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forty-six-and-2
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Post subject: Re: Squeezing every bit of detail out of a laserdisc Posted: 12 Mar 2017, 11:45 |
Honest fan |
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Joined: 31 Mar 2015, 10:21 Posts: 78 Location: United States Has thanked: 0 time Been thanked: 1 time
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acuozzo wrote: I don't think you can do better than the ADV7842 for a 3D comb filter. It's a really new design (2011 or so, IIRC) and I can't get the thing to artifact. It's far better than the TI TVP-5160; in a different league. The member here named substance agrees. It's present in the Lumagen 2144, but that's rather expensive. I use the EVAL-ADV7842-7511 evaluation board to do captures from my Pioneer LD-S2. I'm moving things around at the moment, so I don't have it hooked up, but here's what I could pull from my significantly-more-noisy Pioneer LD-V8000 a few months ago with it: http://i.imgur.com/eyRabWU.pngAll of the registers are at default values here. It does that without being tuned to the 8000 and keep in mind that I can't get the thing to artifact. How difficult is the ADV7842 eval board to set up and use? I'm very much interested in using it for creating transfers, and possibly just for watching LaserDiscs on my UHD TV, but reading the documentation makes it sound intimidating. Sort of expensive, as well, but I'd be willing to pay the money if it works without making me tear my hair out.
_________________ DiscoVision Cultist
Players: Pioneer Elite CLD-59, Pioneer VP-1000
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jimdproductions
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Post subject: Re: Squeezing every bit of detail out of a laserdisc Posted: 31 Mar 2017, 18:45 |
First post |
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Joined: 23 Mar 2017, 15:13 Posts: 1 Location: Lansdale (Philadelphia), PA, United States Has thanked: 0 time Been thanked: 0 time
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acuozzo wrote: kencol wrote: That's interesting. Do you change the comb filter parameters much depending on disc/player you're using or are the default settings of the board already optimised? The default settings are fantastic, but it's usually best to dial it in per player since it would just be a pain in the butt to try to do it per title. My order is: 1. Initially dial-in your settings against the zone plate on GGV1069 (no motion) 2. Now, dial back your settings if you get artifacts with a very sharp shot change with significant changes in chroma (large motion) 3. Now, dial your settings back up a bit against the Snell & Wilcox Zone Plate on Video Essentials (medium motion) 4. Finally, dial back your settings further if you get artifacts with the ballerina sequence on Video Essentials (small motion) Sorry for the "noob" question, but what specific settings do you adjust to optimize the comb filter? (Both in general and on the ADV7842?) I got my board yesterday and I'm looking to perform captures from my CLD-95. Unfortunately, I don't have the VE laserdisc (yet), but using a DMR-ES10 composite out with DVE, the default cvbs setting on the eval looks great on the stationary Snell & Wilcox test pattern. However, I get lots of rainbows on the motion test...
_________________ http://jimdproductions.com https://www.linkedin.com/in/jimbdavispe/
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clashradio
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Post subject: Re: Squeezing every bit of detail out of a laserdisc Posted: 19 Jan 2019, 16:14 |
Genuinely interested |
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Joined: 07 Nov 2017, 05:22 Posts: 49 Location: United States Has thanked: 9 times Been thanked: 0 time
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I just received my EVAL 7842 board and it seems noisier than I'd expect (especially in the black areas). It's in a plastic case w/holes drilled. I bought a can of MG Chemicals Super Shield, but haven't applied it yet. I couldn't find any copper tape in case I wanted to use that as an alternative to the spray. Attached is a pic from the 7842. Seems I can't attach more than one. I wanted to show how it looks direct from the X0 using the default comb filter settings, & from the 7842. You would notice more fuzz/noise in the black area of the 7842. Sure, by using HDMI seems to give a brighter picture which may make noise more noticeable, or I guess you could look at the opposite way and a darker pic (s-video out from X0) will hide noise more. Any ideas? Attachment:
7842.jpg [ 102.05 KiB | Viewed 2803 times ]
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rein-o
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Post subject: Re: Squeezing every bit of detail out of a laserdisc Posted: 19 Jan 2019, 16:45 |
Jedi Master |
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Joined: 03 May 2004, 19:05 Posts: 8093 Location: Dullaware Has thanked: 1218 times Been thanked: 841 times
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Turn your brightness down and you won't see the noise Have you used Video Essentials to make sure you have calibrated your set to LD. Also the image looks pretty much how LD should look, just a little too bright. AND another is adjust your sharpness, it could be too high, I think on my TV I have it turned way way down, even further than one would expect.
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laurentm
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Post subject: Re: Squeezing every bit of detail out of a laserdisc Posted: 26 Jan 2021, 12:18 |
Third post and above |
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Joined: 31 May 2012, 19:54 Posts: 7 Location: Belgium Has thanked: 2 times Been thanked: 1 time
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Great thread I don't know how I missed this eval board. I still have my LD collection and my CII died a few months ago. I would have loved to replace my CII with that board. It is now impossible to order Laurent
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