-as of [29 SEPTEMBER 2024]–
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*MOVING PICTURES EXPERTS GROUP 4 AUDIO*
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*’file extension for *MPEG-4 PART 14**
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While the only filename extension defined by the standard is .mp4, various filename extensions are commonly used to indicate intended content
MPEG-4 files with audio and video generally use the standard .mp4 extension.
Audio-only MPEG-4 files generally have a .m4a extension.
This is especially true of unprotected content
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*MPEG-4 files with audio streams encrypted by ‘FairPlay Digital Rights Management’ as were sold through the iTunes Store use the ‘.m4p extension’*
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iTunes Plus tracks, that the iTunes Store currently sells, are unencrypted and use .m4a accordingly.
Audiobook and podcast files, which also contain metadata including chapter markers, images, and hyperlinks, can use the extension .m4a, but more commonly use the .m4b extension.
The Apple iPhone uses MPEG-4 audio for its ringtones but uses the .m4r extension rather than the .m4a extension.
Raw MPEG-4 Visual bitstreams are named .m4v but this extension is also sometimes used for video in MP4 container format
Mobile phones use 3GP, an implementation of MPEG-4 Part 12 (a.k.a. MPEG-4/JPEG2000 ISO Base Media file format), similar to MP4.
It uses .3gp and .3g2 extensions.
These files also store non-MPEG-4 data (H.263, AMR, TX3G).
In practice, most (if not all) low end phones and feature phones record in this format, as most (if not all) other mobile phones and smartphones record MP4 files using the .mp4 file extension, and some high end phones[which?] can record in .raw
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*👨🔬🕵️♀️🙇♀️*SKETCHES*🙇♂️👩🔬🕵️♂️*
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👈👈👈☜*“AUDIO FILE FORMATS”* ☞ 👉👉👉
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥