Help! errors in CAPTURED UDP stream that I know is perfectly clean of errors

[Roni Peleg <Roni.Peleg () bigbandnet com>]

Hi Wiresharkers,

I'm a newbie so please pardon me if I describe my problem clumsily.

Attached is a picture of the way I capture a file.

I do the next:

1. I inject a perfectly clean MPEG stream over UDP  into a PC with Ethernet 1Gigabit interface network card.
   (I know it's clean for sure, and anyway I also checked by some reliable testing tools such as StreamXpert running on 
the same PC, connected to the same interface port)
2. I close all windows, no program is running on the PC. The UDP stream continues flowing in all the time.
3. I open Wireshark, set a capture-file and start recording (I tried with and without filtering only the relevant IP).
4. From the resulting capture-file I'm striping the MPEG stream out of the UDP encapsulation. (did this a hundred 
times, it's 100% reliable)
5. in the resulting MPEG stream I get "Continuity-Counter Errors" which means packets were lost or mixed with another 
stream.
6. Actually, instead of steps 4-5 I later on simply ran Wireshark's MPEG-TS-checker and indeed the Wireshark itself 
reported the same  CC Errors!

Have you ever encountered such a problem?
Could it be that Wireshark is too weak to record a ~50Mbps stream into a capture file?
What should I do??


Thanks in advance,
Roni

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