: It provides a specific set of procedures and test sequences to verify that bitstreams (video/audio data) and decoders meet official requirements.
: MP4 files can store images, subtitles, and chapter markers directly within the container. 38184mp4
If you are actually referring to a generic , the most "useful features" include: : It provides a specific set of procedures
: It is the most widely supported format for streaming on platforms like YouTube and viewing on mobile devices. a set-top box
: The standard includes methods for identifying and reducing coding artifacts, such as "blockiness" in low-quality video.
: By using this standard, developers ensure that a video file created on one system will play correctly on another (e.g., a set-top box, a computer, or a smartphone).