Since the filename is an internal server ID, there isn't a public "directory" to look it up. However, you can try these steps to find the original post:
If you can take a screenshot of a clear frame from the video, use Google Lens or TinEye to find the original thread.
The filename is a unique identifier typically generated by Reddit's video hosting service (v.redd.it) .
If you recently downloaded it, check your Reddit "History" or "Saved" tabs in your profile.
When you download a video directly from Reddit's servers or use certain third-party downloaders, it retains this alphanumeric "source" string as the filename. How to identify the content
Paste 0h8axkjfx83onf4nz4skv into the Reddit search bar or Google. If the post was popular, it may appear in search results or archives.
