More > JRiver Media Center 31 for Windows
Use a 4K capture card to tone map all sources with JRVR(?) Which cards will work
pixelpusher15:
Coming back to this...
I got a BlackMagic Quad 4K HDMI recorder and was able to get it to work with JRiver. I able to open the device and view my sources with minimal latency (audio is in sync). My issue, as of now, is that I'm unable to tone map HDR which is my whole point of wanting to do this. Is it possible for JRVR to work with capture inputs - or - am I missing something?
This is on version 31 which I know this is now in the wrong forum but I figured I'd keep this thread going...
mattkhan:
--- Quote from: pixelpusher15 on July 18, 2023, 08:16:41 pm ---Coming back to this...
I got a BlackMagic Quad 4K HDMI recorder and was able to get it to work with JRiver. I able to open the device and view my sources with minimal latency (audio is in sync). My issue, as of now, is that I'm unable to tone map HDR which is my whole point of wanting to do this. Is it possible for JRVR to work with capture inputs - or - am I missing something?
This is on version 31 which I know this is now in the wrong forum but I figured I'd keep this thread going...
--- End quote ---
JRVR is used for capture card playback, what makes you think it isn't being used? you should be able to check the debug osd to see what is going on
perhaps the issue is that it doesn't see the source as HDR? does other software see the relevant metadata on the video stream? or is there some blacklink utility that can show what it is presenting? if it's present, it's possible MC just doesn't read that info from the stream
Hendrik:
That would be my guess, that either the card doesn't present metadata, or whatever part is reading the image from the card isn't getting the metadata. I think Yaobing is dealing with capture input, maybe he can shed some light if metadata about the image is read at all.
You could make sure JRVR is running by turning on the OSD (Ctrl-J) and then also posting a screenshot of that. If all the input data is unknown, then its likely not reading anything from the card.
pixelpusher15:
The card is presenting the metadata. i can confirm this by using VideoProcessor (see attached). And yup, it looks like MC isn't reading in the HDR metadata but JRVR is being used. (see attached)
claw:
Dennis had to write code to get HDR10 metadata for Video Processor to send to madVR. The DeckLink cards don't forward the metadata. Before he did that he created a metadata injector to send hard-coded metadata values. It might be possible to add it as a plug-in filter in JRiver. I assume that JRVR does not rely on accurate HDR10 metadata values.
https://github.com/defl/directshow_metadata_injector_filter
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