madVR - high quality video renderer (GPU assisted)

[mkohman]

Originally Posted by huhn

when madVR and the GPU driver are set to full range you need to set your projector to full range. i guess they use the word enhance.

lavfilter has nothing to do with this.

just read this: https://forum.doom9.org/showpost.php...16&postcount=2

attachment need admin approval no one will see them.

Cool.. Thanks.. So I will leave everything as it is

Everything at FULL..

Cheers

Sent from my moto g(6) using Tapatalk

[mv]

Originally Posted by huhn

are you using d3d11 for decoding?

Same issue with D3D11 or DXVA Copy-Back. But with D3D11 decoding de-interlacing is not enabled for some reason neither in madVR or LAV so switched to DXVA Copy-Back for now.
Tried to encrease buffer size in LAV splitter but thats is not the case.

[huhn]

d3d11 doesn't support deinterlancing that'S why i ask.
can you make a screen of the OSD?

[Redemption80]

Nvidia users who use custom modes, i know while most people were having issues with the driver rejecting this mode, some were not.

What are other Nvidia users doing now? I pretty much stuck with 390.77 for 6 months but out of curiosity i have been testing 398.11 and again can only use the EDID timings. Saying that, while my OCD dislikes the fact i have went from drops every few days to every 12mins, if im honest i can't say i actually noticed them over the course of average TV show.

Anyone who knows anything about drivers think this is a permanent change to the drivers that we will have to just live with?

[nevcairiel]

Create modes in the NVIDIA control panel, that works on all driver versions for me.

[veggav]

Found this statement:

"My main problem with a 4:2:2 transport over HDMI is that a PC is always RGB, and a 4:2:2 transport is YCbCr, so when you play something on a PC the player converts the YCbCr file to RGB, then the graphics card converts it to 4:2:2 YCbCr for HDMI, and the TV again converts it to RGB, its two extra conversions that may (and do) incur extra loss on the image, and has the potential for mis-matching conversion matrices even throwing off your colors entirely."

Is this accurate?
It's impossible to have true YCbCr on PC?

[huhn]

not perfectly accurate but close enough.

you can't use YCbCr from source to HDMI on a PC.
the solution is simple just use RGB output.

[nevcairiel]

Originally Posted by veggav

Is this accurate?
It's impossible to have true YCbCr on PC?

This is correct. PCs at least on any configuration that can run madVR are always RGB.

[veggav]

Thanks
This clears some stuff for me to understand

If I set nvidia control panel to "let colors settings be set by application" I believe this will set color based on my TV edid.

I know about chroma subsampling test to see if it' 4:4:4 or 4:2:0.

Is there a way to know if in this situation my pc is using RGB or YCbCr?

[huhn]

just set it to RGB it's not much work.

[mv]

Originally Posted by huhn

d3d11 doesn't support deinterlancing that'S why i ask.
can you make a screen of the OSD?

Sure -> https://imgur.com/a/sxqGvCx
That's after ~10-15minutes after the IPTV channel does start playing - which is one time out of 3-5. In most cases is stops after several seconds.
Other channels seem pretty same when looking at OSD but still somehow different because they do start playing without issues.

[huhn]

nothing deviantly wrong with the OSD.
the only small things i see is the 6-8 queue for decoding and the presentation queue.
the DXVA max spikes look scary.

when deinterlancing is fail does it look the same?

[Redemption80]

Originally Posted by nevcairiel

Create modes in the NVIDIA control panel, that works on all driver versions for me.

Thanks, never even thought to do try that again

Not that i had an issue sticking with 390.77 as it was working fine for the games i play, but didn't want to stick with it forever and these days video playback and MadVR takes higher priority that gaming for me.

[Clammerz]

Originally Posted by veggav

If I set nvidia control panel to "let colors settings be set by application" I believe this will set color based on my TV edid.

No, that option lets you either override application colours using the sliders below that option, or leaving the colours as the application sends them to the driver.
Strongly suggest you leave that option as "application".

Originally Posted by veggav

Is there a way to know if in this situation my pc is using RGB or YCbCr?

What your computer will send over the wire will be whatever you select in the Nvidia control panel "Change Resolution" section under "Output Format".
Strongly suggest you leave it as RGB.

[x7007]

Will there be new Madvr soon ?

[ryrynz]

Yes, some time this year.

[mv]

Originally Posted by huhn

nothing deviantly wrong with the OSD.
the only small things i see is the 6-8 queue for decoding and the presentation queue.
the DXVA max spikes look scary.

when deinterlancing is fail does it look the same?

Seems that de-interlacing doesn't really matter. If it is disabled in madVR IPTV playback can also stop.
Tried tinkering with options and to max out CPU queue (128 frames) but nothing helps, playback just stops for some reason.

[Clammerz]

Originally Posted by mv

playback just stops for some reason.

It's been a long time since I played with IPTV streams, but last time I remember the internal stream source of MPC-HC was kind of flakey with UDP streams. Not sure if that's improved over the years.
You could try using VLC as a buffer, demuxing the stream and repacking it in to another format and sending it over another protocol might help.
You could also try making the madVR buffers very small if you haven't already.

[el Filou]

@mv Is there a way to increase the minimum buffer at the start of playback for network streams in your player?
With MediaPortal I had the same issues sometimes on Live TV, playback would sometimes stop like if it had reach end of stream because the player was starved of data. I fixed it by setting a 2 second buffer. It didn't happen only with madVR, but somehow it did occur much more often with it than with EVR.

[Asmodian]

I have also noticed better performance with small buffers in madVR, I keep the "number of frames presented in advance" at 3 or 4 and GPU buffers at 4 or 6. I noticed this when I switched to Windows 10 but it doesn't seem to be a universal observation (there don't seem to be any universal observations).

It is a good idea to put "strength during fade in/out" on the same level as "default debanding strength" for reduce banding artifacts (if it is enabled) or keep the trade quality for performance option "don't rerender frames when fade in/out is detected" enabled (recommended anyway, in my opinion).