Simply double-click the file to open it in QuickTime Player .
Where did you , and are you having a specific problem playing it ? Add an MP4 File as a Step - Guidde Help Center VID_20220829_214955_417.mp4
You can right-click the file in File Explorer and select "Open with" to choose Windows Media Player or the Movies & TV app. Simply double-click the file to open it in QuickTime Player
If the file is "unplayable," online repair tools or software like Handbrake can sometimes re-encode and fix header errors in the file. 3. Editing and Organizing VID_20220829_214955_417.mp4