Select eligible WAV files
Add non-empty .wav files up to 100 MB each. The source must contain audio that host FFmpeg can read.
Server-backed WAV to M4R conversion
Encode WAV audio as a new M4R file.
Turn supported WAV audio into audio-only, fast-start M4R downloads with AAC encoded at 160k.
- AAC at 160k
- Fast-start M4R
- 100 MB per file
Processed by our self-hosted conversion engine
Supported files
WAV source, M4R result.
WAVM4R
The converter decodes a supported WAV source and writes its first audio stream as AAC at 160k in a new M4R using FFmpeg’s iPod muxer.
How it works
Queue WAV files, then download new M4R audio.
Run the fixed conversion
Start the queue to process one file at a time with this route’s AAC at 160k FFmpeg profile.
Check and download each M4R
Review a completed result in compatible software, then download its separately named M4R file.
Processing boundaries
Fixed AAC at 160k output from the first audio stream.
The fixed profile maps only the first audio stream, removes video, metadata, and chapters, then writes fast-start AAC M4R output.
Convert WAV to M4RWAV files up to 100 MB
Only non-empty .wav uploads of 100 MB or less are accepted. Unsupported or unreadable audio sources cannot be converted.
New AAC at 160k encoding
The result is a newly encoded audio file, not a copied WAV stream. File duration, size, and acceptance by a particular ringtone workflow are not guaranteed.
First audio stream only
Only the first audio stream is mapped. Video, alternate tracks, subtitles, and attachments are excluded from this audio-only result.
No source tags or editing controls
Source metadata and chapters are removed. This route provides no trim, stream-selection, bitrate, sample-rate, channel, or quality controls.
WAV-to-M4R details
Understand the file before you convert
Which WAV files can I upload?+−
Use non-empty .wav files up to 100 MB. Host FFmpeg must be able to read an audio stream in the source.
What does the downloaded M4R contain?+−
A successful conversion contains a newly encoded, audio-only M4R result from only the first audio stream using AAC at 160k.
Can I add more than one file?+−
Yes. Add multiple eligible files. The browser submits each queue item sequentially and every completed result has a separate download.
Is WAV to M4R a stream copy?+−
The result is a newly encoded audio file, not a copied WAV stream. File duration, size, and acceptance by a particular ringtone workflow are not guaranteed.
Will source metadata or chapters remain?+−
No. The conversion profile removes source metadata and chapters. Alternate audio tracks, video, subtitles, and attachments are not included.
Can I change M4R settings or trim the audio?+−
No. There are no trimming, duration, stream-selection, bitrate, sample-rate, channel, or quality controls.
Does the preview guarantee the conversion will succeed?+−
No. Browser playback support and host FFmpeg readability are different checks. A file must be readable by FFmpeg for conversion, and playback depends on browser support.