If you can of the video (who is in it, what happens, any visible watermarks), I can help you track down the source.
That specific filename appears to be a often used by social media platforms or content delivery networks (like Instagram, TikTok, or Reddit) when a video is downloaded or cached [1].
: If you remember any text, music, or the creator's name from the video, searching those details is usually more effective than the filename.