Troubleshooting

Efficient Video Distribution Networks with.Multicast: IGMP Querier and PIM-DM

7. Check the Display Locally box, and click Add.

8. In the Address field, enter a valid IPv4 multicast group address (we used 239.0.0.25).

Caution: Some multicast addresses in the multicast range are reserved. It is best

to use an address of 239.X.Y.Z, where X is not 0, 128, 144, 160, OR Y is not 0, OR Z

is not 1, 2, 3, or 4, or 13. Using a reserved address will impede you network’s

efficiency. Table 1 provides some examples:

Examples of Multicast Addresses Table 1.

Good (non-reserved) multicast addresses

Bad (reserved) multicast addresses

239.0.0.5 239.0.0.6 239.0.100.99

239.1.0.2 239.3.0.1 239.0.1.1

239.0.0.1 239.0.0.2 239.0.0.13

239.128.0.4 239.144.0.1 239.0.0.3

9. Base Port must be 5004.

Note: Port 5004 is assigned to RTP media data only. See

http://www.iana.org/assignments/service-names-port-numbers/service-names-port-

numbers.xml for more information about port assignments.

10. Make sure there is a check in the Activate Transcoding checkbox.

11. If using an MP4 file, set the Profile pull-down menu to either MP4 profile:

a. Video – H.264 + ACC (MP4), or

b. Video – H.264 + MP3 (MP4)

If using a WMA/WMV file, use Profile: Video – WMV + WMA

12. Click Stream. A multicast group is now created for others to join.

Note: Allow a few seconds for the video to begin playing locally on the Video Server. At that

point, the video is also being transmitted to the multicast stream.

Note: Some MP4 files will only display the first video frame locally on the server, but are still

being streamed to the network, which is seen by the progress bar below the display. To get

around this issue, stream WMV/WMA or other files.

13. Pressing the Loop button at the bottom of the VLC screen will keep the file playing in a

continuous loop. This is very helpful when setting up clients for testing.

From a Multicast Client (Receiver):

1. Start VLC Player.

2. Select Media -> Open Network Stream...

3. Enter the Network URL: RTP://239.0.0.25:5004 (same address from steps 8 and 9 above).