Command-line encoder that outputs aacPlus v2 files (ie. Advanced Audio Coding + Spectral Band Resonation + Parametric Stereo, or AAC + SBR + PS), also known as HE-AAC+ (High Efficiency AAC+). Developed by Coding Technologies, based on the reference code obtained from 3GPP, repackaged to compile on contemporary Linux by Matteo Croce. WWW: http://teknoraver.net/software/mp4tools/