If you can take a clear screenshot of a frame from the video, you can upload it to Google Lens or Yandex Images . This is often the fastest way to find the original post or creator. If you can take a clear screenshot of

Knowing the source would help me give you a much more specific answer. 0h2ehpyr94nik4d1oxbqn_source.mp4

if you aren't sure of the source. While .mp4 files are generally safe, they can occasionally be used in "pixel-stripping" or "polyglot" attacks to execute malicious code if your media player has an unpatched vulnerability.