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Questions tagged [m4a]

The tag has no usage guidance.

3
votes
0answers
571 views

Check for damaged file mp3, m4a (aac) in Linux

I have around 15,000 music files stored on Ubuntu server (16.04), around 50% FLAC, 25% each mp3 and m4a (aac). I think maybe 3-5% are corrupted due to HDD hardware failure. The problems accumulated ...
0
votes
1answer
220 views

How to automatically rename music files?

I have around 700 audio songs in .m4a format which I downloaded from YouTube, but they are named as videoplayback.m4a. Is there any way they can be given proper titles automatically? All are famous ...
0
votes
1answer
566 views

Convert WMA to Apple-ecosystem-compatible format (mp3, m4a, aac)

I have a few hundreds wma files that I would like to convert to a different format, mainly because my entire library consists of mp3, aac, or m4a, so all compatible with Apple portable devices, and I ...
0
votes
2answers
728 views

converting to the same format many times - how much quality will I lose?

Almost a decade ago, I converted all my mp3 files higher than CBR 192 kbps to exactly CBR 192 kbps. This is because I can no longer here any difference between CBR 192 and CBR 320 (using and ABX test),...
0
votes
1answer
123 views

Maximising efficiency of my M4A music playlist

Reading this answer here and questions like: What lossy audio formats are more (or less) "efficient"? Are there any perceptible differences between the sound quality of 192 versus 320 kbps ...
4
votes
1answer
4k views

Convert m4a to aac without quality loss?

I wanna use a program on an .m4a file, but the program can't handle .m4a. It can handle .aac, however, and the codec of the file is MPEG-4 AAC. Is there a way to convert to .aac (and preferably ...
0
votes
1answer
384 views

Upload lossless m4a to Sony walkman without conversion using Windows 10?

Windows 10 Pro, Sony Walkman NWZ-W273S, 4GB, v. 1.0 Uploading (256kbit)m4a 109mb without conversion and it doesn't play, on the other hand if I convert it, along with the upload, the size gets ...
5
votes
2answers
6k views

What kind of metadata can be stored in m4a files?

I have a collection of voice recordings from my Android phone, all stored in .m4a files. I would like to know the date of the recording, but the file timestamps have all been set to the date at which ...
0
votes
0answers
551 views

ffmpeg -concat slowing down AAC audio files

I am concatenating six m4a files with this command ffmpeg -f concat -i audiofiles.txt -c copy all_audio_edited.m4a each file has a duration of 4 hours (24 in total) but the concatenation doesn't ...
1
vote
0answers
292 views

Mixed results writing M4A metadata

Given this file I am having mixed results writing metadata. For example this command ffmpeg -i confetti.mp4 -c copy -f adts - | ffmpeg -i - -c copy -bsf aac_adtstoasc -movflags faststart \ -...
40
votes
5answers
40k views

FFMPEG: Convert m4a files to mp3 without significant loss of information / quality. Automated bitrate

I have a load of audio files (about 1000) which I want to convert from m4a to mp3 so I can use play them on a CD player which has a USB port. I tried doing something simple like: ffmpeg -i FILE.m4a ...
0
votes
1answer
872 views

Read/Write albumart cover type in mp4/m4a with AtomicParsley or any other CLI tool?

Is it possible (and how) to read and/or write the cover type of the artwork embedded in mp4/m4a audio with AP? MP4 audio supports 'Front Cover' and 'Back Cover' types, and I can read/set those values ...
4
votes
1answer
2k views

FFmpeg corrupts M4A files

I am trying to create M4A files to play in my car, which has a USB interface. This file works fine as is. However if I remux the file using: ffmpeg -i Miaow-02-Hidden.m4a -c copy outfile.m4a It will ...
1
vote
2answers
6k views

How do I upload my .M4A (Apple Lossless) files to Google Music?

Google Music does not support .M4A (Apple Lossless) files and so Google's Music Manager skips them. How do I upload those?
1
vote
1answer
2k views

How to merge an image into an audio file?

I am trying to merge a thumbnail-size (104x80) image into an audio file (M4A). I want it to be played in JW Player, but it doesn't seem to support thumbnails. I have tried it in VLC Player, but the ...
2
votes
3answers
4k views

Can FFmpeg convert mp3 files into m4a in full, i.e. with both audio and video streams (jpeg cover) copied?

I use Zeranoe build of FFmpeg. It converts mp3 files into m4a files just fine, as far as the audio stream is concerned, but I can't figure out a way to keep the songs album cover jpeg, which ffmpeg ...
2
votes
2answers
655 views

How to extract the audo track from an m4a file?

I've got an m4a video file and would like to extract the sound. How can I do that? Running Arch Linux.
1
vote
1answer
2k views

How to increase volume of a track on OSX

I'm looking for some software to increase the volume of a track that I have in m4a (but I know how to convert it to whatever) for osx. Can anyone name such a thing? I tried macMP3gain but that doesn'...
0
votes
1answer
2k views

m4a file with Quicktime: Error - 2041: an invalid sample description was found in the movie

I have a number of m4a files that don't play properly. I previously thought that it was a problem with Media Monkey, but I managed to get Media Monkey to play some m4a files and the files I know don't ...
1
vote
1answer
4k views

Windows Media Center/Player doesn't show all songs in a folder

I have a home theater computer running Windows 7 and WMC. It is a fresh install from 5 days ago, fully patched/updated, though I have not installed WMP 12. All my music is in a second hard drive (D:\...
3
votes
2answers
2k views

Media monkey doesn't play m4a

I have a number of songs on my Windows computer that were copied over from Ubuntu. My mp3's work fine in Media Monkey, but none of my m4a's do. As I guess I believe that it might have something do ...
1
vote
1answer
143 views

How to pause an m4b file

When I play m4b files on my computer, they open with iTunes. I can stop the file, but I cannot resume the file from within iTunes. In order to pick up where I left off, I have to open the file again....
1
vote
3answers
648 views

Why is my ogg bigger than my m4a?

I am using the following commands to encode an audio file to m4a & ogg formats: ffmpeg.exe -i 0123456789 -ab 192k out.m4a ffmpeg.exe -i 0123456789 -f wav - | oggenc2.exe - -r -q 6 -o out.ogg (...
8
votes
2answers
22k views

How to increase the volume in an m4a file?

I have an m4a file. When listening to it on my iPod Touch, the volume is too low, even when I turn it all the way up. I need to increase the volume in the file so that I can hear what is being said. ...
1
vote
1answer
2k views

Merging m4a audio

Does anyone know any utilities for merging M4a files? Can be on PC, Mac or even Ubuntu/Linux. Done a lot of searching but haven't been able to turn up anything.
1
vote
3answers
3k views

Looking for audio-book style CD ripper [closed]

I have a number of audio books on CD that I'd like to convert to MP3 (or M4A) format. I'd prefer to have one large audio file per CD, with chapter marks at the track boundaries. Almost all the CD ...
17
votes
6answers
58k views

MP3 vs M4A (AAC): what is the audio codec for portable devices which gives maximum independence? [closed]

A couple of years back MP3 was the most supported format for portable devices. Then Apple came along and wiped the floor of all the portable devices with the iPod as well as the iPhone. They clearly ...
6
votes
8answers
47k views

Play Apple Lossless (.m4a, ALAC) files in Windows 7 Media Player?

Is there a good plugin or codec that allows Media Player/Media Center on Windows 7 to play Apple Lossless (ALAC) encoded files? As the files are shared between multiple iTunes installations and one ...
25
votes
6answers
56k views

How to decode AAC (.m4a) audio files into WAV?

How would you convert (decode) AAC files into WAV format? (Or, if you prefer, how to decode & re-encode them into MP3 or Ogg Vorbis? But WAV is sufficient as I already have good tools for WAV ➔ ...
2
votes
1answer
3k views

How to enable MP3, M4a support for Amarok?

Note: Amarok Version 2.0.1 KDE 4.1.3 Opensuse 11.1