Side Shot reversed image

Check your editing software effects for flip horizontal.

Most camera app does not have flip options. Very few do. One thing you can do it use an vide edit app to flip it. Most video apps will have the flip options. 

If you are using an iPhone camera with the side shot then the new iOS photo editing feature can flip the video. Here is how. 

Adobe pro premier...got to effects / video effects / transform / horizontal flip