There are multiple ways to combine or join two video.
mencoder
These methods using mencoder should work with any file type. they have been tested for avi and mpg files
Method 1
- mencoder -oac copy -ovc copy file1 file2 file3 … -o final_movie.mpg
Method 2
- cat file1 file2 file3 ... > final_movie.mpg
- mencoder -forceidx -oac copy -ovc copy final_movie.mpg -o final_movie.mpg
References
- http://www.arsgeek.com/?p=435 How to join multiple .avi or .mpg files]