The DNxHD license allows in-camera recording onto XR Capture Drives, SxS PRO, SxS PRO+ or CFast 2.0 cards of 16:9 Avid DNxHD 145 (8 bit 4:2:2), DNxHD 220x (10 bit 4:2:2) or DNxHD 444 (10 bit 444) codecs, all with an MXF wrapper and embedded audio, timecode and metadata. ALEXA MXF DNxHD files are stored using operational pattern OP1a, frame wrapped, per SMPTE 2019-4-2008. ARRI provides a free ALEXA AMA plug-in for Windows or Mac OS X for use in Avid Media Composer 5.5 and later. Requirements: Software Update Packet 6.0 or higher for ALEXA and ALEXA Plus. SUP 6.1 or higher for ALEXA Plus 4:3, ALEXA Studio and ALEXA M. SUP 8.0 or higher for ALEXA XT or ALEXA XT M. Always included in ALEXA Plus 4:3, ALEXA Studio, ALEXA XT Plus and ALEXA XT Studio. Not compatible with ALEXA SXT, SXT W and LF cameras.