Ultra XviD joiner currently is the best XviD joiner, which can join XviD video files perfectly. with this XviD joiner, you can also join XviD with other video formats together,such as join MPEG, AVI, RM, MP4 with XviD, this XviD file joiner also support join video files to VCD/SVCD/DVD image files, and then you burn them into your VCD/SVCD/DVD disk. with this XviD joiner you can even convert video files to other video formats you want.
Guide: How to use XviD Video Joiner xvid file joiner Step 1: 
Free download XviD Joiner and install it on your computer.
Step 2:Click 
Button to select the XviD file you want to join
Step 3: Edit the source XviD video files, if you like.
Click on the source file you want to edit, then click
button to edit the selected file, you can set the start time and the end time, as the following picture :
Step 4: Sepcify the directory for output files by clicking the 'Change...' button, or just use the default directory (Note: after successful join, pls click Open button to find where the file stored, if u try to find the converted file via other way, you may can not see the joined file)
Step 5: Sepcify other settings for advanced user, you can set output quality, frame rate, TV type, Aspect Ratio, Add letterbox and so on.
Step 6: Click
Button to join the XviD video files.
After successful join XviD video files, the joined video files shall be stored in the folder you have previously selected. Download free version of Xvid joiner.
Convinced? 
Buy full version $25 now.