S.O.S problems while joining

[eagle101]

Help I'm having problems joining two avi files using virtual dub.

I try to join them but it says they have a different frame rate one been 15.00128 and the other been 15.00105. So i have opened the second avi file and gone into video-frame rate and put in the other frame rate and then saved. But when I come then to join the first part with this new avi file it comes up with the following message.

Cannot Append Segments: The video streams have different data formats

Can anyone tell me what im doing wrong so i can join them.

[secretagent]

open in vdub, go to file menu the check file information on each one. it will tell you what type of video you have. if they are different, save one to the others form, when you sav as make sure you check video from the file menu and compression like divx 5.02, cinepak or whatever you want to match the files as