I use ffmpeg to update metadata tags like this way: ffmpeg -i "in.m4a" -acodec copy -metadata artist="artist text" -metadata comment="comment text" "out.m4a" Well, "artist text" and "comment tex...

I have a couple of M4A (sound) files on a Mac that I want to combine into a single sound file. Can this be done with a Terminal command? Is there such a thing?

Is there an easy way to load m4a sound file in python. I've came across audiotools lib but I'm getting an error while using to_pcm fn audiotools.open('file.m4a').to_pcm() ------------------------...

I'm looking for a resource in python or bash that will make it easy to take, for example, mp3 file X and m4a file Y and say "copy X's tags to Y". Python's "mutagen" module is great for manupulatin...

I'm looking for an audio format where a silence of a couple of hours at the beginning does not affect the overall file size. Has anyone any idea which one to use and what settings I have to use? I ...

I have an audio app and I need to read and write the COMMENT tag of WAV and M4A files. This is all I need. I had struggled for hours without success. The closest I arrived is using com.github.goxr3...

I'm working on Windows 10 x64, build ffmpeg-20180916-5109c38-win64-static. I have a folder of MP3 audio files that I want to convert to M4A. This is the command that I'm running: FOR /F "tokens...

I am trying to modify an iOS app that can send audio files (securely/encrypted) to other iOS devices. It uses AVAudioRecorder to record the audio files, and it uses AVAudioPlayer to play back any r...

I am trying to make a nodejs website that will return the length in seconds of any audio file a user chooses. So far I have it working with mp3, wav, and flac files. But it doesn't work for all .m4...

As I understand it, Android will only play AAC format audio if it's encoded as MPEG-4 or 3GPP. I'm able to play AAC audio encoded as M4A when it's local to the app, but it fails when obtaining it ...

Is there any way to embed cover art to m4a files? This one works well for mp3 but doesn't work for m4a ffmpeg -i tests/in.m4a -i cover.jpg -map 0:0 -map 1:0 -acodec copy \ -id3v2_version 3 tests...

I know this question asked multiple times in this platform but none of them are solving my issue. I was trying to play a sound file in a loop but when a loop is complete first time there is a notic...

I am working on an M4a file with the following metadata: Metadata: major_brand : M4A minor_version : 0 compatible_brands: M4A mp42isom creation_time : 2019-08-14T13:45:39.000000Z iTunSMPB : ...

This is for trying to understand the aac file structure For simplicity we can assume m4a file with only aac audio (that is, no video) I am comparing an m4a file and an aac file made from the m4...

For some reason I am always receiving this error: Error Domain=NSURLErrorDomain Code=-3000 "Cannot create file" UserInfo={NSLocalizedDescription=Cannot create file, NSUnderlyingError=0x1321dd7...

used mediaplayer code to play audio files, failed to play .m4a extension audio files Error: java.io.IOException: Prepare failed.: status=0x1 01-01 14:54:30.399 8170-8170/com.abc.prjnameW/Syste...

In my iOS application I'm trying to export an mp3 file from the iPod library to the app's documents directory on the device. Currently I'm trying to use AVAssetExportSession but it's not working fo...

Can I use ffmpeg or another command-line tool (I recently downloaded mkvtoolnix for example) to directly extract audio into m4a files from webm videos? I've previously been doing this 2-step proce...

I don't want to use ffmpeg. Currently I was able to mux m4a audio with mp4 video. I wish to add mp3 audio also which required mp3 to m4a conversion.I was able to convert wav to m4a but not mp3 to m...

I use the following code to play an audio file. It plays fine for MP3 files, but when I try to play an AAC file, the [[AVAudioPlayer alloc] initWithContentsOfURL:] returns nil and I get the followi...

We have problems with an audio reader hybrid application, using fairly large audio m4a files. In short, it takes far too long to start the playback (when using online audio resources). To illustra...

There are a number of audio files that have .m4a suffix and these are encoded in one of AAC or Apple Lossless (ALAC). I want to choose only audio files encoded in Apple Lossless of them. Is there a...

I have an Android app using FAAC to convert raw PCM into raw AAC, but now I don't know how it can be packed into m4a container. I've searched on the net and found a lot of info, but none of them s...

I have NSData which contains M4A\AAC audio file and I want to convert it to MP3 stream in iOS Swift. I don't want to use the file system. I have tried a lot of near by examples but didn't succeed ...

I'd like to be able to add album cover into the file using mutagen, however when I add it as a file it returns with: File "D:\Download\pandora\renamingMETAEFF.pyw", line 71, in <module> me...