LAV Filters - DirectShow Media Splitter and Decoders

[Carpo]

you could try using lav splitter instead of haali

[sneaker_ger]

Originally Posted by nevcairiel

MKV only has the Display Width/Height fields internally, so whatever you set, it'll end up in those fields.
If you want portability, i would recommend to make sure that the Aspect Ratio is also properly set in the video headers, at least H264, VC1 and MPEG2 have fields for that. A lot of players ignore the container values.

Indeed. (Though the Matroska specs also allow other display width/heigth units than pixels, but mkvmerge does not write those.)
Also, if SAR is set in bitstream, mkvmerge will automatically read that info and set the container info accordingly.

[nevcairiel]

LAV Filters 0.49

LAV Splitter
- Improved MKV demuxing performance from slow sources (network streaming, etc)
- Improved stream detection on Blu-rays
- Improved support for RealAudio (COOK, SIPR, etc) in MKV
- Support for streaming from HTTP URLs

LAV Audio
- Improved support for DTS files with Little-Endian or 14B encodings

LAV Video
- New VC1/WMV3 decoder based on the Microsoft DMO Decoder (new default)
- Updated Intel QuickSync decoder (0.29, r44)
- Fixed decoding of some MBAFF H264 streams with DXVA2
- Improved Stream Aspect Ratio logic in the CUVID decoder for H264 streams
- Fixed Deinterlacing when DXVA2 Native is active in certain situations

Download: Installer (both x86/x64) -- Zips: 32-bit & 64-bit

VC1/WMV3 DMO Decoder
In this version i implemented a new decoder for VC-1 and WMV3 content. Specifically, LAV Video can now directly access Microsofts decoder and use it for decoding directly.
This has the advantage that all the small bugs that Microsofts DirectShow version of the decoder has are hopefully being worked around, and that the software fallback in LAV can fully function in case Hardware decoding is not available.
This feature is similar to ffdshows "WMV9" option for VC-1 (however completely written from scratch)

To use this, you have to make sure VC-1 is enabled in the list of formats in LAVs configuration. It used to be off by default in earlier versions, so if you've opened the configuration before, it'll have written that default to the registry.
As of this version, VC-1 is now default on.

In case you want the ffmpeg decoder for VC-1 back, there is an option on the Formats options page.

HTTP Streaming
LAV Splitter can now directly read files from a HTTP server and does no longer have to go through the "File Source (URL)" to do this. This has some key advantages, specifically regarding seeking.
However, LAV is not setup to just magically open all HTTP URLs. This feature at this time is meant for player developers, so that they can use LAV to access HTTP sources directly.

HTTPS is not yet supported.

Other changes
The other changes are all not that big, small fixes and improvements for DXVA2, some splitter improvements, and the usual load of bugfixes that sometimes didn't even make the changelog.

[nevcairiel]

Originally Posted by The SphereX

Motherboard: Zotac ION ITX D
Chipset: NVidia ION (video decoder is set to use "Nvidia Cuvid")
CPU: Intel Atom N330 Dual Core @ 1,6 GHz
Player: MPC-HC
Splitter: Haali Media Splitter
Renderer: VMR-7
OS: Windows XP Professional (SP3)

The ION/Atom platform seems to be too slow to use CUVID properly on many files, because it has an abysmal memory copy performance.
I would recommend to use a DXVA based decoder, however on XP you'll have to use MPC-HCs own DXVA decoders, as LAV Video will most likely not work.

I would also recommend VMR-9 instead of -7.

[wanezhiling]

Wow, LAV Filters 0.49! Update!

[sneaker_ger]

Originally Posted by mindbomb

question:

For a file that is being sequentially downloaded, lets say you have the first 10% of it. If you open it up, and try to play it, even if it finishes downloading before you hit the 10% mark, your video just freezes at the 10% mark.

Can anything be done about this?

It works for me on Matroska files - or at least more often than not. Which format are you testing?

[Budtz]

Is it possible to use lav filters with apple trailers btw? so they open in mpc-hc in stead of the crappy quicktime?

[sneaker_ger]

It can open them if downloaded and I'm not sure if LAV is technically capable to directly stream them in principle, but apple blocks other players out by checking the HTTP User Agent for the string "quicktime" anyways.

[Inspector.Gadget]

Originally Posted by Budtz

Is it possible to use lav filters with apple trailers btw? so they open in mpc-hc in stead of the crappy quicktime?

You want the "MOV DL Tool", which is or was packed with Quicktime Alternative. That will allow you to get the trailers as actual files on your desktop, and then you can watch them in whatever player suits you (they are standard MPEG-4 AVC / AAC / container, so LAV Filters can certainly handle them).

[Sebastiii]

Nice WORK
Thank you again

[Mercury_22]

Why LAVSplitter's "Preferred Language" audio doesn't work in WMC & WMP but it works with MPC-HC, for mkv (= why is not ignoring the default track and use the language specified in the settings) ?
Possible same thing happens for BD (index.bdmv) / m2ts but since I can't be sure LAV it's used for this one (cause there's no tray icon when LAV it's used )...I'll say it only happens with mkvs (it's a clean win7 install with just LAVFilters (registered only) and MPC-HC)

Edit: do you need a sample ?

[cremor]

Thanks for the VC-1/WMV changes in the decoder!
One question though: Should we still use the Microsoft splitter for WMV? Because it's still disabled by default in the installer.

[nevcairiel]

Originally Posted by cremor

One question though: Should we still use the Microsoft splitter for WMV? Because it's still disabled by default in the installer.

Yes you should.

Originally Posted by Mercury_22

Why LAVSplitter's "Preferred Language" audio doesn't work in WMC & WMP but it works with MPC-HC, for mkv (= why is not ignoring the default track and use the language specified in the settings) ?

WMP/WMC may be overriding the stream choices. Thats the only reason it wouldn't work. Nothing i can do.

[mindbomb]

Originally Posted by sneaker_ger

It works for me on Matroska files - or at least more often than not. Which format are you testing?

mp4 files from youtube.

i'm manually downloading them and playing them rather than using the built in player. It would be great if I didn't have to wait for the whole file to finish first though.

[dansrfe]

Does LAV Video support 10bit H.264 decoding currently? I tried a 10bit file and it didn't work with LAV so I had to enable madVR's internal ffmpeg decoder.

EDIT: 10bit decoding works with LAV Video. My mistake.

[nevcairiel]

Originally Posted by dansrfe

Does LAV Video support 10bit H.264 decoding currently? I tried a 10bit file and it didn't work with LAV so I had to enable madVR's internal ffmpeg decoder.

Works just fine here.

[dansrfe]

Also, if we're using madVR then the only choice is x86 for all LAV Filters right?

[CharlieCL]

Is this an optimized Lav Video settings?

select DXVA2 Native
disable RGB32/RGB24/YV12/YADIF

[dansrfe]

Is there a way to check what output audio bit depths my audio card supports? I'm very sure it's 16-bit but I'm not 100% sure.

Also, If I'm using ffdshow audio processor just to downmix the audio and LAV Audio for decoding, is it better to have LAV Audio send a 32-bit float stream to ffdshow audio processer and have ffdshow dither the bit depth to 16-bit or just deselect everything but 16-bit depth in LAV Audio and have ffdshow not touch the bit depth?

[mindbomb]

when doing post processing like mixing, make sure lav audio sends out the highest quality possible (the default setting)