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URSA Mini Pro 12K: Blackmagic RAW bitrate & storage per hour

The Blackmagic URSA Mini Pro 12K records Blackmagic RAW. Maximum sustained write speed: 900 MB/s. Figures per sensor mode and compression level at 24 fps — video only.

Figures at 24 fps. Other frame rates scale linearly — open the calculator to change them.

12K (12288×6480, max 60 fps)

CompressionRatioBitrateData rateStorage / hour
Q03.3:18,784.0 Mbps1,098.00 MB/s3,952.8 GB
Q15:16,696.0 Mbps837.00 MB/s3,013.2 GB
Q38:14,680.0 Mbps585.00 MB/s2,106.0 GB
Q512:12,808.0 Mbps351.00 MB/s1,263.6 GB
3:13:17,848.0 Mbps981.00 MB/s3,531.6 GB
5:15:14,752.0 Mbps594.00 MB/s2,138.4 GB
8:18:13,024.0 Mbps378.00 MB/s1,360.8 GB
12:112:12,016.0 Mbps252.00 MB/s907.2 GB
18:118:11,296.0 Mbps162.00 MB/s583.2 GB

8.6K (8640×4860, max 75 fps)

CompressionRatioBitrateData rateStorage / hour
Q03.3:14,632.2 Mbps579.02 MB/s2,084.5 GB
Q15:13,531.1 Mbps441.39 MB/s1,589.0 GB
Q38:12,468.0 Mbps308.50 MB/s1,110.6 GB
Q512:11,480.8 Mbps185.10 MB/s666.4 GB
3:13:14,138.6 Mbps517.32 MB/s1,862.4 GB
5:15:12,505.9 Mbps313.24 MB/s1,127.7 GB
8:18:11,594.7 Mbps199.34 MB/s717.6 GB
12:112:11,063.1 Mbps132.89 MB/s478.4 GB
18:118:1683.4 Mbps85.43 MB/s307.5 GB

4K DCI (4096×2160, max 240 fps)

CompressionRatioBitrateData rateStorage / hour
Q03.3:1976.0 Mbps122.00 MB/s439.2 GB
Q15:1744.0 Mbps93.00 MB/s334.8 GB
Q38:1520.0 Mbps65.00 MB/s234.0 GB
Q512:1312.0 Mbps39.00 MB/s140.4 GB
3:13:1872.0 Mbps109.00 MB/s392.4 GB
5:15:1528.0 Mbps66.00 MB/s237.6 GB
8:18:1336.0 Mbps42.00 MB/s151.2 GB
12:112:1224.0 Mbps28.00 MB/s100.8 GB
18:118:1144.0 Mbps18.00 MB/s64.8 GB

Content-dependent codecs (constant quality, VBR) vary their data rate with scene complexity — the figures above are typical values, and actual rates range around them.

Cards and recording time

The URSA Mini Pro 12K sustains up to 900 MB/s, so its media has to keep up with the mode you shoot. At the highest rate in the tables above (1,098 MB/s) the recording times per card are:

CapacityRecording timeCards for 1 hour
256 GB4 min16
512 GB8 min8
1 TB15 min4
2 TB30 min2
4 TB1 h 1 min1

Offloading a shooting day

90 minutes of takes come to about 5.9 TB. Over USB 3.2 Gen 2 (10 Gbps) that is 1 h 56 min for a single copy — double it if you verify with checksums, and multiply by the number of backups.

What hardware it needs

Playing this back in real time means sustaining 1,098.00 MB/s of reads. One hour of footage is 4.0 TB, and that is what has to travel every time you copy, back up or archive it.

Any card or drive rated below 1,098 MB/s sustained will drop frames on playback, whatever its peak speed says on the box.

InterfaceSustained speedCopying 1 hour
1 GbE network (1 Gbps)110 MB/s9 h 59 min
USB 3.2 Gen 1 (5 Gbps)400 MB/s2 h 45 min
USB 3.2 Gen 2 (10 Gbps)850 MB/s1 h 18 min
Thunderbolt 3 / 4 (40 Gbps)2500 MB/s26 min

Times are for a single copy without checksum verification. Verified offload reads back what it wrote, so it takes roughly twice as long.

Related guides

Figures use decimal units (1 GB = 1000 MB), the convention used by drive and camera manufacturers. Computed with the same calculation engine as the Workflow Data Calculator — open it to add audio, streams, backup copies, offload time and storage cost, or to export a PDF report.

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