How do I put two videos together side by side?

 I have two digital video clips that  are the same duration and would like them to play side by side on the same screen at the same time. What program would allow me to do this?  

yhzisel6 years ago
I know how to put different video to one video( this should thanks my iFunia video converter, I usually use it to convert my video, in the while, I can use this program to trim, crop, merge, watermark video clips and adjust video effects.
but not play at the same time.
Hope helpful
Bartboy8 years ago
VLC and Quicktime, and Ishowyou. Problem:
Running 3 programs (especially Ishowyou) WILL slow down the videos.