What Is MP4? The Distinction Between MP3 and MP4


MP4 information are only a newer and higher model of MP3 information, proper?


Nicely, no.

That single-digit distinction may give the impression that they’re more-or-less the identical factor, however nothing may very well be farther from the reality. They every have distinct makes use of, histories, and benefits; MP3 and MP4 will not be two editions of the identical factor.

On this article, we’ll clarify among the key variations that everybody ought to learn about. By the point you’ve got completed studying, you may know precisely which file sort is correct in your wants.


Understanding MPEG

However earlier than we dive into the variations, it is necessary to know the place the 2 file varieties originated.

MP3 is brief for MPEG-1 Audio Layer 3. It was one in all two codecs that have been thought of for the MPEG audio customary again within the early-Nineteen Nineties. Electronics agency Philips, French analysis institute CCETT, and Germany’s Institute for Broadcast Expertise backed the format because of its simplicity, lack of errors, and computational effectivity.

The choice was reached in 1991, and MP3 information entered the general public area in 1993.

MP4 stands for MPEG-4 Half 14. This know-how relies on Apple’s QuickTime MOV format however provides help for varied different MPEG options. The file sort was first launched in 2001, but it surely’s the 2003 re-release that is now generally used if you see MP4 information. There have been no additional updates to the format since 2003.

Probably the most basic distinction between MP3 and MP4 is the kind of information they retailer.

MP3 information can solely be used for audio, whereas MP4 information can retailer audio, video, nonetheless pictures, subtitles, and textual content. In technical phrases, MP3 is an “audio coding” format whereas MP4 is a “digital multimedia container” format.

MP3: The King of Audio

As a result of they’re so good at storing audio, MP3 information have turn out to be the de facto customary audio format for music software program, digital audio gamers, and music streaming websites. Regardless of which working system or machine you personal, you might be assured MP3s will work proper out of the field with out a hitch. It is why MP3 gamers may nonetheless be price shopping for.

The principle motive they’re so well-liked is the way in which the file sort works. MP3s use lossy compression, which vastly reduces the dimensions of an audio file whereas barely affecting its high quality. The method works by stripping out all the information past the common particular person’s listening to vary, then compressing the remainder as effectively as doable.

MP3s additionally permits customers to steadiness the trade-off between audio high quality and file dimension. Should you’re an audiophile, you possibly can go for bigger file sizes with greater bitrates and higher audio high quality. Then again, if you wish to squeeze as a lot music as doable onto your transportable machine, you possibly can scale back the file dimension and audio high quality accordingly.

Moreover, MP3s will all the time be smaller than equal MP4 information. So, in case your audio participant or smartphone is getting full, it’s best to convert any audio saved as MP4 into MP3 format. Word that you could be take a success to audio high quality within the course of!

MP4: Extra Makes use of, Extra Flexibility

MP4 information are “containers”—as a substitute of storing the code for the file, they retailer the information. As such, MP4 information shouldn’t have a local means of dealing with the coding of the file. To find out how the coding and compression can be dealt with, they depend on particular codecs.

There are a whole lot of codecs on the market at the moment, however not many will work with mainstream MP4 gamers. To ensure that a participant to have the ability to learn and play an MP4 file, it will need to have the identical codec itself. Probably the most widely-supported codecs are:

  • Video—MPEG-4 Half 10 (H.264) and MPEG-4 Half 2.
  • Audio—AAC, ALS, SLS, TTSI, MP3, and ALAC.
  • Subtitles—MPEG-4 Timed Textual content.

These codecs give MP4s much more flexibility than MP3. For instance, M4A information (that are MP4 information that solely comprise audio) can deal with each Superior Audio Coding (AAC) and Apple Lossless Audio Coding (ALAC). The selection of high quality resides with the consumer. Both means, the file will seem as an MP4 file, however the information throughout the file will differ vastly.

In addition to audio, MP4 information also can comprise video, pictures, and textual content. You will typically see varied file extensions that give a sign of the kind of information throughout the container. Listed here are among the most typical:

  • MP4—The one official extension.
  • M4A—Non-protected audio.
  • M4P—Audio encrypted by FairPlay Digital Rights Administration.
  • M4B—Audiobooks and podcasts.
  • M4V—MPEG-4 Visible bitstreams.

Each MP3 and MP4 information help metadata. With out it, it might be unattainable to successfully use music participant apps (like iTunes) or house media servers (like Plex).

MP3 information use ID3 tags. They permit info akin to tune title, artist, album, observe quantity, and even album art work to be saved throughout the file itself. The tags are saved on the finish of the file’s code—their content material is both extracted by decoders or ignored as junk non-MP3 information. You may edit these tags utilizing the favored Mp3tag.

Different pertinent info, akin to ReplayGain information or DRM restrictions, can be saved throughout the metadata.

MP4 information can implement metadata in the identical means as MP3s, however additionally they introduce the Extensible Metadata Platform (XMP). XMP metadata is well-suited for MP4’s container format because of its compatibility with an unlimited variety of file varieties, together with PDF, JPEG, GIF, PNG, HTML, TIFF, Adobe Illustrator, PSD, WAV, and PostScript.

MP3 and MP4 in a Nutshell

We have tried to offer you a balanced perception into the 2 file varieties with out being too technical, and we hope you’ve got now received a clearer understanding of the 2 codecs.

In abstract, when you’re saving audio to be used on transportable gamers, it’s best to look to MP3. If you wish to save video, otherwise you wish to stream your content material over the web, it’s best to use MP4. MP4 does work for audio information, however it isn’t probably the most optimum answer.

Picture Credit score: Antonio Guillem through Shutterstock

Initially written by Mike Fagan on December 8, 2009



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