60 C1553M-B (4/05)
CONFIGURE THE ENCODING/DECODING TAB (PELCONET 4001A ONLY)
Figure 55. Encoding/Decoding Tab for PelcoNet 4001A
The PelcoNet 4001A supports MPEG-2 and MPEG-4 streaming.

Number of Simultaneous Streams

VMX300(-E) can display multiple digital video windows for viewing the area under surveillance. However, the number of digital windows that can
be displayed at one time is limited by the size and type of images selected for viewing. Refer to Table B for an overview of the CPU workload and
bandwidth amounts used for each type of vide stream (the video in a custom window). This table also includes a recommended maximum
number of streams for each type.
MPEG-2: Enter the maximum number of MPEG-2 streams you want the encoder/decoder to transmit at one time. The default setting is the
maximum number of MPEG-2 streams the encoder/decoder is capable of transmitting (without multicasting). In order to display
MPEG-2 streams in a custom window, the window’s canvas must be configured to display the MPEG-2 signal type.
MPEG-4: Enter the maximum number of MPEG-4 streams you want the encoder/decoder to transmit at one time. The default setting is the
maximum number of MPEG-4 streams the encoder/decoder is capable of transmitting (without multicasting). To limit bandwidth
usage, reduce this setting below the maximum capacity. In order to display MPEG-4 streams in a custom window, the window’s
canvas must be configured to display the MPEG-4 signal type.
For instructions on configuring a canvas to display MPEG-2 and MPEG-4 steams, refer to Add a New Canvas (PelcoNet).

Multicast

This feature is available only if your network supports IP multicasting.
To configure multicast settings through VMX300(-E), complete the following steps:
1. Click the Mode field, and then select the type of stream you want the encoder/decoder to multicast from the drop-down box. If your
selection includes MPEG-2, the “Number of simultaneous streams” MPEG-2 field is automatically set to 999 If your selection includes
MPEG-4, the “Number of simultaneous streams” MPEG-4 field is automatically set to 999. This allows an almost unlimited number of
simultaneous recipients of the stream.
2. Enter the IP multicast group address.
3. If the encoder/decoder is configured to multicast MPEG-2 streams, enter the IP multicast group MPEG-2 port in the MPEG-2 Port field. If the
encoder/decoder is connected, the MPEG-2 port number is automatically uploaded from the encoder/decoder when you select the mode.
NOTE: If a NVR300 Series network video recorder is being used to record video from this encoder/decoder, you should subtract a stream
from the total number of streams entered on the Encoding/Decoding tab. For example, if you would normally transmit one MPEG-2 stream
and five MPEG-4 streams, and you record the MPEG-4 stream, then you should enter 1 in the MPEG-2 field and 5 in the MPEG-4 field.