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Hello and welcome to my website! This is a non-profit website that I work on in my free time. I hope you like it :)

You can:

- Convert an audio file to another format.

- Extract the audio from a video and download it as an audio file.

- Convert a video to the MKV format.

- Downmix multi-channel audio to stereo.

Codecs / Encoder Information


This website uses the latest version of the LAME encoder (v3.100) to convert a video/audio file to MP3. The LAME encoder is considered to be the highest quality encoder for MP3.


AAC was designed to be the successor to MP3 and is the codec of iTunes music. It's also the most common audio codec in MP4 videos. The extension of a raw AAC file is ".aac", and an AAC file wrapped in the MPEG-4 container has the extension ".m4a" (e.g. music downloaded from iTunes).

This website uses the Fraunhofer FDK AAC encoder which is a high quality AAC encoder. More specifically, the latest version of fdkaac (1.0.0) is used, which is a command line encoder frontend for fdk-aac (a standalone library of the Fraunhofer FDK AAC code from Android).


Vorbis has sort of been left in the shadow after the release of Opus, which is essentially its replacement. With that being said, it is a lossy codec that performs well, and compares favourably to MP3 at low bitrates (source). This website uses the latest version of Vorbis; libVorbis 1.3.6


Opus is the talk of the town in world of lossy audio codecs. It compares favourably to all of the major lossy codecs at low bitrates (source). This website uses the latest version of Opus; libopus 1.3.1