More > JRiver Media Center 29 for Windows
NEW: JRVR -- JRiver Video Renderer
Hendrik:
I've split the questions regarding colors and HDR tonemapping to their own thread here:
https://yabb.jriver.com/interact/index.php/topic,132758.0.html
In general, if you have a lengthy question and/or request help with setup or investigate an issue, a new thread is generally far better to contain your discussion and ensure nothing gets missed when other discussions pop up in the main thread.
pepar:
jmone’s post a few above this has me wondering how scaling is handled in commercial theaters?
jmone:
--- Quote from: pepar on April 13, 2022, 08:37:21 am ---jmone’s post a few above this has me wondering how scaling is handled in commercial theaters?
--- End quote ---
I don't think they really scale content in digital theater like we think of it, as the DCP package with the video encoded as JPEG 2000 for each frame.
Over 90% of the theatres in the world now screen from DCPs. If you’ve seen a movie in a cinema lately – it was likely from a Digital Cinema Print.
In summary:
- The entire pipeline from encoding to projection is tightly defined and controlled (so there are only a few combination of options)
- "Digital Theaters" will have a 2K or 4K projector (DLP)
- Content is these DCP packages deliver 2K or 4K JPEG 2000 based video that is fed to the DLP (which I assume is where any scaling, frame rate switching etc is done).
There is more info at https://www.isdcf.com/site/smpte-dcp-tests/ with sample footage that can be downloaded but they certainly don't play in MC (but media info will give you some details on the files, one MXF each for video, audio, and subs).
Edit, reading some more. The max bit rate for DCP is 250Mbs, and while a 2K or 4K Projector can take a 2K or 4K package a mismatch creates a drop in perceived image quality (do to the up or down scaling). As a result, studios tend to create both a 2K and 4K version on the same package and the cinema will then plays the correct one that matches their projector.
AGHTPC:
--- Quote from: jmone on April 13, 2022, 04:02:20 pm ---I don't think they really scale content in digital theater like we think of it, as the DCP package with the video encoded as JPEG 2000 for each frame.
Over 90% of the theatres in the world now screen from DCPs. If you’ve seen a movie in a cinema lately – it was likely from a Digital Cinema Print.
In summary:
- The entire pipeline from encoding to projection is tightly defined and controlled (so there are only a few combination of options)
- "Digital Theaters" will have a 2K or 4K projector (DLP)
- Content is these DCP packages deliver 2K or 4K JPEG 2000 based video that is fed to the DLP (which I assume is where any scaling, frame rate switching etc is done).
There is more info at https://www.isdcf.com/site/smpte-dcp-tests/ with sample footage that can be downloaded but they certainly don't play in MC (but media info will give you some details on the files, one MXF each for video, audio, and subs).
Edit, reading some more. The max bit rate for DCP is 250Mbs, and while a 2K or 4K Projector can take a 2K or 4K package a mismatch creates a drop in perceived image quality (do to the up or down scaling). As a result, studios tend to create both a 2K and 4K version on the same package and the cinema will then plays the correct one that matches their projector.
--- End quote ---
Scaling is not allowed per the digital cinema initiative but there is talk this will change as videowalls slowly find their way into the commercial cinema industry.
Using a HTPC the JRVR Renderer is off to an excellent start. Looking at a really big image through a cinema projector it renders an image smoother and cleaner than Madvr. As the renderer matures please do not allow for filters that reduce image quality producing that digital look due to EE, haloes etc.
I have not read the entire thread, I am starting from the end working my way toward the beginning. Can the renderer be downloaded? As new features are added it would be nice to have the security to roll back to an earlier version. Keep up the good work.
JimH:
--- Quote from: AGHTPC on April 15, 2022, 02:17:45 am ---Can the renderer be downloaded? As new features are added it would be nice to have the security to roll back to an earlier version.
--- End quote ---
It's part of MC. You could always download an older build of MC from the forum threads.
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