What is the main purpose of the MP4 format?

• A. A lossless format for archiving.
• B. A format that cannot be streamed.
• C. A format only used for audio.
• D. A compressed format that provides good quality for fast downloading and streaming.

Answer: (D)

MP4 is a multimedia container format that stores video and audio streams in a compact form using compression. Its main purpose is to make media easy to distribute over networks by reducing file sizes while keeping good quality, which supports fast downloading and smooth streaming. It’s not limited to audio and can include video, subtitles, and metadata. While lossless options exist, MP4 typically uses lossy compression to maximize efficiency for online delivery. Because of broad support across devices and platforms, MP4 became the standard choice for online video delivery, balancing compatibility with efficient streaming.