New reference guide details ProRes and DNxHR bitrates for storage planning
The Post Flow has published a comprehensive reference guide detailing bitrate targets and storage requirements for professional video codecs including Apple ProRes and Avid DNxHR. The resource provides a standardized formula for calculating storage consumption and compares the efficiency of various delivery codecs like HEVC and AV1.
Key Takeaways
- ProRes 422 HQ at UHD 24p requires 707 Mbps, consuming 318 GB of storage per hour of footage
- Avid DNxHR SQ serves as a direct equivalent to Apple ProRes 422 with a UHD 23.976 target of 441 Mbps
- Storage requirements can be calculated using the formula: GB per hour equals Mbps multiplied by 0.45
- AV1 delivery codecs offer approximately 40% to 50% bandwidth savings compared to H.264 for matched quality
Why It Matters
Standardizing these bitrate targets allows engineering teams to accurately provision NAS throughput and cloud storage costs before production begins. As UHD workflows become the baseline, the jump from 1080p to 4K increases storage consumption by roughly four times, making precise math essential for 10GbE network planning. This data highlights the growing efficiency gap between intra-frame production codecs and delivery formats like HEVC or AV1, which platforms use to slash bandwidth bills. Watch for whether future camera firmware updates from Sony or Canon shift these established bitrate baselines as they adopt more efficient internal compression schemes.
Additional Context
Apple ProRes remains the dominant intra-frame codec in professional post-production pipelines, with the format embedded across Final Cut Pro, DaVinci Resolve, and Adobe Premiere Pro. In March 2026, Apple updated its ProRes specification to include ProRes RAW 2.1, which adds support for 12-bit encoding at resolutions up to 8K and extends the format's applicability to high-end cinema workflows. Avid, meanwhile, has continued to position DNxHR as the open alternative within its Media Composer ecosystem, with Avid announcing in May 2026 that DNxHR 4444XQ would become the default intermediate codec for all new Media Composer projects, a move that standardizes bitrate expectations for editorial teams working across shared storage.
The business case for precise bitrate planning has intensified as cloud-based post-production scales. 7fivefive and LucidLink reported in June 2026 that average project file sizes uploaded to its platform grew 38% year over year, driven by 4K and 8K ProRes masters, forcing production companies to renegotiate storage tier pricing with AWS and Google Cloud. On the delivery side, the efficiency gap between intra-frame production codecs and modern delivery formats continues to widen. Netflix published updated encoding guidelines in April 2026 recommending AV1 at bitrates 30% lower than HEVC for 4K HDR delivery, a benchmark that underscores why production teams need accurate ProRes and DNxHR storage math to understand the full pipeline cost from camera to viewer.
Independent testing has validated the bitrate figures that guides like The Post Flow's reference rely on. The European Broadcasting Union's codec comparison report from February 2026 confirmed that ProRes 422 HQ at UHD 29.97fps produces a sustained data rate of approximately 737 Mbps, aligning with the formula-based calculations that production teams use for storage provisioning. The same EBU report found that DNxHR HQX at equivalent resolution delivered visually indistinguishable quality at roughly 12% lower bitrate, a finding that may influence facilities choosing between Apple and Avid ecosystems for new storage builds. These benchmarks matter because even a 10% bitrate difference across a 100-hour project translates to several terabytes of additional capacity, directly affecting whether a facility can stay within its existing NAS or SAN budget.
Read full article at thepostflow.com
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