Windows > Third Party Plug-ins, Programs, and Skins
Blackmagic decklink Capture Filter Testing
jmone:
--- Quote from: mattkhan on April 21, 2025, 06:00:41 pm ---it's an MC limitation, refresh rate switching does not work for capture cards so you have to do it manually until MC supports that
--- End quote ---
FWIW - I do see MC (Client) change the display rate and the UltraStudio change as well. Not having the capture side change is a small thing, as I'm guessing most wanting this filter would have it all presetup for the correct frame rate anyway.
mattkhan:
--- Quote from: jmone on April 21, 2025, 06:20:42 pm ---FWIW - I do see MC (Client) change the display rate and the UltraStudio change as well. Not having the capture side change is a small thing, as I'm guessing most wanting this filter would have it all presetup for the correct frame rate anyway.
--- End quote ---
not sure if I'm telling you something you already know but..... the capture card will (should) change automatically & JRVR will see this, MC doesn't trigger a change in the actual output though and this needs to be fixed (people generally want this, e.g. if you feed an appletv in then it will change refresh rates and you want the whole chain to honour it). Note that it's not just a gapless playback issue, it's not even like you can restart playback and it will be in the rate frame rate (as this is based on library info and there's no library item to drive it)
jmone:
Yes, I think we are saying the same thing.
Expectingtofly:
Many thanks for creating this.
For info, I'm getting incorrect black levels on standard 1080p sdr content. For reference, I do get correct black levels if I use the blackmagic WDM capture device in JRVR or when using video processor + madvr.
My workflow is ybcr->Full (JRVR)->Full
I presume from the properties, the wdm device is converting the ybcr to full RGB and so is the bmcapture, but JRVR is seeing it as limited.
I've attached screenshots showing the incorrect black levels through JRVR bmcapture, and the correct levels through JRVR wdm and through VP
Let me know if you need any logs
mattkhan:
the decklink SDK does not provide any way to determine what the nominal range of the signal is, I can change it to signal unknown to the renderer though I'm not sure how JRVR will behave in this case, a Q for Hendrik to answer
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