joining divx .avi's

[m6a]

i joined 3 avi files that were 272,504KB a piece about 800MB. i used virtual dub to join these files and made sure both the audio and video were set to direct stream copy. my problem is that the file produced is 1,051,316KB. why did my file come out so big? what can i do to get this divx.avi to a dvdr?

thanx

[UncasMS]

sorry, it is still unclear how big all three pieces were, but maybe you could try joining two pieces to one file first and then re-use this already bigger file with your file number three?

[m6a]

i already figured it out. thanx for your help!