Facebook does offer a great way for the public to share our favorite, personal, or interesting videos with a wide variety of your friends. To upload videos on Facebook is very easy. But there can be some trouble uploading a video on Face book. Chances can be that your video is in a format that Facebook doesn’t support, your video is too large, and you are not using the latest version of browser.
Facebook supports the typical video formats – mov (Quicktime), avi, wmv (Windows Media) – and many, many more.
Step One
Sign in your Facebook home page if you have got one already. And then click "News Feed".
Step Two
Click "Add Photos/Video" and then"Upload Photos/Video". Select a video from the native folder on your computer.
Step Three
Click "Post" to start upload the video. Once your video is completely uploaded, you'll get a notification and you can tag your friends. If it's taking longer than a few hours to add a video to Facebook, please report a problem.
Step Four
If you are uploading a video in the format incompatible with Facebook, you need to convert the video to a format that Facebook supports. For instance, if you attempt to upload RMVB, RM, MXF, or XAVC file to Facebook, you can first convert them to MP4 before uploading them. To do the conversion, we recommend you the iOrgSoft Video Converter (Video Converter Mac ). It supports a large amount of video formats including regular and HD videos. You'll easily solve the unsupported video format problem to Facebook with the program.
https://letsfixit.co.uk/141494/how-to-upload-video-to-facebook-2/