Questions tagged [m4a]
The m4a tag has no usage guidance.
44
questions
0
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1
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28
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How to query media file metadata using ffprobe, e.g., track number?
I want a single command to retrieve track number (or other metadata) from an audio file using ffprobe.
0
votes
0
answers
90
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I install ffmpeg in the AWS EC2 environment and convert the audio .wav file to .m4a, but I'm having trouble with loud noise
I install ffmpeg in the aws EC2 environment and convert the audio wav file to m4a, but I'm having trouble with loud noise I don't know how to set parameters without noise.
The ffmpeg version is ffmpeg-...
- 1
0
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3
answers
185
views
How can I detect audio files with skipping?
I have a relatively large music library (about 55,000 songs - primarily .m4a and .mp3), some of which was ripped from scratched CDs. How can I either fix the files, or get a list of ones with issues? ...
0
votes
1
answer
58
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Convert raw .audio file to .m4a
I have some sound recordings I made but now, it is recovered as .audio file. So, I downloaded Audacity and I'm trying to convert it back to .m4a. But I have no idea what should I put in these fields:
0
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2
answers
660
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How to convert a .wav file to .m4a without adding any leading/trailing silence?
The short question is: How do you convert a .wav file to .m4a without having any leading or trailing silence added to the output? The file is supposed to be played in an endless loop, where even a ...
- 331
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1
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127
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ffmpeg as mp3DirectCut alternative for .m4a
I'm trying to use ffmpeg for trimming .m4a files, i.e. discarding some parts at the beginning and at the end and applying fade-in and fade-out effects around the remaining part, which I'd like to ...
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0
votes
1
answer
435
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FFmpeg - How to cut .m4a song without losing quality?
I would like to cut a song from 1:45 to the end (I mean, I would like to keep only the part from 0:00 to 1:45). But I don't want to lose the quality of the song. How can I to do that using FFmpeg?
...
1
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0
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313
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Rebuild .m4a file with ffmpeg
I have a couple of corrupt m4a file that I'd like to try to repair by rebuilding the container, so I thought ffmpeg could do that easily. However, when I run this, even on a valid file, I get an error:...
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2
votes
0
answers
214
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What data type should frame byte stream in m4a file be converted to?
I am a newbie in audio processing research and using pydub module in python3 to manipulate audio files in “m4a” format. It is ok for me to read the original m4a files with pydub at the beginning, but ...
- 21
1
vote
1
answer
411
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Windows-Tags in .m4a metadata
In Windows 10 it is possible to add tags to a number of file types, including .m4a files. What I mean are these:
I would like to read those tags programatically, but I have found nothing that tells ...
2
votes
1
answer
3k
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convert mp3 audio to aac m4a audio
It may be easy, but I'm new to ffmpeg and struggle with converting an mp3 audio to an aac audio file with .m4a file extension using ffmpeg on the command line (Win10).
input: Stream #0:0: Audio: mp3, ...
- 123
0
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1
answer
275
views
Fixing M4A file which got currupted due to not closing the file properly while writing [duplicate]
I have an audio recording that I did with my phone. The recording was running for 3 hours when my battery ran dry. The file is 121 megabytes so it does contain the data, but the file ending and ...
- 129
0
votes
1
answer
416
views
Does converting 128kbps m4a to 128kbps mp3 mean anything?
So I have quite a bunch of these m4a files and I want to know if converting 128kbps m4a to mp3 will degrade it's quality in any way.
For those who ask why I do it I have huge podcast library and it's ...
- 1
2
votes
1
answer
5k
views
Why do audio files converted from OPUS to M4A have a much higher bitrate?
When doing:
youtube-dl -xf bestaudio/best <link to playlist>
...I get a lot of OPUS files at relatively "normal" bitrates like 130kbps.
However, when I run the same command with the ...
- 12.1k
4
votes
0
answers
2k
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 ...
- 41
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1
answer
7k
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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 ...
- 95
2
votes
1
answer
2k
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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 ...
- 394
0
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2
answers
2k
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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),...
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1
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1k
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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 ...
- 12.1k
10
votes
1
answer
11k
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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 ...
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1
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661
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 ...
- 165
11
votes
4
answers
19k
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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 ...
- 1,165
0
votes
0
answers
837
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 ...
- 101
4
votes
2
answers
745
views
Mixed results writing M4A metadata
Given this file:
youtube-dl -f 140 -o in.m4a --fixup warn https://youtube.com/watch?v=j-70HbaR4g4
I am having mixed results writing metadata. For example these commands:
ffmpeg -i in.m4a -c copy in....
- 1
110
votes
7
answers
148k
views
FFMPEG: Convert m4a to mp3 without significant loss
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 ...
- 2,506
0
votes
1
answer
1k
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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 ...
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4
votes
1
answer
2k
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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
1
vote
2
answers
9k
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?
- 1,784
1
vote
1
answer
4k
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 ...
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2
votes
4
answers
7k
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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 ...
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3
votes
2
answers
2k
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
1
answer
3k
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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'...
- 3,987
0
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1
answer
2k
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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 ...
- 7,337
1
vote
1
answer
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:\...
- 21.6k
3
votes
2
answers
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 ...
- 7,337
1
vote
1
answer
156
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....
- 6,597
1
vote
3
answers
865
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
(...
user3109
10
votes
2
answers
29k
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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. ...
- 6,597
1
vote
1
answer
2k
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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.
- 151
1
vote
3
answers
3k
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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 ...
- 267
18
votes
6
answers
66k
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
8
answers
49k
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 ...
- 942
51
votes
8
answers
105k
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 ➔ ...
- 5,700
3
votes
2
answers
3k
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How to enable MP3, M4a support for Amarok?
How to enable MP3, M4A support for Amarok? I am using the following:
Amarok Version 2.0.1
KDE 4.1.3
openSUSE 11.1
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