LAV Filters - DirectShow Media Splitter and Decoders

[Nullack]

Yes it is, including 4K. Smooth as silk with little CPU utilisation. I did notice a strange value for the DXVA2 variable - I dont usually see that its more descriptive. As seen in the screenshot below:

http://i.imgur.com/nT2vCe0.jpg

[huhn]

Originally Posted by GTPVHD

Does the latest Nvidia 361.43 WHQL driver released today fix anything with VP9 DXVA2 decoding on GM206 GPUs?

yes and it isn't hybrid.

[Nullack]

For Hendrik:

* I see the Microsoft DXVA2 Spec Paper for VP9 is bundled into VP8 as well. Is there any future intent to add VP8 hardware assist in LAV filters since the two versions seem kinda intertwined? Currently VP8 is done in software.

* I also see on Microsofts DXVA2 Spec Paper website, MPEG 4 part two specification documents. Does LAV Filters intend to support stuff like xvid gpu acceleration?

Thanks

[nevcairiel]

VP8 might happen when hardware starts supporting this, no plans for mpeg4pt2, its too much of a butchered and misused format that would only result in trouble.

[v0lt]

The sample has artifacts when HEVC DXVA (Nvidia GTX 950).

[pacuro]

Hi guys,
I do not know what I am doing wrong or maybe what still have to do.
Each time I enable VP9 decoding in LAV Video Decoder Properties tab, "tick" disappears when playing VP9 sample and software encoding is engaged.
Doing this with latest nightly MPC-HC and LAV (both portable) and can not obtain VP9 DXVA playback. Of course 361.43 drivers are installed.
AVC and HEVC DXVA still works though.

[huhn]

you are most likely using the internal lavfilter version from MPC-HC not the new installed version for playback.

there are multiply ways to change this. one is to disable all internal filter in MPC-HC.

[pacuro]

Thanks huhn. Chose external filter and it works now!
Could you please tell me what is the difference since both (installed in Windows and portable in MPC-HC filters catalog) LAV versions are the same (0.67.0.29). I prefer portable "things" over those with instalators. Portables work fine with AVC and HEVC...

Edit:
Quite interesting as I removed LAV from Windows and choose in external codecs portable one stored in MPC-HC directory. Works as well
Is there anything what should be fixed by developers in MPC-HC or LAV ?

[hubblec4]

hi nevcairiel

I have some questions about nested chapters.
I will use ordered chapters too, cause its necessary for chapter segment linking
(which will work perfect, thank you so much).

It seems to me that LAV Splitter use the "main chapter" start and end time and the segment uid only.

1. Which parameter of a nested chapter is used in LAV Splitter?

The duration of an ordered-nested-chapter seems not to be used. Only the start time marks the chapter.
Also the segment uid will be ignored and an existing chapter-segment-link will not work.

I have uploaded a sample folder with test files.
There are 3 episodes(separate folder) and a menu folder(all episodes together with two menu-"start".mkv's)
Epsiode 1 has an opening part(which will used for the other two episodes with chapter-segment-linking),
2 chapter parts and a credits part.
The other two episodes has 2 chapter parts and credits part only.
(Note: Only in the menu folder plays the episode 2 and 3 correct with the opening part from episode 1.)

The "without nested chapter menu.mkv" play all chapter-segment-links well and all durations correct.
The nested menu.mkv shows the opening part from episode 1 only one times.
The first nested chapter from episode 2 and 3 has a chapter-segement-link to episode 1 opening part
(00:00:00.000-00:00:02.000).

LAV Splitter menu -> chapters:
You see the episode 2/3 "main chapter", the first and the second nested chapter have the same time stamps.

2. Is this a bug or a not implemented feature?

Nested chapters are not really good documented and I think you has programmed this so good you knew.

3. Or could you find detailed specs?


I hope you have time for this topic.

hubble

[huhn]

Originally Posted by pacuro

Thanks huhn. Chose external filter and it works now!
Could you please tell me what is the difference since both (installed in Windows and portable in MPC-HC filters catalog) LAV versions are the same (0.67.0.29). I prefer portable "things" over those with instalators. Portables work fine with AVC and HEVC...

Edit:
Quite interesting as I removed LAV from Windows and choose in external codecs portable one stored in MPC-HC directory. Works as well
Is there anything what should be fixed by developers in MPC-HC or LAV ?

mpc-hc will update the lavfilter version sometime in the feature that will fix it. they are simply "outdated".

overriding may work too.

[Nullack]

Originally Posted by v0lt

The sample has artifacts when HEVC DXVA (Nvidia GTX 950).

Yes I too get artifacts on my 960 under copyback DXVA2. In software decoding there is no artifacts.

[foxyshadis]

Originally Posted by pacuro

Is there anything what should be fixed by developers in MPC-HC or LAV ?

MPC-HC only uses official releases, so it'll be fixed shortly after nev releases a new stable version.

[kasper93]

Originally Posted by huhn

mpc-hc will update the lavfilter version sometime in the feature that will fix it. they are simply "outdated".

overriding may work too.

We are not outdated atm.

[NikosD]

You and nevcairiel should be working closer and update your software synchronised.

[ryrynz]

Originally Posted by NikosD

You and nevcairiel should be working closer and update your software synchronised.

LAV was updated 10 days ago, MPC-HC updated LAV 10 days ago (0.67.30) The MPC-HC devs will follow LAV and get email notifications when new changes
are made so you really can't really get any closer than that unless Nevcairiel updated MPC-HC himself. He could do this if he felt like it (he has rights to do so I believe)
but I doubt this will ever happen given he's not really associated with MPC-HC's development.

If you want bleeding edge then you use the external filters, I can't see anything changing in this regard.

[huhn]

Originally Posted by kasper93

We are not outdated arm.

had no better word for it so i put it in "". doesn't change that his version wasn't the nightly.

[mark0077]

Guys I'm using LAV Splitter / Audio / Video with mpc-hc latest beta. Just reformatted my PC and I'm not sure if my issue was there before or not but its there now. When I play an mkv file I have here which has a default first audio track of PCM s 24 LE, the LAV Audio Decoder isn't showing up in the filters list. When I switch tracks to the 5.1 track, LAV Audio Decoder kicks in. The strange thing is, when I switch back to the 2 channel track, LAV Audio Decoder is still in use.

Whats causing this, is it MPC or LAV Splitter or something else? Just that I use LAV Audio delay functionality as my TV has quite a bad video delay, so its noticeable that LAV Audio isn't in use as the audio is all out of sync.

[clsid]

PCM is uncompressed audio and doesn't require any decoding. The reason why LAV gets used after track switching is because (by default) the decoder isn't removed from the filter graph during switching.

The audio switcher in MPC-HC also has a delay option that you could use instead.

[mark0077]

Ah OK thanks. Its just not ideal as things like upmixing / audio delay all need to be replicated in the likes of mpc-hc then. Is there any other way clsid to force LAV Audio to be used so that I don't have to get those other LAV features working elsewhere for PCM?

[clsid]

Delay works independently of mixing. And while LAV can increase the number of channels, it doesn't actually upmix, it just adds silent channels.

If that PCM track is stereo and you want 5.1, then simply set Windows to 5.1 and your sound driver will do the mixing.