Login to your Facebook account
Now at the top of your status bar you will find Add photos or video just click it.
Then you will have to tap upload button it is located at the left side.
On your file Manager choose the video or image you will like to upload but remember this tutorial is ment for video.
Now add some little writings to your video in the place that is labelled say something.
Then click on post and that all you need to do.
Don't forget to drop your comment below thanks.