LAV Filters - DirectShow Media Splitter and Decoders

[LigH]

I guess you could try to unpack the installers with 7-zip (did not test).

[nevcairiel]

Nightlies are only available as installers.

[wushantao]

I guess you could try to unpack the installers with 7-zip (did not test).
I've tried 7zip unpack and can't get the related files


Nightlies are only available as installers.
If don't take up too much your time, can you release a zip version pls:D?

[nevcairiel]

There are no plans to do that.

[sneaker_ger]

innounp (http://innounp.sourceforge.net/) should be able to extract the installers.

[wushantao]

There are no plans to do that.

Anyway, thanks for the software you developed

innounp (http://innounp.sourceforge.net/) should be able to extract the installers.

thx， i will try it:)

[wushantao]

innounp (http://innounp.sourceforge.net/) should be able to extract the installers.

thank you，it works perfect

[wushantao]

hi nevcairiel

maybe there is a bug for h/w decoder

lav 0.70.2.80 with evrcp

i set output format only RGB24(beacuse evrcp only 8bit)

play a 10bit file, D3D11&DXVA2(native) is NG, can not play

other decoder is ok

my gpu is iris 5200

[nevcairiel]

Don't disable any output formats. Also, 10-bit decoding requires quite new hardware, don't think a 2013 chip would be able to do that.

[VictorLS]

innounp (http://innounp.sourceforge.net/) should be able to extract the installers.
Thank you very much - innounp extracts great.

[cremor]

Small thing I noticed:
The LAV Splitter configuration GUI refers to http://1f0.de for advanced subtitle selection reference documentation, but the page on that site seems to be older than the information in the README. E.g. there is no mention of the ! operator and instead of comma and space it mentions semicolon and space as separators.

[Major_Dick]

innounp (http://innounp.sourceforge.net/) should be able to extract the installers.

Thanks for this, worked perfect.

[clsid]

Hi nev, can you add options to configure probesize and analyzeduration?

[Klaus1189]

I use LAV Filters for watching MXF-Files, but in MXF files the audiochannels are stored as single mono streams. My NLE detects the files correctly as stereo.
How do I configure LAV Filters to use left and right mono streams as one stereo stream?

[robl45]

hi guys, after something wonky happening with the computer where it would play nothing but dolby digital sound, I reinstalled all pieces with updated versions. Madvr, lav filters, mpc-be, intel video drivers, reclock. Now I was wondering with the latest lav video, what is the best hardware acceleration to pick? I have intel HD 530 graphics.

Specifically, I see these two lines in the change log

LAV Video
- NEW: D3D11 hardware accelerated decoding (native mode with madVR, Copy-Back otherwise)
- NEW: Support for hardware accelerated H.264 MVC 3D decoding on Intel GPUs

So what do I pick to be able to make use of that since I watch a lot of 3d and I use Madvr

[robl45]

maybe so, I never checked, the main thing is you dont have to manually mount it first so it plays straight from MPC-BE, havent tried with with KODI-DS though.

I'm think of switching back to ISO instead of ripping all mine to MVC MKV files, its much more convenient to keep the full bluray ISO even if it is a few gigs larger.

This works for me too, problem is if I don't rip to MKV, then I get no subtitles. Do you get subtitles?

[el Filou]

I have intel HD 530 graphics.

Specifically, I see these two lines in the change log

LAV Video
- NEW: D3D11 hardware accelerated decoding (native mode with madVR, Copy-Back otherwise)
- NEW: Support for hardware accelerated H.264 MVC 3D decoding on Intel GPUs

So what do I pick to be able to make use of that since I watch a lot of 3d and I use MadvrDepends on what madVR features you use. If you use black bars detection/zoom control or ivtc, those won't work with DXVA Native. If you don't use them then try D3D11 Native for the best performance.

[Soulnight]

I posted this message today in the Madvr thread but I noticed afterwards that this is actually off-topic for madvr and that it should be posted here. I apologize still for the double post.

Nevcairiel, I need you lights ;-)

Both random and ordered 10bits to 8bits dithering from Lavvideo generate very visible noise/structure, where Madvr "ordered" dithering is invisible to my eyes! :D But I can't use it. Here is why:

Hi,
would it be possible to make dithering in Lavvideo Decoder as good or close to the one in Madvr?

I am asking because currently I use Bluesky FRC with AMD Fluid Motion to use frame interpolation of 4K 10bits 4:2:0 24p signal to 60p.
And the output of bluesky FRC in Madvr is only 8bits, as it seems that AMD Fluid Motion itself does NOT support 10bits.
BlueskyFRC convert P010 to NV12 using driver's function, BEFORE entering AMD Fluid Motion.

My target would be to have a high quality dithering BEFORE entering AMD Fluid Motion: for example in LAVVideo Decoder.

Right now, I can see random noise generated by the dithering method used by BlueskyFRC.
I also tried to deselect 10bits output in LAVvideo decoder in order to dither before in LAVvideo decoder before even entering Blueksy FRC.
However, the result is still not near as good, as when I feed the 10bits 24p signal directly to Madvr with ordered dithering selected there.

Thanks for the help.
Florian
Thx!

[nevcairiel]

Dithering is as good as its going to get, more complex dithering on the CPU would be too expensive and far too rarely useful to warrant the complexity.
There is several reasons why dithering in madVR would look better, for one dithering as late as possible is always better, if you do it far earlier in the decoder already, you have added noise all the way through the processing chain, which only gets amplified.

[Soulnight]

Thank for taking time to answer me.
Why should dithering happen on the CPU?
Is it not GPU based?

Here a few Dithering algorithm:
http://www.tannerhelland.com/4660/dithering-eleven-algorithms-source-code/

What I don't really get is why "ordered dithering" from madvr looks perfectly clean while "ordered dithering" with Lavvideo looks very blocky with clear patterns.
I get that the further in the chain the better, but here the chain is very short --> lav-->madvr with no extra sharpness processing whatsoever.

Thx,
Florian

[nevcairiel]

Any image processing in LAV Video happens on the CPU. As such any advanced techniques are too expensive performance wise. The random or ordered dithering methods are as good as they can be, given the constraints.
If you convert a high-bitdepth image to ordinary 8-bit before the renderer, there will always be a loss, this cannot be avoided.

[Soulnight]

Ok. Well.
Now I have to hope that AMD will support AMD FLUID Motion with 10bits in the near future... :)
Is a i7 7700K that limited for a better dithering in Lavvideo? :rolleyes:
I mean right now, it's doing nothing and is letting madvr do all the heavy lifting with the GPU.

[ashlar42]

nevcariel, do you think there'll be a new supported release by the end of the year? Is there lots of worthy stuff in the nightlies?

[sneaker_ger]

Is there lots of worthy stuff in the nightlies?
https://github.com/Nevcairiel/LAVFilters/commit/12810c93c68641cb6b4da06ee960572060e534ca

Do you need them? We don't know.

[nevcairiel]

Hopefully I get some more time over the holidays to finish some things and make a release then.

[LigH]

Bad news from Microsoft: W10 Fall Creators Update removes HEVC codec (which is required to play e.g. Netflix 4K HDR); you could purchase it in the store if you need it ...

I don't know about Netflix. I don't know which combo of hardware and software it requires. Is it bound to MS Media Foundation decoders? Or would LAV Filters be a supported free alternative?

[nevcairiel]

Except its free and not for purchase.
https://www.microsoft.com/en-us/store/p/hevc-video-extension/9n4wgh0z6vhq

But nothing can replace that, since only it will support the required DRM for Netflix etc.

On that note, as of today there is also a second one for Vorbis/Theora, called "Web Media Extension"
https://www.microsoft.com/en-us/store/p/web-media-extensions/9n5tdp8vcmhs

[sat4all]

hi nevcairiel,

when playing hdr movies my external .srt and .ass subtitles look blindingly bright while embedded bluray subs looks fine. tried to lower sub renderer primary colors but it have no effect with hdr files.
is it madvr fault or xysubf? anything to do with lav filters? sorry i dont know where to ask!
any idea?

[nevcairiel]

Definitely not LAV Filters.

[sat4all]

good to know, thanks.

[bcec]

YADIF deinterlacing is not working when DXVA is enabled as hardware decoder (native or copy-back doesn't matter). Is this expected?
- Using the latest nightly (0.70.2.80)
- 1080ti with 385.69
- tried nVidia settings deinterlacing inverse telecine checked on and off, no change.

EDIT: copy-back works! :D

[LigH]

Yadif is a pure software deinterlacer. You cannot make DXVA deinterlace with Yadif in the GPU.

Oh, wait, you expected Yadif to deinterlace after pure hardware decoding ... sorry, it is late already. :o

[bcec]

Oh, wait, you expected Yadif to deinterlace after pure hardware decoding ... sorry, it is late already. :o
yup, I am assuming after doing hardware decoding, software YADIF should be able to kick in. But it doesn't.

At least the way it is presented in the UI, I was expecting it to work because I can select software deinterlacing after enabling hardware decoding.

Is it not supposed to work?

[nevcairiel]

With Copy-Back YADIF should be working fine. With Native it cannot work.

The reason options dont grey out is simple: Not every clip can be hardware decoded, and for those all software options always apply.

[bcec]

you are absolutely right (why wouldn't you :))

copy back works fine. Thank you for the quick follow-up.

[ashlar42]

Hopefully I get some more time over the holidays to finish some things and make a release then.Thanks. I didn't want to put pressure on you in any way. Take all the time needed. :)

[mclingo]

Hi, can anyone tell me if FSE (full screen exclusive) is required for Full frame packed MVC playback using AMD cards, I cant get it to work without using MADVR with FSE turned on.

[nevcairiel]

This is not related to LAV Filters, it only performs decoding.

[Klaus1189]

I use LAV Filters for watching MXF-Files, but in MXF files the audiochannels are stored as single mono streams. My NLE detects the files correctly as stereo.
How do I configure LAV Filters to use left and right mono streams as one stereo stream?

Do not forget about me ... :)

[nevcairiel]

There are no plans to handle those.

[JEEB]

I use LAV Filters for watching MXF-Files, but in MXF files the audiochannels are stored as single mono streams. My NLE detects the files correctly as stereo.
How do I configure LAV Filters to use left and right mono streams as one stereo stream?

As long as the MXF file format contains no hints about its contents, I do not think it's a good idea to start implicitly poking around this unless we're having the user specifically mix it in some way. If you know of MXF providing this metadata, feel free to tell about it to ffmpeg-devel, but so far it has either been in a separate XML file (if even that!), or completely vendor-specific (we had some stuff from Vendor X that did it like this, and some stuff from Vendor Y that did it like this).

I have dealt with MXF files where you had 8 audio tracks and first two of them were used for stereo, as well as MXF files where the track had 8 channels (or 6) of audio, of which only first two were actually to be actively utilized for mixing.

[aufkrawall]

nev, is there something special about VP9 decoding on certain CPUs?
Decoding YT 4k 60fps VP9 video on a Haswell CPU shows very high CPU usage, while it is much lower with mpv.
Oddly, there is also such a difference between browsers. Like with mpv, CPU usage in Firefox is quite low, while it is much higher in Chrome and Edge.
This is only the case here with Haswell (4770k), with Skylake (6700k) the differences are much smaller.

[Megalith]

How does LAV Audio manage to send a Dolby or DTS signal when the audio renderer isn't set to allow bitstreaming?

I recently set up a new pre-processor and was disappointed with how long it took to lock onto a Dolby or DTS signal (seeking would result in a silence of three to four seconds) but did not realize until today that "allow bitstreaming" was unchecked in my audio renderer's (MPC-HC Internal Audio Renderer) settings. Doing so allowed my pre-processor to lock onto the bitstream almost instantly and there is no more silence when I seek to different positions, but I am still curious why I didn't just get silence when that option was unchecked.

[el Filou]

Decoding YT 4k 60fps VP9 video on a Haswell CPU shows very high CPU usage, while it is much lower with mpv.
Oddly, there is also such a difference between browsers. Like with mpv, CPU usage in Firefox is quite low, while it is much higher in Chrome and Edge.Do you have a discrete graphics card in that Haswell system?
Someone told me Firefox now used hybrid VP9 decoding on their system (Sandy Bridge + Radeon 290), maybe mpv is doing the same?

[Pat357]

How does LAV Audio manage to send a Dolby or DTS signal when the audio renderer isn't set to allow bitstreaming?

but I am still curious why I didn't just get silence when that option was unchecked.

If bitstreaming is unchecked, LAV decodes the Dolby or DTS stream to an uncompressed n-channel wav like stream. It can do this because ffmpeg supports decoding such streams to uncompressed n-channel wav-like stream.
No magic involved, just plain decoding ! :p

[clsid]

Intel specific DXVA mode for VP9:
https://forum.doom9.org/showthread.php?p=1827194

Might be worthwhile to add?

[nevcairiel]

If it has a specific mode, that usually means it also doesn't work like the normal mode.

[aufkrawall]

Do you have a discrete graphics card in that Haswell system?
Someone told me Firefox now used hybrid VP9 decoding on their system (Sandy Bridge + Radeon 290), maybe mpv is doing the same?
No discrete card. I think it's also entirely impossible that either a Sandy Bridge IGP or the R9 290 can do any VP9 decoding, Sandy Bridge IGP is garbage and so is the video decoder on Hawaii GPU.
hwdec=no in mpv also doesn't allow any doubts. ;)

[el Filou]

Note that I specified hybrid decoding, I know Hawaii's fixed-function decoder can't do VP9.

[mclingo]

remove