On the audio front, Advanced Audio Coding (AAC) remained a prominent choice for delivering high-quality audio at various bitrates. In 2010, work on the Opus codec was underway, aiming to create a flexible, highly efficient audio codec suitable for a wide range of applications, from low-bitrate speech to high-fidelity music.
This is a detailed archival and technical report on , a notable software package from the early era of Windows multimedia playback. final codecs 2010 spring festival edition