MP4

📚 Key Takeaways:

📌 What is MP4? MP4, abbreviated for MPEG-4 Part 14, is a digital file container format that can hold video, audio, subtitles, and other data in a single file. Files in this format generally come with the .mp4 extension. However, depending on the type of content hosted, other extensions may be used, such as .m4a for audio-only or .m4p for DRM-protected audio.

📌 What is MP4 file format used for? MP4 is now the most popular video format that you can use for file storage, transferring, streaming, post-production, video recording, and more. It is supported by many applications, platforms, and devices.

📌 Is MPEG-4 the same as MP4? No, they are not the same, although MPEG-4 and MP4 can be used interchangeably sometimes when referring an MP4 file. MPEG-4 refers to a compression method of the MPEG group, while MP4 is a digital container format defined as MPEG-4 Part 14, which is part of MPEG-4 standard.

To learn more details about MP4, or more technically MPEG-4 Part 14, check out the table below. It gives you a thorough overview of the MP4 file format.

Overview Table of the MP4 Video Format

Category	Details
File Format	MP4
Full Name	MPEG-4 Part 14
Media Type	Video/Audio
Format Type	Container format
File Extension	.mp4 Other MP4 format-related extensions include: .m4a for audio-only MPEG-4 files .m4v for raw MPEG-4 Visual bitstreams .m4p for audio streams encrypted by DRM from iTunes Store .m4b (or .m4a) for audiobook and podcast files .m4r for iPhone ringtone .3gp or .3g2 for storing audio and video data on mobile phones
License Fee	MP4 itself does not require a license fee
Developed by	Moving Picture Experts Group (MPEG)
Initial Release	Standardized in 2001
History	MP4 (MPEG-4 Part 14), developed by the Moving Picture Experts Group (MPEG) largely based on Apple’s QuickTime file format (.MOV), was officially released and standardized by the ISO/IEC as part of the MPEG-4 framework in 2001.
Features	▪ Lossy compression ▪ Maintain high quality with small size ▪ Support a wide range of codecs ▪ Host video, audio, subtitles, images, and other data ▪ Excellent compatibility
Video Codecs	H.264, H.265, MPEG-4 Part 2, VP9, AV1, etc.1
Audio Codecs	AAC, MP3, Opus, AC-3 (Dolby Digital), ALAC, MPEG-4 ALS, etc.
Uses	A universal format for sharing and streaming media

References: https://en.wikipedia.org/wiki/MP4_file_format#Filename_extensions

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