The ".mp4" extension indicates that the file uses a standard developed by the Moving Pictures Experts Group (MPEG).
: MP4 files provide high quality with low file sizes , making them ideal for web streaming and mobile devices. SDJS-129.mp4
: While MP4 is the "container" (the box that holds the data), it often uses the H.264 or H.265 "codec" to compress the actual video content. How to Access and Use SDJS-129.mp4