Combining avi files in virtualdub mod

[buckethead]

I save files as uncompressed rgb in tmpgenc express 4.0. I then divide into pieces for processing in virtualdubmod and save as avi files. To recombine these files back into a single file, do I just open them up again in vdubmod, append them and save as an avi file, or does this cause another reencoding to happen? If this is not a lossless process, how can I do this ?

[Baldrick]

Choose video->direct stream copy and there will be no reencoding.

[buckethead]

Thanks Baldrick. The more I ask, the more I learn !!