Avid DNxHR, which stands for "Digital Nonlinear Extensible High Resolution", is a
lossy
In information technology, lossy compression or irreversible compression is the class of data compression methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data size ...
UHDTV
Ultra-high-definition television (also known as Ultra HD television, Ultra HD, UHDTV, UHD and Super Hi-Vision) today includes 4K resolution#Resolutions, 4K UHD and 8K resolution#Resolutions, 8K UHD, which are two digital video formats with an ...
post-production
Post-production is part of the process of filmmaking, video production, audio production, and photography. Post-production includes all stages of production occurring after principal photography or recording individual program segments.
Th ...
codec
A codec is a device or computer program that encodes or decodes a data stream or signal. ''Codec'' is a portmanteau of coder/decoder.
In electronic communications, an endec is a device that acts as both an encoder and a decoder on a signal or ...
engineered for multi-generation
compositing
Compositing is the process or technique of combining visual elements from separate sources into single images, often to create the illusion that all those elements are parts of the same scene. Live-action shooting for compositing is variously c ...
with reduced storage and bandwidth requirements. The codec was specifically developed for resolutions considered above
FHD/1080p, including
2K,
4K and
8K resolution
8K resolution refers to an image or display resolution with a width of approximately 8,000 pixels. 8K UHD () is the highest resolution defined in the Rec. 2020 (UHDTV) standard.
8K display resolution is the successor to 4K resolution. TV manufa ...
.
DNxHD will continue to be used for
HD resolutions.
On September 12, 2014,
Avid Technology, Inc. announced the DNxHR codec as part of a broader "Avid Resolution Independence" announcement at their Fall 2014 Avid Connect event, which was held during the
IBC 2014 conference in
Amsterdam
Amsterdam ( , , , lit. ''The Dam on the River Amstel'') is the Capital of the Netherlands, capital and Municipalities of the Netherlands, most populous city of the Netherlands, with The Hague being the seat of government. It has a population ...
,
Netherlands
)
, anthem = ( en, "William of Nassau")
, image_map =
, map_caption =
, subdivision_type = Sovereign state
, subdivision_name = Kingdom of the Netherlands
, established_title = Before independence
, established_date = Spanish Netherl ...
.
On December 22, 2014, Avid released Media Composer 8.3 which included support for 4K project formats and the DNxHR codec. Further details for the DNxHR codec were outlined in the "Avid High-Resolution Workflows Guide - December 2014".
Uses
It is used in both hardware and software. For example, some
camera monitor
A camera monitor (or external monitor) is a monitor that attaches externally to a digital camera to aid with photography and cinematography. Camera monitors typically have larger displays than the built-in monitors on consumer cameras, and are als ...
s with recording capability can record to this format for using in post production editing software.
Preliminary Specifications
DNxHR is available in the following flavors:
* DNxHR LB - Low Bandwidth (8-bit 4:2:2) Offline Quality
* DNxHR SQ - Standard Quality (8-bit 4:2:2) (suitable for delivery format)
* DNxHR HQ - High Quality (8-bit 4:2:2)
* DNxHR HQX - High Quality (12-bit 4:2:2) (UHD/4K Broadcast-quality delivery)
* DNxHR 444 - Finishing Quality (12-bit 4:4:4) (Cinema-quality delivery)
Bandwidth requirements for the codec and its different flavors have been announced in the "Avid High Resolution Workflows Guide - December 2014" on page 111.
Updated August 2015 avid.force.com "DNxHR Codec Bandwidth Specifications".
[{{Cite web, title = DNxHR Codec Bandwidth Specifications, url = http://avid.force.com/pkb/articles/en_US/White_Paper/DNxHR-Codec-Bandwidth-Specifications, website = avid.force.com, accessdate = 2015-10-09]
References
Video codecs