LAV Filters - DirectShow Media Splitter and Decoders - Page 456

STaRGaZeR · 14th February 2012, 22:57

Quote:

Originally Posted by nevcairiel

PS:
For anyone wondering when 0.47 will be released, i only want to finish one feature, and then i would start preparing a release, so if everything goes well, the end of the week!

Good luck with that native implementation

ryrynz · 14th February 2012, 23:58

Quote:

Originally Posted by nevcairiel

With 0.27 of the QS decoder, and LAV and ffdshow now using the same settings, the upcoming LAV 0.47 and the latest nightly build of ffdshow perform basically the same, with a very minor loss for ffdshow, but nothing worth noting

Legend.

Quote:

Originally Posted by nevcairiel

Didn't we agree to go testing higher resolution material?

Yeah I know that's a preference for development but when there's such a large discrepancy between versions with this clip and with it being the content I mostly play I figured I'd keep testing with it.

New test! same file, run 5x with high priority.

ffdshow 4322 egur 1580 FPS
LAV 09212cac599d 1647 FPS

We have a new winner, you've nailed it.

Quote:

Originally Posted by nevcairiel

your system is just screwed up.

Guess you fixed it then

Cheers.

nevcairiel · 15th February 2012, 07:46

Quote:

Originally Posted by ryrynz

Guess you fixed it then

Cheers.

Guess so!
Glad the optimizations also fixed your "problem", and i can really close the chapter on this for good.

ddjmagic · 15th February 2012, 10:45

Quote:

Originally Posted by ddjmagic

Quick question, I have a i3 2120 using MPC-HC w Lav Filters/EVR custom renderer. Under Lav Video settings - hardware decoder to use, I have 2 available options, Intel Quicksync or DXVA2 (copy) which option would be best? For BD and Remux playback ?

Quote:

Originally Posted by nevcairiel

If your CPU supports it, use QuickSync. A i3 2120 should be fine with it.

Thanks for the help setting it to Quicksync works great.
I did try DXVA (copy) but it completely broke playback, there was blocking on the image and when I switched audio or subs it froze up and I had to restart MPC. Anyone have any idea why this could be?

nevcairiel · 15th February 2012, 11:10

Quote:

Originally Posted by ddjmagic

I did try DXVA (copy) but it completely broke playback, there was blocking on the image and when I switched audio or subs it froze up and I had to restart MPC. Anyone have any idea why this could be?

DXVA2 isn't fully compatible with Intel, i suggest to stick to QuickSync and don't worry about it.

red5goahead · 15th February 2012, 12:02

Hi.

Lately I'm trying to add the support for the lav codec into an application for the italiansubs.net community . It's a VisualSubSync modded version of the original one (it wrote in Delphi 7)
(http://www.visualsubsync.org/). Since a long time I use the mpc-hc codec to build a own filtergraph. Lav is an awesome alternative because it have only 3 filters for all container and formats. No problems at all even using filter without any registration.
Only an issue with an mkv with a 6 ch. /ac3 . the center channel seems very lack of volume level . I don't know why. is it a known problem?
some questions:

Is it possibile to have a scaler filter or is it already avaiable?
Is it possibile to have into the audio interface some method to enable or disable some channel? When vss extract the audio to build its graphics wave would be nice enable only the center channel because the subtitles are related to the dialogues.

thanks.

edit: please note . the problem with the center channel is only with Plantronics 626 DSP usb headphone. using the realtek audio on board there are no issues. the same Plantronics 626 DSP do not have any problems with other audio decoder such as mpa audio decoder.
weird.

nevcairiel · 15th February 2012, 13:27

Sounds like you suffer from missing downmixing, which means you only hear left and right channels, and the center is not mixed into the two.

red5goahead · 15th February 2012, 23:50

A new question:

why a different channel mapping for lav and ffdshow?

lav->side left/right
ffdshow-> back left/right

probably this is the cause in Media Portal and it MP Audio Renderer that with lav I got no sound with my Xonar DX.

thanks.

Midzuki · 16th February 2012, 00:26

Quote:

Originally Posted by red5goahead

A new question:

why a different channel mapping for lav and ffdshow?

lav->side left/right
ffdshow-> back left/right

...

It's because some people think the back channels are back channels, whereas other people think the back channels should be side channels.

BTW, Imageshack sucks terribly.

kasper93 · 16th February 2012, 00:42

Quote:

Originally Posted by red5goahead

probably this is the cause in Media Portal and it MP Audio Renderer that with lav I got no sound with my Xonar DX.

Have you set proper input/output channel number in Xonar Audio Center?

mindbomb · 16th February 2012, 01:37

i dont understand why the asus software asks you to specify how many channels in the input.

seems like there should be an autodetect for that.

kalston · 16th February 2012, 01:56

Because Asus can down/up mix according to your needs and convert everything to one single format.

red5goahead · 16th February 2012, 09:59

Quote:

Originally Posted by kasper93

Have you set proper input/output channel number in Xonar Audio Center?

Yes. the setup is correct. With ffdshow the Mp audio renderer work fine probably because those side channel is not supported by wasapi mode with the xonar.

balkerman · 16th February 2012, 11:40

Anyway to enable Quicksync for use with an i3 clarkdale!

egur · 16th February 2012, 13:24

Quote:

Originally Posted by balkerman

Anyway to enable Quicksync for use with an i3 clarkdale!

Pre SandyBridge CPUs used a lower API version of the Media SDK.
Though it's probably possible to enable older Nehalem/Westmere era iGPUs, it not easy for me:
* I don't have a system to test this.
* The Media SDK DLL is not shipped with the driver. You'll need to install it (Media SDK 1.5). I can't find it on the web these days.
* The older API means that not everything will work.

I tried and failed to make it work on my Penryn based laptop.

I recommend using a SW decoder (or use your dGPU HW acceleration) for pre SNB systems. Sorry.

nevcairiel · 16th February 2012, 19:27

Here goes.

http://files.1f0.de/lavf/LAVFilters-...245-dxva2n.zip

This build features a DXVA2 "native" decoder, which means it delivers the decoded image directly to the renderer, and never copys it back to system memory.
This is in line with all "classic" DXVA2 decoders, has no performance penalities from copying the frame, but instead has some limitations.

For example, the software fallback has to rely on the information it gets in the media type, if the information is incomplete or just plain wrong, and the actual movie is incompatible to DXVA, it will not be able to fallback to software at this point (neither will most other DXVA decoders, so this is nothing new).
Otherwise, it seems to work pretty ok in my limited tests, but i'm looking forward on feedback from other people.

Remember, only works with EVR and only on Vista/7. If you try to use it with any other renderer, it will automatically fallback to software.

Note that this is a beta build, so if you dare to test it, please report how it behaves for you, even if all is just going fine.
If you encounter issues, please always state your GPU and the driver version. Note that NVIDIAs 285 WHQL driver has a bug that breaks DXVA decoding.

Thunderbolt8 · 16th February 2012, 19:33

can the other copy back decoder also stay, because it works with madvr and post processing stuff, unlike the real dxva2 decoder. that one is useless for me.

nevcairiel · 16th February 2012, 19:35

Why would you think something is being removed?
In that build the copy back decoder is broken, actually, but i'm fixing it.

CruNcher · 16th February 2012, 20:13

Nice really nice though i guess most of the decoding issues with the DXVA copy back decoder also still apply for the native ?

mbordas · 16th February 2012, 20:22

the new native dxva2 decoder gives me half the gpu usage versus cuvid on my gt 440 w/290.53 driver, at least on 1080p60 samples (~30% vs 16%). Hooray (I think?) How is that possible?

15th February 2012, 12:02	#9106 \| Link
red5goahead Registered User Join Date: Jul 2007 Location: Italy Posts: 51	Hi. Lately I'm trying to add the support for the lav codec into an application for the italiansubs.net community . It's a VisualSubSync modded version of the original one (it wrote in Delphi 7) (http://www.visualsubsync.org/). Since a long time I use the mpc-hc codec to build a own filtergraph. Lav is an awesome alternative because it have only 3 filters for all container and formats. No problems at all even using filter without any registration. Only an issue with an mkv with a 6 ch. /ac3 . the center channel seems very lack of volume level . I don't know why. is it a known problem? some questions: Is it possibile to have a scaler filter or is it already avaiable? Is it possibile to have into the audio interface some method to enable or disable some channel? When vss extract the audio to build its graphics wave would be nice enable only the center channel because the subtitles are related to the dialogues. thanks. edit: please note . the problem with the center channel is only with Plantronics 626 DSP usb headphone. using the realtek audio on board there are no issues. the same Plantronics 626 DSP do not have any problems with other audio decoder such as mpa audio decoder. weird. Last edited by red5goahead; 15th February 2012 at 12:14.

15th February 2012, 13:27	#9107 \| Link
nevcairiel Registered Developer Join Date: Mar 2010 Location: Hamburg/Germany Posts: 10,347	Sounds like you suffer from missing downmixing, which means you only hear left and right channels, and the center is not mixed into the two. __________________ LAV Filters - open source ffmpeg based media splitter and decoders Last edited by nevcairiel; 15th February 2012 at 15:35.

16th February 2012, 19:27	#9116 \| Link
nevcairiel Registered Developer Join Date: Mar 2010 Location: Hamburg/Germany Posts: 10,347	Here goes. http://files.1f0.de/lavf/LAVFilters-...245-dxva2n.zip This build features a DXVA2 "native" decoder, which means it delivers the decoded image directly to the renderer, and never copys it back to system memory. This is in line with all "classic" DXVA2 decoders, has no performance penalities from copying the frame, but instead has some limitations. For example, the software fallback has to rely on the information it gets in the media type, if the information is incomplete or just plain wrong, and the actual movie is incompatible to DXVA, it will not be able to fallback to software at this point (neither will most other DXVA decoders, so this is nothing new). Otherwise, it seems to work pretty ok in my limited tests, but i'm looking forward on feedback from other people. Remember, only works with EVR and only on Vista/7. If you try to use it with any other renderer, it will automatically fallback to software. Note that this is a beta build, so if you dare to test it, please report how it behaves for you, even if all is just going fine. If you encounter issues, please always state your GPU and the driver version. Note that NVIDIAs 285 WHQL driver has a bug that breaks DXVA decoding. __________________ LAV Filters - open source ffmpeg based media splitter and decoders

16th February 2012, 19:33	#9117 \| Link
Thunderbolt8 Registered User Join Date: Sep 2006 Posts: 2,197	can the other copy back decoder also stay, because it works with madvr and post processing stuff, unlike the real dxva2 decoder. that one is useless for me. __________________ Laptop Lenovo Legion 5 17IMH05: i5-10300H, 16 GB Ram, NVIDIA GTX 1650 Ti (+ Intel UHD 630), Windows 10 x64, madVR (x64), MPC-HC (x64), LAV Filter (x64), XySubfilter (x64) (K-lite codec pack)

16th February 2012, 19:35	#9118 \| Link
nevcairiel Registered Developer Join Date: Mar 2010 Location: Hamburg/Germany Posts: 10,347	Why would you think something is being removed? In that build the copy back decoder is broken, actually, but i'm fixing it. __________________ LAV Filters - open source ffmpeg based media splitter and decoders

15th February 2012, 23:50	#9108 \| Link
red5goahead Registered User Join Date: Jul 2007 Location: Italy Posts: 51	A new question: why a different channel mapping for lav and ffdshow? lav->side left/right ffdshow-> back left/right probably this is the cause in Media Portal and it MP Audio Renderer that with lav I got no sound with my Xonar DX. thanks.

16th February 2012, 01:37	#9111 \| Link
mindbomb Registered User Join Date: Aug 2010 Posts: 576	i dont understand why the asus software asks you to specify how many channels in the input. seems like there should be an autodetect for that.

16th February 2012, 01:56	#9112 \| Link
kalston Registered User Join Date: May 2011 Posts: 164	Because Asus can down/up mix according to your needs and convert everything to one single format.

16th February 2012, 11:40	#9114 \| Link
balkerman Registered User Join Date: Jan 2012 Location: Australia Posts: 15	Anyway to enable Quicksync for use with an i3 clarkdale!

16th February 2012, 20:13	#9119 \| Link
CruNcher Registered User Join Date: Apr 2002 Location: Germany Posts: 4,926	Nice really nice though i guess most of the decoding issues with the DXVA copy back decoder also still apply for the native ? __________________ all my compares are riddles so please try to decipher them yourselves :) It is about Time Join the Revolution NOW before it is to Late ! http://forum.doom9.org/showthread.php?t=168004 Last edited by CruNcher; 16th February 2012 at 20:28.

16th February 2012, 20:22	#9120 \| Link
mbordas Registered User Join Date: Jul 2011 Posts: 65	the new native dxva2 decoder gives me half the gpu usage versus cuvid on my gt 440 w/290.53 driver, at least on 1080p60 samples (~30% vs 16%). Hooray (I think?) How is that possible?