Convert MP3 to MKA

Turn MP3 recordings into MKA. The MP3 audio is moved into Matroska as it is, so nothing is lost and a cut lands on the nearest frame; any other option re-encodes it as 16-bit FLAC.

Converted in an isolated sandbox on our serversDeleted after 24 hours

Drop MP3 files on the dialor turn it to pick what to do

MP3 and MKA

From

MP3 Audio

The universal lossy audio format. Plays on anything made in the last twenty-five years.

Extensions: .mp3
MIME type: audio/mpeg
Kind: Audio

To

Matroska Audio

Audio-only Matroska. Any codec, with chapters and tags.

Extensions: .mka
MIME type: audio/x-matroska
Kind: Audio

Options for MP3 to MKA

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.