If this is a request for the "text" contained within the metadata of such a file, it would typically include: 1080p / 720p (often degraded for effect). Encoding: H.264.
If you are looking for a descriptive text to accompany a video with this title, Post No.150.mp4
In many internet "lost media" or analog horror tropes, a file named "Post No.150.mp4" might represent: If this is a request for the "text"