LAV Filters - DirectShow Media Splitter and Decoders

[rahzel]

thanks nev.

lav video works great on my desktop; gonna try it on my htpc later. I can hopefully ditch divx h264.

[lauhangwoo]

When I installed LAV Filters via installer, I can't complete Windows Experience Index testing anymore.
It fails at Windows Media Decoding optimization or whatever called in english.
This doesn't happen with zip version of LAV Filters x86/x64.

LAV Filters 0.32, Windows7 x64

[pirlouy]

Originally Posted by madshi

But truth be told, I consider the MS decoder to be superior to both the ffmpeg/libav and Intel VC-1 decoders, anyway. Consequently I've disabled the internal VC-1 decoder(s) in madVR by default. Maybe it would be worth a thought disabling the VC-1 decoder by default in LAV Video, too? I don't really see why anybody would want to use the ffmpeg/libav VC-1 decoder. It's slower than the MS VC-1 decoder, without having any advantages that I'm aware of. But maybe I'm missing something?

Yes !
With MS decoder, I have some problems: even if it needs less CPU, the video in not always synchronized with audio (and subtitles), there is a delay after some time, or after seeking; and I don't have this problem with ffmpeg (madVR, ffdshow or LAV).
Like I never have problem with ffmpeg, I stay with it.
And it seems I don't have any interlaced videos (I don't have DVD).

[mindbomb]

Originally Posted by Budtz

to do this: Do i disable all decoders in ffdshow and then enable "Raw video"?

you can do this, but there already is an "ffdshow raw video filter" which is set up like this for convenience.

Also, speaking of that, how good is ffdshow at detecting when to use deinterlacing?


Also, what is wrong with the intel vc-1 decoder? I understand the problems with ffmpeg's, but i would think intel's would be fine.

Originally Posted by rahzel

I can hopefully ditch divx h264.

Heh, I was using divx h264 on one of my computers too, though now I am using lav video. It hasn't been updated for such a long time, I wonder if ffmpeg has more or less caught up to it in terms of performance.

[pirlouy]

Originally Posted by 6233638

UPDATE: Nvidia Inspector's "Multi Display Power Saver" tool lets me force the GPU to stay in the P8 (Video) mode rather than the P0 (Full 3D) power state. This drops power consumption to 103W with MadVR & LAV CUVID compared to 110W with CPU decoding, or 100W with EVR-CP & DXVA.

This is a less-than-ideal situation though, and it would be better if CUVID only put the GPU into the P8 power state rather than P0.

Thanks for your tests; I'm sure it can help people, and maybe Nevcairiel will find a solution to this problem.

[6233638]

Originally Posted by pirlouy

Thanks for your tests; I'm sure it can help people, and maybe Nevcairiel will find a solution to this problem.

As it's more CUVID related than LAV Filters (though it was the new LAV Video Decoder that got me started) I have moved discussion over to that topic: http://forum.doom9.org/showthread.ph...56#post1520556

In short: I now have even lower power consumption than DXVA when playing back SD video using this tool.

There are three power consumption modes for my GPU:

P12, low power for 2D
P8, medium power for Video
P0, full power for 3D

DXVA automatically kicks the GPU into P8 power consumption, so EVR-CP/DXVA uses 100W.

With this tool, MadVR/CUVID can run in the P12 state with SD videos, dropping consumption to 92W. (and P8 with HD, at 103W)

So I have effectively halved my power consumption when playing back SD video from 180W this morning to 92W now!

[rahzel]

Originally Posted by mindbomb

Heh, I was using divx h264 on one of my computers too, though now I am using lav video. It hasn't been updated for such a long time, I wonder if ffmpeg has more or less caught up to it in terms of performance.

<--djskribbles from 'AHD'.

[bruce73]

Sorry for the noob question, but I'm new to LAV and have a quick question about audio. I can't get DTS-HD MA bitstreamed with the LAV decoder with Daum. I have to use it's built-in decoder. Is there a setting I need to enable or disable?

Win 7/64
GT-430
Daum PotPlayer 1.5.29332 (x86)
LAV 0.32

[STaRGaZeR]

Originally Posted by pirlouy

CUDA is like DXVA: untrustworthy.

Everything GPU related = problems. It's a huge mess, with only one culprit: drivers. Drivers suck, all companies the same.

[nand chan]

Originally Posted by STaRGaZeR

Everything GPU related = problems. It's a huge mess, with only one culprit: drivers. Drivers suck, all companies the same.

I can confirm this, drivers suck. Both manufacturer's GPU hardware has been easily capable of supporting 10-bit output now but neither company has actually written drivers worth a damn yet so we still can't use them.

@nevcairiel: Does this build of LAV Video include the swscale levels bug fix?

[jmone]

Anyone got a link to a build of LAVSplitter with the EVO fix in it I could test?
Thanks
Nathan

[betaking]

Originally Posted by jmone

Anyone got a link to a build of LAVSplitter with the EVO fix in it I could test?
Thanks
Nathan

http://hotfile.com/dl/127317313/dd3a..._(Svn).7z.html

[cengizhan]

I tried to use new version with dvbdream. video and audio is out of sync.

[roytam1]

Originally Posted by nevcairiel

I actually benchmarked this now:
Using a H264 4:4:4 10bit 1920x1080 movie, on a Core i7 2600K - in a debug build, release builds will be faster.

These times are *per frame*

Y410 (native)       7.5ms
AYUV                9.8ms
RGB32              20.8ms
YUY2               19.8ms
YV12               20.5ms
NV12               30.4ms

Granted, i just spent some time optimizing the AYUV/Y410 path before doing the measurements.
However, i do not see the higher processing requirements for AYUV.

These numbers show some interesting things, though. For example, it would be impossible to play this movie smoothly if it was 60fps, unless you renderer supports native 4:4:4 input. I am using a bicubic scaler for down-sampling the chroma, i'm sure the numbers for YUY2/YV12/NV12 would be alot lower if i switched to bilinear or even point scaling.

Also, swscale is not multi-threaded right now, but it could be in the future, so we'll see about that.
PS:
Why is there no planar 4:4:4 pixel format? That would be far more efficient then AYUV...

Edit:
Updated Y410 numbers after optimizing the path as well

It had in the past, YV24 (or I444).
but according http://forum.doom9.org/showthread.php?t=113362 , it is not in spec anymore.
AviSynth and VirtualDub will output raw YUV444p video in AVI with FourCC YV24.

for packed YUV 4:4:4, there is an alternative, IYU2.
http://www.fourcc.org/yuv.php#IYU2

[jmone]

Originally Posted by betaking

http://hotfile.com/dl/127317313/dd3a..._(Svn).7z.html

Thanks.

Did some testing with an EVO from "Heroes, S1E1"

MediaInfo reports it as:

Video
ID                               : 253 (0xFD)-85 (0x55)
Format                           : VC-1
Format profile                   : AP@L3
Duration                         : 53mn 17s
Bit rate                         : 18.6 Mbps
Width                            : 1 920 pixels
Height                           : 1 080 pixels
Display aspect ratio             : 16:9
Frame rate                       : 23.976 fps
Chroma subsampling               : 4:2:0
Bit depth                        : 8 bits
Scan type                        : Progressive
Scan order                       : 2:3 Pulldown
Compression mode                 : Lossy
Bits/(Pixel*Frame)               : 0.374
Stream size                      : 6.92 GiB (91%)

When I play it with LAVSplitter / LAVCUVID / madVR the movie is reported as 59.94 and I get presentation glitches and it parts it stutters badly.

The same file when remuxed to M2TS plays at 23.976 and while it does not have the presentation glitches it too does not look very good with panning and will stutter on these scenes badly.

Samples:
Original EVO: http://www.megaupload.com/?d=BOC0RSXW
Remuxed M2TS: http://www.megaupload.com/?d=H5USKBUW

[VipZ]

Originally Posted by jmone

Thanks.

Did some testing with an EVO from "Heroes, S1E1"

When I play it with LAVSplitter / LAVCUVID / madVR the movie is reported as 59.94 and I get presentation glitches and it parts it stutters badly.

The same file when remuxed to M2TS plays at 23.976 and while it does not have the presentation glitches it too does not look very good with panning and will stutter on these scenes badly.

I'm Uploading samples:
Original EVO: TBA
Remuxed M2TS: TBA

Yep, the only way to play EVO's perfectly is natively with LAV Splitter/Audio/Video. I think Arcsoft may work and LAV CUVID, if you have ATI and why go though all the trouble, where LAV Video works perfectly.

Hero's S1 is the only HD-DVD I haven't replaced, but they work fine with the LAV combo.

[nevcairiel]

Originally Posted by roytam1

It had in the past, YV24 (or I444).
but according http://forum.doom9.org/showthread.php?t=113362 , it is not in spec anymore.
AviSynth and VirtualDub will output raw YUV444p video in AVI with FourCC YV24.

for packed YUV 4:4:4, there is an alternative, IYU2.
http://www.fourcc.org/yuv.php#IYU2

There is no use in weird formats if nothing else supports them.

Originally Posted by nand chan

@nevcairiel: Does this build of LAV Video include the swscale levels bug fix?

What bug fix?

[roytam1]

Originally Posted by nevcairiel

There is no use in weird formats if nothing else supports them.



What bug fix?

At least madVR will support YV24 and I444 ;-)

[Morpheus_xx]

Hi,

does the LAV splitter allow to use the AVCHD playlist files in same way as for BluRay discs?

I don't only mean the playback of the single *.MTS files, but also to use the playlist (*.MPL)

The AVCHD structure is nearly identical to BD, but uses short file extensions (3 chars), means: *.bdmv -> .BDM ; *.m2ts -> *.MTS

The main issue with such playlists is, they contain file references to *.m2ts, although the real filenames are *.MTS
(see also http://en.wikipedia.org/wiki/File:AV..._structure.svg).

When you try to open the playlist with the LAV splitter it fails, because the referenced files are not found. Could the splitter be extended to support the short file extensions as kind of "fallback" source when reading the stream files?

Thank you
Morpheus_xx

[dann23]

@nevcairiel
Does lavvideo support subtitles in wmp12? I tried some mkv files but no subtitles. I see in wmp12 that lavvideo and lavaudio are used for decoding but no subtitles. I use the standard settings for lavsplitter and I even tried to put eng in the preffered languafes field.