avi file is distorted

[smellae]

i combined 2 halfs of a movie into one avi file. both files played fine but after i combined them, the picture is all distorted and just garbled. it is a divx/xvid avi file. i deleted the two files before i checked the one combined file and now i'm out of luck. i have tried numerous things to try and get the video back to normal but can't find a way. if anyone has any suggestions please fell free.

[Baldrick]

open the avi with virtuladub, does the preview look okey?

[smellae]

i'll open it with the play button I and it will say, 'No audio decompressor could be found to decompress the source audio format. (source format tag: 2000)' then i would press the play button O and the picture will still be all distorted.