How to join two videos on YouTube and publishing it (July 2016) 

This video describes how to merge two videos right on your RU-vid account and publish it. You don't need any external video processing software to do this. RU-vid gives such advanced features right on website. Below are steps to do it
1. Upload your videos
2. Go to your Video Manager
3. Click Edit on the video which you want to merge with
4. Click Enhancements option on top
5. Click Try RU-vid Video Editor
6. Add the videos in the sequencer below
7. Give some name to your newly merged video
8. Publish the video