Video site map help search engine to show your videos in search results. More than 213 million searches happen on Google daily and Google get more than 38% searches for videos in a single day. If your website have videos related to your services, products they can appear on search results with the help of video site map.
Video site map help the search engines to index your video easily which turns to more visibility on search engines. For more visibility of your videos you can do the video search engine optimization of your videos. VSEO include creation of Title, Description, Video play page url, Thumbnail url and url of your raw video file for each video.
After creating video site map, submit it in Google web master central. With the help of video site map you can make your video more crawable to search engines, which will help to display your video in Google search results.