Author Topic: Instructions for achieving 3520x1520 24fps 12 bit lossless in crop rec mode?  (Read 781 times)


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Does anyone have a shorthand set of instructions on how to achieve 3520x1520 resolution 24fps 12 bit lossless in 5d3, using the  "crop_rec" module as part of the experimental "ML crop_rec_4k.2018Jul22.5D113" build?

I'm using the SanDisk Extreme Pro 160MB/s 256GB card, which ML benchmarks show can record at over 110 MB/s continuous.

I'm only able to achieve 3584x1320 at those settings.

Even with setting Liveview preview to frozen, which A1ex says can improve the process, and even when going down to 11 bit lossless.

I seem to be limited to 1320 along the y/vertical access.

Is it a combination of selecting the correct crop mode and aspect ratio? I normally set the crop mode at 3.5K 1:1 centered 5x5, but I've tried several crop modes and several aspect ratios and still can't get past 1320 on the vertical axis.

Or am I still limited by card speed?


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Yes, it can be confusing. I find that pressing the Canon MENU button a couple of times helps to make sure resolutions are displaying correctly. If you mean 'continuous' recording at the resolution you describe, then I think not.

These are the presets/resolutions/states that I have tested:

1080p 24fps all bits GREEN

1080p/45fps > 10bit lossless (Full frame) Between GREEN and ORANGE
**SWEET SPOT** UHD1:1 > QHD-2560x1440 (1440p) 14bit lossless, 24fps (1.87 lens crop) 16mm=28mm ORANGE ****

UHD1:1 > 3K_Lite-2800x1536 14bit lossless, 24fps (1.87 lens crop) ORANGE

3K1:1 > 2960x1666 10bit lossless, 24fps (0.64 lens crops?) ORANGE

4K1:1 > 3K_3072x1728 (11fps) GREEN

4K1:1 > 11fps 3584x2016 10bit lossless (1.6 lens crop) Between GREEN and ORANGE

4K1:1 > 3840x2160 (2160p) 11fps GD Off, Audio Off, RED (15secs or so)

These are with Danne's custom builds.

Good luck!
5D3 1.1.3
5D2 2.1.2


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Thanks Timby! I'll keep plugging away, haha. The amount of time I've spent trying to improve my resolution and overall quality in ML with underwater video is nuts!