MPEG-4 Part 14 - Wikipedia
MPEG-4 Part 14 or MP4 is a digital multimedia container format most commonly used to store video and audio, but it can also be used to store other data such as subtitles and still images. Like most modern container formats, it allows streaming over the Internet.The only official filename extension for MPEG-4 Part 14 files is .mp4.MPEG-4 Part 14 …