Convert M4R to WV

Turn M4R recordings into WavPack. Stored as 24-bit WavPack, which keeps the decoded sound exactly but cannot bring back what the AAC lost.

Converted in an isolated sandbox on our serversDeleted after 24 hours

Drop M4R files on the dialor turn it to pick what to do

M4R and WV

From

iPhone Ringtone

AAC ringtones for iPhone. The same container as M4A; the phone only accepts clips under 40 seconds.

Extensions: .m4r
MIME type: audio/mp4
Kind: Audio

To

WavPack

WavPack lossless and hybrid audio.

Extensions: .wv
MIME type: audio/x-wavpack
Kind: Audio

Options for M4R to WV

audio.channels: Number of audio channels. 1 is mono, 2 is stereo.
audio.denoise: Reduce steady background noise.
audio.normalize: Normalize loudness to -16 LUFS as streaming services do.
audio.sample_rate: Audio sample rate in Hz.
speed: Playback speed multiplier. 2 plays twice as fast.
trim_end: Second at which the audio or video stops.
trim_start: Seconds to cut from the start of audio or video.