LAV Filters - DirectShow Media Splitter and Decoders

[nevcairiel]

Great, thanks for confirming.

[chros]

A quick question regarding video decoding on nvidia GPU and dxva2n with madvr: is there any advantage using dxva2n over cuvid ? (performance, quality, etc.)

Thanks for your hard work!

[DragonQ]

A quick question regarding video decoding on nvidia GPU and dxva2n with madvr: is there any advantage using dxva2n over cuvid ? (performance, quality, etc.)

Thanks for your hard work!
DXVA2 Native uses less power.

[dansrfe]

Feature request:

Keyboard shortcut to increase/decrease audio delay by specified amount on-the-fly for the current file.

[huhn]

plus minus at mpc hc

[owlsroost]

I think i actually finally figured it out, and fixed the problem.

Try with this version:
http://files.1f0.de/lavf/LAVFilters-0.54-4-gc509fe2.zip

I would also appreciate if anyone could test this version with DXVA2 Native or CB on older Intel GPUs, if anyone has one? Like the 4500MHD? or Atoms?

Here is a sample which broke before this version, but works on SNB/IVB now:
http://files.1f0.de/samples/Madoka-002.mkv

Any feedback would be great, please confirm if its using DXVA2 on this sample, it will fallback to software if your Hardware and/or Driver doesn't support the proper H.264 spec (only on this sample, others with fewer reference frames will still use DXVA2 on those systems).

If you still have issues, a DXVA Checker report might be useful.

Tried the sample on Intel HD graphics (i5-460M 'Arrandale') - always falls back to software (which I suspect is the correct thing to do) and plays OK.

Tony

[nevcairiel]

Ok thanks, looks like the old Intel GPUs do not offer the same functionality as the SNB/IVB GPUs then (which was mistakenly simply ignored before :p)

[wanezhiling]

http://pan.baidu.com/share/link?shareid=138396&uk=3558042035

VP62, lav cant work.

[owlsroost]

Ok thanks, looks like the old Intel GPUs do not offer the same functionality as the SNB/IVB GPUs then (which was mistakenly simply ignored before :p)

Here's the info from DXVA Checker.

Tony

[nevcairiel]

Here's the info from DXVA Checker.


I figured it would only have the Intel-specific ClearVideo H.264 variants, and not the generic ones, thanks.

[filler56789]

According to GSpot, LAV Video doesn't have "MEDIATYPE_DVD_ENCRYPTED_PACK", which apparently is required by MPC-HC for connecting an MPEG-2 decoder to Windows XP's DVD Navigator. Is that intentional? :)

[nevcairiel]

According to GSpot, LAV Video doesn't have "MEDIATYPE_DVD_ENCRYPTED_PACK", which apparently is required by MPC-HC for connecting an MPEG-2 decoder to Windows XP's DVD Navigator. Is that intentional? :)

But it does have it. If it seems missing, then re-register a recent version, in case you just overwrote it without registering. :p

[filler56789]

:stupid:

Thanks :thanks: for the clarification.

[nevcairiel]

http://pan.baidu.com/share/link?shareid=138396&uk=3558042035

VP62, lav cant work.

Looks like this file is interlaced VP6, ffmpeg doesn't implement this.

[nevcairiel]

LAV Filters 0.54.1

LAV Splitter
- Improved seeking in MP4 files created by Windows Live Movie Maker

LAV Video
- Improved H.264 DXVA on recent Intel GPUs (Sandy/Ivy Bridge and newer Atoms)
- Fixed corruption with high number of reference frames ( > 11 )
- Fixed corruption in MBAFF interlaced content
- Fixed an issue that caused DVD menus/subtitles to stop working in DXVA2 Native mode in some situations


Download: Installer (both x86/x64) (http://files.1f0.de/lavf/LAVFilters-0.54.1.exe) -- Zips: 32-bit (http://files.1f0.de/lavf/LAVFilters-0.54.1.zip) & 64-bit (http://files.1f0.de/lavf/LAVFilters-0.54.1-x64.zip)

So, it appears Intel does actually support full spec compliant H.264 DXVA on Sandy Bridge/Ivy Bridge and newer Atoms (just a slightly different part of the spec which is not used by NVIDIA/AMD), my implementation just wasn't 100% spec compliant, but now it is, and decoding on those CPUs/GPUs is now much better.
This change should not affect older Intel GPUs, except that i also added some checks to properly fallback to software decoding if you try to play a file with more than 11 reference frames on an old Intel GPU (which doesn't support this properly).

Anyway, as always please report any issues, especially regressions.

- nev

[06_taro]

nev, lavr has fixed the 8->2 channel mixing crash on x86_32 ( commit (http://git.libav.org/?p=libav.git;a=commit;h=7a9e65aceee678ee2677480579cb3b2208474140) ), and I've confirmed that reverting "avr: disable 8 -> 2 optimized mixing on 32-bit because of a crash" and compiling lavf with latest FFmpeg (merged with your branch) won't result in crash any more, so it should be safe to re-enable those asms.

[nevcairiel]

I know, i was the one that reported the crash to them in the first place. ;)
Will be changed when i next update, probably for the next release, unless i need to do small fixes again.

[06_taro]

I see.

edit: delete for misleading....

[nevcairiel]

I think you misread what i wrote. :p

[06_taro]

Oops. Yes I did.

[wanezhiling]

Looks like this file is interlaced VP6, ffmpeg doesn't implement this.

Ok thanks.
Almost all ffmpeg based players/decoders fail.


http://www.free-codecs.com/VP6_download.htm
Install it and it works now.


Since ffmpeg doesn't implement interlaced VP6, why not just disable it?:) Because I still wanna use lav video for progressive VP6.

[dansrfe]

plus minus at mpc hc

This doesn't work when I try it. Do I have to change something in the key bindings in MPC-HC? Do I have to change anything in LAV Audio?

[pie1394]

The new AMD/ATi graphics driver's quality is really terrible.

Unified Catalyst 12.10 Win7x64 on Radeon HD5450M (HP TouchSmart TM2-2102tx) seems broken with DXVA2 MPEG2 VLD mode. With this driver, dxva2n only works with H.264 VLD...

Unfortunately this is the only CAT 12.x driver works for switchable graphics modes and changing built-in LCD panel's color settings instead of GPU's. All AMD packed CAT 12.x driver sets seem to provide Intel graphics driver 9.x, which is incompatible with the 1st-gen Core i3-380UM. Otherwise I have to roll it back to old CAT 11.12 ...

MS-DTV decoder supports DXVA1 MPEG2 iDCT / MC modes, so it still get partial MPEG2 acceleration with this decoder.

The funny thing is that MPEG2_VLD is listed in Open Video Decoder profiles.


http://i.imgur.com/vjAJs.png (http://imgur.com/vjAJs)

http://i.imgur.com/NNXqQ.png (http://imgur.com/NNXqQ)

[wanezhiling]

Only UVD3.0 cards (HD6xxx and above) have MPEG2_VLD, which is not a secret in doom9, so what you see is common.

[Prinz]

Hi nevcairiel,

do I misunderstand the readme?

If multiple audio tracks match one language, the choice is based on the quality. The primary attribute here
is the number of channels, and after that the codec used. PCM and lossless codecs have a higher priority
then lossy codecs.

http://i47.tinypic.com/2wc1d9v.jpg

Should not the 5.1 track be selected instead of the stereo track in this case?

[nevcairiel]

Should not the 5.1 track be selected instead of the stereo track in this case?

The "[default]" flag overrides quality based decisions, only the language is checked.

[Prinz]

I thought so. Then the error is text in the readme, because the primary attribute is the default flag not the channel count.

[nevcairiel]

The text is correct, the primary attribute for quality is the channel count, it just doesn't mention the default flag in the audio-specific part. :p

[clsid]

DVD playback is b0rked with Overlay Mixer in MPC on Win7 here. Problem seems to be caused by a wrongly guessed stride (720 instead of 768).

If I uncomment the two lines above this one, then playback is OK:
DbgLog((LOG_TRACE, 10, L"-> We did not get a stride request, using width %d for stride", pBIH->biWidth));

(PS, yes I know overlay should not really be used on win7, I was just testing various stuff)

[pirlouy]

(PS, yes I know overlay should not really be used on win7, I was just testing various stuff)
Just for my curiosity, why Overlay should not be used ?
Before madVR 0.11, I used to use Overlay Mixer renderer, and it was working well.

[nevcairiel]

With overlay you're entirely at the mercy of the GPU, which is usually a horrible idea, even EVR does a better job then that. Also, Overlay has some other issues, window movement is sluggish and it forces Aero off. Its the most efficient renderer in regards to performance (if you dont want DXVA), but its also the most simple with basically zero features and zero control about what happens. That it turns Aero off is already annoying enough for me. ;)

From a technical standpoint, its also brain-dead stupid and doesn't implement DirectShow properly, so right now its broken again with LAV and probably needs some custom hacks to work again.

[pirlouy]

Aero forces Vsync and for that I think it sucks; unfortunately, if you disable Aero, there are visual glitches everywhere (+ poor performance), so disable it forever is not feasible. Fortunately Direct3D madVR allows to turn Aero Vsync off for video playback.

But I've heard your others points; thanks for the info. :)

[Mangix]

good thing madVR supports an overlay mode :P

[Anima123]

nevcairiel, I encountered an ogg file which cause trouble using the latest LAVFilters 0.54.1.

I have sent you splitted file with pm. Please take a look at it.

The ogg splitter with mpc-hc handles it very well though.

[Snowknight26]

Any chance you can enable VMNC support, nev?

[war59312]

LAV Video
- The DXVA2 Native decoder can now properly detect hardware support for video resolutions
- Allows 4K DXVA2 decoding on NVIDIA
- New options to control which resolutions are being handled by the hardware decoder (SD, HD and 4K/UHD)

Does that mean if the 4k option is selectable that my graphics card should support 4K DXVA2 decoding ?

Tested with the 4k videos from youtube. And MPC-HC info screen says "Not using DXVA".

Yes the new "UHD (4K)" option is checked in lav filter.

My graphics card is 1 Nvidia GeForce GTX 470.

List of graphics cards supported? Perhaps add to faq on front page?

Update: http://en.wikipedia.org/wiki/Nvidia_PureVideo#Table_of_PureVideo_.28HD.29_GPUs

So looks like my card does NOT do 4k. Darn!

If your card does not support 4k then the option in lav filter should be grayed out as to not make the user think their card supports 4k when it really does not.

[wanezhiling]

If your card does not support 4k then the option in lav filter should be grayed out as to not make the user think their card supports 4k when it really does not.
Good idea, duuno whether its hard for nev.

[nevcairiel]

good thing madVR supports an overlay mode :P

madVRs overlay mode has nothing to do with the "Overlay Mixer", completely different things.


If your card does not support 4k then the option in lav filter should be grayed out as to not make the user think their card supports 4k when it really does not.

Thats not possible. It will always show all options, the config does not have access to the decoder itself to check for such things (and some decoders like QuickSync or CUVID don't tell me such infos, they just fail at decoding 4K and trigger the software fallback). This will not change, it would be way too much effort for a visual fix.
Resolution support may also depend on which codec is used, so there is more combinations possible then the UI can show.

[bejita7]

Can you give approximate ETA for ordered chapters/editions support in LAV Splitter?

[malmsteen81]

i have a question, if i use dxva (native o CB) with ati card without yadif enabled, does ati deinterlace dvd or 1080i files?

thanks

[sneaker_ger]

i have a question, if i use dxva (native o CB) with ati card without yadif enabled, does ati deinterlace dvd or 1080i files?

Depends on the renderer, but on e.g. EVR or madVR with standard settings: yes, the graphics card will do the deinterlacing. This is done by the renderer and not by LAV, though.

[ajp_anton]

Had corrupted Intel-DXVA decoding a few days ago. Forgot which clip it was.
Found it today. Installed 54.1, no corruption. Perfect, thanks =).

[bugmen0t]

Hallo nev, is it possible that LAV Audio sometimes overflows when using mixing with clipping protection (very loud btw) and integer output formats (needed for some of my tools)? Normalization is fine but much quieter of course. BTW is dithering used when converting floats to integers? And do you use the mean or rms for normalization?

[manma]

Is there any reason to use DXVA2 over quicksync? Does it offer any performance improvements when used along with madvr?

[Mangix]

madVRs overlay mode has nothing to do with the "Overlay Mixer", completely different things.

It's similar in the sense that the presentation isn't copied back to main memory(hence no screenshots) which would mean less potential for glitching/stuttering. And aero can continue to be on. I guess less stutter is the reason to use Overlay so madVR may help there. Not too sure.

[Anleck]

Hello, a little advice needed please.
I can not get LAV splitter to work with dvd's. The problem started after some software upgrades (was perfect before).
LAV video is working with dvd, including Hardware acceleration, and LAV splitter is being used for just about everything except dvd's.

I have reinstalled drivers and LAV back to the last known working combination without success. I have tried the latest release of mpc-be and mpc-hc with 54.1 LAV filters. I also tried manually cleaning out the registry before reinstalling, but I keep coming back to the same point (everything fine except dvd's).

I am running Windows8dp and wish to avoid reinstalling (I had a disc image which conveniently disappeared)

If anyone could give me some registry values to check I would be grateful.

PS- I had individual vob's playing using LAVsplitter but could not get the disc as a whole to play fine.

[war59312]

If your card does not support 4k then the option in lav filter should be grayed out as to not make the user think their card supports 4k when it really does not.

Thats not possible. It will always show all options, the config does not have access to the decoder itself to check for such things (and some decoders like QuickSync or CUVID don't tell me such infos, they just fail at decoding 4K and trigger the software fallback). This will not change, it would be way too much effort for a visual fix.
Resolution support may also depend on which codec is used, so there is more combinations possible then the UI can show.ok no big deal. Thanks for the details.

[dansrfe]

When I'm playing a flac file it stops 2/3 of the through and MPC-HC says playing but nothing happens even when I play/pause the player.

[ryrynz]

When I'm playing a flac file it stops 2/3 of the through

No problems here (using 0.54.1)

[Weirdo]

I'm getting regular player crashes (DVBViewer + Media Center 18 w.custom video mode) with 0.54.1 after a couple of minutes. Not sure if it's LAV, reverted to 0.53.2 and it works fine for now. Win 8 x64, AMD 5670.