5e73c93e3bfd7d7bf07cf_source.mp4.mp4 -

If a program is specifically asking for this exact filename and crashing:

Where did you find this file (e.g., a specific game folder, a website, or a video editor)? 5e73c93e3bfd7d7bf07cf_source.mp4.mp4

Ensure you haven't manually renamed it. The software is looking for that exact string of characters. If a program is specifically asking for this

If this is from a downloaded mod or game, re-download the specific "Assets" or "Resources" pack, as hashed files are easily corrupted during transfer. To help you further, could you tell me: a specific game folder

Use AssetStudio if the file is part of a Unity .bundle or .assets pack.