If the file claims to be .mp4 but your computer says it's .exe – do not open it .
: Once downloaded, you can check the file's properties on Windows by right-clicking the file, selecting Properties , and viewing the Details tab to see if the metadata (length, frame rate, etc.) matches a standard 400MB video file. Technical Analysis Tools
Downloading a file without permission may violate copyright laws, even if it's freely visible online.
