<s>
XVidCap	B-Language
is	O
free	O
software	O
used	O
for	O
recording	O
a	O
screencast	B-Protocol
or	O
digital	O
recording	O
of	O
an	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
screen	O
output	O
with	O
an	O
audio	O
narration	O
.	O
</s>
<s>
XVidCap	B-Language
is	O
intended	O
to	O
be	O
a	O
standards-based	O
,	O
open-source	B-Application
alternative	O
to	O
commercial	O
software	O
such	O
as	O
Lotus	O
ScreenCam	O
for	O
UNIX	O
platforms	O
and	O
is	O
similar	O
to	O
Camtasia	B-Protocol
.	O
</s>
<s>
XVidCap	B-Language
works	O
using	O
an	O
on-line	O
encoding	O
facility	O
with	O
the	O
FFmpeg	B-Library
libavcodec	O
/	O
libavformat	B-Library
.	O
</s>
<s>
It	O
can	O
capture	O
any	O
movement	O
on	O
an	O
X11	B-Operating_System
display	O
either	O
as	O
single	O
frames	O
(	O
like	O
a	O
number	O
of	O
JPEG	O
images	O
)	O
or	O
it	O
can	O
encode	O
the	O
captured	O
frames	O
to	O
a	O
video	O
on-line	O
.	O
</s>
<s>
It	O
can	O
also	O
grab	O
and	O
embed	O
an	O
audio	O
recording	O
provided	O
users	O
have	O
an	O
OSS	O
compatible	O
system	O
and	O
FFMPEG	B-Library
libraries	O
with	O
compiled	O
audio	O
capture	O
support	O
.	O
</s>
