aoTuV

aoTuV stands for Aoyumi's Tuned Vorbis and it is a third-party development or tuning encode library for Ogg Vorbis. Considering that this open-source format can provide outputs for mid and high quality and bitrates ranging from 16 to 128 kbps/channel, it can be argued that it is in the same class as MPEG-4 or AAC, for instance. On a side note, it is considered to provide a better quality than MPEG-4 TwinVq and MPEG-1 and 2 audio layers.

The idea behind the encoder is to significantly improve the quality of the well-known compressed audio format. Most of the releases, including the last one are static GCC 4 compiles and, because they include libkate, it means you can use them for subtitles. Moreover, they come with stdin support for FLAC and hence, you can transcode them directly from the pipe to Vorbis in Linux.

It is worth mentioning that the encoder is unified by the libVorbis of Xiph.Org, which is a collection of open-source multimedia-related projects. Similarly to the latter, this library helps improve the quality of the coding. Once the developer solved the issue with for the 5.1 channel source with the release of version 6, the encoder can be a great alternative to consider if you want to change the actual tone quality, for instance.