Figure 1 shows a typical VNM Recorder application, which includes a single VN‑Matrix
codec. The application shown in figure 1 can operate in recording mode or playback mode.
Network
VN-MATRIX 300 SERIES
SERIAL DIGITAL VIDEO OVER IP
LAN-1
LAN-2
STATUS
ALARM
TEST
Control PC
TCP/RTP
TCP/RTP
Source
VN-Matrix Codec
VNM Recorder
Target
Display
Figure 1. VNM Recorder Application Diagram
Overview of Recorded Streams
The following information is associated with recorded streams when using the
VNM Recorder.
zRecorded streams are stored as files on the VNM Recorder.
zEach recording contains (as a minimum) a video element.
zA recording may also include elements containing audio, data, and whiteboard
information (if these are present and enabled at the encoder). If these are selected
for storage, each element is stored as an individual file under the same directory.
zEach recording may contain up to five channels.
zEach channel originates from a VN‑Matrix encoder device (or a VN‑Matrix codec
configured as an encoder).
Overview of Stream Playback
The following information is associated with stream playback when using the VNM Recorder.
zWhen a recording is selected for playback that contains multiple elements, the
necessary files and channels (a maximum of five channels are supported) are loaded.
zThe files that are loaded in each channel are treated as a single recording and may
not be split.
zThe video content, which is assigned to channel 1, is always played.
zThe audio, data, and whiteboard elements may be enabled or disabled for playback
(when present in the recording).
zDuring playback, the audio, whiteboard, and data elements are always slaved to
their respective video stream. In other words, all channels are slaved to the video
stream on channel 1.
VNM Recorder • Introduction 2