<s>
Unreal	B-Application
Media	I-Application
Server	I-Application
is	O
a	O
streaming	O
server	O
software	O
created	O
by	O
Unreal	O
Streaming	O
Technologies	O
.	O
</s>
<s>
Proprietary	B-Application
UMS	O
streaming	O
protocol	O
is	O
based	O
on	O
Microsoft	O
DirectShow	B-Library
,	O
and	O
therefore	O
,	O
UMS	O
protocol	O
is	O
codec-independent	O
.	O
</s>
<s>
UMS	O
protocol	O
realizes	O
a	O
distributed	O
DirectShow	B-Library
graph	O
where	O
source	O
filter	O
resides	O
on	O
the	O
server	O
computer	O
and	O
renderer	O
filter	O
resides	O
on	O
the	O
player	O
computer	O
;	O
a	O
corresponding	O
DirectShow	B-Library
decoder	O
needs	O
to	O
be	O
installed	O
at	O
the	O
player	O
computer/device	O
.	O
</s>
<s>
Supported	O
file	O
container	O
formats	O
:	O
MP4	O
,	O
ASF	B-Application
,	O
AVI	O
,	O
MKV	O
,	O
MPEG	O
,	O
WMV	B-Device
,	O
FLV	B-Operating_System
,	O
Ogg	O
,	O
MP3	B-Application
,	O
3GP	O
,	O
MOV	B-Application
,	O
other	O
containers	O
.	O
</s>
<s>
With	O
regards	O
to	O
live	O
video	O
,	O
Unreal	B-Application
Media	I-Application
Server	I-Application
acts	O
as	O
universal	O
transmuxer	O
:	O
it	O
receives	O
live	O
streams	O
multiplexed	O
(	O
muxed	O
)	O
in	O
different	O
protocols/formats	O
(	O
WebRTC/RTSP	O
-RTP	O
,	O
MS-WMSP/ASF	O
,	O
MPEG2-TS	O
,	O
UMS	O
)	O
,	O
demuxes	O
(	O
extracts	O
)	O
the	O
actual	O
elementary	O
streams	O
from	O
these	O
containers	O
(	O
no	O
decoding	O
or	O
transcoding	O
)	O
,	O
and	O
muxes	O
(	O
packages	O
)	O
it	O
for	O
specific	O
player	O
delivery	O
.	O
</s>
<s>
For	O
example	O
,	O
it	O
can	O
ingest	O
a	O
live	O
RTSP	B-Protocol
stream	O
from	O
IP	O
camera	O
and	O
send	O
it	O
to	O
WebRTC	B-Protocol
players	O
;	O
at	O
the	O
same	O
time	O
re-mux	O
it	O
into	O
RTMP/FLV	O
protocol/format	O
for	O
delivery	O
to	O
Adobe	B-Operating_System
Flash	I-Operating_System
Player	I-Operating_System
;	O
at	O
the	O
same	O
time	O
re-mux	O
it	O
to	O
video/mp4	O
segments	O
for	O
delivery	O
via	O
WebSocket	O
protocol	O
to	O
HTML5	O
MSE	O
players	O
in	O
web	O
browsers	O
;	O
at	O
the	O
same	O
time	O
re-mux	O
it	O
to	O
MPEG2-TS	O
for	O
delivery	O
to	O
Set-Top	O
box	O
,	O
and	O
at	O
the	O
same	O
time	O
send	O
it	O
to	O
iOS	O
devices	O
with	O
HLS	O
protocol	O
.	O
</s>
<s>
Unreal	B-Application
Media	I-Application
Server	I-Application
is	O
known	O
for	O
low	O
latency	O
live	O
streaming	O
;	O
with	O
UMS	O
,	O
WebRTC	B-Protocol
,	O
WebSocket-video/mp4	O
,	O
RTMP	B-Operating_System
and	O
MPEG2-TS	O
protocols	O
latencies	O
of	O
0.2	O
–	O
2	O
seconds	O
can	O
be	O
achieved	O
when	O
streaming	O
over	O
the	O
Internet	O
;	O
with	O
Apple	O
HLS	O
the	O
latency	O
can	O
be	O
as	O
low	O
as	O
3	O
seconds	O
.	O
</s>
<s>
A	O
first	O
version	O
of	O
Unreal	B-Application
Media	I-Application
Server	I-Application
,	O
released	O
in	O
October	O
2003	O
,	O
supported	O
proprietary	B-Application
UMS	O
protocol	O
only	O
.	O
</s>
<s>
In	O
the	O
next	O
versions	O
additional	O
streaming	O
protocols	O
such	O
as	O
MS-WMSP(MMS )	O
and	O
RTMP	B-Operating_System
were	O
added	O
.	O
</s>
<s>
Before	O
version	O
9.0	O
the	O
Server	O
accepted	O
live	O
streams	O
from	O
proprietary	B-Application
encoder	O
named	O
Unreal	O
Live	O
Server	O
only	O
.	O
</s>
<s>
With	O
version	O
9.0	O
the	O
ability	O
of	O
ingesting	O
of	O
RTSP	B-Protocol
,	O
MPEG2-TS	O
and	O
MMS	O
live	O
streams	O
was	O
introduced	O
,	O
to	O
support	O
industry	O
standard	O
live	O
encoders	O
such	O
as	O
IP	O
network	O
cameras	O
,	O
Windows	O
Media	O
Encoder	O
etc	O
.	O
</s>
<s>
Version	O
13.0	O
added	O
full	O
WebRTC	B-Protocol
support	O
:	O
ingesting	O
live	O
WebRTC	B-Protocol
streams	O
from	O
web	O
browsers	O
and	O
sending	O
live	O
WebRTC	B-Protocol
streams	O
to	O
web	O
browsers	O
.	O
</s>
<s>
Version	O
15.0	O
added	O
RTSP	B-Protocol
server	O
and	O
full	O
SRT	O
support	O
(	O
ingest	O
and	O
publishing	O
)	O
.	O
</s>
