madVR - high quality video renderer (GPU assisted)

[golagoda]

Does the 'Use D3D11 for presentation' need a DirectX 11 card? I enabled it and assumed it wouldn't operate, but seems to play normally. :thanks:

Also, I think the 'overshoot max...' option has zeroed my presentation glitches. I thought I had it sorted before, but I noticed them cropping up again

My settings now would be:

5/8 for windowed and exclusive buffers with 'overshoot max frame latency' tweak

Pretty sure D3D stands for Direct3D

[Nicola]

I'm experiencing a strange thing, which I think may be a bug.
I installed madvr and try to use it with mpc-hc, xp sp3 here. My monitor is native 1920x1080.
now, what happens is a bit strange: if I play a 1920x1080 h264 encoded video, if I'm in fullscreen it's smooth, no tearing, best quality I ever seen, but if I play a smaller resolution, like 1280x720, it looks good only if I'm not in fullscreen; if I go fullscreen, every 3 seconds or so it stutters. Now, I noticed it stutters when I play a 1920x1080 video windowed, so I suppose it has to do with scaling the video up or down. I tried vith various options/combination of decoders, but I can't figure out what may cause it. Oh, my cpu doesn't go more than say 20% on FullHD from a BR, so it's not the reason... Can someone please help me getting around this issue?

[Hypernova]

I'm experiencing a strange thing, which I think may be a bug.
I installed madvr and try to use it with mpc-hc, xp sp3 here. My monitor is native 1920x1080.
now, what happens is a bit strange: if I play a 1920x1080 h264 encoded video, if I'm in fullscreen it's smooth, no tearing, best quality I ever seen, but if I play a smaller resolution, like 1280x720, it looks good only if I'm not in fullscreen; if I go fullscreen, every 3 seconds or so it stutters. Now, I noticed it stutters when I play a 1920x1080 video windowed, so I suppose it has to do with scaling the video up or down. I tried vith various options/combination of decoders, but I can't figure out what may cause it. Oh, my cpu doesn't go more than say 20% on FullHD from a BR, so it's not the reason... Can someone please help me getting around this issue?
Sounds like it's scaling, as you has guessed. madVR depends on GPU for scaling. If you want to verify it, use some kind of GPU monitor to see the GPU usage. Your only choice looks like it would be changing the scaling algorithm to something lighter.

[MokrySedeS]

What about the options in madVR settings --> rendering --> trade quality for performance ? He could try some of those.

[nlnl]

@ 6233638

Reference gamma is 2.40, period. If you want to see the content as it was created and intended to be viewed, that is what's required on your display.



So if my display (Pio plazma) is calibrated to 2.2 gamma, should I set madvr to "gamma processing on\ curve 2.4" for dark room viewing?

[Nicola]

I'll see about the gpu usage when scaling
Thanks for now.

[Nicola]

Indeed it was the gpu not having enough juice for the selected scaling.
I changed scaling algorithm for up/down scaling of luma only and now it's around 75%.
No stuttering. ;) Thanks a lot.

[THX-UltraII]

What I recommend doing is going into your madVR options, check “enable gamma processing”, select “pure power curve” and choose something like 2.4 or 2.5. You'll probably have to play with the value somewhat, but this should result in a more optimal result for playback in a very dark environment. I personally use 2.5 at night, 2.4 in the evening and 2.3 during the day.

Then, go to your calibration settings and choose “the display is already calibrated”, select “BT.709” for the primaries, “pure power curve” for the curve and 2.30 for the setting.

thxz for your reply.

Why not choose the option to disable calibration settings in madVR?

[nand chan]

thxz for your reply.

Why not choose the option to disable calibration settings in madVR?

Because then the gamma option doesn't do anything.

[THX-UltraII]

Because then the gamma option doesn't do anything.

but for who is the option to turn it off then?

[6233638]

@ 6233638


So if my display (Pio plazma) is calibrated to 2.2 gamma, should I set madvr to "gamma processing on\ curve 2.4" for dark room viewing?Yes, tell madVR that your display is calibrated to BT.709, pure power curve 2.20 in the calibration section and then set the target gamma as pure power curve 2.40 in the color & gamma section. You should notice a nice bump in image contrast and increased richness in colours.

In a perfect world this would be done at the display, but I don't believe Pioneer's controls offer enough flexibility to attain a flat 2.4 anyway—their displays seem built for 2.2.

This may actually be best for you, if you use the PC for other things such as games when connected to your TV. It would mean a 2.2 calibration for them—which is ideal—and 2.4 with film—also ideal.

[XRyche]

Yes, tell madVR that your display is calibrated to BT.709, pure power curve 2.20 in the calibration section and then set the target gamma as pure power curve 2.40 in the color & gamma section. You should notice a nice bump in image contrast and increased richness in colours.

In a perfect world this would be done at the display, but I don't believe Pioneer's controls offer enough flexibility to attain a flat 2.4 anyway—their displays seem built for 2.2.

This may actually be best for you, if you use the PC for other things such as games when connected to your TV. It would mean a 2.2 calibration for them—which is ideal—and 2.4 with film—also ideal.

Thank You very, very much. Even though this wasn't specifically for my benefit, it was a tremendous help to me. I'm a total novice as far as HTPC related problems go and this was a very simple and concise explanation. Now I can continue using madVR and LAV without the drop in colour quality because of madVR's lack of colour controls similiar to MPC-HC's EVR-CP and such renderers. madVR is so much better, I was starting to use MPC-HC tester builds for internal renderer fixes which is very good in it's own right (at least to a novice like me) but not quite up to par with madVR.

[THX-UltraII]

I m on 55% cpu usage with madVR and my system is

Core2Quad Q9550, 4GB DDR3, ATI5450
W7 X64, MPC-HC x86, LAV Video and Audio decoder.

Is this normal?

The reason I ask is because I want to do software Frame Interpolation with Avisynth but I don t have that much CPU left

[JarrettH]

Pretty sure D3D stands for Direct3D

So it's not hardware related? thanks :eek:

[ryrynz]

No that's not normal THX, surely there must be something else causing that high CPU usage. I have the same CPU and decoding H.264 720P material on MadVR uses some 7-15%

[Nicola]

I don't know if it's the right place, but I'd like to ask for advice anyway.
Considering I'm not a gamer, but I really want to use madvr with better resizing algorithms, I think it's time to go for something newer than my 8500GT.
So my choice is between the GT440 or 430 (which is cheaper and uses less energy).
Is this ok or those are too much/too low?

[THX-UltraII]

No that's not normal THX, surely there must be something else causing that high CPU usage. I have the same CPU and decoding H.264 720P material on MadVR uses some 7-15%

Remember that I run 1080p, this is a big difference from 720p I think. Also I m only running a ATI HD5450 AND I do software decoding, no hardware decoding.

Does GPU hardware decoding (a NVIDIA card) better (higher PQ?) to use with madVR btw?

[nand chan]

I m on 55% cpu usage with madVR and my system is

Core2Quad Q9550, 4GB DDR3, ATI5450
W7 X64, MPC-HC x86, LAV Video and Audio decoder.

Is this normal?

The reason I ask is because I want to do software Frame Interpolation with Avisynth but I don t have that much CPU left

I have the same CPU - when playing the Toru no Uta long version, I get about 20% CPU usage without subtitles and 50% CPU usage with subtitles (because of the crazy animated softsubs).

Which test file are you using?

The highschool of the dead Hi10P test clip gives me about 20%-30%. When using EVR-CP instead of madVR, I get around 10%-20%.

[THX-UltraII]

I have the same CPU - when playing the Toru no Uta long version, I get about 20% CPU usage without subtitles and 50% CPU usage with subtitles (because of the crazy animated softsubs).

Which test file are you using?

The highschool of the dead Hi10P test clip gives me about 20%-30%. When using EVR-CP instead of madVR, I get around 10%-20%.

I m using regular full BR +-30-50gb rips (.m2ts) @1080p23,976

Did some good testing again and I m @45-50 cpu usage, with or without my dutch .srt subtitles enable (this does not make any difference).

Is there a way to see my CPU usage in Exclusive Mode? Because I check my CPU usage by CTRL+ALT+DEL, Taksmanager, Performance and this way madVR autoswitches to Windowed Mode.

[golagoda]

I don't know if it's the right place, but I'd like to ask for advice anyway.
Considering I'm not a gamer, but I really want to use madvr with better resizing algorithms, I think it's time to go for something newer than my 8500GT.
So my choice is between the GT440 or 430 (which is cheaper and uses less energy).
Is this ok or those are too much/too low?
I'd personally go with the GT430, it has OpenGL 4.1, whereas the GT440 has OpenGL4.0, and the default clock speeds/memory of the cards are relatively the same, not to mention it's the cheaper one.

You can always overclock it a bit as well, they're not like GTX590's where your house will literally burn down at the default speeds.

[Qaq]

Is there a way to see my CPU usage in Exclusive Mode?
Start Task manager and open Perfomance window
make it wider
start a movie and watch for few minutes
close the player
see Task manager

[nevcairiel]

I'd personally go with the GT430, it has OpenGL 4.1, whereas the GT440 has OpenGL4.0, and the default clock speeds/memory of the cards are relatively the same, not to mention it's the cheaper one.

Thats not true, all 400 series support up to OpenGL 4.2.
The real difference is in memory bandwidth, a GT440 with GDDR5 will have a drastically higher memory bandwidth then a GT430 with DDR3, which can make quite a big difference in some cases.

[mandarinka]

Actually, is the memory bandwidth of the gpu as important for madvr as it is for gaming?

Since we are talking about HTPC-use, the power draw/dissipation is also important, and in some reviews of the 6400-6500 Radeons I noticed that gddr5 ram added about 10W to the overall power usage of the card (compared to gddr3 model)... For that reason, it could be a good idea to go for ddr3 to get a cooler card (provided it won't cripple madvr too much).

[Thunderbolt8]

from what Ive heard, its the most important performance factor for madvr

[CountryBumkin]

Lately, I am having problems running MadVR (with Lav CUVID) in JRiver MC16. I have big time hestitation and freezing playing back BD material. My system is a ASRock H67, i3-2100, nvidia GTS450, Win7 32bit. Everything used to work fine - I don't know what changed to cause this problem.

When the hesitation/stuttering starts;
MadVR status screen shows:
decoder queue is 1-/1/8 (I have even seen these numbers lower)
upload queue is 1-1/8
renderer queue is 1-1/8
present queue is 0-0/4

if I pause movie the queue starts to increase, movie plays okay then queue numbers drop and movie hesitates/freezes. Sometimes the (BD) movies start and run fine, sometimes I ge this problem right after starting Playback, and somtimes it plays a little then the hesitation/stuttering starts. Seems like first queue to drop is the Decoder queue with the other queues dropping immediately thereafter.

My other HTPC is running JRiver too with same JRiver settings and MadVR is great so I don't think this is related to MC16 settings. On this HTPC the queue numbers are always 7-8/8 for first three and 3-4/4 for last one. All the movies play/stream from same local Server (hardwired network) so I know the movie rips are not the problem as they play fine on the other system.

I swapped video cards this weekend (GT440 to GTS450) but the problem stays with the computer (not with the card).

My Network ulitization is 1%, CPU around 5%, GPU-Z shows around 1% load. I ran Windows Performance test and nothing is comong up wrong.

What do I need to check/do to figure out the problem?

[noee]

Try software decoding to isolate LAVCUVID.

[dansrfe]

from what Ive heard, its the most important performance factor for madvr

I have the same graphics card that you have. madVR works well for me.

[THX-UltraII]

here s a graph of my CPU usage with madVR latest version, LAV Video Decoder, W7 x64, MPC-HC x86, ATI HD5450 with latest cat., Core2Quad Q9550 running @stock, 4GB DDR3. Looks a little bit high?
Running a 1080p23,976 HD .m2ts BR rip on a 1080p projector.

http://img856.imageshack.us/img856/2844/unledttu.th.jpg (http://imageshack.us/photo/my-images/856/unledttu.jpg/)

What is the best recommendation for best PQ?

1. ATI HD5xxx/6xxx series with LAV video software decoding
2. NVIDIA ? with LAV video software decoding or
3. NVIDIA ? with LAV CUVID

[Andy o]

What blu-ray is this? What I can tell you though is that with madVR you won't be able to do frame interpolation smoothly. I kinda had it working with lower settings and I think EVR-CP on Win 7-64 and a q9450 and 5770.

[Nicola]

I have the same graphics card that you have. madVR works well for me.

You mean the 8500gt? which algorithm are you using for resize? the default maxes out gpu usage here.

[Hypernova]

here s a graph of my CPU usage with madVR latest version, LAV Video Decoder, W7 x64, MPC-HC x86, ATI HD5450 with latest cat., Core2Quad Q9550 running @stock, 4GB DDR3. Looks a little bit high?
Running a 1080p23,976 HD .m2ts BR rip on a 1080p projector.

http://img856.imageshack.us/img856/2844/unledttu.th.jpg (http://imageshack.us/photo/my-images/856/unledttu.jpg/)

What is the best recommendation for best PQ?

1. ATI HD5xxx/6xxx series with LAV video software decoding
2. NVIDIA ? with LAV video software decoding or
3. NVIDIA ? with LAV CUVID

My understanding is that, for decoder it's more black and white. Every encoder should give the same result. If it failed, it wouldn't be just a worse PQ, but totally wrong picture (blocks, bands, etc.). So you can choose the decoder that you like the most (free, use CPU/GPU, good performance, etc.). However, I would say that, for the least chance of something messed up, madVR+its own internal decoder would be best, just because madshi have a total control on both. Now, he do committed to make madVR works just as well for external decoder, so I wouldn't too worry about that either.

[golagoda]

Thats not true, all 400 series support up to OpenGL 4.2.
The real difference is in memory bandwidth, a GT440 with GDDR5 will have a drastically higher memory bandwidth then a GT430 with DDR3, which can make quite a big difference in some cases.

I was going by what was said on the nvidia site, I'm pretty sure nvidia knows what they're talking about when talking about the cards they make themselves :p

[QBhd]

Is there a way to see my CPU usage in Exclusive Mode? Because I check my CPU usage by CTRL+ALT+DEL, Taksmanager, Performance and this way madVR autoswitches to Windowed Mode.

If you use PotPlayer, hit the <TAB> key and the CPU usage will be displayed.

QB

[THX-UltraII]

My understanding is that, for decoder it's more black and white. Every encoder should give the same result. If it failed, it wouldn't be just a worse PQ, but totally wrong picture (blocks, bands, etc.). So you can choose the decoder that you like the most (free, use CPU/GPU, good performance, etc.). However, I would say that, for the least chance of something messed up, madVR+its own internal decoder would be best, just because madshi have a total control on both. Now, he do committed to make madVR works just as well for external decoder, so I wouldn't too worry about that either.I thought
That LAV is the best decoder out there atm

[Hypernova]

I thought
That LAV is the best decoder out there atm

I think that's the case, performance wise. However, it make no different on PQ.

[THX-UltraII]

I think that's the case, performance wise. However, it make no different on PQ. then I ll make the swith to madVR video decoding because this 'fits' best with madVR I guess.

[irishrobbie]

I thought
That LAV is the best decoder out there atm

i can tell ya that madvr with lav decoder is deffo a good combination and im using an ati 5670 graphics card, very smooth indeed no frames been dropped

[THX-UltraII]

i can tell ya that madvr with lav decoder is deffo a good combination and im using an ati 5670 graphics card, very smooth indeed no frames been dropped

just did some testing with madVR as decoder. 10% higher CPU usage so I ll stick with LAV video decoder for now.

Is there a way to let MPC-HC/madVR start with a few seconds delay when choosing a file? I ask this because I use XBMC; when running XBMC my output of my video card runs at 1080p60 because XBMC is far more smoother with this. But when I m going to play content from within XBMC (I use MPC-HC as external player) my projector has to switch from 60 to 24 and this takes a few seconds. So I can already hear my movie playing while the projector is still busy with making the freq. switch.

[XRyche]

Is there a way to let MPC-HC/madVR start with a few seconds delay when choosing a file?

Have you tried "delay playback start until renderer queue is full" under rederering/general settings? It's probably only a 1 or 2 sec (depending on how big your buffer is) delay max but it might work for you.

[robpdotcom]

Have you tried "delay playback start until renderer queue is full" under rederering/general settings? It's probably only a 1 or 2 sec (depending on how big your buffer is) delay max but it might work for you.

It takes a few seconds for my projector to switch, and that option causes playback to start paused - which is better than starting before it switches imo.

[robpdotcom]

I have a couple of slightly off-topic questions:

I recently switched from an AMD to an NVIDIA card. With the AMD card, my projector's "Info" screen displayed "Deep Color 10bit", but with the NVIDIA card it displays "Deep Color ---bit".

My AVR says 8bit RGB with the NVIDIA card, and I believe it reported 10bit RGB with the AMD (I'd have to reinstall the AMD card to be sure).

So, my questions are: Am I losing anything, or have something set up wrong? Or, does madvr output 8bit anyway, and the AMD was padding it 10bit?

Also, with the AMD card, it was easy to know that it was outputting full RGB. With NVIDIA, I have no idea if it's full or limited. Is there any way to check this?

[nevcairiel]

So, my questions are: Am I losing anything, or have something set up wrong? Or, does madvr output 8bit anyway, and the AMD was padding it 10bit?

You're not losing anything. For one, madVR is limited to 8-bit, and secondly, the consumer cards limit all input to 8-bit as well - what they do with the output is another matter.


Also, with the AMD card, it was easy to know that it was outputting full RGB. With NVIDIA, I have no idea if it's full or limited. Is there any way to check this?

Its sadly not really trivial like this. The easiest way would be to just get a test pattern and play that.

If you're using HDMI there is this general rule of thumb:
If you created a custom resolution, its Full-Range RGB, if you're using one of the built-in resolutions, its probably limited range.

[6233638]

If you're using HDMI there is this general rule of thumb:
If you created a custom resolution, its Full-Range RGB, if you're using one of the built-in resolutions, its probably limited range.This doesn't seem to be the case any more with newer displays. Both Sony LCDs here (2010 models) get 0–255 with the built-in resolutions and no modification.

Definitely something you should check though, and either perform the .inf modification (http://forum.doom9.org/showpost.php?p=1528483&postcount=9862) (requires you to extract the installer with an unarchiving application such as 7-Zip (http://7-zip.org/) first) or create a custom resolution which should force PC levels, but doesn't seem to guarantee it.

[robpdotcom]

If you created a custom resolution, its Full-Range RGB, if you're using one of the built-in resolutions, its probably limited range.

Thanks for the answer.

I'm actually having problems creating a custom resolution - every time I try, it says that the resolution already exists.... but all I want is a standard resolution, with full RGB, so I don't know how to create one that doesn't exist.....:confused:

=perform the .inf modification (http://forum.doom9.org/showpost.php?p=1528483&postcount=9862) (requires you to extract the installer with an unarchiving application such as 7-Zip (http://7-zip.org/) first)

Big thanks for that. I had read about the inf modification, but I didn't know how to do it. It was much easier than I imagined - especially with the tip about using 7zip to extract the installer.

[nevcairiel]

I'm actually having problems creating a custom resolution - every time I try, it says that the resolution already exists.... but all I want is a standard resolution, with full RGB, so I don't know how to create one that doesn't exist.....:confused:

You need to change the timing slightly - adjust it from for example 50.000 to 50.001, it wont make a difference on the actual timing, but it will allow you to create the resolution.

[Andy o]

I've had no problem with the output selector set to 0-255 in the NV control panel (or ATI for that matter). My display can be set manually to 0-255 or 16-235 input, so you know what's being output by the card.

[nevcairiel]

The Output range in the NV panel only influences EVR, it does not relate to the Desktop itself.

[Andy o]

Sorry I got confused with the way AMD does things. I am getting 0-255 though with stock resolutions, as evidenced by manual 0-255 and 16-235 input tests on my display, and the AVCHD disk patterns.

[pacemaker1000]

hi guys
i have to change my ati 4650 card to get hd audio so am looking for advice on the best compatability with MadVR
i am looking at either another ati 6xxx or an nvidia gt 430
i do get 23.977 at the moment with the ati but have been told the nvidia with cuda is better

advice appreciated before i pull the trigger

thanks

[madshi]

I've just tested a few things after resetting madVR settings to the defaults.

"limit rendering times to avoid glitches" on its own does not fix things.
"use D3D11 for presentation" on its own significantly reduces presentation glitches.

Combining the two eliminates them. Nothing else needs changed from the defaults.
Yeah, these two options is what I've ended up on my NVidia 9400 HTPC, too, for 25fps @ 50Hz playback.

When I try to upscale 720p60 to 1080p60, I get a ton of dropped frames unless I use exclusive mode. No big deal, since I use exclusive mode anyway, but recently I tried to play a similar video with subtitles, and it was un-watchable - even in exclusive mode. I tried setting all of the "trade quality for performance" to lowest quality, and tried different algorithms, but no help. I'm assuming that my GPU just isn't up to the task, so I'm wondering: How I can tell? Are there certain queues (renderer, present, etc) that would give hints? Would a log shed any light on it?
Subtitles shouldn't put much of a burden on the GPU. The higher burden should be on the CPU. Check which queues are empty. If the decoder queue is not full, your CPU is too slow.

The only advantage DScaler has is for telecined DVDs. The only reason to use it would be for NTSC DVDs that need 29.97 -> 24p conversion. If you never watch that kind of content, could as well use a faster and more up-to-date decoder.
It's working just as well for IVTCing 1080i60 MPEG2 movies, which is the format almost all HD content (broadcasts and D-Theater) was encoded in before HD DVD and Blu-Ray were released.

If I set my pc up to switch to 24hz when I open a file there is no image, only sound. If I pause/play I get the image. Or if I minimize/maximize. This seems to be regardless if I use madvr’s autofrequency or mpc-hc’s or the program called Autofrequency. Is this a bug in madvr or am I doing something wrong?
Could have to do with the "rendering -> general settings -> delay playback start until render queue is full" option. Try disabling that option.

Problem is, I think that my video card is just too weak: on a 720p video I got only up to around 20-24fps. For example, when playing a 60fps video, it dropped 2/3rds of the frames. Am I right, or did I mess up something?
Try using less demanding scaling algorithms. In the worst case try Bilinear, but that'd be kinda sad.

Im having an issue thats killing me, I just switched to the hdmi out on my 6850 and Im having stuttering issues with 1080p content. It only happens when it switches to exclusive mode its fine when i rightclick it to show the menu but as soon as it goes back to exclusive it stutters again. Its a very slight stuttering thats driving me nuts, drivers have been the same for a few weeks. My other specs are i52500k and 4 gigs of ram..so I doubt its my system any ideas 720p runs fine. The vids run fine on evr but not madvr if that helps.
Do you need exclusive mode? If windowed mode works fine for you, you could simply disable the exclusive mode. It's weird that exclusive mode stutters for you, though. Have you modifed the options a lot? You could try resetting to the default settings.

but again, i wonder, beacuse by default luma upscaling is set to Lanczos which has high red bars???

how come this is default when it has red bars on aliasing and ringing:script:?
Because Lanczos is also the sharpest resampler, and many people value sharpness so high that they don't care much about ringing. In the end it's all a matter of taste.

Would it be possible to use /multiple/ .3dluts, say, 3x2 that are sampled at different points on the screen, and interpolated in realtime, to account for panel uniformity issues?
Uniformity issues are usually per panel (red, green, blue) and totally separate from the other panels. So using three 1dluts would be a much more efficient way for such a feature. That is, if I understand correctly what you're talking about. You do mean brightness variations of a panel, right?

DScaler IVTC mod works sometimes on 1080i files and sometimes there is a lot of weaving (tested on reference blu-ray material).
Do you have a sample which shows these weaving problems with the DScaler IVTC mod?

I seem to have a bit of lag and audio/video sync issues when i set my samsung ue40d6505 tv at 24z. ether with madvr or a blurayplayer. can any1 explain this? it dosnt do it in 60hz mode. this is regardles of content framerate.
This is probably a problem of your TV.

Also motion interpolation dosnt work on the pc. It does with bluray and tv. The signal must be different somehow from that of the bluray player yes? I like to turn it up just at 1 setting out of 10 wich makes quete a difference yet keeping af film-feel. Is there a way to do adjustable motion interpoltion with mpc-hc madvr ect. and how does this work? I know i can set the tv to pc mode but its crap and unsuitable for watching movies from a pc.
My best guess is that motion interpolation only works with 8bit sources, and probably your GPU somehow insists of outputting DeepColor. That's just a guess, though.

I set Black level to high on my LG(0-255).
But if I tell madVR that my display expects 0-255, i only see bars 18-25 flashing.
If I set to 16-235 then I see bars 2-25 flashing.
Should that be other way around?
No. BTB and WTW are not supposed to be visible on a properly calibrated display. So you not seeing 1-15 flashing is just fine. However, ideally you should see 16-25 flashing. You could play with the brightness and contrast controls of your TV to make 16-17 visible.

Hi. I have a problem.
When I enable full screen and then minimize my player (potplayer), i get an error (resetting Direct3D device failed (88760868) and the player crashes.
That is probably in XP? It might be a madVR or a PotPlayer bug, not sure. I'd suggest updating to the latest PotPlayer version, just to be safe.

I'm running a Dell Latitude d620 with an Intel 945gm Mobile Chipset. It has 224.0 MB of memory, and supports Dx9 Direct3D. I'm running windows XP. As far as I know, I meet the minimum hardware requirements.
According to wikipedia your GPU only supports PixelShader 2.0 in hardware. It does seem to support PixelShader 3.0 is software, but it seems that's not good enough. madVR requires 3.0 PixelShaders, unfortunately.

Hmm... Thanks for the info, it sounds completely different than what madshi and yesgrey told me, but is probably correct. I always had the feeling that yesgrey must have coded all the new 3dlut related stuff in 0.62 by the way madshi explained things.

madshi, when you come back around, can you clarify the above for me? Once again, how does madVR interact with the 3DLUT during steps (6) through (9) in >=0.62 compared to <=0.61? What does the 64bit refer to in the steps you listed?
Well, if you look at the step list again, it has 3 sections: "madVR:", "3dlut:" and "madVR:". The steps (6) through (9) are performed by the 3dlut and not by madVR, obviously. The steps (6) through (9) try to explain what yCMS does when creating the 3dlut file. yCMS internally converts everything to linear light 64bit floating point before doing any other processing.

It would be interesting to know if the "limit rendering times to avoid glitches" option causes problems for anyone, regardless of whether or not they are experiencing this issue. It seems like it could maybe be enabled by default.
It does limit the rendering times, meaning that it does reduce rendering performance, which can be a problem for slower GPUs.

madVR is the best thing. Sorry if that doesn't add much to the conversation.
It may not add much to the conversation, but I still like to read it.

lots of glitches on MadVR, even if the queues stay all full. The display used is a projector going at 60Hz.

If in window mode I get lots of skipped and delayed frames. If in exclusive mode I get zero missed or delayed, but plenty of presentation glitches.
You're probably using an NVidia card? Try activating the option "limit rendering times to avoid glitches". If that doesn't help, try also activating the DX11 presentation mode. The presentation glitches are a known problem with the newer NVidia drivers. I'm pretty sure it's a driver bug.

I have a suggestion that I think would be very useful.

Make an option in the configuration to either:

1: Display the info (CTRL-J) for 10 seconds after opening a video file.
2: Simply only show the display refresh rate for about 10 seconds.
Things like that are planned for a future version. Not too soon, though.