The most logical interpretation is the year 2005. This implies nostalgia for the early Web 1.5/Web 2.0 era—the time of flash videos, LimeWire, and Nokia ringtones. Alternatively, it could be an episode or part number (Part 05).
For those interested in the "Galician" aspect of the query, it is a language spoken by approximately 2.4 million people. Content creators often use snippets of the language in "polyglot" challenges or linguistic comparison videos, which may be the source of the original "mp4" file you are referencing. translated lyrics from a Galician video? VLC media player - App Store the galician gotta 05 mp4 new
However, based on the components of your request, here is a creative piece that blends the essence of Galician culture with the vibe of a "new .mp4" digital discovery: The Galician Pulse: Fragment 05 The file was simply titled galician_gotta_05_new.mp4 The most logical interpretation is the year 2005