Right-click the file (on Windows) or "Get Info" (on Mac) to see if there is a "Title" or "Author" tag.
Greek Philosophical Vocabulary Guide | PDF | Aristotle - Scribd О†ПЂО№ПѓП„ОїП‚ 138 ОІ.mp4
Filenames ending in .mp4 with specific numbering (like 138 b ) are typical of private archives, lecture series, or niche YouTube uploads. If this file was found in a specific folder or database, "138" might simply be an index number in a larger collection of Greek-language content. How to Identify the Content Right-click the file (on Windows) or "Get Info"