(256) Mp4 — Dod

It might refer to SHA-256, a security hash used to verify that a video file hasn't been tampered with.

In many online communities, specifically on platforms like Discord or Telegram, files named with variations like "Dod" or specific numbers are often: Short, high-energy, or surreal meme videos. Dod (256) mp4

"Dod" is used as a shorthand for "Download" or "Documented." It might refer to SHA-256, a security hash

Files are automatically renamed by a downloader or uploader script. It might refer to SHA-256

Videos designed to crash a specific version of a player or app as a prank.

It could represent a 256kbps audio or video bitrate, often used for standard-quality mobile streaming.

If the "(256)" refers to technical metadata rather than a filename: