LAV Filters - DirectShow Media Splitter and Decoders

[el Filou]

I think maybe you'd find better help asking in a PotPlayer forum, because personally I don't have any problems with PGS subs using LAV and madVR both in MPC-HC and MediaPortal, and that 'Built-in HDMV playlist source' you see in the filter drop down menu is PotPlayer's own.

[varekai]

OK, MPC-HC is no problem. PGS and srt works.
Strange thing is their not working in PotPlayer after adding LAV Filters...

[el Filou]

As I said, MPC-HC built-in Blu-ray playback uses a bundled version of LAV's own splitter to demux streams and manage the subtitles:
https://s9.postimg.org/ni73u0obj/MPC-_HC_Blu-ray_subs_LAV.jpg

I don't know what software PotPlayer's own 'Built-in HDMV playlist source' is based on, but maybe it's not "collaborating" with LAV and/or madVR in the same way as LAV's own source filter does. You need to ask PotPlayer's developer.

Edit: is there an option in PotPlayer to force it to use an external filter, like this one in MPC: https://s9.postimg.org/bt346i027/image.png ?
If yes then try adding LAV splitter source and LAV splitter.

[sneaker_ger]

Yes, in PotPlayer you select LAV Splitter (Source) here:
https://wiki.mikejung.biz/images/b/b6/Pot_player_how_to_set_ffmpeg_as_source_splitter_filter.jpg

But I don't know if it works for BD if you select MPEG2 TS or if that is extra.

Could be that the PotPlayer internal splitter has some custom connection to the PotPlayer video decoder that passes the subtitle. LAV Video does not do that, in the LAV "ecosystem" the splitter is supposed to pass the subtitles to the subtitle renderer (e.g. AssFilterMod or XySubFilter) and that one passes to the video renderer (e.g. madvr). (Except maybe DVD buttons or something...)
Best to ask in the PotPlayer forum.

[varekai]

@el Filou

Tried again and again but no subtitles... :\
https://s17.postimg.org/7wto138rj/LAV.png

The Fall is a lovely movie! :D

Regards

[varekai]

@sneaker_ger

Thanks for your input.
PotPlayer forum is not very active, I'll make a post there.

[PCU]

how to deblock bink video with lav filters?

[sneaker_ger]

LAV Video doesn't have any post-processing filters like that. Try madvr artifact removal features.

[el Filou]

The Fall is a lovely movie! :DIndeed! :) Its Digital Intermediates were done in 4K too, and I think it's one of the rare movies I would buy a second time on UHD BD.

Tried again and again but no subtitles... :\
https://s17.postimg.org/7wto138rj/LAV.pngSorry I can't see what else could interfere there and I never use PotPlayer so don't know about its potential quirks. :(
Last idea: if you click on LAV Splitter in that menu, can you check if you have a "[Out] Subtitle" entry like this: https://s9.postimg.org/cvw4qxb7j/image.png and what next filter it is connecting to?
I'm using MPC-HC's internal subtitle renderer so I guess that's what 'TextPassThru' is on my screenshot, but on yours it should probably connect to madVR directly? Or does PotPlayer have an internal sub renderer?

[arrgh]

I could reproduce the problem on a disc with an Intel GPU, unfortunately it appears to be a long-standing Intel issue that can result in the GPU reporting a "busy" state infinitely, causing decoding to just die. So for the time being, i've turned off hardware accelerated decoding again.

I'm having the Problem described here:
https://forum.doom9.org/showthread.php?p=1827545#post1827545
I tried the nightly .88. Unfortunately now I have a picture in the "black-screen-movies" of before but they are now jerky and also those who worked with .83 are jerky too…
Went back to .83…..
Maybe there is a way to override the “busy” flag of the hardware?....
(samples of working/not working movies are still available for download via PM link I have sent you)

[nevcairiel]

If you don't have enough CPU power to decode MVC in software, you're probably out of luck for the time being. I don't currently have the free time to spend multiple days of research on an obscure Intel hardware decoding bug. Bugs that entirely break playback and even lockup the entire player are not acceptable under any circumstances.

The behavior has now returned to how it always was since MVC support was introduced, and how it was in in the 0.70.2 release, so its not exactly a "change".

[Klaus1189]

What is the difference between LAV Splitter Source and LAV Splitter?

[LigH]

I believe the Source filters (in general) read the media files and analyze their container formats, and the actual splitter separates their content streams... so the splitter could work with a different source filter as long as it signals all required information about the container.

No guarantee for a correct and complete answer.

[Klaus1189]

So I simply use both as external filters? The filters are not "arguing", because they do different things?

[sneaker_ger]

LAV Splitter Source opens the file (via OS/file system API, maybe via streaming protocol) itself, LAV Splitter gets the file from another DirectShow filter. They don't compete against each other.

[Undead Sega]

Hi guys, long time me coming back to the forums!

I've recently switched to LAV Filters since it was recommended as I've been using ffdshow for years, however it lacked HEVC/H265 decoding. Also it was great to configure which software or applications you can use it for decoding, in my case Premiere Pro and After Effects.

Now these days a lot of things is trending towards the newer codec however LAV Filters doesn't seem to decode the video in the aforementioned softwares and more so it doesn't have the configuration feature on where you would like the decoding to take place.

Is there any possibility to have such a feature on the filters? More importantly, isn't there any way to direct the filters to decode HEVC/H265 video in Premiere and After Effects??

[poisondeathray]

Hi guys, long time me coming back to the forums!

I've recently switched to LAV Filters since it was recommended as I've been using ffdshow for years, however it lacked HEVC/H265 decoding. Also it was great to configure which software or applications you can use it for decoding, in my case Premiere Pro and After Effects.

Now these days a lot of things is trending towards the newer codec however LAV Filters doesn't seem to decode the video in the aforementioned softwares and more so it doesn't have the configuration feature on where you would like the decoding to take place.

Is there any possibility to have such a feature on the filters? More importantly, isn't there any way to direct the filters to decode HEVC/H265 video in Premiere and After Effects??

Is this an old version ? PP/AE can decode HEVC natively now

[nevcairiel]

LAV is just a plain DirectShow filter, it doesn't have any specific support for any specific applications. Any app that can use DirectShow filters can also use LAV Video for decoding. I have no idea what Premiere or After Effects use for decoding, but I would honestly be a bit surprised if they actually used DirectShow.

[varekai]

@el Filou

I've been going through all settings that have references to "Built-in" inside PotPlayer.
I changed/removed all that I could find.
Enabling or disabling "Use Built-in DXVA Video Decoder" makes no difference.
I just can't get subtitles to show! :\

As you can see here I don't have the "Pin Info" tab:
https://s17.postimg.org/e1w7bgo9b/LAV-_Splitter-_Source-1.png
https://s17.postimg.org/upnpe13m7/LAV-_Splitter-_Source-2.png

[mclingo]

Warning - Dont click on those images if you are viewing this web site form work.. NSFW images.

[varekai]

Warning - Dont click on those images if you are viewing this web site form work.. NSFW images.
What!!?

[LigH]

I wonder too; I see the posted images only, just screenshots of the user interface. But maybe for some they load wrapped in ad-bloated websites with naughty content?

[mclingo]

was covered in adverts of scantilly clad women, not suitable viewing at work

Gone now though, odd.

[mclingo]

now back, but they've changed, not so NSFW any more but not ideal.

https://www.dropbox.com/s/ifos6uw7m7ivz7e/woman.png?dl=0

[sneaker_ger]

Oh, I just noticed I posted something very wrong:
Could be that the PotPlayer internal splitter has some custom connection to the PotPlayer video decoder that passes the subtitle. LAV Video does not do that, in the LAV "ecosystem" the splitter is supposed to pass the subtitles to the video renderer (e.g. madvr) directly.
LAV Splitter doesn't pass the subtitles directly to madvr. It passes it to a subtitle renderer like e.g. AssFilterMod or XySubFilter and that subtitle renderer passes the video to madvr.

Sorry for the confusion.

[LigH]

So...

@mclingo: For you, the request to "display the image" has been redirected to "display the image inside an advertizing website". Seems this does not happen to everyone. You may want to try to install browser add-ons which block known advertizing content and redirections (e.g. "uBlock Origin") and possibly even unwanted JavaScript (like "NoScript", but that can get a bit complex to handle).

@ varekai: There are also completely ad-free image hosters, e.g. https://frupic.frubar.net

[nevcairiel]

In any case discussions about image hosters are entirely off-topic here.

[varekai]

@ mclingo
Ahh... good catch, 'cause I never see the adverts.
Probably because I use NoScript and Adblock Plus.
You should harden your web browser with these two, their free, regullary updated and very good.

@ LigH
Thanks for the tips, will use that service next time.

@ sneaker_ger
Thanks for the info, I'll dig deeper into the subtitle issue I'm having.

[el Filou]

As you can see here I don't have the "Pin Info" tab: https://s17.postimg.org/upnpe13m7/LAV-_Splitter-_Source-2.pngTry checking the 'Enable System Tray Icon' option, then an icon for LAV Splitter should appear in the taskbar during playback. Click that icon and see if the 'Pin Info' tab appears then.

[nevcairiel]

"Pin Info" is something the player adds (ie. its something MPC-HC/BE do, other players may not have it).

[Undead Sega]

Is this an old version ? PP/AE can decode HEVC natively now

It is, I am using CS6, the version(s) before they went Subscription and Cloud based :(

LAV is just a plain DirectShow filter, it doesn't have any specific support for any specific applications. Any app that can use DirectShow filters can also use LAV Video for decoding. I have no idea what Premiere or After Effects use for decoding, but I would honestly be a bit surprised if they actually used DirectShow.

So you saying there is absolutely no way for it to be used in other software as a decoder? it seems to do very well with Windows Media Player, being able to play non-standard files with subs with a restrictive player is pretty awesome! :)

[nevcairiel]

So you saying there is absolutely no way for it to be used in other software as a decoder? it seems to do very well with Windows Media Player, being able to play non-standard files with subs with a restrictive player is pretty awesome! :)

Its a DirectShow filter, it can be used in any software which uses DirectShow for video decoding - which WMP is one of. Software which doesn't use DirectShow also cannot use a DirectShow filter. See how that works? :D

[varekai]

Hahaha... after all testing various settings and searching for a solution it all comes down to this...

• Display Subtitles on Overlay/VMR/EVR Surface

F*** me... :D

https://frupic.frubar.net/shots/36370.png
https://frupic.frubar.net/shots/36371.png
https://frupic.frubar.net/shots/36372.png
https://frupic.frubar.net/shots/36373.png

Subtitles are now showing perfectly in PotPlayer!! LAV Filters working! All is good! Perseverance furthers... :D

Edit:
I'm lost... now what to do...? :/

Here is PotPlayer fullscreen where LAV and showing subs work:
https://frupic.frubar.net/shots/36381.png
The subs look really bad.

Here is PotPlayer fullscreen without LAV:
https://frupic.frubar.net/shots/36382.png
The subs look great.

[Bozotheclown]

Question:

The Vulkan API can be adopted for video decoding like D3D11 or OpenGL?

[nevcairiel]

Question:

The Vulkan API can be adopted for video decoding like D3D11 or OpenGL?

Vulkan has no benefits for video decoding. Neither does OpenGL.

[Klaus1189]

I beg to add WEBVTT subtitles support in LAV Filters. More and more YT videos have subtitles and it would be nice to play the videofile with subtitles of this kind. If you are interested and need a sample, let me know.

[mkver]

Are you sure that it is LAV Filters (and not your subtitle renderer or something else) that needs to be updated for this? Because if I look at the input formats that LAV Splitter handles I see webvtt among them.

[sneaker_ger]

In what form do you have them, anyways? Just a raw file on the HDD, trying via http or muxed in a container?

[nevcairiel]

There is still no subtitle renderer which even remotely supports any WebVTT features, so any such endavour would be rather fruitless.
I could add it, but then nothing would show it. Yay? Guess its not my problem anymore then =p

[Klaus1189]

What subtitle renderer is actively developed nowadays? Asking their Devs doesn‘t hurt.

[arrgh]

I'm having the Problem described here:
https://forum.doom9.org/showthread.php?p=1827545#post1827545
I tried the nightly .88. Unfortunately now I have a picture in the "black-screen-movies" of before but they are now jerky and also those who worked with .83 are jerky too…
Went back to .83…..
Maybe there is a way to override the “busy” flag of the hardware?....
(samples of working/not working movies are still available for download via PM link I have sent you)

If you don't have enough CPU power to decode MVC...

I hope/think you are wrong...
I flashed back an image from 8/2017 of a Win10x64 setup on this machine. Upgraded to Intel-driver .4901 (new style) and downgraded later to .4849 (old style).
LAV .88 played with both drivers with "LAV Hardware decoding" "None" and "D3D11" both types of MVC-files.
(the shut down of the player MPC-BE was with the difficult files a little bit tricky but in the end possible.)
LAV .83 played the good files without Problems (with both drivers), the bad ones gave a black screen, like in Win8.1x64.

In the Win8.1x64 setup I'm using .4860, which is in between the 4849 and the 4901, still LAV .88 does not work.

That tells me that my hardware is not "too weak", but the software has an issue... driver mainly but to some extend also the decoder and OS are involved.
I would hate to be forced to move back to Win10 because this system is constantly doing things behind my back I don't want...
On top comes that Madshi is advertising Win8.1 as the prefered media system. It would be a pity if modern CPU/Graphics like Kaby Lake would not be fully suported in Win8.1.

[nevcairiel]

The hardware decoding option has no impact on MVC decoding, it was always used when appropriate hardware was present, so your testing does not tell you what you think it tells you.
Anyhow as mentioned before, I do not have enough spare time right now to waste on trying to figure out whats wrong with weird Intel GPUs. So I will not work on this further. It functions now exactly like it did for all LAV releases before.

PS:
Intel/Microsoft does in fact only officially support Kaby Lake on Windows 10.

[arrgh]

The hardware decoding option has no impact on MVC decoding, it was always used when appropriate hardware was present, so your testing does not tell you what you think it tells you.
...it still stands : LAV .88 decodes both file-types ok, so the Hardware is not the problem...

Anyhow as mentioned before, I do not have enough spare time right now to waste on trying to figure out whats wrong with weird Intel GPUs. So I will not work on this further. It functions now exactly like it did for all LAV releases before.
I know, also from these posts... I will live with it...
https://forum.doom9.org/showthread.php?p=1831126#post1831126
https://forum.doom9.org/showthread.php?p=1831168#post1831168


PS:
Intel/Microsoft does in fact only officially support Kaby Lake on Windows 10.
I know... doesn't make it OK....

[nevcairiel]

...it still stands : LAV .88 decodes both file-types ok, so the Hardware is not the problem..

So everything is fine then. LAV decodes the files properly, and thats that.

Software decoding is independent of the OS you use, or the drivers you have installed, so if you're seeing issues on one OS and not on another, its far more likely that this is caused by the rendering - which is outside of LAVs control.
As a test, you should run it in SBS mode instead of frame-packed 3D, this avoids a lot of weirdness with 3D in the drivers, and could point you into the direction of whats going on.

PS:
You should really not speculate about peoples motivations. It'll only result in people getting pissed off and ignoring you in the future. Just sayin'
I didn't even like 3D before I ever implemented 3D MVC decoding, and yet its still something that exists. Weird, huh?

[runner]

the parsing of the ISO BDUHD with the LAV splitter unfortunately still does not work, will it be usable with the stable version?

[LigH]

How exactly does it "not work", can you provide useful details to tighten the scope?

[nevcairiel]

From what I'm told from other users, the latest nightlies should be working fine for UHD BD.

[huhn]

What subtitle renderer is actively developed nowadays? Asking their Devs doesn‘t hurt.

libass is in development but it is for ASS subs...
https://github.com/libass/libass

or assfiltermod which uses libass for ass
https://forum.doom9.org/showthread.php?t=173573

[jmone]

From what I'm told from other users, the latest nightlies should be working fine for UHD BD.

Yes works great. The only thing not working (at least with JRiver) is that there is no title selection.

[Klaus1189]

libass is in development but it is for ASS subs...
https://github.com/libass/libass

or assfiltermod which uses libass for ass
https://forum.doom9.org/showthread.php?t=173573

Does it make sense to ask the devs of this project for WEBVTT?