LAV Filters - DirectShow Media Splitter and Decoders [Archive] - Page 453

jaytrinitron

21st February 2018, 06:37

There is no Atmos/DTS:X decoder. ffmpeg can decode only TrueHD/DTS.

Oh yeah I had forgot there was nothing for PC that decodes that. But Atmos and DTS:X have a DTS-HD MA and TrueHD core right? And what about on the video side? Can I still put a UHD disc in and have MPC-HC play it, with HDR, 4k, 10 bit and all the rest (using LAV)?

nevcairiel

21st February 2018, 08:08

Oh yeah I had forgot there was nothing for PC that decodes that. But Atmos and DTS:X have a DTS-HD MA and TrueHD core right? And what about on the video side? Can I still put a UHD disc in and have MPC-HC play it, with HDR, 4k, 10 bit and all the rest (using LAV)?

If you have a way to decrypt the disc, it should work.

PCU

22nd February 2018, 16:54

i don't know why, but the quality of d3d11 hardware acceleration is so much better than intel quicksync.

Klaus1189

22nd February 2018, 17:47

I use latest versions of MPC-BE x64, LAV Filters and madVR and MPC-BE crashes when I play a file recorded with my STB. Going back to 0.71.0-5 works fine.

EDIT: reinstalled latest LAV 0.71.0-8, now it is fine. I don't know what it was.

P.J

23rd February 2018, 16:28

Why does AYUV use about twice more CPU rather than RGB32 for 4:4:4 10bit videos? :confused:

neno

23rd February 2018, 21:22

Hi, nevcairiel. I use lav 0.71 with latest madVR in D3D11 native mode, and the picture is always(no matter what video) split into the top and bottom part. The top part is the picture content turned into a flat size, and the bottom part is often a green image.
While D3D11 CB can just play normally.
I use WIN10 and a RX480.
Is there any idea about the problem?
Thanks.

nevcairiel

23rd February 2018, 21:27

Sounds like a driver problem to me. But you'll probably want to talk to madshi instead, since madVR handles the processing of "native" frames.

JarrettH

24th February 2018, 07:24

Did anything change with the audio mixing or DRC since the last stable version?

I can't decide now whether to use software or D3D11. Versus software, D3D11 is a bit faster on native 1080p movies and slightly slower when upscaling (for example 720p) is involved.

steakhutzeee

27th February 2018, 16:05

Hi, can you give me details about this?

D3D11 hardware accelerated decoding (native mode with madVR, Copy-Back otherwise).

Can't update lav/madvr now. This means in madvr there is a new D3D11 option?

Just curious, btw I'll update these days. Thanks :)

sneaker_ger

27th February 2018, 16:08

https://forum.doom9.org/showpost.php?p=1833761&postcount=22604

kolak

2nd March 2018, 15:38

PCs cannot stay in YUV. Its always RGB at some point. Basically you always have to feed RGB to the GPU, even if the GPU then outputs YUV again (which should therefor be avoided, if possible).

What about OpenGL?

nevcairiel

2nd March 2018, 15:55

The final frame buffer is always RGB.

kolak

2nd March 2018, 17:56

Thank you.
Is it really a problem assuming we convert YUV<=>RGB at high precision? All high-end grading/finishing tools operate on GPU so on RGB (even if source is YUV based) and no one really questions this.
I assume this is not end of the world (if done accurately) as at the end signal will became RGB anyway (at the display).

If we talk about pure transcoding then this should be avoided (as in this case it's much easier).

nevcairiel

2nd March 2018, 17:59

No, its perfectly fine. There is just a bit of loss in every YUV<->RGB conversion due to potential rounding, so if you do something like YUV (file) -> RGB (frame buffer) -> YUV (HDMI) -> RGB (display), thats a lot of conversions. Best would of course be to do YUV (file) -> RGB (everywhere else), but a lot of things don't necessarily support that.

kolak

2nd March 2018, 18:15

So in case of a player if you can send RGB over HDMI it's better to set output to RGB to limit number of conversions.

In the same time if you use e.g. DisplayPort 1.2+ connection to your "end monitor", which supports RGB for "all" signals (at least up to UHD 60p 10bit) then you don't really loose quality at all compared to some pro equipment which can send YUV data "as is" to monitor. In both cases you end up with 1x YUV->RGB conversion for YUV based source (assuming your player path is well designed). The difference is that conversion happens at different stage.
For high-end work which is RGB based (from source) you are actually gaining quality and reducing delay which is always present with additional pro cards (data has to go from GPU to the card).

pkirill

15th March 2018, 12:08

Hello Hendrik, thanks for the great project.
We are making an educational application (CoSpaces) and we need to be able to play mp4 and m4a audio in our app.
We have many target platforms: WebGL, iOS, Android, and Windows.
All we know that on Windows DirectShow stack does not support playing m4a out of the box.
So I have two questions here:

Is it possible to include you binaries into our app ?
Is it possible to use you binaries inside the app (in our process) without COM registration on the admin level, having only user level rights.
To build a FilterGraph over a m4a with you splitter in the process.

Thanks
-Kirill

LigH

15th March 2018, 12:34

LAV Filters is a DirectShow interface for the libavcodec / libavformat libraries, the kernels of the ffmpeg project. To create platform independent software, you may better focus on using the kernel libraries, rather than subtracting DirectShow from this one, I believe... mplayer derivates and VLC may be the more useful places to start from, IMHO.

pkirill

16th March 2018, 10:55

LAV Filters is a DirectShow interface for the libavcodec / libavformat libraries,

That is exactly what I need.
I need only windows implementation, all other plaforms has build in playing capabilities.

LigH

16th March 2018, 14:51

But you don't want to install them as DirectShow filters system-wide?

MPC-HC uses LAV Filters as "internal splitter/decoder", and the AviSynth plugin DSS2Mod (to be found e.g. in the Xvid4PSP project, or in the AviSynth Wiki) can do that as well. If you have developers who are able to read their C/C++ sources, you will most probably find how they do that directly, bypassing DirectShow automatic graph building.

clsid

16th March 2018, 15:51

Windows has native support for .m4a playback through Media Foundation.

manolito

16th March 2018, 16:31

Windows has native support for .m4a playback through Media Foundation.

Not WinXP... :D:D

pikaczu

17th March 2018, 13:22

I am using the mpc hc 1.7.15 program, I have given the aac file for the rehearsal, and there is such a thing, it's about time:

Klaus1189

17th March 2018, 14:35

I am using the mpc hc 1.7.15 program, I have given the aac file for the rehearsal, and there is such a thing, it's about time:

better use google drive or similar for posting pics, I cannot view your jpg right now, for example. It is still pending ...

LigH

17th March 2018, 14:44

https://frupic.frubar.net (sorry for suggesting this over and over, groundhog day again)

pikaczu

17th March 2018, 19:46

better use google drive or similar for posting pics, I cannot view your jpg right now, for example. It is still pending ...

good, please

https://images83.fotosik.pl/1019/e29588f59d353a85m.jpg (https://www.fotosik.pl/zdjecie/e29588f59d353a85)

LigH

17th March 2018, 19:56

It displays a playing time of 28:32:59; which other value would you have expected instead?

And BTW, this is a play time of an MKV, according to the window title, what do you mean with AAC? Did you try to load an external audio file in parallel? Missing details.

pikaczu

17th March 2018, 20:18

this is the time, after loading aac file.

nevcairiel

17th March 2018, 20:34

I have no plans to work on that. You should wrap your audio into an actual container if you are about its duration being accurate.

LigH

17th March 2018, 20:38

AAC has a variable bitrate. To estimate the playing time accurately, an application would have to collect statistics about the whole audio; a DirectShow decoder will not be able to do that until you have played the whole media already.

pikaczu

17th March 2018, 20:40

It is a pity that there will be no amendment.

how?

pkirill

19th March 2018, 12:25

Windows has native support for .m4a playback through Media Foundation.

It can not render it using FilterGraph.

But you don't want to install them as DirectShow filters system-wide?

I do not have an option to register it system wide.

MPC-HC uses LAV Filters as "internal splitter/decoder", and the AviSynth plugin DSS2Mod (to be found e.g. in the Xvid4PSP project, or in the AviSynth Wiki) can do that as well. If you have developers who are able to read their C/C++ sources, you will most probably find how they do that directly, bypassing DirectShow automatic graph building.

Thanks, will look at this.

LigH

19th March 2018, 12:35

No, Media Foundation is not DirectShow.

pkirill

20th March 2018, 16:44

No, Media Foundation is not DirectShow.

Right, i support what i need, looking at this now.
It seems that it is something I need.
Thanks

nevcairiel

20th March 2018, 18:37

You can do what you ask with LAV Filters, several other projects load it without registration, and bundling with apps is allowed within what the license allows.

tyrindor

20th March 2018, 22:13

LigH

20th March 2018, 22:23

With "signs", they possibly mean "scene subtitles" (translations of readable signs only) in contrast to complete translations of the whole audible speech?

tyrindor

20th March 2018, 22:42

With "signs", they possibly mean "scene subtitles" (translations of readable signs only) in contrast to complete translations of the whole audible speech?

Yes, that's correct. I'd like to ignore them and select the next another english subtitle track if possible.

sneaker_ger

20th March 2018, 22:42

Is there anyway to have advanced splitter mode ignore all subtitles labelled as "Signs"?

Right now I have it set to: "jpn:*|d;jpn:eng;*|f" but many releases flag "signs" as the default subtitle track for anime, and put english subtitles on track 2.
Not really. I think the "!" operator doesn't work on track names (@nev: feature request?). Maybe you could do e.g.:
jpn:eng|!d jpn:eng
Then it would select the non-default English track first and only if that doesn't exist the first English track regardless of default/forced flagging.

tyrindor

20th March 2018, 23:09

Not really.

You could do e.g.:
jpn:eng|!d jpn:eng
Then it would select the non-default English track first and only if that doesn't exist the first English track regardless of default/forced flagging.

Well at least I can do that while watching shows that do this. Thanks.

I've been trying forever to get my subtitles to work automatically but there's so many releases with flagged "default" english subtitle tracks on english language content throwing me off. I can't get my anime to play well with them.

For example:
*|d;eng:*|f;jpn:eng

I would read this as "First set default track, if english is found enable english forced subs instead, if Japanese is found enable english subs instead. This doesn't work though, english audio content still has default subs selected. Putting *|d at the end instead has the same effect.

So what's the best way to achieve this in one command?
- If japanese audio is found enable english subs, if no english subs enable default subs.
- If english is found enable forced subs.
- If unknown language (or simply not english) enable default subs. <-this seems impossible without overwriting everything else.

Greatly appreciated...

sneaker_ger

20th March 2018, 23:26

For example:
*|d;eng:*|f;jpn:eng

I would read this as "First set default track, if english is found enable english forced subs instead, if Japanese is found enable english subs instead. This doesn't work though, some english audio content still has default subs selected.
Priority is from left to right. It stops after the first match. If "*|d" (which I assume is the same as "*:*|d") is there it will match any audio, any subtitle language as long as there is a track marked as "default". Nothing after that is considered anymore when such a match is found.

So what's the best way to achieve this in one command?
- If japanese audio is found enable english subs, if no english subs enable default subs.
- If english is found enable forced subs.
- If unknown language enable default subs. <-this is what I am struggling with, it always overwrites everything else.
If I strictly go by your description:
jpn:eng jpn:*|d eng:*|f *:*|d

But I also assume you want subtitles to be off for English audio unless there is English forced subs. You need an extra rule for that so it doesn't match the last rule which is basically a wildcard:
jpn:eng jpn:*|d eng:*|f eng:off *:*|d
And mostly you don't want any forced subtitles for English audio but also the English ones first:
jpn:eng jpn:*|d eng:eng|f eng:*|f eng:off *:*|d

You have to be exact.

tyrindor

20th March 2018, 23:39

Man you are a lifesaver, I've been tweaking it for days trying to figure it out. Just tested like 20 various problematic MKVs and it did them all correctly.

Thanks!

chros

21st March 2018, 10:55

@sneaker_ger: thanks for the detailed info, I didn't even know that feature exists :)

Grimsdyke

21st March 2018, 13:00

@ 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.

pkirill

21st March 2018, 13:33

You can do what you ask with LAV Filters, several other projects load it without registration, and bundling with apps is allowed within what the license allows.

Do you have any Idea how to do that ? In terms of C++.

LigH

21st March 2018, 13:57

As already mentioned...

MPC-HC uses LAV Filters as "internal splitter/decoder", and the AviSynth plugin DSS2Mod (to be found e.g. in the Xvid4PSP project, or in the AviSynth Wiki) can do that as well.

The amount of source code in DSS2Mod may be more manageable for reading and searching.

pkirill

22nd March 2018, 15:49

Well I managed to get it working, at least on my local machine:
I looks like that

LAVSplitterClassID = "171252A0-8820-4AFE-9DF8-5C92B2D66B04";
HMODULE hDLL = loadLibrary("LAVSplitter.ax");
LPFNGETCLASSOBJECT pFactory = GetProcAddress(HMODULE(hDll), "DllGetClassObject");
IClassFactory * pFactory = pFactory(LAVSplitterClassID, _uuidof(IClassFactory));
IUnknown *filter = pFactory.CreateInstance();
IBaseFilter *pfilter = filter->QueryInterface<IBaseFilter>();
graphBuilder->AddFilter( pfilter, L"LAVSplitter");

That`s it. Thanks.
And I un-registered the filters before tests.
Next I will try to add Media Foundation based playback.

anas

24th March 2018, 03:52

Well I managed to get it working, at least on my local machine:
I looks like that

That`s it. Thanks.
And I un-registered the filters before tests.
Next I will try to add Media Foundation based playback.

man, can you put dll file here?
i used DSS2mod before, but i need DSS load lav without reg because DSS2mod has some issues and admin system permissions don't allow me reg or install lav
thanks ..