It is currently 28 Mar 2024, 18:47




 Page 2 of 2 [ 36 posts ]  Go to page Previous  1, 2
Author Message
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 26 Jan 2017, 12:23 
Honest fan
Honest fan
User avatar

Joined: 29 Oct 2013, 15:56
Posts: 123
Location: United Kingdom
Has thanked: 5 times
Been thanked: 5 times
It was the TBC causing the lines and not interference. Turned it off and now clean


Last edited by kencol on 06 Dec 2017, 12:06, edited 1 time in total.
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 28 Jan 2017, 10:39 
Honest fan
Honest fan
User avatar

Joined: 29 Oct 2013, 15:56
Posts: 123
Location: United Kingdom
Has thanked: 5 times
Been thanked: 5 times
Edit from above. TBC was causing the lines. Turned off and clean image now


Last edited by kencol on 06 Dec 2017, 12:07, edited 1 time in total.
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 14 Feb 2017, 00:31 
Shows curiousity
Shows curiousity
User avatar

Joined: 27 Dec 2016, 23:17
Posts: 17
Location: United States
Has thanked: 6 times
Been thanked: 0 time
I have owned a few players. It might be worth looking into getting a older gas laser laserdisc player. I have always found them to have better video quality. But tend to have problems with disks that have rot.
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 12 Mar 2017, 11:45 
Honest fan
Honest fan
User avatar

Joined: 31 Mar 2015, 10:21
Posts: 78
Location: United States
Has thanked: 0 time
Been thanked: 1 time
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.png

All 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
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 13 Mar 2017, 22:34 
Honest fan
Honest fan
User avatar

Joined: 29 Oct 2013, 15:56
Posts: 123
Location: United Kingdom
Has thanked: 5 times
Been thanked: 5 times
Not too difficult especially if you just use the default CVBS profile (which is excellent). Just a case of connecting to the board via serial cable or USB using a terminal and typing CVBS to select input.
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 18 Mar 2017, 02:21 
Knows how to post
Knows how to post
User avatar

Joined: 30 Apr 2004, 20:08
Posts: 15
Location: United States
Has thanked: 0 time
Been thanked: 0 time
So this is just a bare board. Do I need to put it in enclosure?
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 20 Mar 2017, 18:22 
Honest fan
Honest fan
User avatar

Joined: 29 Oct 2013, 15:56
Posts: 123
Location: United Kingdom
Has thanked: 5 times
Been thanked: 5 times
Yes it's a bare board and best to put it in an enclosure.
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 24 Mar 2017, 21:35 
Honest fan
Honest fan
User avatar

Joined: 31 Mar 2015, 10:21
Posts: 78
Location: United States
Has thanked: 0 time
Been thanked: 1 time
I ordered this board and it arrived yesterday. Looks really great so far!

Anyone know how to adjust the brightness/contrast/color, however? I'm following the steps I can find online but I'm not able to make any visible changes to the video output.
_________________
DiscoVision Cultist

Players: Pioneer Elite CLD-59, Pioneer VP-1000
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 25 Mar 2017, 21:08 
Honest fan
Honest fan
User avatar

Joined: 29 Oct 2013, 15:56
Posts: 123
Location: United Kingdom
Has thanked: 5 times
Been thanked: 5 times
I've not tried to change colour or brightness registers but they should all be available through the AVES software.
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 31 Mar 2017, 18:45 
First post
First post
User avatar

Joined: 23 Mar 2017, 15:13
Posts: 1
Location: Lansdale (Philadelphia), PA, United States
Has thanked: 0 time
Been thanked: 0 time
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/
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 19 Jan 2019, 16:14 
Genuinely interested
Genuinely interested
User avatar

Joined: 07 Nov 2017, 05:22
Posts: 49
Location: United States
Has thanked: 9 times
Been thanked: 0 time
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
7842.jpg [ 102.05 KiB | Viewed 2803 times ]
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 19 Jan 2019, 16:45 
Jedi Master
Jedi Master
User avatar

Joined: 03 May 2004, 19:05
Posts: 8093
Location: Dullaware
Has thanked: 1218 times
Been thanked: 841 times
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.
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 20 Jan 2019, 16:24 
Genuinely interested
Genuinely interested
User avatar

Joined: 07 Nov 2017, 05:22
Posts: 49
Location: United States
Has thanked: 9 times
Been thanked: 0 time
I lowered the brightness in my video editing program so the level of the video from the 7842 is approx. the same as other video capture from the player direct (s-video from the X0). As evidence from the still, even when lowered you can still see more noise in the 7842 than with a direct feed.

I still haven't figured out how to adjust the brightness via the board itself. But it doesn't look like it will make much difference.

Does this look like RF noise?


Attachments:
Image2.jpg
Image2.jpg [ 54.98 KiB | Viewed 2776 times ]
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 20 Jan 2019, 18:00 
Jedi Master
Jedi Master
User avatar

Joined: 03 May 2004, 19:05
Posts: 8093
Location: Dullaware
Has thanked: 1218 times
Been thanked: 841 times
Don't know about RF.
Look at your picture, the bars in-between should be black like below.
All the black should be the same, if you see its boosted in your pic.

As for your 7482 board, I have no knowledge of this and can't help you.
Its hard to see the noise as to what it is. It could be RF but I don't know.

Do you get the noise when running this into your TV?
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 20 Jan 2019, 19:30 
Genuinely interested
Genuinely interested
User avatar

Joined: 07 Nov 2017, 05:22
Posts: 49
Location: United States
Has thanked: 9 times
Been thanked: 0 time
Judging the grey-section in the still I attached, can you see the extra noise that's in the 7842 vs. the X0 direct? I didn't have this noise with my Lumagen 2144, which has the same board inside I believe.
Offline
 Profile  
 
 Post subject: Re: Squeezing every bit of detail out of a laserdisc
PostPosted: 26 Jan 2021, 12:18 
Third post and above
Third post and above
User avatar

Joined: 31 May 2012, 19:54
Posts: 7
Location: Belgium
Has thanked: 2 times
Been thanked: 1 time
Great thread :thumbup:

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
Offline
 Profile  
 
Display posts from previous:  Sort by  
 Page 2 of 2 [ 36 posts ]  Go to page Previous  1, 2


Who is online

Users browsing this forum: Google [Bot] and 14 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to: