To view the video associated with this ID, you can try appending the ID to Reddit's video domain. Note that these links often expire or require the original post to be active: https://redd.it
If you have the URL of the Reddit post containing this video and want to save it:
Because this is a unique ID for a single piece of user-generated content, there is no general "guide" for it. However, if you are looking to access or manage this specific file, here is how you can proceed: Finding the Video