Look for the page you were visiting right before or at the time you saw this filename.
If you have a URL containing this string, the domain (like v.redd.it or discordapp.net ) will reveal the platform it came from. 0hbbw5sfm8p69t771w868_source.mp4
Files shared across these platforms are often renamed to long alphanumeric strings to avoid filename conflicts. To find the "story" behind it, you can try: Look for the page you were visiting right
If you can play the video, describe the key visual elements (e.g., "orange cat jumping off a fridge" or "indie game trailer with pixel art"). describe the key visual elements (e.g.