As we all know that Facebook is one of the most popular social media platforms. People like to share their daily life on it via words and photos. Recently, due to smartphones have been widely used, people can take a photo or video handily. Then Facebook adds an option for users to share contents with a video. However, some users are facing various troubles to upload video to Facebook. Here we will show you how to use a mobile phone and a computer to post a video on Facebook. Also, we will introduce how to upload an incompatible video to Facebook.