Transfer videos back to camera?

-I recently got back from a trip and I have ton's of videos from it. I copied all the videos onto my camera. I started to watch them and I found a few videos that were only a couple seconds long so I thought that I should delete them off my camera so it would give me more room on my memory card. My camera was still attached via usb so I went to the folder that had the videos and put my mouse over the one I wanted to delete and right clicked and hit delete. I didnt realize that all the videos were still selected so I ended up deleting all the videos off my camera. Luckily I copied them to my computer before so is there anyway I can put them back on my camera? I tried copying and pasting but it didnt work. I have a Canon Power Shot SX110IS