10.mp4.7z

: Once extracted, you will see a file named "10.mp4" which you can play with any standard media player. Alternative Methods

Do you have of the file, or is it just this single archive? 10.mp4.7z

: If you cannot install software, use an online extractor like ezyZip to upload and unzip the file in your browser. : Once extracted, you will see a file named "10