: This indicates the vertical resolution of the video. It represents "High Definition" (HD) with 1,280 x 720 pixels.
If you have encountered this file in an unexpected location, such as an email attachment or a random folder on your computer, exercise caution: KxrvR5vE_720p.mp4
Files named in this manner are rarely created manually by users. They usually appear in the following scenarios: : This indicates the vertical resolution of the video