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16th October 2012, 16:29 | #14821 | Link |
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I am about to calibrate my TV/htpc. I know this is not quite right to do through mpc/madVR but I do not own a blu-ray player... yet.
When I calibrate through mpc/madVR would it be most optimal to choose 'this display is already calibrated' choose BT.709 select pure power curve 2.20 and 'disable GPU gamma ramps'? I calibrate using X-Rite i1Display Pro, ColorHCFR and AVS HD 709 - Blu-ray & MP4 Calibration |
16th October 2012, 17:50 | #14822 | Link | |
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Quote:
If madVR gets a checkbox to disable the file tokens it would be nigh useless since most users would not know about the filename tokens in the first place and they wouldn't check the option. But if it is checked by default, then madVR would lose a fair bit of functionality since the filename tokens would be disabled. Basically by the time you know about the option to disable the filename tokens then you would also know that you could have done the same by just renaming the files yourself. It's better to document this function thoroughly. If it hasn't been done already, perhaps a status in the on screen display whenever madVR follows a filename token to set the frame rate? |
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16th October 2012, 18:07 | #14823 | Link | ||
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As I said, it's difficult outside of artificial tests, or recorded game footage. (most of the game footage I use has gone through an analogue video chain and is quite compressed, so it's not the same as an "artificial" screenshot) Most other content that needs scaled up already has a ton of ringing, and I find scalers like Jinc/Spline far too sharp for it. I've had a quick look over some "problem discs" and so far it seems that with most real-world DVD content, Jinc is on-par or better than Spline as far as ringing is concerned with the anti-ringing filter enabled, but much better on aliasing. (as expected) I still find it far too sharp for SD content, and tend to go back to SoftCubic 80 though. Separate HD/SD scaling options would be nice, as I quite like Jinc 3 anti-ring for HD, and SoftCubic 80 for SD. Quote:
The "OS hacks" are required to try and get DVD playback working in madVR, and now only require changing a registry key to point it to a different DVD Navigator instead of replacing system files. If you get this package, and use the executable to point it to the qdvd.dll contained within (Windows XP's DVD Navigator) DVD playback works, but it has a tendency to crash on seeking (video keeps playing, but MPC-HC is unresponsive) and menus don't always work correctly. There was a brief period where you could get Windows 7's DVD Navigator working with specific builds of LAV Filters, but Nevcariel doesn't know what it was that enabled them to work, and he apparently has the Windows 7 DVD Navigator working correctly on his system in all current builds of LAV Filters. (but I can't see how - I only have madVR and LAV Filters running in my tests on a fresh install of Windows) |
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16th October 2012, 18:10 | #14824 | Link |
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He wasn't answering about Macrovision errors, but playback errors/player lockups when using the "hack", which someone inquired about.
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LAV Filters - open source ffmpeg based media splitter and decoders |
16th October 2012, 18:31 | #14825 | Link |
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No, the muxer/encoder often take whatever the user inputs : bullshit in -> bullshit out.
On playback the demuxers/splitters have (often) no choice then reading the flags from the file ; there is no way for the splitter to know whether these are correct for this file are not. Some things like FPS can be "measured" for a few frames ; the splitter can use these as an "approximation" for the real FPS, without being sure of it; This all makes that playback will look very bad : playing to fast/slow, shakey, combing, 3/2 jitter + not smooth, blurry, wrong colors, artifacts from de-interlacing progressive content , .... Last edited by Pat357; 16th October 2012 at 19:20. |
16th October 2012, 19:37 | #14826 | Link | |
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Quote:
PS: I´m on Windows 7 x64 Ultimate. Playback chain is only LAV and madVR (using PotPlayer). @madshi: What I would really find useful is to have like 2 different upscaling setups, where either madVR can automatically choose between them (e.x. source: movie resolution) or/and the user can toggle (override) between them if needed. I think you already mentioned something like that in your last posts. I usually prefer sharp algorithms, however, there is some content out there that just scales very badly to 1080p (or in the future even higher), where you need to think a bit differently. I love your work on Jinc, excited to see where you can take it. Last edited by iSunrise; 16th October 2012 at 19:41. |
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16th October 2012, 20:17 | #14827 | Link | |
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Quote:
My filter list with DVDs is:
I just reinstalled Windows 7 a couple of weeks ago, after trying out Windows 8 (too many compatibility issues for me) so it's not like I have anything else installed on my system that should be causing it. Are you running with an AMD or Nvidia card in your system? That's about the only other thing I can think it could be that is causing this to work fine on some systems, and not at all on others. |
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16th October 2012, 22:38 | #14828 | Link | |
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Thanks for your help |
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17th October 2012, 00:38 | #14829 | Link | |
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17th October 2012, 02:58 | #14830 | Link | ||
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While it's probably not what you were looking for, as it's still relatively artificial, here are a couple of samples that show ringing around the edge of subtitles that the current anti-ringing filter doesn't catch. (Munich DVD)
I would say that Spline 3 AR exhibits slightly less ringing in these samples compared to Jinc 3 AR. Mitchell-Netravali AR shows minimal ringing, and SoftCubic 80 shows negligible ringing with these images. Anything else is rings too much for my tastes. (but I'm pushing myself to use Jinc 3 to look for things like this) Jinc 3 AR and SoftCubic 80 are the only resamplers that show good anti-aliasing properties on the diagonals. (but the source is very aliased) As with most DVDs though, even if the ringing introduced by Jinc were eliminated, I think it is still too sharp to use due to the amount of ringing already encoded in the source. Quote:
I can only get the XP DVD Navigator (qdvd.dll set using the tool provided with dslibdvdnav) or dslibdvdnav working with madVR, neither of which are great solutions. The XP DVD Navigator crashes on seeking 90% of the time (video plays, but the player becomes unresponsive) and dslibdvdnav doesn't work with a large number of DVDs that I own. There was a brief period where an older version of LAV Filters worked with the Windows 7 DVD Navigator, and that played most of the discs I tried without issue, however that has now broken for me in updated versions of LAV Filters. (but there are new features/bugfixes that I need from them) Quote:
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17th October 2012, 08:56 | #14832 | Link |
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Recently, I noticed some tearing with Madvr in the upper part of the image (mainly during horizontal movements):
These (sorry) rather unclear photo's show it on my TV. I don't know if it happens with HD / no PAL material as well as I've been mainly watching SD (PAL) content for the last weeks which I don't do very often. As I don't very often watch PAL material its also possible that this problem already was present before the more recent Madvr builds although I'm inclined to think it has started happening with the more recent builds. It's very difficult to reproduce because it can take hours before it happens. When I restart the player, the problem is gone. The TV is set to the same refreshrate as the source material by Madvr and has a very low deviation (< 0.001%). I'm using the latest Nvidia WHQL drivers and it happened with the previous one as well. The GPU is a GTX670 and the player is Zoomplayer 8.16 And I'm also using the HPET settings which were posted earlier in this thread. Madvr is using all the default options for as far as I can tell. |
17th October 2012, 10:46 | #14833 | Link |
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Crash with madVR v0.84.3 & MPC-HC ISR r6086
http://www.mediafire.com/?a9698iv9rucvr6r Doesn't seem easily reproducible, so this could be a MPC-HC ISR bug and not a madVR bug. It crashed when the MPC-HC ISR was trying to display a line right after a chapter point. The line in question specified a missing font, so the MPC-HC ISR probably crashed when attempting to load or render the gdi fallback font. |
17th October 2012, 15:15 | #14834 | Link | |
Nicolas Robidoux
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Quote:
On the other hand, I imagine that Mathias has something else to do than add such a "special purpose" filter: Unless the image is pixelated and/or full or ringing/halo almost to the point of being considered "defective", this filter is too soft, at least for luma. Last edited by NicolasRobidoux; 17th October 2012 at 15:18. |
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17th October 2012, 15:41 | #14835 | Link |
Nicolas Robidoux
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Location: Montreal Canada
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I actually have programmed a relative of EWA quadratic B-spline smoothing, called VSQBS (Vertex Split with Quadratic B-Spline Smoothing) which is an unbelievably cheap scheme (my guess is would be screamingly fast on a GPU), in a different library than ImageMagick, namely VIPS (Virtual Image Processing System) and its GUI NIP2 (New Image Processor 2). It has slightly better jaggy reduction, at the cost of a touch more blur. http://web.cs.laurentian.ca/nrobidoux/misc/madVR/screenshot179sapVSQBS.png
VSQBS is not for downsampling. To get a similar scheme for downsampling, you should switch to EWA or tensor quadratic B-spline smoothing. When enlarging, VSQBS uses the 8 input pixel values closest to the output pixel location to produce its value, and it's really easy to determine these 8. (Note: Neither with ImageMagick nor VIPS did I do careful import and export of the png. This is why there is a slight difference in colouring in some browsers.) P.S. Despite the reduced jaggies, I actually like EWA quadratic B-spline smoothing better than VSQBS. Last edited by NicolasRobidoux; 17th October 2012 at 16:28. |
17th October 2012, 16:34 | #14836 | Link | |||
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What I like about softer filters, is that they often blur out this offensive ringing/noise (note: I have no problem with film grain) while retaining most of the actual useful picture information. This is perhaps going too far in the opposite direction, but SoftCubic 80 compared with Jinc 3 anti-ring: Source Quote:
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17th October 2012, 17:09 | #14837 | Link |
Nicolas Robidoux
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Location: Montreal Canada
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On the Danny Glover shot, EWA quadratic B-spline smoothing has nothing over (tensor, I imagine) SoftCubic 80.
(Being sloppy, I can't quite align things using an ImageMagick command, so this is with the not-quite-aligned eyeball metric.) P.S. I managed to get alignment. They're so close one could almost say they're clones. EWA Quadratic is a minuscule amount sharper and jaggier. I think SoftCubic wins by a whisker. No "normal viewer" would see the difference, though. Even zooming in with a high quality image viewer (I use NIP2, of course: it's really fast, and I'm a dev). P.S.2 Scrutinizing some more, SoftCubic 80 wins: less jaggies, without significant additional blur, and with very little additional halo. P.S.3 But basically, you have to zoom in to break the tie. Last edited by NicolasRobidoux; 17th October 2012 at 21:11. |
17th October 2012, 18:25 | #14838 | Link | |
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While the TV does some smoothing but I don't think that's the culprit here. But.... It's probably the adaptive vsync option, it's enabled. I'll turn it off during playing a video and try if it happens again. |
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17th October 2012, 18:49 | #14839 | Link |
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I have an random issue with all the version of Madvr... I have an ATI 6850 with a X4 925, 8 GB Ram and W7 64. The problem is after a certain period the screen is divided in 2 with a lot of artifacts.
Do you have an idea of the reason and how to fix??? At the moment the only solution is to reboot the system (close the session is not enough and the image is still splited in 2) |
Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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