Dropped Frames

Tue May 19, 2020 7:48 pm

Reviewing footage from my shoot with the Alexa Mini, I noticed some dropped frames when I shot 60fps, Pro Res 4444. It did it to the first 5 clips on the card only. The first 5 clips were shot at 60FPS second slo-motion in a 23.98 time base. We did shoot slo-motion for some other clips on the card, and it looked fine.

At first I thought it may have been a Premiere issue, but when looking at the footage in Quicktime, it did show the frames missing. I had rented the camera, and the camera house said that when they played the clips back in camera they did not see the problem. I offloaded the entire card directly onto a hard drive via USB 3.0.

The cards were: SanDisk 256GB Extreme PRO CFast 2.0 Memory Cards

Any ideas?
Posts: 1
Joined: Thu May 14, 2020 5:20 am

Re: Dropped Frames

Tue Jun 02, 2020 12:49 pm

Dear Michael,

If you still have access to the original footage, feel free to upload one of the affected clips to e.g. wetransfer and send us the error description to [url=mailto:digitalworkflow@arri.de]digitalworkflow@arri.de[/url].

We'll have a look.
Always good to get the camera log-files if you can supply those as well.

Jan Heugel
Application Engineer
Jan Heugel
Posts: 381
Joined: Wed Aug 13, 2014 3:15 pm
Location: Munich, Germany

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