Nero Digital is a brand name applied to a suite of MPEG-4-compatible video and audio compression codecs developed by Nero AG of Germany and Ateme of France.
[2] The video codecs were developed by Ateme,[3] and according to an interview with Nero AG developer Ivan Dimkovic, the audio codecs are improved versions of Dimkovic's older PsyTEL AAC Encoder.
Nero Digital can generate streams in the 3GP/MPEG-4 Part 14 (".mp4") container format and includes two video and two audio codecs: The codecs are compliant with the ISO/IEC standard, with the exception of subtitles and chapter information.
The video streams generated by Nero Digital can be played back on some stand-alone hardware players and software media players such as the company's own Nero Showtime.
Nero Digital also does not ship its codecs as stand-alone DirectShow or VfW modules, preventing them from being used for general-purpose video editing.