[Solved:Use WMR7 (Renderless)] MPC uses TV (16-235) luma levels for playing avs files

[ranpha]

Try running the avs file in MPC and list the exact name of the renderer used. Is it something in the region of "Video Renderer" instead of "Video Mixing Render 9 (Renderless)" etc.? Also, what is your VGA card? because I want to know why you can use the PC level pixel shader.

[clsid]

Originally Posted by ranpha

Putting stuff in the "External Filters" section of MPC options is pointless, unless:
1) You want to block a filter
2) You want to add a filter that is not registered on the system (yes that is possible! only for decoders though, doesn't work properly with splitters).
3) You want to adjust the merit of a filter
4) You want to adjust the mediatypes the filter accepts

For example placing Haali renderer there is totally useless. That will be used if and only if you select it as the preferred renderer in the options.

Edit: You probably added it there to show that it only accepts RGB32, right? Nevermind the above in that case

[ranpha]

Originally Posted by clsid

Putting stuff in the "External Filters" section of MPC options is pointless, unless:
1) You want to block a filter
2) You want to add a filter that is not registered on the system (yes that is possible! only for decoders though, doesn't work properly with splitters).
3) You want to adjust the merit of a filter
4) You want to adjust the mediatypes the filter accepts

For example placing Haali renderer there is totally useless. That will be used if and only if you select it as the preferred renderer in the options.

Nope, I list it there so that I can show TS that Haali only accept RGB32 input. I have no other way to show that.

Edit: Actually, putting renderers there can be kinda useful too. For example, if I set the renderer to System Default, and then put an exotic renderer like Nero Video Renderer (set it to Prefer), MPC-HC can actually use it to display videos.

[Avenger007]

Originally Posted by ranpha

Try running the avs file in MPC and list the exact name of the renderer used. Is it something in the region of "Video Renderer" instead of "Video Mixing Render 9 (Renderless)" etc.? Also, what is your VGA card? because I want to know why you can use the PC level pixel shader.

Options->Playback->Output...DirectShow Video set to VMR9 (renderless).
Since WMP can use PC levels, I don't see how the VGA card matters.

[ranpha]

Originally Posted by Avenger007

Options->Playback->Output...DirectShow Video set to VMR9 (renderless).
Since WMP can use PC levels, I don't see how the VGA card matters.

Well, just because you specify VMR 9 (renderless), it does not mean that renderer will be used. That's why I'm asking you to run the avs file and see what is the renderer being used (right-click on the video are and select Filters).

It has to be Video Mixing Render 9 (Renderless) being listed there to confirm that VMR9 really is being used. If yes, and 3D Surfaces has been used, you should be able to use PC level pixel shaders. If you can't even if Video Mixing Render 9 (Renderless) is used, well then that's why knowledge of your VGA card will come to play.

[Avenger007]

It says Video Mixing Render 9 (Renderless) and below that it says AVI Decompressor (YV12). They both appear irrespective of the media type used in the avs file.
Video is rendered in 2D, 3D doesn't show a difference.
Video card is Radeon X800XL.

[Sharktooth]

Driver bugs.... try the latest catalyst 8.7.
in ATI drivers the scaling depends on the res too. SD -> TV scale.... HD -> PC scale...

[wozio]

Yes, it is clearly drivers bug, ATI uses TV scale for SD sources and PC scale for HD sources (vsize >= 720). IT doesn't matter that WMP shows correct values since it can use different renderer.

And driver does matter since there is done conversion from YV12 to RGB using TV or PC scale. And ATI drivers behave like that since 6.12 or something like that. Try to force using PC scale for all resolution using "UseBT601CSC"="1" setting in registry.

[Avenger007]

I installed Catalyst 8.7 but that didn't help. I also tried an HD clip with DirectShowSource but it still used TV levels.

Just to mention something I said before, if I use overlay then the 1st instance of MPC uses TV levels but all other concurrent instances use PC levels including avs files.
How do you explain that?

[ranpha]

Originally Posted by Avenger007

I installed Catalyst 8.7 but that didn't help. I also tried an HD clip with DirectShowSource but it still used TV levels.

Just to mention something I said before, if I use overlay then the 1st instance of MPC uses TV levels but all other concurrent instances use PC levels including avs files.
How do you explain that?

Did you apply the "UseBT601CSC"="1" registry fix?

Try using older drivers such as version 6.x (the one that comes with classic control panel).

[Avenger007]

Originally Posted by ranpha

Did you apply the "UseBT601CSC"="1" registry fix?

No.

Originally Posted by ranpha

Try using older drivers such as version 6.x (the one that comes with classic control panel).

I'm not convinced it's a driver problem.

[clsid]

Well, MPC does also not deliberately mess up the levels. I doubt it does anything level related. That's all up to the decoders and renderers.

[ranpha]

Originally Posted by Avenger007

No.

If you insist on using the modern Catalyst driver, why you did not want to apply that registry fix?

[Avenger007]

Because I'm looking for the cause of the problem.
If overlay mixer is used, does the first instance use TV levels and the other instances use PC levels?

[clsid]

There can be only one instance of the Overlay Mixer. The second instance will fall back to using the system default renderer (= VMR-7 on XP).

[Avenger007]

Originally Posted by clsid

The second instance will fall back to using the system default renderer (= VMR-7 on XP).

THANK YOU very much for that bit of information!!!
I switched to Video Mixing Render 7 (Renderless) and now all media files and avs files use PC luma levels.

But why couldn't WMR9 do the same?

[Sharktooth]

bugs in drivers/videocard bios.

[wozio]

Originally Posted by Avenger007

But why couldn't WMR9 do the same?

We are telling you for some days, this is bug in drivers, which can be fixed using registry tweak.

[Avenger007]

How/where exactly am I supposed to apply this registry fix?
Is there any advantage to using WMR9 instead of WMR7?

[wozio]

Google for it and you will find thread on avsforum how apply fix.

With VMR9 you can use pixel shader based bicubic scaling for example which is much better than usuall VMR9/7 bilinear. Don't forget to set mixing mode and yuv mixing, this give best overall results.