DNxHR is Avid's intermediate codec for post-production workflows handling content beyond HD (2K, UHD, 4K and higher).
DNxHR (Digital Nonlinear Extensible High Resolution) is an intermediate or mezzanine codec developed by Avid Technology. It is the resolution-scaling evolution of DNxHD and is designed for post-production of material above HD – meaning for 2K, UHD, 4K, and higher. In contrast to camera-internal recording codecs, DNxHR is primarily used in editing, color correction, and conform, as it aims to maintain constant quality across every editing and rendering generation (multi-generation editing).
On set itself, DNxHR is less a recording format and more a downstream working format: many recorders and cameras can record in DNxHR. In lighting/grip environments, the codec is encountered mainly as a delivery or proxy format within the DIT/Data Wrangler workflow.
DNxHR is not a fixed bitrate value but a family of quality levels whose data rate scales with resolution and frame rate. Avid defines five profiles, from proxy to cinema delivery:
| Profile | Chroma | Typical Use |
|---|---|---|
| LB (Low Bandwidth) | 4:2:2 | Proxy / Offline editing, rough cut |
| SQ (Standard Quality) | 4:2:2 | Everyday broadcast production / Delivery |
| HQ (High Quality) | 4:2:2 | Broadcast with low generational loss |
| HQX | 4:2:2 (higher bit depth) | High-end broadcast, HDR, VFX-ready |
| 444 | 4:4:4 (RGB) | VFX and Cinema delivery, optional alpha channel |
The bit depth is set by the codec depending on the profile and resolution and is not freely selectable: LB to HQ typically work with 8-bit, HQX and 444 achieve higher bit depths (10/12-bit), making them suitable for HDR and VFX workflows.
DNxHR is stored in both the MXF container (Avid workflow) and QuickTime/MOV, making it interchangeable between Avid Media Composer and NLEs like DaVinci Resolve or Premiere Pro. The codec supports a very wide resolution range, covering 2K, UHD, 4K, and 8K.
In a practical set-to-post workflow, DNxHR serves as a cross-platform exchange and proxy format: LB for fast, resource-efficient offline edits, HQX/444 for color-critical online, HDR, and VFX work. As a counterpart to Apple's ProRes, DNxHR is often chosen when editing takes place in an Avid environment or when a manufacturer-neutral, cross-platform intermediate format is required.
DNxHR HQX verwende ich als Standard-Proxy-Format beim Shooting mit REDCode RAW, da ich damit alle Farbkorrekturen in Echtzeit beurteilen kann ohne Rendering-Wartezeiten. Die 10-Bit-Farbtiefe zeigt mir auch in der 4K-Vorschau präzise, ob meine Belichtung in den kritischen Hautton-Bereichen stimmt.
Für mich ist DNxHR vor allem beim Schnitt von Actionsequenzen wertvoll, da ich auch bei 4K-Material flüssig durch komplexe Timelines scrubben kann ohne Performance-Einbußen. Die konstante Bildqualität ermöglicht es mir, auch bei schnellen Schnitten und Farbübergängen präzise kreative Entscheidungen zu treffen.
DNxHR reduziert meine Storage-Kosten um etwa 40% gegenüber unkomprimierten 4K-Dateien, während die Rendering-Zeiten im Vergleich zu H.264 um den Faktor 8 sinken. Bei einer 90-minütigen Produktion spare ich dadurch etwa 12-15 Stunden Rechenzeit, was bei aktuellen Cloud-Preisen circa 800-1200 Euro ausmacht.
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