To begin, compose a post in the Social Tool by clicking the "Compose" button in the top left corner:

Click "Add Media", and drag and drop your MP4 video file in the upload window, or, click "Choose an Image or Video to Upload":

Your video should populate under the "Media" section below the Content box. On the right hand side, you can see your video preview for LinkedIn:

Please make sure to adhere to the following video file size specifications:

Now you're ready to post! Hit "Post now" or schedule your post for later. Not quite ready? Click "Save draft" and edit it under My Posts > Drafts.