More > JRiver Media Center 31 for Windows
Use a 4K capture card to tone map all sources with JRVR(?) Which cards will work
pixelpusher15:
I have been slowly planning and building a HTPC that was to eventually be used for an MadVR Envy like system. I was going to use Video Processor + MadVR to do it.
VideoProcessor link: http://videoprocessor.org/
Well I just tested JRVR a bit it it might be good enough if JRiver allows easy use with capture cards. The thread below is what piqued my interest:
https://yabb.jriver.com/interact/index.php?topic=130584.0
If my understanding is correct it looks like it might "just work" with a DirectShow capable card...(??) If this is the case the JRiver is a much simpler solution and may also allow the use of better cards. Right now the only real options with VideoProcessor are BlackMagic DeckLink cards. $200 for a 4K30 capable cards and $550 for a 4K 60 card. What I'm wondering about is cards like the AverMedia LiveGamer 4K, or Elgato 4K60 Pro MK.2. Both of these cards are in the $200-250 range for 4K60 capability. But, there's always a but.... I believe the developer of VideoProcessor said that there's some funny business going on with how these cards work. IIRC it is that they may convert HDR to SDR when sending the stream to another app. I'm not sure about this and I don't have the technical knowhow to figure it out without just buying them and testing.
I'm hoping there are others here that know more than me or that have tested this. I also would find it to be awesome if this thread could be a place where we document what works and what doesn't. Tonemapping external sources well would be an amazing feat in my mind and if it can be done with JRVR it would add a ton of value IMO. As of now it looks like the Magewell cards work, but they are quite pricey.
mattkhan:
The only way to know is to try it unfortunately
I have a different magewell device and it does not work well with jriver TV feature (but does work fine with other software)
Yaobing:
The answer is yes, generally speaking. If the device supports DirectShow, it should work. However, we do have to implement quite some specific code to support some individual devices, and we do have a mechanism for adding new code to support new devices.
We have code to support at least one BlackMagic device. BlackMagic devices are a bit of strange in some aspect.
You need to try your devices and see how well they work. If they don't work, let us know and we might make some changes to make it work.
Yaobing:
I will add that the video captured on disk is uncompressed video, unless the capture card itself has hardware compression. The capture is written in JRiver TV format, JTV, which can be converted to another file format after the capture.
pixelpusher15:
--- Quote from: Yaobing on January 20, 2022, 12:35:11 pm ---I will add that the video captured on disk is uncompressed video, unless the capture card itself has hardware compression. The capture is written in JRiver TV format, JRV, which can be converted to another file format after the capture.
--- End quote ---
This bit tripped me up a bit. But I think get it now. I’m not wanting to record the incoming feed. Just view it and apply tone mapping to it. Is this possible or do I have to record it first? I have zero interest in recording.
Navigation
[0] Message Index
[#] Next page
Go to full version