Add M4A files
Choose non-empty .m4a files up to 100 MB each that host FFmpeg can read with audio.
Free online M4A to M4R converter
Create a new AAC M4R file from M4A audio.
Fileverses takes the first audio stream from an eligible M4A and writes a newly encoded, audio-only M4R through a sequential server queue.
- AAC at 160k
- Fast-start M4R
- First audio stream
Processed by our self-hosted conversion engine
Supported files
M4A in. Fresh AAC M4R out.
M4AM4R
The fixed profile maps the first audio stream, removes source metadata and chapters, and writes AAC at 160k using FFmpeg’s iPod muxer.
How it works
Create individual M4R files from M4A audio
Run fixed M4R conversion
The browser submits each queued item one at a time; FFmpeg maps the first audio stream and encodes AAC at 160k.
Save and test each M4R
Download each separately named M4R result and validate it in the intended destination.
M4R processing facts
New AAC audio, not a ringtone editor.
Output is fast-start AAC at 160k in an M4R container. Fileverses does not trim audio, enforce a duration, or assess device or ringtone suitability.
Convert M4A to M4RAudio-bearing M4A only
Eligible inputs are non-empty .m4a files of 100 MB or less that host FFmpeg can read with an audio stream.
First audio stream only
Only the first audio stream is mapped. The route has no alternate-track selection and makes audio-only output.
Fixed AAC M4R profile
The new M4R contains AAC at 160k in a fast-start layout through FFmpeg’s iPod muxer; it is not a stream copy.
No ringtone editing or tags
Metadata and chapters are removed. There are no trim, duration, bitrate, sample-rate, channel, or quality controls, and suitability is not guaranteed.
M4A to M4R FAQ
M4R conversion questions
What is in the downloaded M4R?+−
A successful download is a new audio-only M4R with AAC encoded at 160k from the first source audio stream.
Does this automatically make a ringtone?+−
No. It creates an M4R file but does not trim audio, limit duration, or guarantee suitability for a device or ringtone workflow.
Is the M4A audio stream copied?+−
No. FFmpeg decodes the first audio stream and newly encodes AAC, so this is not a stream copy.
Can I choose another M4A track?+−
No. The route maps only the first audio stream and has no stream-selection control.
Can I change bitrate, duration, or quality?+−
No. AAC is fixed at 160k and there are no trim, duration, bitrate, sample-rate, channel, or quality controls.
What happens to metadata and chapters?+−
They are removed from the output. The route does not preserve source tags or chapters.
Which M4A files are eligible?+−
Use a non-empty .m4a file up to 100 MB that host FFmpeg can read and that has audio. Test the new M4R in its intended destination.