Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
24th May 2016, 17:30 | #38141 | Link | ||
Registered User
Join Date: Dec 2011
Posts: 1,812
|
Quote:
High super-xbr sharpness seems to tend more to the "knot" artifacts which are one of super-xbr's peculiarities (like e.g. the weird line doubling that can happen with NNEDI3). Anti-ringing filter for super-xbr has received some good progress in the last months. Quote:
My goal was to achieve a similar sharpness as with NNEDI3 + SR 3 or 4 while still being able to use the deringing filter. The problem is that high SR srength can lead to very ugly artifacts in combination with deringing filter, so I tried out super-xbr 150 instead of high SR strength and it looks very good to my eyes. Deringing and SR 1 give some very nice anti-bloating effect with super-xbr 150. |
||
24th May 2016, 18:56 | #38142 | Link |
Registered User
Join Date: Oct 2015
Posts: 88
|
This 2.4 vs 2.2 battle is overall stupid.
Rec709 movies are supposed to be seen with 2.2 gamma. If you want to raise the gamma anyway, enable "dynamic contrast" on your TV, just be sure it's originally calibrated to 2.2. Unless ur TV is very old or a monitor calibrating to 2.4 has no point as modern TVs with dynamic contrast can handle "dynamic" higher gamma better than pure 2.4 gamma (atleast 2013+ models), basically less black/white crush. Last edited by XTrojan; 24th May 2016 at 18:59. |
24th May 2016, 19:57 | #38143 | Link |
Registered User
Join Date: Oct 2015
Posts: 99
|
What are the practical differences between the tags levels, blacklevel and brightness in correcting washed out blacks in an encode that otherwise has flawless PQ? Mediainfo reports "limited" but the black level is definitely off. Which tag would be the preferred option to fix this?
|
25th May 2016, 03:51 | #38144 | Link |
Registered User
Join Date: Sep 2004
Posts: 146
|
After cropping black bars, it seems possible to place txt/image subtitles over/under video area with potplayer's built-in subtitle renderer. I only enabled two options in madVR settings: "automatically detect hard coded black bars", "crop black bars" and let potplayer control the position of subtitle. It works well but there is one thing cannot be resolved within potplayer. The conflicting option of potplayer is to reserve two lines for bottom margin for subtitles. Could you look into the issue?
|
25th May 2016, 11:11 | #38145 | Link | |
Registered User
Join Date: Nov 2011
Posts: 187
|
Quote:
I am happy using the deringing option, which I have globally enabled for all content. The good thing is it doesn’t do any harm when the content doesn’t have any obvious ringing. |
|
25th May 2016, 12:03 | #38146 | Link | |
Registered User
Join Date: Sep 2013
Posts: 919
|
Quote:
All major studios calibrate and grade to 2.2, as noted by many professional colorists on the AVSForum board.
__________________
System: i7 3770K, GTX660, Win7 64bit, Panasonic ST60, Dell U2410. |
|
25th May 2016, 13:56 | #38147 | Link | |
Guest
Posts: n/a
|
Quote:
A film on high-end studio TV's mastered to PL 2.2 gamma will NOT look the same as the same film on perfectly calibrated consumer TV's with the same PL 2.2 gamma. Hence, the whole concept of "Calibration is all about making sure you see the film as it was mastered" goes out-the-window right there. That is why BT.1886 gamma exists - to accommodate consumer TV's. Since we established consumer's (most consumers I guess) CANNOT see films as they were mastered due to terrible black levels no matter what gamma is used, it makes more sense to use mathematically and visually accurate BT.1886 gamma that takes black levels into consideration. You also make a false assumption that film mastering is perfect, but it is not. There are plenty of badly mastered films that looked washed out with both BT.1886 and PL 2.2 gamma's, but BT.1886 does look slightly more washed out. Watch Batman Begins, The Dark Knight, and The Dark Knight rises. With BT.1886 gamma NOTHING is washed out in those films, as well as plenty of others, like Interstellar, Mad Max, Blu-Ray version of the old X-Files, and other high-grade high quality movies. Then watch the new recently released The Thing (the prequel). Even if you use PL 2.5 gamma to watch that film, it will look washed out because that film uses high grays for something that should've been black. |
|
25th May 2016, 14:06 | #38148 | Link |
Registered User
Join Date: May 2011
Posts: 164
|
I am very interested in the gamma discussion myself but this might be something to talk about in a different thread. I've been reading about it here and on AVS and I'm frankly still very confused about the whole 709/1886, 2.2/2.4 thing. There doesn't seem to be any general consensus whatsoever.
|
25th May 2016, 14:44 | #38149 | Link |
Registered User
Join Date: Sep 2013
Posts: 919
|
BT.1886 is terrible (IMO).
No two displays will result in the same curve. Black Compensated Gamma curve makes sure that from a certain point all displays are equal. Each display has different black level, but above say 10 nit (variable by user) they are all equal, that's why compensated gamma cure is much closer to reference than BT.1886. How much should the black compensated gamma curve compress the shadows? This is a personal taste but the result always looks much more contrasty than 1886 without crushing/clipping any black steps at the bottom. The sRGB curve is a Black Compensated 2.2 Gamma curve, and IMO it looks better than BT.1886 on a 1000:1 typical LCD display. If you want to discuss this let's start a new thread and I will gladly show you with pictures and HCFR plots my claims.
__________________
System: i7 3770K, GTX660, Win7 64bit, Panasonic ST60, Dell U2410. Last edited by James Freeman; 25th May 2016 at 15:01. |
25th May 2016, 16:48 | #38151 | Link | |
Soul Seeker
Join Date: Sep 2013
Posts: 716
|
Quote:
|
|
25th May 2016, 18:18 | #38152 | Link |
Registered User
Join Date: Sep 2013
Posts: 919
|
Come to the SDR Display EOTF (Gamma 2.2/2.4 or BT.1886) thread.
__________________
System: i7 3770K, GTX660, Win7 64bit, Panasonic ST60, Dell U2410. |
26th May 2016, 03:12 | #38156 | Link | |
Registered User
Join Date: Aug 2015
Posts: 2
|
Quote:
A Frame rate increase of 30% for an OC 1080 , when compared to a Titan X - would that not translate into more extreme settings for MADVR? |
|
26th May 2016, 06:54 | #38158 | Link |
Registered User
Join Date: Oct 2015
Posts: 99
|
OK, I found out using blacklevel tag can make the washed-out picture of a suboptimal encode look better whereas levels seems to do nothing to it.
Some questions though: 1) How does blacklevel work exactly - it compresses/expands the range of blacks below/above 16? 2) When correcting a washed-out picture using blacklevel, should whitelevel or some other parameter be adjusted too to compensate (and if yes, how/why exactly in relation to blacklevel?) |
26th May 2016, 10:53 | #38159 | Link | |
QB the Slayer
Join Date: Feb 2011
Location: Toronto
Posts: 697
|
Quote:
QB
__________________
|
|
26th May 2016, 11:41 | #38160 | Link | |
Registered User
Join Date: Mar 2002
Posts: 2,323
|
Quote:
__________________
Ryzen 5 2600,Asus Prime b450-Plus,16GB,MSI GTX 1060 Gaming X 6GB(v398.18),Win10 LTSC 1809,MPC-BEx64+LAV+MadVR,Yamaha RX-A870,LG OLED77G2(2160p@23/24/25/29/30/50/59/60Hz) | madvr config |
|
Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
|
|