Name: VBrick dme
Brand: VBrick
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16 © Vbrick Systems, Inc.

Pulled Stream 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.

Transm uxed Stream 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

Transrated Stream 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

Unicast

Push

Unicast

RTSP

Pull

Multicast

Apple

HLS

VC SIP

Inp

Stre

ams

RTMP Unicast

Pull