The MPEG-4 Part 2 standard (ISO/IEC 14496-2) is widely used for encoding and streaming. The MainConcept MPEG-4 Part 2 codec for the MainConcept Reference application offers a superior quality. As audio codecs, it includes the AAC (Advanced Audio Coding) as well as AMR (Adaptive MultiRate) encoding and decoding. Many mobile devices, such as mobile phones require these video streams as 3GPP or MP4 for playback. MainConcept MPEG-4 Part 2 offers presets for Apple iPod, Sony PSP and various mobile phones. It even includes several presets for the H.263 format that is also a renowned standard for common mobile devices. The software under Windows also includes the MainConcept MPEG-4 Part 2 Decoder filter, enabling playback of MPEG-4 and H.263 streams in the Windows Media Player and other compatible programs. MainConcept MPEG-4 Part 2 can only be used when the MainConcept Reference base application is installed (not included ? free download).