: The container format, typically using the H.264 codec, which is highly compatible with nearly all modern devices and web platforms like YouTube. Recommended "Proper" Use

: Likely indicates the project name and date (November 13th).

If you are looking for the "proper" way to handle this file:

: Refers to a resolution of 1280 x 720 pixels , a standard High Definition format.

: Indicates a frame rate of 25 frames per second (fps) , which is the standard for PAL regions (Europe, Australia, etc.) and many film-style digital projects.

: Use this specific file for checking timing or content, not for final delivery. The "LOW" tag indicates it lacks the visual fidelity for high-end viewing.

Based on the technical file name provided, the most "proper" feature or interpretation of this file is likely as a intended for preview or specific device compatibility.