<s>
Wirecast	B-Operating_System
is	O
a	O
live	O
video	B-Application
streaming	I-Application
production	O
tool	O
by	O
Telestream	O
.	O
</s>
<s>
It	O
allows	O
users	O
to	O
create	O
live	O
or	O
on-demand	B-Application
broadcasts	O
for	O
the	O
web	O
.	O
</s>
<s>
Wirecast	B-Operating_System
is	O
a	O
software	O
video	O
switcher	O
,	O
controlling	O
real-time	O
switching	O
between	O
multiple	O
live	O
video	O
cameras	O
,	O
while	O
dynamically	O
mixing	O
in	O
other	O
source	O
media	O
,	O
such	O
as	O
QuickTime	B-Application
movies	O
,	O
music	O
,	O
audio	O
and	O
slides	O
to	O
create	O
professional	O
broadcast	O
productions	O
for	O
live	O
or	O
on-demand	B-Application
distribution	O
on	O
the	O
web	O
.	O
</s>
<s>
Adds	O
a	O
built-in	O
streaming	O
service	O
access	O
from	O
Ustream	B-Application
.	O
</s>
