The ID 1425146439626235904 likely refers to the original or the internal Media ID for that post. Because this is a private file identifier rather than a public title or description, I can't determine the content of the video without more context.
If you can describe or provide the original link to the post where it was found, I’d be happy to help you put together a piece covering it. 1425146439626235904_ef1RL9zQh_tIXBag.mp4