of	O
recording	O
video	O
than	O
Cheese	B-Language
.	O
</s>
<s>
This	O
especially	O
applies	O
if	O
the	O
video	O
you	O
are	O
recording	O
is	O
to	O
be	O
used	O
for	O
something	O
other	O
than	O
,	O
say	O
,	O
Skype	B-Application
chatting.	O
"	O
</s>
<s>
Jim	O
Lynch	O
,	O
writing	O
on	O
Linux	B-Application
Desktop	O
Reviews	O
in	O
May	O
2011	O
,	O
was	O
less	O
enthusiastic	O
about	O
the	O
application	O
's	O
inclusion	O
in	O
Lubuntu	B-Application
,	O
"	O
I	O
actually	O
like	O
Cheese	B-Language
so	O
I	O
ca	O
n’t	O
say	O
I	O
’m	O
real	O
thrilled	O
about	O
it	O
being	O
replaced	O
by	O
guvcview	B-Language
,	O
but	O
it	O
’s	O
sort	O
of	O
six	O
of	O
one	O
or	O
half	O
dozen	O
of	O
the	O
other	O
when	O
it	O
comes	O
to	O
these	O
two	O
programs	O
.	O
</s>
<s>
Hectic	O
Geek	O
reviewed	O
the	O
application	O
in	O
September	O
2012	O
and	O
concluded	O
"	O
I	O
...	O
did	O
n’t	O
have	O
any	O
issues	O
with	O
it	O
and	O
successfully	O
recorded	O
videos	O
(	O
you	O
can	O
manually	O
disable	O
audio	O
input	O
)	O
and	O
took	O
pictures	O
,	O
added	O
few	O
funny	O
effects	O
…	O
all	O
is	O
good	O
with	O
guvcview	B-Language
....	O
"	O
</s>
<s>
The	O
application	O
is	O
rated	O
as	O
4.5/5	O
on	O
SourceForge	B-Application
.	O
</s>
