Joining software for AVI files


Standard Member
I have been trying to use VirtualDub for appending segments as I have 7 AVI files to join, yet I keep getting this error code:

Mismatch detected in opaque code data at byte 21 of the format data

If it's not possible to append these segments, can someone please recommend a program I can use that will do the job for me.

Thanks for your time and input.


I would suggest trying Windows Movie Maker (comes free with XP & Vista).
Just drop the individual .AVI files onto the timeline in the order you want them. Then output to a single .AVI file - simple!
If you need any help & advice on using Movie Maker then have a look Here.


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