If connecting a Blackmagic Cinema Camera via Thunderbolt to a laptop, can you record directly to the harddrive of the laptop? Which bitrate does have these recordings if using ProRes HQ422 at 1920x1080 @25p? And what's the real bitdepth of the image you get in this setup?

  • Just real life experiences. The specs are well known. Commented Jul 7, 2012 at 6:57
  • What do you mean by real bitdepth? The bit depth is there in the specs of the codec - ProRes422-HQ is 10 bit. It's not something you can fudge.
    – stib
    Commented Jan 28, 2014 at 13:14

1 Answer 1


The Media Express software it ships with will let you capture video directly from the Thunderbolt port at 23.98p, 24p, 25p, 29.97p, 30p frame rates (from the tech specs page)

From the Wikipedia ProRes 422 page you will get 10-bit sample depth, and High-Quality comes in at 220 Mbit/s for HD resolution at 60i

Thunderbolt can handle 10Gb/s and SATA 3 can handle 6Gb/s so they will not be a bottleneck here.

  • I asked for a certain setup. Do you have experience with that camera? Commented Jul 7, 2012 at 6:53

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