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© Vbrick Systems, Inc.
P u lle d St re a m s
The Multi-protocol Streaming Server can pull live streams from an RTSP/RTP server or an
RTMP server. It can pull from various outside sources, for example from another DME, or
from a Wowza, FMS, QuickTime, or Darwin streaming server. These streams can then be
served or pushed via various protocols.
T ra n s m u xe d St re a m s
Transmuxing is the process whereby a digital bit stream is converted from one file format or
streaming protocol to another—without changing the compression method (as opposed to
transcoding
which actually changes the compression method). The DME transmuxes streams;
it does not transcode streams. An example of transmuxing is when a unicast stream is
converted to multicast or when an RTP stream is converted to RTMP. The following table
shows the live input streams that are supported in the left column and the live output streams
that are supported in the top row.
Table 1.
Live Transmux Capabilities
T ra n s ra t e d St re a m s
Transrating is the process where a digital bit stream is converted from one bit rate to another-
without changing the compression. An example of transrating is when a high bit rate stream
is converted into multiple lower bit rate streams for delivery to mobile devices. Note that the
DME Output Streams
RTMP
Unicast
Pull
RTMP
Auto-
Unicast
RTP
Unicast
Push
RTP
Auto-
Unicast
RTP
Unicast
RTSP
Pull
RTP
Multicast
TS
Unicast
Push
TS
Unicast
RTSP
Pull
TS
Multicast
Apple
HLS
VC SIP
DM
E
Inp
ut
Stre
ams
RTMP Unicast
Pull
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
RTMP Auto-
Unicast
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
RTP Unicast
Push
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
RTP Auto-
Unicast
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
RTP Unicast
RTSP Pull
Yes
Yes
Yes Yes
Yes
Yes Yes
Yes
Yes
Yes
No
RTP Multicast
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
TS Unicast Push Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
TS Unicast
RTSP Pull
(3.1.1)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
TS Multicast
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Apple HLS
No
No
No
No
No
No
No
No
No
Yes
(Cache)
No
Adobe HDS
No
No
No
No
No
No
No
No
No
Yes
(Cache)
No
VC SIP
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Summary of Contents for dme
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