Video_2021-07-18_12-17-40_mp4 -

A typical video should be several megabytes. If it's tiny (under 100KB) but ends in .mp4 , it could be a masked script.

This exact naming format ( video_YYYY-MM-DD_HH-MM-SS.mp4 ) is the default for videos saved from Telegram . video_2021-07-18_12-17-40_mp4

Look for landmarks, street signs, or language on posters within the video to narrow down the geographic location. 3. Safety Warning If you received this file from an unknown source: A typical video should be several megabytes