12273_720p.mp4 -

The "720p" tag indicates a High Definition (HD) resolution of 1280 x 720 pixels .

Files with this specific naming structure (ID number followed by resolution) are frequently associated with: 12273_720p.mp4

This uses the MPEG-4 Part 14 container, the most universally compatible video format available. The "720p" tag indicates a High Definition (HD)