Windows > Third Party Plug-ins, Programs, and Skins

Blackmagic decklink Capture Filter Testing

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claw:
I don't use the Presentation queue.   But if I enable it, the output video locks up.

jmone:

--- Quote from: mattkhan on April 19, 2025, 02:45:52 pm ---interesting that it reports HDR10, never seen that before

--- End quote ---

FWIW I see JRVR report "HDR10 0 nits" (note the space between 10 and 0) if I don't set "HDR Metadata" on my encodes in Resolve. 

claw:
I see these metadata related traces with version 8, but not in version 9 of the capture filter.   I would expect to see HDR10 1000 nits based on the MaxDML value in this trace.


03:14:30.379812819 [4720] capture.h:107                LOG_INFO      filter       [BlackmagicCaptureFilter] HDR metadata is now present
03:14:30.379813208 [4720] capture.h:115                LOG_INFO      filter       [BlackmagicCaptureFilter] Primaries RGB 0.6800 x 0.3200 0.2650 x 0.6900 0.1500 x 0.0600
03:14:30.379813247 [4720] capture.h:120                LOG_INFO      filter       [BlackmagicCaptureFilter] Whitepoint 0.3127 x 0.3290
03:14:30.379813284 [4720] capture.h:125                LOG_INFO      filter       [BlackmagicCaptureFilter] DML/MaxCLL/MaxFALL 0.0050 / 1000.0000 585 162

jmone:
WOW!  Alpha 9 is looking really good.  Did some HDR test from my laptop with MC --> UltraStudio --> Desktop with MC.
- Great looking picture
- Nice and stable
- Quick startup
- Buzzing sound is gone
- HDR worked

Here are some of the things that I could not figure out (it may also be all the combinations of settings in the tool path)
- Audio Channel Mapping: Missing Center & wrong Sub Channel.  The UltraStudio is seen by my laptop as a "normal" HDMI connection supporting up to 8ch.  If I pick any of the 5.1 / 7.1 config options I don't get any center channel, and the sub is mixed to the center channel on my Desktop.  It seems like a channel mapping issue but I'm not sure if it is in the capture code or with the config of either/and/or the Laptop / Ultrastudio
- HDR 10 0 nits:  Something is stripping out the static HDR Meta Data as I only get "HDR 10 0 nits" on the HDR Test Clips through this chain, but when played natively it is "HDR10 1000 nits"

Let me know what logs you want (and with what filter).

jmone:
I've also only been testing the Audio being decoded, I'd need to test if Bit streaming works?

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