madVR - high quality video renderer (GPU assisted)

[CruNcher]

Pagefile writes most probably, though saying that MadVR causes them is a little to fast without analyzing in depth whats going on, you should look where exactly what writes to and then analyze why :)

[Andy o]

The Windows Visa/7 audio engine does not introduce distortion. In fact it should be bit-exact if the input sample rate matches the configured sample rate.

I think this is true of XP. The audio engine in Vista/7 processes all audio in 32 float, doesn't it? A long time ago I remember I tested this with DTS-WAV, but couldn't do it bit-perfectly through the Vista/7 mixer (don't remember which was but should be the same). In any case, WASAPI exclusive is easier and more practical.

[e-t172]

The audio engine in Vista/7 processes all audio in 32 float, doesn't it? A long time ago I remember I tested this with DTS-WAV, but couldn't do it bit-perfectly through the Vista/7 mixer (don't remember which was but should be the same).

Well, yeah. The Vista/7 mixer indeed processes audio in 32-bit float, what makes it not bit-perfect is that it dithers before converting back to integer (as it should). I stand corrected. This will corrupt DTS-WAV bitstreams (which are not supposed to use PCM audio APIs, by the way) but for normal audio waveforms, its effect is negligible (+3dB of noise floor).

[Mangix]

using WASAPI exclusive mode does NOT upsample everything and then dither it down. one solution for people with complaints about the vista/7 audio mixer. better audio with that than you'll ever get with xp.

[e-t172]

using WASAPI exclusive mode does NOT upsample everything and then dither it down. one solution for people with complaints about the vista/7 audio mixer. better audio with that than you'll ever get with xp.

That's why I output 32-bit float from the audio decoder and renderer. This way I'm just moving the dithering operation from the decoder/renderer to the Windows audio engine, without any loss in quality.

[G_M_C]

Could we please move the audio-discussion auto of the madVR section ? madVR is a video renderer after all, so this isn't the right place for a audio discussion.

[leeperry]

Why not Use WASAPI Exclusive? (you can set that up in Reclock)
Why not discussing audio matters elsewhere? It's the mVR thread, thank you.

[kalston]

using WASAPI exclusive mode does NOT upsample everything and then dither it down. one solution for people with complaints about the vista/7 audio mixer. better audio with that than you'll ever get with xp.

You forgot that XP has Kernel Streaming and ASIO :) (although Reclock doesn't support the latter) and even Directsound can easily be bitperfect in XP.

[Mangix]

i agree with leeperry so this is my last post on this:

directsound's kmixer has been known to cause issues when mixing audio streams with differing sample rates(hence why kernel streaming was invented, although i will say bitperfect playback with kernel streaming is quite dependent on proper drivers. i've seen realtek audio drivers mangle the audio and some drivers(Aureal and Realtek) still do mixing with kernel streaming). asio is the gold standard(low latency and bitperfect) but hardly supported(asio4all doesn't count). that's why i say WASAPI exclusive is the best solution for most people who want to get bitperfect playback.

[bjd]

Had to roll back my WDM Realtek HD driver to 2.56 becuase of crackling on newer drivers.

Best advice when kernel streaming with Realtek drivers in XP is to mute all the mixer inputs including line and ensure the DSP effects are switched off too. That way it should bitstream DTS wav files - it did for me.

[adam777]

Hi all,
Due to a very unfortunate series of events (only some of which my fault... :p), I had to reinstall my Windows 7 machine.
I got everything installed and configured only to realize madVR works much worse than before.

The symptoms (all under both Zoom Player and MPC-HC):
- Initial playback takes long to begin, resulting in a massive (200+) amount of dropped frames.
- Opening context menu while in fullscreen exclusive mode (i.e. switching to fullscreen windowed mode) takes long as well (a few seconds), again resulting in massive amount of dropped frames.
- Going out of fullscreen while in FSE (going to windowed mode) demonstrates same behavior.
- Exiting the player takes long as well.
- As far as I can tell, once playback gets going, all is well (haven't tested it thoroughly, though).

I tried madVR with both default settings and my minor modifications (default scaling algorithms, some options changed here and there).
Although madVR 0.80 worked perfectly prior to the unfortunate reinstallation, I did try some older versions (0.79-0.76) to no avail.
I can think of nothing major that changed in my setup, same filters are in use (LAV Splitter->LAV Video->madVR on the video side of things) and I suppose same general setup as well (Windows 7 x64 SO1, fully patched, latest directx etc.).
Also worth noting, I'm doing all testing on a file I know worked well before (Windows 7 sample video - "wildlife").

I realize this maybe a bit general, but If someone can offer an insight on specific things I should look at, it'll be a great help.

Thanks, Adam.

* EDIT *
A-Ha!
I just realized that while busy downloading the latest versions of my software I actually installed a newer Catalyst version (12.1, just released).
I removed it, rebooted and all is smooth again :)
I'm not convinced I used the previous version (12.11), so I'll try to pinpoint the exact problematic version.

[Qaq]

Adam, I guess you need to increase the merits for LAV. Here on d9 forum should be a tool for that. Check forums carefully.

[adam777]

OK, conclusions.
I removed installed Catalyst (express uninstall which should remove everything), rebooted and installed 11.10 - Everything seems to be OK.
Removed 11.10, rebooted and installed 11.11 - still OK.
Removed 11.11, rebooted and installed 11.12 - OK, yet again.
At this point I was sure 12.1 was the problem, as it seems there are some differences with this release comparing to previous ones:
- Mobility installer offers more stuff (for example, HDMI audio driver. In previous versions, I had to run the desktop version to be offered the driver).
- Much larger package size (~150MB vs. ~100MB).
- Different unpacking location (though it is irrelevant of course).
- Some changes to the CCC.
Overall, it just seems a bit different.

So, installed 12.1 again, and what do you know - now it works...
I believe that at some point during last night's reinstallation marathon I installed 11.12, and then installed 12.1 (which was just released at the time, I probably download it within minutes of release) without uninstalling 11.12, which could be the reason for the weird behavior.

Bottom line, everything seems to be in order.
Thanks for listening :D

[FreeFall]

madshi,

I have a strange problem with madVR in Zoom Player when using xy-vsfilter. If a video uses pgs subtitles after playback is started it then stops, video plays fine after starting playback a second time. I don't have the problem with playback when using the EVR renderer.

Win7 64 bit, Zoom Player 8.1, madVR 0.80, xy-vsfilter 3.0.0.1, LAV Filters 0.44, tested with a Blu-ray disc and an Mkv encode with pgs subtitles.


FreeFall.

[cyberbeing]

Does the problem go away if you disable the 'Delay playback until render queue is full' option in madVR?

[golagoda]

madshi,

I have a strange problem with madVR in Zoom Player when using xy-vsfilter. If a video uses pgs subtitles after playback is started it then stops, video plays fine after starting playback a second time. I don't have the problem with playback when using the EVR renderer.

Win7 64 bit, Zoom Player 8.1, madVR 0.80, xy-vsfilter 3.0.0.1, LAV Filters 0.44, tested with a Blu-ray disc and an Mkv encode with pgs subtitles.


FreeFall.
It may or may not help at all, but in the ffmpeg 0.10 release (released today) one of the main changes was "Improved PGS subtitle decoder".

When ffmpeg is updated in whatever you're using behavior might improve.

[nevcairiel]

xy-vsfilter does not use ffmpeg for subtitle decoding.

[golagoda]

xy-vsfilter does not use ffmpeg for subtitle decoding.
I've never even heard of xy-vsfilter so I have no idea really, was just putting that out there in-case it helped

[FreeFall]

cyberbeing,

Thanks, turning off "delay playback start until render queue is full" fixed the problem, I use the option to reduce presentation glitches.

golagoda,

Thanks, xy-vsfilter uses the same pgs sub renderer that mpc-hc does with the same bugs (has timing problems, some subs show up later then they are supposed to or disappear to early). Maybe one day we will see a ffmpeg based dshow subtitle renderer or another alternative.

[woody777]

When I try to play MKVs (standard definition dvds) in MPC-HC using Madvr, I get the message "Madvr Reports: deinterlacing failed" when I press control J.

The error just repeats over and over in red text and there is no other information on the screen.

The MKV plays, but I want to know how to correct the error.

Anybody?

[FreeFall]

woody777,

Can you upload a sample file?

[woody777]

woody777,

Can you upload a sample file?

Like the MKV file?

I uninstalled mpc-hc, updated Directx, reinstalled mpc-hc and all seems well again. However, it was working fine on my first install - at least for a little bit.

[Mangix]

rant:

i like how madVR performs faster than vmr9 and evr on this pos machine running xp with a p4 2.6ghz and an hd2400 pro. even with stock settings. really pathetic. or awesome. not sure.

[FreeFall]

woody777,

Yeah I meant a sample of the Mkv to test, looks like you managed to sort out the problem on your end.

[dansrfe]

madshi,

Can you please explain to us how to read the log files so that we can attempt to figure out why a certain problem is happening? Thanks.

[wanezhiling]

"madVR 0.80 + CoreAVC 3.0.1(Hardware)", there's no image output when playing 1080i??

[phoenixxl]

Hello,

When using mpc-hc in fullscreen mode , then , whilst playing one presses the right mouse button , mpc-hc reverts to desktop frequency before displaying the context menu. The first time clicking , the menu doesn't even appear.

I have no idea if this is a madvr issue or something in mpc-hc , I just know this only happens when using madvr output. Right clicking 24 fps media while playing in EVR , haali , vmr , overlay output in fullscreen , the frequency doesn't change.

I know a lot of changes have been made in mpc-hc where fullscreen custom frequency playback is concerned so i'm not sure where to post about this tbh.

In the end , for me , the fact it takes 3-4 seconds to switch screen mode then 3-4 again to switch back every time the right mouse button is pressed sometimes crashes my player , sometimes de-syncs my audio and has changed the right click from handy to dangerous.

It would be great if you could look into this .

Thank you in advance.
Phoenixxl.


--

PS:

I am using mpc-hc 1.5.3.4006.
My fullscreen config looks like this:
http://i.imgur.com/Urvi7.png

To avoid all confusion about what I mean , here's a video:
http://www.youtube.com/watch?v=yXWdnBq5PMc&hd=1

At 0:20 I press the right mouse button once , freq goes from 24 to 60 back to 24. The context menu doesn't even appear. This always happens the first time.

At 0:33 I press again , freq goes to 60 , menu appears , I press info , then press cancel , player goes back to 24

[golagoda]

Hello,

When using mpc-hc in fullscreen mode , then , whilst playing one presses the right mouse button , mpc-hc reverts to desktop frequency before displaying the context menu. The first time clicking , the menu doesn't even appear.

I have no idea if this is a madvr issue or something in mpc-hc , I just know this only happens when using madvr output. Right clicking 24 fps media while playing in EVR , haali , vmr , overlay output in fullscreen , the frequency doesn't change.

I know a lot of changes have been made in mpc-hc where fullscreen custom frequency playback is concerned so i'm not sure where to post about this tbh.

In the end , for me , the fact it takes 3-4 seconds to switch screen mode then 3-4 again to switch back every time the right mouse button is pressed sometimes crashes my player , sometimes de-syncs my audio and has changed the right click from handy to dangerous.

It would be great if you could look into this .

Thank you in advance.
Phoenixxl.


--

PS:

I am using mpc-hc 1.5.3.4006.
My fullscreen config looks like this:
http://i.imgur.com/Urvi7.png

To avoid all confusion about what I mean , here's a video:
http://www.youtube.com/watch?v=yXWdnBq5PMc&hd=1

At 0:20 I press the right mouse button once , freq goes from 24 to 60 back to 24. The context menu doesn't even appear. This always happens the first time.

At 0:33 I press again , freq goes to 60 , menu appears , I press info , then press cancel , player goes back to 24
That's a madVR issue.

You can speed it up by disabling the setting that's called something like 'wait 3 seconds before switching to exclusive mode' that's on by default in the madVR settings.

[phoenixxl]

That's a madVR issue.

You can speed it up by disabling the setting that's called something like 'wait 3 seconds before switching to exclusive mode' that's on by default in the madVR settings.

The time it takes to change from 1920x1080/60 to 1920x1080/24 doesn't change by modifying this option.. It just goes to exclusive a bit faster at the very end.

This isn't a windowed vs exclusive mode thing... when disabling exclusive mode in madvr , the fullscreen windowed mode is still at the expected 24 hz. (you can test this by disabling this option http://i.imgur.com/dWcNh.png , madvr will open a "fullscreen windowed" at the asked frequency with a working right mouse button context menu)

It's just that when madvr plays in exclusive mode , somehow when temporarily going back to "fullscreen windowed mode" it opens a screen at desktop frequency (idk , reading what the desktop is at /shrug) , instead of keeping the information what the initial frequency mpc-hc opened the screen at was in some set of variables , and opening the temporary "fullscreen windowed mode" one in that.

[golagoda]

The time it takes to change from 1920x1080/60 to 1920x1080/24 doesn't change by modifying this option.. It just goes to exclusive a bit faster at the very end.

This isn't a windowed vs exclusive mode thing... when disabling exclusive mode in madvr , the fullscreen windowed mode is still at the expected 24 hz. (you can test this by disabling this option http://i.imgur.com/dWcNh.png , madvr will open a "fullscreen windowed" at the asked frequency with a working right mouse button context menu)

It's just that when madvr plays in exclusive mode , somehow when temporarily going back to "fullscreen windowed mode" it opens a screen at desktop frequency (idk , reading what the desktop is at /shrug) , instead of keeping the information what the initial frequency mpc-hc opened the screen at was in some set of variables , and opening the temporary "fullscreen windowed mode" one in that.
Does disabling the setting under disable desktop composition that makes it only apply when in fullscreen mode make a difference at all? Maybe try disabling the main 'disable desktop composition' setting itself afterwards too, that setting can be problematic both on and off at least when I've personally used it.

[Owyn]

Bug: minimizing video to 0x0 size in KMPlayer via tilda ` button crashes the player if madVR is used (works fine with all others)

[bozokaydin]

I used CoreAvc+Lav Filters+Madvr.

Is it better to use Madvr scaling (Chroma upcaling Softcubic 100, Luma up-down spline 4 taps) with 720p or scale with Avisynth and use Avisynth LSFMod for better quality as described in http://www.homecinema-hd.com/avisynth-lsfmod_news-315_en.html

I have 1080p 60 hertz fixed LG plasma and nvidia gtx 590. I am searching maximum quality for 720p Tv show playback.

[secvensor]

And why it is impossible to give the chance switchings between WASAPI and ASIO in madVR?

[shimaflarex]

And why it is impossible to give the chance switchings between WASAPI and ASIO in madVR?
Video renderer.

[phoenixxl]

Does disabling the setting under disable desktop composition that makes it only apply when in fullscreen mode make a difference at all? Maybe try disabling the main 'disable desktop composition' setting itself afterwards too, that setting can be problematic both on and off at least when I've personally used it.

Sadly enabling or disabling it changes nothing.

[THX-UltraII]

Any NVIDIA users that have lip sync problems since 0.80? I m having lip sync issues sometimes. To fix it I need the press pauze and play again (sometimes more then one time) untill it s in sync again. Don t had these problems with 0.79. Did not change any other software (W7 x64, MPC-HC and LAV filters 0.44)

[phoenixxl]

Any NVIDIA users that have lip sync problems since 0.80? I m having lip sync issues sometimes. To fix it I need the press pauze and play again (sometimes more then one time) untill it s in sync again. Don t had these problems with 0.79. Did not change any other software (W7 x64, MPC-HC and LAV filters 0.44)

Yes .. it's less since I installed mpc-hc 4006 . : http://tinyurl.com/latest-mpc

The sync is "still there" internally .. (idk how to explain this any better) .. What you have to do to make it play in sync again is just press space a few times and it will sync up again from then on. Problems start when you pause , go windowed then fullscreen again , basically anything that's not instantaneous .

Also tbh , I was convinced my issues were related to using passthrough spdif audio though...

[Owyn]

Bug №2: when a video with madVR is open ctrl+R hotkey in browsers (google chrome) doesn't work.

[6233638]

Bug №2: when a video with madVR is open ctrl+R hotkey in browsers (google chrome) doesn't work.So that's what has been causing it. I've been noticing that recently, and restarting the browser fixed things, so I didn't realise madVR was the cause.

I've also had applications going under the taskbar when you maximise them every so often. This seems to be linked to running madVR in DX11 mode (required for the smoothest playback I can get with 290.53) and toggling fullscreen/exclusive mode a few times.

I have the taskbar at the top of my screen rather than the bottom, which may or may not be related. (might not happen with it at the bottom of the screen?)

[LordX2]

I just reformatted my HTPC so I decided to finally upgrade MadVR as well.

I have been running 0.34 since it came out - with NO issues (many people didn't like .34 - but it has worked great for me).

So I got the basics: FFDSHOW latest/MPC-HC latest - and madvr .80.

Not only did I experience the 'lipsync' issue I saw others discussing - I also get a hiccup during playback - the one file I have been using to test this on is Planet Earth Episode 1.

There is no artifacting or tearing - it just looks like what you would experience if your hardware were not up to the job.

This bothered me - so I did some trial and error. EVR and EVR Custom both did the same thing. EVR Sync worked perfectly.

I installed madvr .73 and .79 - both still had the issue.

I installed my old .34 - no problems!

I looked through the changelog for a version a little newer than 0.34 that had subtitles - I settled on 0.50.

0.50 worked too - no hiccups.

I watch 720p or 1080p .MKV files almost exclusively. NO DVDs.

So I guess what I am asking is:

1. Does anyone know what is in the newer versions that it causing them to have this hiccup?

2. Am I missing anything quality wise if I stay with 0.50 given what I watch?

Thanks for any info!

System Specs:
C2D e8500 @ 3.5ghz - Max CPU usage during test file: 35-40%
2GB DDR2 Ram - Max ram used by MPC during test: 300Mb
NVidia GTS 450 - Max GPU load during test file: 50%

So I dont think its a specs issue (especially when 0.34 and 0.50 work fine).

[ryrynz]

1. Does anyone know what is in the newer versions that it causing them to have this hiccup?

Doesn't look to be settings related, only Madshi I think knows what the issue might be and considering the number of times it's been mentioned I'm sure it's on his higher priority todo list.


2. Am I missing anything quality wise if I stay with 0.50 given what I watch?


Considering you've said that 0.34 was working for you perfectly I would say no, stick with 0.50. I remember versions as far back as 0.09 that were working fine for me.

[LordX2]

So there have been no specific Movie Output QUALITY improvements for 1080p or 720p MKV files since 0.34 or 0.50?

[LordX2]

Also - I noticed in the newer MadVR settings there was an option to select the processing of VC-1 material (Along with h.264 and another one).

This setting is not in the older versions.

Do the older versions automatically process VC-1?

[ryrynz]

So there have been no specific Movie Output QUALITY improvements for 1080p or 720p MKV files since 0.34 or 0.50?

0.66 had internal precision enhanced besides that I'm not aware of anything.

Also - I noticed in the newer MadVR settings there was an option to select the processing of VC-1 material (Along with h.264 and another one).

This setting is not in the older versions.

Do the older versions automatically process VC-1?

From 0.67 internal decoders were added, this is what you're seeing displayed.

Might be best to just stick with 0.50 until Madshi works it out, though it might be useful for you to determine at what version your lip sync problems occur and whether you experience any dropped or glitched frames.
CTRL+J will bring up the OSD to see this, also you could try 0.80/0.79 again but without full screen exclusive mode enabled.

[mbordas]

With any renderer, the first thing you should do is to setup the black/white level correctly. Which GPU are you using? When using AMD, set the pixel format to "RGB Full" (or whatever it is named) in the AMD control panel. When using NVidia, make sure you use a custom resolution. Doing this will switch the GPU to full range RGB output. Then in madVR you can switch between video and PC levels. Make sure you use the correct one.

Setting up contrast (or rather the grayscale) should be done at your display, not the video renderer. Also switch your display to the correct colorspace (BT.709), then there's no need to twiddle around with color controls in the renderer. Finally, if your display is bad and shows grossly wrong colors, you can use madVR + yCMS to calibrate your display. But for that you'd need to have your own meter.


Madshi brought this up in the lav thread and said move it over here, so I'm moving it :)

TVs have their own set of controls, nvidia/amd control panels another, mpc-hc, madVR, and even LAV video lets you control the rgb output level. The interaction between these is not obvious (to me anyway). I've tried various calibration tools/images with less than satisfactory results. I find I have to jump back and forth, tweaking some things on the TV, some on the control panel. (I have an nvidia card and am using a custom resolution).

So, how are people out there doing this that gives them a good result?

[dansrfe]

Madshi brought this up in the lav thread and said move it over here, so I'm moving it :)

TVs have their own set of controls, nvidia/amd control panels another, mpc-hc, madVR, and even LAV video lets you control the rgb output level. The interaction between these is not obvious (to me anyway). I've tried various calibration tools/images with less than satisfactory results. I find I have to jump back and forth, tweaking some things on the TV, some on the control panel. (I have an nvidia card and am using a custom resolution).

So, how are people out there doing this that gives them a good result?

This is how I did mine:

1) RGB Full or Custom Resolution in driver control panel.
2) Display hardware brightness/contrast/RGB adjustments (if RGB can be controlled by the display).
3) Fix remaining issues with ICC profile with windows or calibrate with a meter.
4) If that doesn't fix the issue then use yCMS with madVR and a good meter.

The essence of the fixing the problem deals with going down the chain from broad to specific. The earliest step you can fix calibration issues with, the better and usually the better quality the display as well.

[phoenixxl]

Madshi brought this up in the lav thread and said move it over here, so I'm moving it :)

TVs have their own set of controls, nvidia/amd control panels another, mpc-hc, madVR, and even LAV video lets you control the rgb output level. The interaction between these is not obvious (to me anyway). I've tried various calibration tools/images with less than satisfactory results. I find I have to jump back and forth, tweaking some things on the TV, some on the control panel. (I have an nvidia card and am using a custom resolution).

So, how are people out there doing this that gives them a good result?


For me when it comes to black levels (my display has a 0-255 range) I use the nvidia control panel http://i.imgur.com/pmckD.png
click adjust video control settings , select "with the nvidia settings" select advanced , disable dynamic contrast and color enhancement , select full dynamic range (0-255).

When I used to use coreavc I set the output to auto for black levels .. now I use madvr to decode h264 and don't bother with coreavc any more. My black levels are good for my monitor by just changing that option . When it comes to my display , I usually start by putting my colour gauge in the middle ,Putting my backlight at 80% (16/20), cranking up my contrast to 100% , brightness to 0. Then keep adding brightness bit by bit till it looks bright enough . From that point I tweak only very little. Also , especially with samsung tv's sharpness is basically a software sharpness filter added onto your video. Put this at 0. not 1 , not a little bit ... no .. 0 . If you want to mess with software sharpeners , use an avisynth filter .. or better , don't .. (watch out though , for some brands of display 50% is a disabled software sharpner , where values under 50 adds a software blur )
All the artificial "enhancements" some displays provide I usually set to off . For shits n giggles some days I mess with motionplus , but it's not really something I use on a regular basis. I am one of those ppl that thinks the 24 fps slideshow is something that should go extinct sooner rather than later , I want 72 / 60 fps output video for movies . Interpolation is no substitute for real freq increases .

This is a good site for test patterns , but i'm sure there are cartloads of sites with comparable things: http://www.lagom.nl/lcd-test/

What I also use the nvidia control panel for is to make a custom 23.976 hz frequency 1920x1080 mode that is as close to 24000/1001 I can be with my hardware so frames are dropped/duplicated as little as possible. To do this , open a video file , windowed in 24 fps mode (23) open nvidia control panel , and edit the custom 23 mode . If you have your madvr ctrl-j information window open (make sure mpc-hs is set up not to change frequency again when going out of full screen(full screen options)) , you will see what the exact result is for your timings. It takes a while to tweak , but after an evening you should bump on something close to 23.976 . http://i.imgur.com/MIdSS.png (if you messed up too much with custom modes , uninstall nvidia drivers completely , and install them again , then restart where you left off , i've had custom frequencies that were stuck 1hz above what i asked and was unable to remove them again, this fixed it)
What I have for a nvidia 590 is This changes for every video card , im just putting this here as an illustration.
H V
active pixels 1920 1080
Front porch 638 4
sync width 44 5
total pixels 2622 1096
refresh at 23.976

Press apply every time you test , the ctrl j info from madvr will change when you press apply , check if you are closer or farther to 23.976 , write down how close you are on a piece of paper , test again.

The number you should test with first is the Total pixels horizontal value , start at 2605 , when you reach 2700 , change the vertical value a bit , then restart from 2605 for horizontal again. If you are lucky, after some time you'll find the numbers that are ideal for your card.

!!!important!!!! If you start fiddling with modes that are way out of your display's capabilities , you may break your hardware , so don't do anything too rash!

Hope this helped a bit
Kind regards.

[Remicade]

When using AMD, set the pixel format to "RGB Full" (or whatever it is named) in the AMD control panel.
I have ATI 4670 an no option about RGB in ATI CC. How can i force RGB use ?

[italospain]

When using AMD, set the pixel format to "RGB Full" (or whatever it is named) in the AMD control panel.
I have ATI 4670 an no option about RGB in ATI CC. How can i force RGB use ?

I think you have the option only for HDMI connections

[Remicade]

I have DVI---> HDMI connection.