YouTube video views reflect how many times a video has been watched, and can be an important measure of a video’s overall popularity.
We want to make sure that videos are being viewed by actual humans and not computer programs. During the first couple of hours after a video has been published, we’ll only show views that our systems believe to be valid. This might not yet show all legitimate views at that time.
After quality views are counted, view count updates more frequently. The process of including all quality views can take some time depending on a video’s popularity and viewership. Afterward, the view count updates more frequently, but keep in mind that we’re constantly validating views, so view count can always be adjusted