Use a stable filename to identify a product, concept, opening, language, format and version. Keep approval status and results in a shared register, where they can change without changing the file identity.
Choose a few fields with a clear meaning
A hypothetical filename is bottle01-lid-demo-en-9x16-v03.mp4. Define each field in a short guide. Connect the file's stable ID to the platform ad ID after upload. Naming supports analysis but does not establish sales attribution.
Keep status out of the filename
"Winner" and "approved" can go out of date. Record status and results in the shared register instead, together with who approved the file, which ad used it and where the original is. The register can be an ordinary spreadsheet if that covers your needs.
A finished file keeps its version number. When the text or picture changes, create a new version. Never overwrite a file that a report already names, or the team may end up analysing a different ad from the one the report describes.
