Support for Non-broadcast formats (like 1280 x 1024 60Hz)

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VWag206

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Support for Non-broadcast formats (like 1280 x 1024 60Hz)

PostMon Feb 03, 2025 9:34 pm

I'm not much of an expert in this area, but I think I need the Decklink Mini-Recorder 4k to support something other than a standard broadcast format like 1080p, etc... I need to capture a 1280 x 960 @ 60Hz signal in some cases. And other cases I need to capture 1280 x 1024 @ 60Hz.

It appears in Blackmagic Media Express that it is simply coming into the card as 1920 x 1080 with black "letterbox" bars added to the left and right sides.

In some cases, it may be possible to work around this. But in this case, there is actual tearing in the video I think due to the conversion of the unsupported format.

Any ideas? Does Blackmagic not support "any" resolution signal?
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Uli Plank

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Re: Support for Non-broadcast formats (like 1280 x 1024 60Hz

PostTue Feb 04, 2025 1:43 am

You may be better off trying one of the gaming capture devices. We were successful with the Acasis VC-003. Use the 4:2:2 setting, the other is crap.
BM is strictly adhering to broadcast formats.
What exactly do you mean by tearing? Can you post a screenshot?

VC-003_formats.png
VC-003_formats.png (34.65 KiB) Viewed 267 times
My disaster protection: export a .drp file to a physically separated storage regularly.

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VWag206

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Re: Support for Non-broadcast formats (like 1280 x 1024 60Hz

PostTue Feb 04, 2025 7:40 pm

Thanks for the quick reply. We will look into some alternative cards. Unfortunately, I am not able to share an actual screenshot, but if you google "video tearing" most of those images will show what I'm talking about. Sorry, I would attach an image, but I don't see a way to do that at the moment...
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Uli Plank

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Re: Support for Non-broadcast formats (like 1280 x 1024 60Hz

PostWed Feb 05, 2025 1:48 am

Below your reply window there is an upload attachment tab.
Tearing in the usual sense is caused by a mismatch between the source fps and the rate the monitor can display.
My disaster protection: export a .drp file to a physically separated storage regularly.

Studio 19.1.3
MacOS 13.7.4, 2017 iMac, 32 GB, Radeon Pro 580 + eGPU
MacBook M1 Pro, 16 GPU cores, 32 GB RAM, MacOS 14.7.2
SE, USM G3

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