It’s possible for the duration of the video to be tagged with video schema markup, which means that the length of your video will be displayed in search results. We only advise tagging the duration value if your video is kept fairly short as it’s likely to attract more viewers when it doesn’t appear too time-consuming to watch. If the duration tag is appearing in search engines and you have a short and snappy video, you’ll almost certainly get more views, especially if the search query is question-related; no one wants a long and convoluted answer to a simple question. If you’re displaying a video that contains the same information as your competitors but yours is shown clearly as being shorter, you’re onto a winner. In a nutshell, tagging the duration value is worth doing if you have a well-informed video that isn’t too long.