Devices > Video Cards, Monitors, Televisions, and Projectors
Assistance with Smooth Video Project?
RoderickGI:
--- Quote from: cowboydude99 on April 13, 2020, 03:49:43 pm ---However, this doesn't give me HDR or 4K!
--- End quote ---
I guess that would be consistent with Wer's excellent post:
--- Quote from: wer on April 12, 2020, 02:45:17 pm ---The JVC LX-UH1/B is manufactured by BenQ, and is a rebadged BenQ HT5550. This is a DLP projector that uses a 1920x1080 DMD and TI's "XPR" technology to pixel-shift the DMD to produce 3840x2160 images
--- End quote ---
The projector is really a 1920x1080 device pretending to be a 3840x2160 device, and the mechanism it uses to pretend causes stutter which you can see.
cowboydude99:
Yep... I guess I'm just hoping for something...
My only options are:
1. Find a '4k' projector that doesn't cause this stutter.
2. Use something like SVP4 Pro, and lose HDR, and introduce artifacts.
Option 1 seems better to me! I don't know how to determine which 4K projector won't have the same issue.
I think there some companies that may ship units with a 14-30 day free return.
I guess it is what it is!
Thank you all so much.
tij:
turning e-shift off was just a wild guess on my part … does it really noticeably reduce stutter?
Regarding 4K … when you turn off e-shift, do you noticed picture quality reduction from your NORMAL viewing distance … if not, then HD is good enough
Regarding HDR … understand that when TV or projector say it is showing you HDR, all that means is TV or projector is doing tone mapping (HDR source has BT2020 color space, which none of commercial display can display fully … so those display need to map HDR colors to something they can display - aka compress color and brightness, which is tone mapping) … MadVR has excellent tone mapping algorithm - especially for projector application
So MadVR can downscale 4K to HD and tone map HDR
PS. when MadVR does tone mapping, projector/display wont be saying that material is HDR since they are receiving signal that they can display (and hence they do not do tone mapping) … people then assume that this is SDR and bad
Trust your eyes and not what equipment is telling you! … Having said that be aware that sometimes what you are seeing is just bad mastering or bad filming technique!
cowboydude99:
Thanks. Yes, I'm that way- it doesn't say HDR, so it is bad!
The source material are all BD high-quality backups. Some are actual disks, but same issue.
Yes turning off the eShift really looks good, but yes, I can definitely see there is a much lower quality image.
I am only 9' away from a 100" screen. I could have bought a much lower cost projector if I was going to limit it to 1080p.
I don't know if there is any solution here. Maybe I just have a bad unit?
wer:
I doubt your projector is damaged, I think it's working as designed.
If you're sitting that close to a 100in screen, you are going to see everything. You're well within the range to see the 4k pixels.
For that application you should get the highest quality projector you can, something that is native 4k, and has native support for all the needed OUTPUT framerates, not just input framerates. At a minimum, you want something that can project images at the following rates: 23.976, 24, 29.97, 59.94, and 60Hz. If you are in Europe or plan on watching European discs, add 25 and 50Hz.
There are laser projectors, LCoS projectors, 3-chip DLP projectors, all sorts.
You will need to do your own research on what projector is best for you. That's what magazines, stores, and Google are for. Try and find one where the testing includes measurements, not just a reviewer saying "It looks great!" You can also try asking on AVSforum. If possible see it before you buy; take a disc to the store. And buy from someplace with a good return policy. But learn from this first experience.
Good luck...
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