Estimates are based on a 24 fps baseline and scaled linearly with frame rate. Real-world file sizes vary by camera, sensor mode, firmware, and production workflow.
Why an ARRI data calculator matters
On modern sets, storage planning is not optional. Whether you are shooting ARRIRAW for a feature film or ProRes for fast-turnaround delivery, underestimating data can cause delays, missed backups, and overtime for the DIT team. An ARRI data calculator gives producers, cinematographers, and assistants a practical estimate before the first slate is called.
The goal is simple: turn recording format, frame rate, and expected shooting duration into a realistic storage plan. That means knowing how much media to bring, how many offload cycles to expect, and what nightly backup capacity your data wrangler needs.
How this calculator works
This tool starts with a baseline data rate for each format at 24 fps, then scales the rate based on your selected frame rate. It also factors in:
- Number of cameras (A-cam, B-cam, crash cam, etc.)
- Safety multiplier to account for retakes and coverage
- Card size so you can estimate media count
In practical terms, it helps answer two key pre-production questions:
- How many terabytes will we generate today?
- How many cards do we need to rotate safely?
Typical ARRI recording profiles (planning references)
| Format | Approx MB/s @ 24fps | Use Case |
|---|---|---|
| ARRIRAW 2.8K 16:9 | 220 MB/s | Maximum flexibility in post, VFX-heavy scenes |
| ARRIRAW 3.4K Open Gate | 280 MB/s | High-end feature and premium episodic workflows |
| ProRes 4444 XQ 4K UHD | 95 MB/s | High quality with lighter data overhead than raw |
| ProRes 422 HQ 4K UHD | 55 MB/s | Efficient editorial and broadcast-friendly projects |
Best practices for camera data management
1) Plan for peak days, not average days
Action sequences, stunts, and multi-cam dialogue days can spike data output. Build your media budget around the heaviest day in the schedule, then add contingency.
2) Follow the 3-2-1 backup approach
- 3 copies of camera originals
- 2 different storage types
- 1 copy off-site or cloud-synced
3) Coordinate camera and post early
If post expects ARRIRAW but production records ProRes, or vice versa, costs can balloon quickly. Confirm codec, color pipeline, and delivery specs before principal photography.
4) Validate card offload speed
A storage estimate is only half the story. Test your card readers, RAID throughput, and checksum software ahead of day one to avoid bottlenecks at wrap.
Example planning scenarios
- Indie narrative: 1 camera, ProRes 422 HQ, 8-hour shoot day, 1.2x multiplier.
- Commercial: 2 cameras, ProRes 4444 XQ, 60 fps hero shots, 1.5x multiplier.
- Feature drama: ARRIRAW Open Gate, 2 cameras, heavy coverage, 1.6x multiplier.
Run each scenario through the calculator and you can quickly compare storage cost, media rotation, and DIT staffing needs.
Final note
This ARRI data calculator is designed for planning and budgeting. Actual data rates can vary by recording mode and firmware updates, so always verify with current ARRI technical documentation and your camera rental house. Even so, a solid estimate can save time, protect footage, and keep your production running smoothly.