: If you saved a video to your phone or PC from these apps, they often generate names starting with an underscore followed by a 13+ digit ID.
If the file won't play, it may be corrupted or only partially downloaded. You can try using an online MP4 converter to "repair" the container by converting it to another format like MOV or AVI. _3975328440116.mp4
: Open your Photos or Gallery app; the video should appear in your "Downloads" or "Camera" folder. : If you saved a video to your
Since this is a standard MP4 file, you can view it using any modern media player: _3975328440116.mp4