Udp streaming with some contamination

[triplebit]

I stream UDP video (including audio) packets with some other tool (WinPcap library) from one PC to another receiver PC. In the receiver PC I run VLC that receives and displays the video-usually fine.
Problem is that this tool makes some mistakes from time to time and streams in addition to the video packets some strange packets which probably spoil a little the stream.
My questions:
1. What is the expected behavior of VLC player when the stream that it receives is spoiled, as in this case, with some extra packets?
1. IS there some "Reset" packets that I can use to initialize the VLC player after these extra packets arrive?
1. Since I can filter the packets before streaming them I would like to know if there is any runic characteristics to UDP stream which I can filter to eliminate the streaming of these extra packets?
Regards
Kishon

[Rémi Denis-Courmont]

1. Depends on the upper layer protocol.
1. Depends on the upper layer protocol.
1. Depends on the upper layer protocol.