More > JRiver Media Center 31 for Windows
Use a 4K capture card to tone map all sources with JRVR(?) Which cards will work
FenceMan:
Is this currently working with non HDR sources, decklink mini and JRVR?
claw:
--- Quote from: FenceMan on July 25, 2023, 04:08:57 am ---Is this currently working with non HDR sources, decklink mini and JRVR?
--- End quote ---
Looks like the DeckLink cards don't pass Primaries and Transfer Function for SDR either. Although the SDR output looks OK; perhaps defaulting to SDR input. (Note that I had JRVR configured to output BT2020)
Yaobing:
--- Quote from: claw on July 24, 2023, 09:05:22 pm ---I was able to get JRiver 31 to recognize the DeckLink card as a Camera device. Sending it 4K23 input and the picture is smooth.
--- End quote ---
The reason why such devices are recognized as cameras is because they do not provide programming interfaces for us to choose which video output line to use. You have to go to the device's own set up or configuration page to set it up. Likewise, might there be a setting there too to let it output metadata so the downstream DirectShow filter JRVR could process? To be honest I don't have much knowledge on this.
claw:
--- Quote from: Yaobing on July 27, 2023, 11:16:29 am ---The reason why such devices are recognized as cameras is because they do not provide programming interfaces for us to choose which video output line to use. You have to go to the device's own set up or configuration page to set it up. Likewise, might there be a setting there too to let it output metadata so the downstream DirectShow filter JRVR could process? To be honest I don't have much knowledge on this.
--- End quote ---
Pretty sure there is not any configuration setting for this. Seems to be an issue with all of the avaliable 4K capture cards. While they may support HDR recording, they don't seem to include HDR metadata in pass through mode.
What I think might work is if JRiver/JRVR supported adding DirectShow Filter plug-ins in Advanced...Custom...JRVR mode. The filter might be able to use the Black Magic API to obtain the metadata, or it could just hard code the metadata which would work with most any capture card. The filter would need to be called before JRVR is.
I previously linked to a Directshow Filter that hard codes HDR metadata including the missing Primaries and Transfer Function.
https://github.com/defl/directshow_metadata_injector_filter
Never mind about the metadata injector filter I linked to. It was written to work with madVR only...
The filter will work regardless. Whatever you tell it, it will inject. It cares not what the source is (but it cares about the sink which has to be madVR).
Hendrik:
I looked at it, and to me the filter looks like its not dependent on madVR, it was just made for madVR because at the time it was the only one to understand this kind of metadata - but since I defined that metadata more or less for LAV, of course JRVR understands the same.
Technically we allow adding extra filters into the DirectShow chain - if that works with live input however ... I don't have a setup to test.
For MC31.0.40 and up, I added the injector to our video post-processor filter whitelist, maybe we can get that working somehow.
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