[2] DNxHD is intended to be an open standard, but as of March 2008, has remained effectively a proprietary Avid format.
It has been commercially licensed to a number of companies including Ikegami, FilmLight, Harris Corporation, JVC, Seachange, EVS Broadcast Equipment.
[4] On December 22, 2014, Avid Technology released an update for Media Composer that added support for 4K resolution, the Rec.
Xpress Pro is limited to using DNxHD 8-bit compression, which is either imported from file or captured using a Media Composer with Adrenaline hardware.
Such material is immediately accessible by editing platforms that directly support the DNxHD codec.
At the April 2012 NAB show, Brevity introduced a customized algorithm for the accelerated transport and encoding of DNxHD files.
Actual frame data consists of packed macroblocks using a technique almost identical to JPEG: DC prediction and variable-length codes with run length encoding for other 63 coefficients.