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. |
25th December 2012, 12:51 | #16563 | Link | ||
Registered User
Join Date: Apr 2008
Posts: 546
|
Quote:
With catmull rom, there is more aliasing than lanczos if you see red bars. I don't understand why catmull rom would be better than lanczos. catmull rom lanczos Quote:
Is it usefull to turn off or is better to turn off? For the max quality other option must be turn off or tunr on? 2)In exclusive mode settings what is the interest of "present several frames in advance" option? I must turn on or tunr off? Thanks. Last edited by ikarad; 25th December 2012 at 12:59. |
||
25th December 2012, 13:40 | #16564 | Link | ||||
Registered User
Join Date: Dec 2011
Posts: 1,812
|
Quote:
With disabled I have a less stable GPU usage. It can be lower, but there can be also spikes (~60% instead of ~50%). That's why I think it should stay enabled by default. Quote:
Quote:
Quote:
|
||||
25th December 2012, 14:23 | #16565 | Link | |||||||
Registered Developer
Join Date: Sep 2006
Posts: 9,140
|
Quote:
> it means that more demanding videos are dropping > frames, so I would have to lower my settings if I > disabled "use a separate device for presentation". I suppose this was a guess based on the rendering time numbers reported by madVR. What you could do is to actually test whether you can find a situation where there are actually dropped frames in real life with "use a separate device for presentation" turned off while there are no frame drops with it turned on. Quote:
Quote:
Quote:
Quote:
Quote:
Generally I agree with you that Lanczos is better for downscaling than Catmull-Rom. However, the situation is a bit different when using linear light. There Lanczos simply produces too many ringing artifacts, even with AR enabled. When not using linear light, Lanczos is probably better than Catmull-Rom, but also slower. Now the question is whether the benefit of linear light downscaling is higher or the benefit of lower aliasing with Lanczos. Quote:
For most users having it turned on is the better solution. Leave it that way if you have no problems with it. |
|||||||
25th December 2012, 14:54 | #16567 | Link | |
Registered User
Join Date: May 2009
Posts: 212
|
Quote:
Does madVR just pre-calculate all (possible combinations of) coefficients at all pixel positions for the set ratio, and the pixel shader code just feeds them into registers according processed pixel position upon doing inner-product calculation? With my ION (GF9300) in window mode, it is also noticed one minor situation still exists since 0.85.3 (if I don't remember it wrong...) . If MPC-BE v1.0.3.1 is terminated with Alt-F4 during playback, the red message read like dxva decoding surface failure often pops up. If the playback is paused or has ended, there is no such red text during player window closing. My HTPC system (GTX260+) is set with full-screen-exclusive playback by default. It may be the reason why I never notice the same text on it even MPC-BE is terminated in the same way. |
|
25th December 2012, 14:56 | #16568 | Link |
Registered User
Join Date: Dec 2008
Posts: 496
|
madshi, I really like that you optimized Jinc 3, especially for chroma. Is there anything that can be done to improve performance with Jinc 8 on chroma or luma? I know that this is still rarely used (mainly because of itīs performance), but from 6233638īs testing some pages back, it really looks very good in comparison to the other algorithms. It seems pretty useful for some SD content (where you need higher scaling factors).
I am refering to this post from him. PS: For some reason, after replacing 0.85.4 with 0.85.5 (I always copy and replace all files in the madVR folder) the option "store custom pixel shader results in 16bit buffer instead of 32bit" was set, even though I am pretty sure I didnīt activate it in 0.85.4. Since I couldnīt reproduce it with replacing 0.85.4 with 0.85.5 again, maybe I accidentally activated it before. PPS: I wish you a happy new year in advance and thanks a lot for your time and dedication developing this great renderer! Last edited by iSunrise; 25th December 2012 at 15:01. |
25th December 2012, 15:10 | #16569 | Link | |||
Registered Developer
Join Date: Sep 2006
Posts: 9,140
|
Quote:
Quote:
Quote:
|
|||
25th December 2012, 15:15 | #16570 | Link | ||||
Registered User
Join Date: Dec 2012
Location: Neverland, Brazil
Posts: 169
|
Quote:
Quote:
Try with this little sample that I used in LAV thread which seems to be the one where it happens often. Quote:
Quote:
It's just like madshi said, I did try with Lanczos but the results were not really what I expected. 6233638 also pointed out that Catmull-Rom is the most accurate downscaling algorithm to date.
__________________
madVR scaling algorithms chart - based on performance x quality | KCP - A (cute) quality-oriented codec pack Last edited by Niyawa; 25th December 2012 at 15:27. Reason: Typos. |
||||
25th December 2012, 15:18 | #16571 | Link | |||
Registered User
Join Date: Apr 2008
Posts: 546
|
Quote:
I just refer to the red and green bars in madvr for result. With lanczos red bars are less important than with catmull. It's why I ask. Maybe you can correct red bars with lanczos because it can bring mistake understanding. Quote:
I have a gtx560. Quote:
|
|||
25th December 2012, 15:36 | #16572 | Link | ||
Registered User
Join Date: Apr 2008
Posts: 546
|
Quote:
1) on http://www.homecinema-hd.com/reclock.html guide tell that sampling rate must be at 96khz. In your guide, it's 48khz. I would like to know why there is any difference between the two advice. What is the better? 48 or 96khz? I have sound blaster xfi titanium. 2) in your guide your said about reclock: Quote:
What are the problems with reclock combined with madvr? Have you seen any problem with reclock? Have you an example to see if I have thse same problem with my PC? |
||
25th December 2012, 15:45 | #16573 | Link |
Registered User
Join Date: Jan 2007
Posts: 530
|
Some low-end Llano feedback:
SD material (interlaced video and NTSC film) upscaling to 1600x900, using Jinc3/AR for image up, Jinc3 chroma up. I'm simply watching queues, dropped frame count and playback (1) I don't see a difference with SD content. However, interlaced video source requires that I drop AR or change to Lanczos4/AR for trouble-free playback. (2) Same as above. (3) Does not appear to have any impact that I can see under these scenarios (though obviously NTSC film with DXVA2 decoding is not available) I can just say, awesome perf improvements. Jinc/AR was not usable on this machine previously for image up with SD material. Seems very solid now. Great work. |
25th December 2012, 15:46 | #16574 | Link | |
Registered User
Join Date: Jul 2011
Posts: 83
|
Quote:
The Options don't make a difference. |
|
25th December 2012, 15:57 | #16575 | Link | |
Registered User
Join Date: Dec 2012
Location: Neverland, Brazil
Posts: 169
|
Quote:
Then I guess it's a good go. There's not really "problems". madshi explained that madVR isn't optimal for 24p@60hz, and since this was the very reason it was in the guide, I'm going to remove it. Using it won't make any difference to the video pattern it seems, so you can keep using it like nothing happened too.
__________________
madVR scaling algorithms chart - based on performance x quality | KCP - A (cute) quality-oriented codec pack |
|
25th December 2012, 16:24 | #16576 | Link | ||
Registered User
Join Date: Apr 2008
Posts: 546
|
Quote:
Quote:
|
||
25th December 2012, 16:30 | #16577 | Link |
Registered User
Join Date: Dec 2012
Location: Neverland, Brazil
Posts: 169
|
You basically don't need ReClock to begin with. 23.976 and 29.970 fits perfectly in a 120hz screen. Unless you watch DVD with 25fps, that ReClock would adapt to 24.
Btw, could you tell me what is your monitor? I'm planning to import a 120 hz soon, so I kinda searching for some reasonably cheap prices. Send me through private messages, let's not spam this thread with non-related stuff.
__________________
madVR scaling algorithms chart - based on performance x quality | KCP - A (cute) quality-oriented codec pack |
25th December 2012, 16:36 | #16578 | Link | ||
Registered User
Join Date: Apr 2008
Posts: 546
|
Quote:
I don't know why but I noticed it. Quote:
|
||
25th December 2012, 16:57 | #16579 | Link | |
Registered User
Join Date: Dec 2012
Location: Neverland, Brazil
Posts: 169
|
Quote:
I said PM sir, but okay. Those are expensive as fuck, and that Asus doesn't seem to compensate for the price. At least not in the reviews I saw. Thanks either way, I wonder if I'll ever find a 120 hz monitor between $200~250.
__________________
madVR scaling algorithms chart - based on performance x quality | KCP - A (cute) quality-oriented codec pack |
|
25th December 2012, 17:40 | #16580 | Link | |
Registered User
Join Date: Sep 2012
Location: Turin
Posts: 104
|
Quote:
1) Mine too (the difference is however minimal). 2) The GPU load is the same and I have no glitches with it being on or off. 4) I think while disabled GPU load is slightly worse (the difference however it seems to be VERY minimal).
__________________
Raven RVZ01 * i7-4790k * 16GB RAM * Zotac GTX 970 4G * SSD 850Evo 500GB * Blu-Ray Burner Slot-In * PSU SFX 80+ Gold 450Watt * Windows 10 64bit * MPCHC+MadVR+SVP * Panasonic 50" VT30 ^^ |
|
Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
Thread Tools | Search this Thread |
Display Modes | |
|
|