What Is M4A.pdf

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What Is M4A? M4A vs MP3, Is
M4A Better than MP3 or Not?
This page focuses on what is M4A on earth, M4A vs MP3 comparison, and differences
between M4A and MP3.
Q: What is an M4A file? What's the difference between M4A and MP3? --- from Yahoo
Answers
People are easily confused with some common audio formats, especially have confusion
about M4A and MP3 audio. Actually, audio file formats can be divided into three major
groups: Uncompressed audio formats, like WAV; Lossless compression audio formats, such
as FLAC, ALAC, WMA Lossless; Lossy compression formats, incl. MP3, AAC, WMA Lossy,
Vorbis. In this article, we will mainly introduce you the increasingly popular audio format
M4A, including what is M4A format; M4A vs MP3 comparison, which one is better; as well
as how to convert video to M4A audio with a professional video to audio converter.
What Is M4A Definition of M4A
M4A is an audio-only MPEG-4 file. The official extension of MPEG-4 file is MP4 which
contains both video and audio data, but when it only contains audio, then it uses the M4A
file extension. M4A format is widely used by Apple for unprotected music downloaded from
their iTunes Music Store (DRM protected music uses M4P extension). Audio within the m4a
file extension is typically encoded with AAC lossy compression, though lossless ALAC may
also be used. In general, compared with MP3, the quality of M4A is better and its file size is
smaller than MP3 file.
Advantages and Disadvantages of M4A Format
Advantages:
- M4A file is compressed while with lossless quality, which means you get smaller file with
original quality.
- M4A audio can be set as iPhone Ringtone directly just by renaming the file extension from
M4A to M4R.
- As the M4A audio file is not protected, so it can be easily streamed or distributed with no
licenses or payments.
Disadvantages:
- Poor compatibility: developed by Apple Inc., M4A is mainly applied to iTunes, iPod and
other Apple devices and can’t be widely played on many other popular devices.
What Players and Devices Can Open and Play A M4A File?
iPod, iPhone, iPad and other Apple devices; media players like Apple's own products
iTunes, Quicktime; and some other limited M4A players also can play M4A files including
Windows Media Player, BlazeDVD, 5KPlayer, VLC, Roxio Creator, KSP Sound Player, etc
M4A vs MP3: Which One Is Better?
M4A vs MP3: M4A is generally regarded as the successor to MP3 but compared with MP3,
M4A can compress audio with the same bit rate in smaller file size. M4A format files
typically have stereo bit rate of 128kbps, 192 kbps or 256kbps. By the way, Bit rate is the
amount of data that is conveyed per unit of time.
In the aspect of quality, an M4A file with ALAC codec has the best original sound quality.
Even M4A (AAC) delivers better quality than MP3 audio at the same bit rate. As for the file
size, it is also related to the bit rate, the larger bit rate, the larger file size, the better sound
quality. To put it another way, if you try to get the same sound quality, you need 256kbps bit
rate when encoding with MP3 while only need 192kbps with M4A, as a result, you'll get a
much smaller audio file size with M4A. However, MP3 is still the most popular audio format
thanks to its much better compatibility.
It's arbitrary to say that M4A is better than MP3, choosing which audio format still depends
on your own needs.
Easiest Way to Convert Video to M4A, MP3 and Other Audio Formats
For Apple fans, you may favor M4A file and choose to convert video to M4A, but for those
who want to play audio on Android Samsung, HTC, etc. may want to convert video to more
friendly audio formats like MP3. An all-in-one video converter Blaze Video Magic
Ultimate can extract audio from videos/movies in various audio formats, enabling you
to convert MKV, H.265, AVCHD, AVI, WMV, MOV, MP4, etc. to M4A (AAC), iPhone Ringtone,
MP3, AC3, FLAC, ALAC, WMA, WAV, etc. at fastest speed for easier playback on PC, Mac,
iPhone 6S/6, iPad, iPod, Android Samsung and other mobile devices.
Free download, install and launch this audio extractor on your PC/Mac (free download Mac
version), then follow the 3 steps below to extract audio from video easily.
Step 1: Click "+ Video" to load source video stored on hard drive.
Step 2: Select AAC (M4A), MP3, iPhone Ringtone or other audio files as the output profile.
You can adjust the audio parameters before converting.
Step 3: Click "Browse" button to specify a destination folder to store the extracted audio file.
Tap "RUN" to start to convert video to audio.
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