VLS 0.5.6 on Linux has jerky multicast streams

[Jarod]

Hi everybody,
I installed vls 0.5.6 yesterday. I created a config file containing everything needed to run the server as a multicast server. The file I am providing as a stream is from a selfmade DVD (made with Nero6).
The current problem is, that this stream plays well with vlc-0.8.2 if sent as Unicast rtp. But as soon as I send it as a multicast stream it plays jerky or even with picture distortions. The Audio is not affected by the distortions.
Can anyone point me into the right directions on why unicast plays without errors and multicast is jerky?

If I'm starting vls with "start DVD client1 local1 --rtp" then everything plays well with VLC. If started with "start DVD multicast local1 --loop" I get distortions mentioned above.

Below an excerpt from my config file:
----
BEGIN "Channels"
client1 = "network"
multicast = "network"
END

BEGIN "client1"
DstHost = "192.168.0.1"
DstPort = "1234"
END

BEGIN "multicast"
Type = "multicast"
TTL = "1"
DstHost = "224.1.1.1"
DstPort = "1234"
END

BEGIN "Input"
FilesPath = "/mnt/grave/drive_d/replace/VIDEO_TS"
ProgramCount = "1"
END

BEGIN "1"
Name = "DVD"
FileName = "/mnt/grave/drive_d/001.mpg"
Type = "Mpeg2-PS"
END

BEGIN "LaunchOnStartUp"
# command1 = "start DVD client1 local1 --rtp"
command1 = "start DVD multicast local1 --loop"
----


Thanks a lot in advance.
Jarod.