LAV Filters - DirectShow Media Splitter and Decoders

It is a pity, will it be just as well as it will be the same time? I understand correctly

[mclingo]

Originally Posted by foxyshadis

A situation like that sounds more like a display driver bug is being triggered. Interesting that it might be triggered due to 3D bypassing acceleration; what happens with normal 1080p if you turn off HW acceleration entirely?

That, or it's triggering a bug in your TV.

Hi, I only get this with 3D, no loss off HDMI in any decoding mode with 1080p or 4k stuff.

I guess I could accept its an issue with my particular setup but i'm not convinced yet, there arent many AMD RX/4k/HDR 3D Tv owners out there so the lack of issues reported here could simply be that.

I only own one 3D tV so I cant test this, I have bypassed the receiver though and it still happens.

I also suspect its something to do with WIN10 and Full Screen Exclusive mode and how that interacts with MADVR refresh rate switching and D3D11.

[mclingo]

Originally Posted by huhn

you could try a 3D computer game and see if the same happens.

I might look into that, my crapp RX 460 will really struggle with any 3D game

[nevcairiel]

This is all outside the scope of LAV Filters, it has no control over your video output or your drivers. So please debug your problem elsewhere.
As said above, the hardware acceleration code is never executed with 3D decoding, since that all goes through the Intel decoder, not the typical hardware-accelerated path.

[mclingo]

I wouldnt no where do go with this, it only affects D3D11, which forum deals with how that interacts with media players and refresh rate / resolution changing?

[nevcairiel]

All I know: Its not in this thread.

[LigH]

I would suggest a separate thread in Software players if there isn't already an existing one with similar topic.

[mclingo]

Originally Posted by LigH

I would suggest a separate thread in Software players if there isn't already an existing one with similar topic.

good idea, i've posted there, I've also posted on MPC-BE thread in case this issue rings a bell with anyone there.

Cheers.

[LigH]

"Also" is "cross-posting" and not very appreciated. One thread per issue is enough.

[Grimsdyke]

Originally Posted by Grimsdyke

@ Nev. When using D3D11 and Automatic/Native I am getting sometimes green screens in MPC-BE (+ MadVR) especially on lower resolution files !! The file keeps playing and I hear the sound.
The only way to fix this seem to be to select the GPU in LAV video decoder settings. Please let me know if you need more details.

Tested with the latest build (26) and this issue still occurs !! Is this on your radar or unfixable ??
To maybe clarify - with 'sometimes' I meant that not all files are affected but the ones that are always turn 'green'. Thx

[nevcairiel]

Issues like that which are exclusive to Native D3D11 mode you should report to madshi, if it happens only with certain files make sure to include one. madVR directly processes the textures in Native mode, so only he has access to see whats going on.

[fireattack]

I have a question about downmix mix level default parameters.

According to the previous reply from nevcairiel, the default setting should match with Rec. ITU-R BS.775.
If I read it correctly, the formula seems should be something like

Lo = 1.0 * L + 0.7071 * C + 1.0 * Ls;
Ro = 1.0 * R + 0.7071 * C + 1.0 * Rs;

I.e.

Center mix level = 0.7071,
Surround mix level = 1

If that's still the case, why the current default value is

Center mix level = 0.71,
Surround mix level = 0.71

But again, that discussion was very long time ago, so something could be changed afterwards (tried to search, but can't find any).

Thanks!

[brazen1]

Can anyone help me with settings for AAC audio? I've been converting AAC 7.1 ( which only plays in stereo) to AC3 (DD surround) through FFmpeg and CMD commands using my Denon S720W. I recently discovered that KODI has a setting that will transcode to AC3 on the fly using its internal player and produces DD surround. I would like to play AAC in surround using MPC-HC/BE if possible also. Currently they only produce stereo. I am using LAV Filters with the players and have deselected all the internal filters. Is there a specific combination of settings in the player(s), LAV splitter, and LAV audio 71.0.28 that will do this without affecting other formats negatively. I want to set and forget. Using HDMI.

[sneaker_ger]

LAV should only output stereo with e.g 5.1 input if:
1.) you have activated mixing to stereo in LAV Audio or
2.) you have set Windows'/your audio driver's mixer settings to stereo

[brazen1]

Thank you for the quick reply. I have not mixed anything to stereo in LAV audio. Mixing is not enabled. I have Windows configured as 7.1 and tests good for all my speakers. However, in KODI I have always used Wasapi and configured for 7.1 which produced AAC stereo. Recently I discovered configuring KODI for 2.0 reveals a new passthrough setting - Enable DD AC3 transcoding which works. Any other suggestions?

[sneaker_ger]

Originally Posted by brazen1

I have not mixed anything to stereo in LAV audio.

Are you sure you have looked at the correct LAV instance? Start playing a file in MPC-HC, then while it plays go "Play"- >"Filters"->"LAV Audio [...]" and look again.

[brazen1]

Yes. Mixing is not enabled. I do see the status tab. It shows all the channels outputting? I selected APPLY. This made no difference either. Still stereo at AVR.

[sneaker_ger]

Are any other filters active? (Play->Filter->Copy filter list ..)

Try to search for other mixer settings in Windows/driver settings. Remember that HDMI may be running through Nvida/AMD/Intel driver settings, not your onboard Realtek or whatever.

[brazen1]

Filters currently loaded:
- Default DirectSound Device
- madVR
- LAV Audio Decoder
- LAV Video Decoder
- LAV Splitter Source

Yes, I use NVidia High Def Audio. I have nothing else onboard I know of and I built the HTPC. Nothing else in device manager either except the MS high def controller. Should I be using some other onboard Realtek or whatever? I never have and my audio has always been perfect, except AAC.

[sneaker_ger]

Is your sample really good? Try this one to be sure.

Btw, MPC-HC also has wasapi. In Options->Playback->Output->Audio Renderer->Internal Audio Renderer. Then to enable wasapi exclusive Options->Internal Filters->Audio Renderer->Exclusive mode. It should not be necessary but you can at least test it or use as a workaround.