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Questions tagged [m4a]

M4A is a file extension for an audio file encoded with advanced audio coding (AAC) which is a lossy compression. It stands for MPEG 4 Audio. They're most often found in Apple's iTunes Store as the format of song downloads.

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Can Apple Music on macOS display synchronized lyrics embedded in MP3 or AAC (M4A) audio files?

Or does this work only when being online by sideloading the lyrics from the Apple Music subscription service?
porg's user avatar
  • 1,048
0 votes
0 answers
147 views

How to import album into Music without hiccups between songs

I have recorded a concept album in which the tracks all run together. There are no pauses between songs. My mastering engineer has delivered 44.1khz/24-bit WAV files. I imported these into ProTools ...
S. Imp's user avatar
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5 votes
1 answer
10k views

Convert multiple .mp3 files (or single .m4a) into .m4b with ffmpeg and afconvert on macOS

I'm using macOS and have a set of .mp3 files that represent the chapters of an audiobook. I want to combine them into a single .m4b file. How can I do this from command line without significantly ...
TabsNotSpaces's user avatar
0 votes
1 answer
297 views

Convert m4a with cover to mp4

I've a m4a file with cover attached using mp4art; however Youtube doesn't support m4a. Supported formats - https://support.google.com/youtube/troubleshooter/2888402?visit_id=637603848977966877-...
Chaitanya Bapat's user avatar
3 votes
1 answer
264 views

QuickTime Player 10 doubles track duration

My copy of QuickTime (10.5) on Mojave (10.14.6) is duplicating the duration of (some) tracks I open with it. It isn't modifying the files themselves; it's just the track window that displays twice the ...
Rain's user avatar
  • 474
3 votes
1 answer
772 views

Make iTunes recognize MP3 audiobooks with ID3 tag

Apple iTunes recognizes and categorizes MP4 audio files (preferably with an .m4b extension, not .m4a nor .mp4) correctly as audiobooks if the tag field stik MediaType is set to 2 for Audiobook. I ...
Crissov's user avatar
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2 votes
1 answer
17k views

How to set custom m4a format audio file as alarm tone on iPhone

How can a custom audio file (m4a format) be set as my alarm tone on an iPhone? I am using an iPhone 8 running iOS 12.3.
Ciasto piekarz's user avatar
0 votes
1 answer
428 views

iTunes only plays first part of song

I downloaded an album from iTunes Store on my MacBook (macOS 10.13.6). One of the songs, only the first 17 seconds play. Then it jumps to the next song. The total time of the song is displayed ...
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1 answer
39 views

Why can't I Airplay a certain sound file in iTunes?

I have this one file that, when I play music in iTunes using Airplay, always makes iTunes revert to use the computers internal speaker. When this specific track is finished, next track is again ...
d-b's user avatar
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1 vote
0 answers
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How to remove my email address, name, and purchase date from iTunes Plus files?

Any files that you purchase from iTunes (or obtain with iTunes Match) will contain your personal information: Is there a script that automatically goes through all music inside the iTunes Media ...
Baumr's user avatar
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1 vote
2 answers
494 views

Is 128kbps too low-quality a file size for the iPhone 5?

I've got a music collection of lossy M4A files at assorted bitrates that I want to transfer to my iPhone, and in order to conserve space I want to make each track as small as possible while keeping ...
Hashim Aziz's user avatar
4 votes
2 answers
2k views

Can't import m4a files to Audacity

I have installed the latest version of ffmpeg (3.1.2) through homebrew, and I have gone to Preferences -> Libraries and located the ffmpeg library in Audacity (/usr/local/Cellar/ffmpeg/3.0.2/lib/...
DisplayName's user avatar
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5 votes
3 answers
27k views

Why I cannot play M4A audio on iTunes, but I can play it on QuickTime?

I have some M4A audio files, that I can't play on iTunes (e.g. double click the file, and then iTunes fired up, the audio added to the library, but the play doesn't start. Tried double clicking on the ...
Chen Li Yong's user avatar
1 vote
1 answer
1k views

how to convert all mp3 to m4a and save tags and covers?

Strange bugs with iTunes and iphone, when trying to transfer and listen files in mp3. In m4a everything is all right. Is there any way to convert all mp3 files to m4a and save all tags and covers? ...
user179996's user avatar
1 vote
2 answers
4k views

Automate Conversion from m4a to mp3?

I have hundreds of sound effects - clips just a few seconds long each - that are all m4a files. I need to convert them to mp3 files. What's the best way of doing this? I see Automator can automate ...
ArtOfWarfare's user avatar
0 votes
0 answers
218 views

Adding "Explicit" Label to Songs [duplicate]

When transferring a song from a CD to my iTunes library (or downloading an .mp3), I've noticed that Explicit and Clean labels are not present (as seen below). I've already added all the information ...
Zach Gates's user avatar
2 votes
4 answers
940 views

Good free audio converter for OS X Lion?

Am trying to find a simple audio converter to convert various m4a, wma, mp3, and flac files to standard mp3 128KB VBR (for an ancient mp3 player with limited storage). I'm probably only going to use ...
herculeesjr's user avatar
0 votes
1 answer
6k views

How to get and set metadata of a m4a file?

I am trying to automate some changes in m4a metadata and would prefer doing it through AppleScript other than popular solutions like mutagen. How can I address m4a files metadata? I need not only ...
blackeyeliner's user avatar
8 votes
4 answers
21k views

How to identify codec (AAC vs ALAC) used in an m4a file

Given that the m4a format is merely a container, and can contain music encoded with a lossy (AAC) or lossless (ALAC) codec, is there a simple way to determine which codec was used for a given file?
Jim Garrison's user avatar
4 votes
5 answers
9k views

How can I convert an m4a to mov?

I have a m4a audio file that I need to convert to a mov file. How can I do this?
ericg's user avatar
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3 votes
2 answers
3k views

How to re-encode iTunes m4a files to mp3

I want to convert some of my iTunes m4a files to mp3 files but because I have multiple iTunes accounts, iTunes wont play these files due to computer authorisation issues therefore I can't use iTunes ...
user52539's user avatar
1 vote
2 answers
191 views

How to build a simple app that turns text to m4a files

I'm learning Chinese and want a way to quickly generate and save words and phrases to m4a files. I've managed to do pretty much what I want in terminal, but I can't seem to figure out how to make an ...
Henrik's user avatar
  • 214
6 votes
3 answers
4k views

Convert ALAC to aac 128k with all metadata intact

I have about 300 gigs of ALAC files (m4a container) with well groomed metadata, album art, etc. (Original source: CD rips with dbPowerAmp). I want to convert my music library to 128kbps AAC (still m4a)...
Nelson's user avatar
  • 1,104
0 votes
1 answer
173 views

Does iTunes put my iTunes account information in track files when I import CD albums?

Does iTunes put my iTunes account information in track files when I import CD albums? I never shared any music because I prefer to buy original CDs but if someone stoles some files of mine can my ...
P5music's user avatar
  • 229
11 votes
6 answers
14k views

How to replace an MP3 or M4A in iTunes with a higher quality file, without having to re-do playlists containing the track?

I have in my iTunes library some songs that, years ago, I ripped from CDs at bit rates of only 128kbps. Storage is cheap now and I'd like to replace those songs with higher-quality versions (e.g. ...
Chris W. Rea's user avatar
  • 4,429
5 votes
2 answers
4k views

How to replace mp3 files with m4a versions in itunes?

A few points before I get into my question/issue: I am not looking for a way to convert file formats. The library and all music is located on another Mac on the local network (so it is not indexed by ...
JVC's user avatar
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2 votes
1 answer
1k views

copy song info from mp3 file to aac file from terminal

I am trying to create a script that performs various conversions between formats of audio files. In one particular step, I use afconvert in Terminal to convert an mp3 to aac(mpeg4/m4a), but in this ...
sion's user avatar
  • 477
11 votes
5 answers
11k views

Merge multiple m4a files

Is there an easy way to do this? I have several folders with music files that I want to join. So it would be good if there is a batch solution to this problem.
Philip's user avatar
  • 111
0 votes
1 answer
698 views

How do I remove the “video” flag from a transcoded .m4a file?

I transcoded a bunch of music videos downloaded for free from the iTunes Store to audio only .m4as in the Finder, following the hint at http://osxdaily.com/2012/01/16/convert-video-to-audio-mac-os-x-...
Kris Cottingham's user avatar