LAV Filters - DirectShow Media Splitter and Decoders

[Dodgexander]

Originally Posted by clsid

@Dodgexander
You need to access the filter settings from within your player or through the tray icons of LAV Filters. If you access settings from the Start menu shortcuts, then you won't get the active instances.

That does not work, they still are innactive from within NPVR.

There are no system tray icons. How can i enable them?

[nevcairiel]

Many applications can't actually show the active filters property page, but create a new instance of the filter to show it.

The tray icon is only available in the Git builds, and will be in the next release.

[nevcairiel]

Originally Posted by clsid

#XXX: Volume normalization option. Of course disabled by default. It could perform some kind of smart check to use it only for video. For example check for presence of a video mediatype in the graph. Then audio file playback will be untouched. Volume normalization is pretty useful in quiet environments (bedroom TV) or when using weak hardware (cheap headphones, portable device).

I believe i already mentioned before that i will not offer such functionality.

Originally Posted by clsid

#32: Automatic loading of post-processing filters into the filter graph. This could initially be limited to the combo: VistaOrAbove + wmplayer.exe -> Let splitter load DirectVobSub.

Is this really needed?
With some configuration, i can easily make DirectVobSub load in wmplayer.

[DragonQ]

Originally Posted by nevcairiel

Many applications can't actually show the active filters property page, but create a new instance of the filter to show it.

The tray icon is only available in the Git builds, and will be in the next release.

Will the system tray icons always appear when LAV is used? What I'm getting at is: will we be able to actually see a proper status page when LAV is being used in MediaPortal using the system tray icons (right now, as you say, it just creates a new instance of the config window)?

[Dodgexander]

Originally Posted by nevcairiel

Many applications can't actually show the active filters property page, but create a new instance of the filter to show it.

The tray icon is only available in the Git builds, and will be in the next release.

Okay thanks Nev. I will wait eagerly for your next release
until then I try and tell myself I am receiving signal correctly xD

[nevcairiel]

Originally Posted by DragonQ

Will the system tray icons always appear when LAV is used? What I'm getting at is: will we be able to actually see a proper status page when LAV is being used in MediaPortal using the system tray icons (right now, as you say, it just creates a new instance of the config window)?

The icons are disabled by default, but when you enable them, they'll always show up when LAV is loaded, and clicking them opens the property sheet of the active filter, so yes, you get the real thing.

[clsid]

Originally Posted by nevcairiel

Is this really needed?
With some configuration, i can easily make DirectVobSub load in wmplayer.

Afaik, it is certainly needed for Vista. On Win7/8 there are some other tricks to make it work. For example setting the preferred decoder to "Use merit" with Win7DSFilterTweaker. Unregistering "RDP Redirection Filter" may also work, as that was the cause of it not loading in MPC-HC.

[sardonis]

Hello all,

I have been trying to get lav filters to work properly but I have 1 major problem. When playing mp4 files muxed with mp4box I always have around 140ms audio delay. I always have to shift 140ms positive (+) in MPC-HC to get synced audio.

This doesn't happen to any other format (mkv, avi with mp2, mp3 or AC3 audio). The only format that causes a problem for me is mp4 files with AAC audio.


They play fine in VLC but I'm not planning to use this as my default player duh

As you can see I even have tried good old AC3Filter but no avail. Mp4 files keep playing with around 140ms delay..

I have set all my settings like this:

EDIT: I've noticed that I didn't have the latest lav build so I've updated to 0.54.1 but no change in my problem.



Btw, the mp4 files are muxed with the delay originated in my dvb-c recording ts files so I mux mp4 files with following parameter:

-add "audio.m4a:delay=%delay%"

Would this be a possible cause of my problem? I'm not sure whether MPC-HC does recognize the delay field as well as VLC. I'm not even sure if the mp4 splitter is responsible for this or not...?

[DragonQ]

Have you tried MP4 samples from the internet? If they don't have the problem then it's likely just a muxing issue. Right now I need to add a ~100 ms delay to the audio when muxing my .TS TV recordings to MKV. Not sure why...

[nevcairiel]

Originally Posted by clsid

#190: Fallback to decoding if Bitstreaming is unsupported

I actually tried doing this, but something odd started to happen.

If i let LAV only output the Bitstreaming media type, it'll connect to my SPDIF renderer just fine and bitstream AC3 and DTS.
But as soon as i also offer a PCM type as a secondary media type, the DirectSound renderer selects this one and triggers the decoding fallback. Really somewhat annoying, actually.

My guess is that it just prefers the 6 channel float media type over the "2 channel" bitstream type (DTS/AC3 always look like 2 channel to the renderer when bitstreaming). Maybe i can trick it by giving it a "wrong" type and see if it still prefers it, but even if it works, this "trick" would mean that if you do this in WMP for example, WMP locks in on 2 channels, and everything would have to be downmixed (WMP cannot change channel count on the fly) - but then, its their damn fault for misconfiguring things, right?

Can't people just know wtf they are doing when configuring things?

I did implement fallback to DTS core if DTS-HD fails, though.

Edit:
I tried various other things, but the renderer directly lies to me and claims it accepts a bitstreaming type, and then when i try to send an audio packet, it fails. Oh well, won't be changed then.

[clsid]

Fallback works here in WMP12 with AC3Filter.
In MPC-HC it also works if I disable the internal stream switcher.

[nevcairiel]

Originally Posted by clsid

In MPC-HC it also works if I disable the internal stream switcher.

Maybe that thing is causing the problem, however if its not reliable in most conditions, i rather have it refuse the decoder completely (and possibly using another one) instead of giving you silence.
I'll look at it again at a later time, maybe a solution will reveal itself that works with all combinations. It had its chance, and it failed, so now it moves to the end of the list.

[clsid]

The stream switcher problem might be fixable by the MPC-HC devs.
Problem with fallback to another decoder is that it in most cases will be MS decoder, which gives silence as well (at least in MPC, it does work in WMP)
Oh well, knowing what doesn't work is a step forward as well.

[jmone]

Originally Posted by nevcairiel

I need to establish priorities for the upcoming tasks for LAV again, all i wanted to do on high-priority is about done, so whats next up after 0.55 is still in the air. We'll see.

BD Menu Support

[madshi]

Originally Posted by jmone

BD Menu Support

No, let him implement World Peace first!

[jmone]

World Peace is overrated.... BD Menus are a much higher priority (though may be slightly more complicated!)

[madshi]

You're probably right on all accounts!

[6233638]

People want to use menus!?

One of the biggest advantages of using a HTPC for Blu-ray is that I can just start index.bdmv (which I have pinned to MPC-HC on the taskbar) and the film starts immediately. No trailers/ads/anti-piracy warnings (ironic considering you only see them on legitimately purchased Blu-rays) and no waiting for menu animations to load up etc.

I wish there were an easy way to skip menus like that for DVD, but I haven't found anything yet. The closest I've found is to set AnyDVD to "Remove annoying clips from menus" and "Remove annoying titles shorter than 10 minutes" which has a lot of films either start playing immediately, or at least takes you directly to the menu without all the ads. Some discs do crash like this however, and I need to disable the "Remove annoying titles" option.

[nussman]

Originally Posted by nevcairiel

Maybe that thing is causing the problem, however if its not reliable in most conditions, i rather have it refuse the decoder completely (and possibly using another one) instead of giving you silence.
I'll look at it again at a later time, maybe a solution will reveal itself that works with all combinations. It had its chance, and it failed, so now it moves to the end of the list.

We discuss the same problem here (in german) with dvbviewer sourcefilter: http://www.dvbviewer.tv/forum/topic/...m/page__st__40

With AC3-Filter there is a fallback to decoding when bitstream is not supported by the renderer and that helps a lot.

[oddball]

I have a big problem. I want LAV audio to send 7 and 8 channel as 6 channel (5.1) mapping. I know I can do this in the channel mapping tab. But if I enable it then it sends EVERYTHING (including stereo PCM) as 5.1! I just want it to send 7 or 8 channel stuff like DTS-ES as 5.1 PCM so I can use ReClock with WASAPI. My hardware does not support 7 and 8 channel WASAPI it would seem (I just get a 48000 IEEE float 7 channel error).

Is there a way to force LAV audio to always send 7 and 8 channel sources as 6 channel when detected?