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. |
23rd February 2010, 12:50 | #2221 | Link |
Registered User
Join Date: Dec 2009
Posts: 177
|
To be more precise, what I'm looking for is true 0-255 output with both WTW and BTB with no luma conversion.
But I found that my graphics card ATI HD5770 only output 16-235 if I choose RGB pixel format (with or without WTW/BTB), so the luma is compressed by ATI. |
23rd February 2010, 12:51 | #2222 | Link | |
Registered User
Join Date: Feb 2010
Posts: 127
|
Quote:
Are you saying that it's impossible to use any other renderer than overlay with an ATI Card without having luma compression??? What if I use YCrCb 4:4:4 output and madVR renderer?? Last edited by cyberlolo; 23rd February 2010 at 12:56. |
|
23rd February 2010, 12:51 | #2223 | Link | |
Registered User
Join Date: Feb 2010
Posts: 127
|
Quote:
1) Set madVR to PC Levels without using ffdshow's levels filter. That way, I won't have banding, but the output will be calibrated at 16-235, so I'd lose wtw data. 2) Set madVR to TV Levels, use ffdshow's Levels Filter to have an output calibrated at 16-245 (preserving wtw), but with banding (is it true that it's not noticeable in movies???) Which option is better?? |
|
23rd February 2010, 12:53 | #2224 | Link | |
Registered User
Join Date: Dec 2009
Posts: 177
|
Quote:
http://forum.doom9.org/showthread.php?t=152634 |
|
23rd February 2010, 12:57 | #2225 | Link | |
Registered User
Join Date: Dec 2009
Posts: 177
|
Quote:
1. HTPC outputs 16-235 but contains BTB/WTW (0-255 compressed to 16-235) 2. HTPC outputs 16-235 with NO BTB/WTW and grey black/washed white(add white and black to 16-255 to make it 0-255 and then compressed to 16-255, this is evil. If you remember ATI CCC 9.12 fixed this problem for PowerDVD, before you always get grey black/white) 3. HTPC outputs 16-235 with NO BTB/WTW (16-235 expanded to 0-255 then compressed to 16-235, typical if you choose RGB output) 4. HTPC outputs 0-255 with BTB/WTW (IMO, this is the best option. It outputs everything from the video without luma conversion and your display decides if BTB and WTW should be cut) 5. HTPC outputs 0-255 with NO BTB/WTW and 16-235 is expanded to 0-255 (16-235 expanded to 0-255, no further compression, I have never seen such case) 6. HTPC outputs 0-255 with NO BTB/WTW and 16-235 is NOT expanded to 0-255 (add black and white to 16-235, no further compression, I have never seen such case) See my discussion here: http://www.avsforum.com/avs-vb/showt...79134&page=174 When I choose RGB with my ATI 4850/5770, it always outputs 16-235 with or without BTB/WTW. |
|
23rd February 2010, 13:13 | #2228 | Link |
Registered User
Join Date: Feb 2010
Posts: 127
|
And how can I know if it's my case too? With RGB Full I'm getting BTB/WTW, and with YCrCB 4:4:4 I get THE SAME BTB/WTW (I'm using a test pattern who shows the 0-20 and 230-254 levels). So how can I see the difference? I'm almost sure that Full RGB outputs uncompressed 0-255 with HD4850 and Catalyst 9.12...
Last edited by cyberlolo; 23rd February 2010 at 14:11. |
23rd February 2010, 13:48 | #2229 | Link |
3 eyed CRT supporter
Join Date: Jan 2008
Location: Or-strayl-ya
Posts: 563
|
I have found that using either the video driver Gamma or Powerstrip gamma will not cause banding, as long as you use a linear curve. In powerstrip in particular you will get banding if you do a non linear gamma curve (known issue with Powerstrip gamma, it's 8 bit).
|
23rd February 2010, 14:01 | #2231 | Link | |
Registered User
Join Date: Dec 2009
Posts: 177
|
Quote:
|
|
23rd February 2010, 14:09 | #2232 | Link | |
Registered User
Join Date: Feb 2010
Posts: 127
|
Quote:
We'll be patient, but don't forget us, please, and release it as soon as you can! |
|
24th February 2010, 18:04 | #2233 | Link |
Registered User
Join Date: Feb 2010
Posts: 127
|
Well, after using ffdshow's levels filter yesterday and today, I've watched Star Wars The Revenge of the Sith, and episode 8 of Band of Brothers, both BD-Rip at 1080p. And while Band of Brothers was perfect, I could see some artifcats (banding) in some scenes of Star Wars. Those artifacts disappeared when I disabled levels filter (just to test it), so they were caused because of it.
yesgrey, do you have banding using your new cr3dlut to calibrate at 16-245? In other words, can we expect not having banding when you release your new version and we can calibrate with it? Last edited by cyberlolo; 24th February 2010 at 23:36. |
26th February 2010, 11:15 | #2239 | Link |
Registered User
Join Date: Feb 2006
Posts: 293
|
I would say generally no, but it also depends on what scaling do you want to use and your display resolution, I guess. In my experience, 3870 can't handle Spline64 on 2560x1600, but 5770 does, for example. So if your resolution isn't too high, or you're happy with bilinear/bicubic, maybe.
__________________
Spec: Intel Core i5-3570K, 8g ram, Intel HD4000, Samsung U28D590 4k monitor+1080p Projector, Windows 10. Last edited by Hypernova; 26th February 2010 at 11:18. |
Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
Thread Tools | Search this Thread |
Display Modes | |
|
|