More > JRiver Media Center 29 for Windows
JRVR Status, Plans and Upcoming Changes
Hendrik:
--- Quote from: mattkhan on June 16, 2022, 04:53:19 am ---I thought I had posted what (I thought) was required earlier -> https://yabb.jriver.com/interact/index.php/topic,131214.msg909817.html#msg909817
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The discussion basically ended with the image being as you needed it, right? So all we need to do is add a way to apply that automatically based on the video aspect ratio and your lens factor?
Can you link me to the tech specs of such a lense or something similar so I can see how to best integrate it so it matches what the lens specification says?
--- Quote from: mattkhan on June 16, 2022, 04:53:19 am ---Aren't we talking about the same thing here? There was also a performance problem I found during that testing, has that been fixed now? comments around that (repeatable) performance problem are in the other thread nearby https://yabb.jriver.com/interact/index.php/topic,130905.msg911868.html#msg911868
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I can't really confirm or deny that, its been 6 months, lots has changed, and since the issue occured on your system. But performance changing based on tabbing in and out sounds like some weird graphics driver glitch, so it might well have been fixed with all the cleanup going on.
mattkhan:
--- Quote from: Hendrik on June 16, 2022, 06:07:25 am ---
I can't really confirm or deny that, since the issue occured on your system. But performance changing based on tabbing in and out sounds like some weird graphics driver glitch, so it might as well have been fixed with all the cleanup going on.
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Do you mean you couldn't reproduce this? I will retest with the latest build anyway
mattkhan:
--- Quote from: Hendrik on June 16, 2022, 06:07:25 am ---
Can you link me to the tech specs of such a lense or something similar so I can see how to best integrate it so it matches what the lens specification says?
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I use a lens like this https://www.prweb.com/releases/2009/05/prweb2449484.htm
It is a 1.33x horizontal expansion lens
The other main type used is a vertical compression lens such as https://www.panamorph.com/ which, if I remember correctly, are a 0.75x lens
Hendrik:
Horizontal Expansion and Vertical Compression should have the same outcome, shouldn't they? Both would take a picture in the native aspect ratio of the projector (16:9, eg), and make it "wider". The way they do it is different, but that doesn't change the properties for JRVR as I understand it.
Correct me if i'm wrong, but for most content this would only really offer the full benefits if we also have black-bar-detection, so you can actually benefit from using more screen space?
Of course even without that, you might want to use it, because you have the lens installed and it would be the wrong ratio otherwise, except you would end up getting pillarboxing in this case, unless you override the scaling mode to Crop.
Hendrik:
Actually, starting to look into how we do aspect ratio handling, it seems we already support anamorphic displays, it is just not named very well for this purpose, and hidden a bit.
Options -> Video -> Advanced -> Aspect ratio correction
Below you'll find the scale factors available right now, which we can easily extend if needed
No change: 1.0
1.33 to 1.78: 1.333..
1.33 to 1.60: 1.20
1.78 to 2.35: 1.321875
1.78 to 2.40: 1.350
The actual aspect ratios and factors it lists are just descriptive, it all turns into this one scale factor. So if your lens is setup to scale 16:9 (1.78) to cinemascope 2.40, there is an option ready to use there.
Combine that with the "Aspect ratio mode" option right below and you have a lot of control already (eg. setting it to Crop would let it fill the screen). Let me know if this works?
Ideally these should be per-screen settings in JRVR, but the entire aspect ratio/zoom handling is generic MC stuff that predates it, so that might be a change for later. But most people with dedicated projector setups likely don't mix and match much, or could use zones to deal with it.
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