LAV Filters - DirectShow Media Splitter and Decoders

[NikosD]

I thought you were talking about general problems on Intel's HW.

I try to keep equal distances from all the developers that I use their products.

Different view from you obviously

[roytam1]

new nightly:
http://roy.orz.hm/lavf-w32-nightlies...127-9adb451.7z

No diff provided as the diff was checked-in, thanks nev.

[vivan]

Originally Posted by NikosD

On SNB HW I don't have any issues with DXVA H.264 and PotPlayer.
It even plays fine 16 Ref and any H.264 clip I've thrown on it.

Do you have any odd sample to test ?

http://www.mediafire.com/?id7cd8aujnmwslf

[CruNcher]

@ Nev
another .ts issue

http://www.mediafire.com/?1pm5y68sbf35fst

lav splitter = fails
mpc-hc splitter = works
av splitter = works
vlc = works
mplayer = works
libav ffplay = works
ffmpeg ffplay = works

[nevcairiel]

Originally Posted by CruNcher

@ Nev
another .ts issue

http://www.mediafire.com/?1pm5y68sbf35fst

Fixed

[nevcairiel]

Originally Posted by Aleksoid1978

I have freeze my PC (help only Restart button ) when try to playback this sample http://aleksoid.tosei.ru/Test/Sample...d.split.2.m2ts at DXVA mode. Play fine at CUVID mode.

Fixed

[clsid]

Nev, could you have another look at MsVideo1/MSRLE and other paletted formats? With LAV Splitter the palette data is handled automatically, but for the MS AVI splitter you need to do that manually. Relevant code can be found in libavformat\avidec.c line 624 and 1133.

[nevcairiel]

The funny thing is, i don't even know why it works with LAV. I don't supply the palette, but for some reason it figures it out.

I did however add some code that should try to send the palette to the decoder.

Edit:
I also figured out why/how it works with LAV, hooray.

[vinnytx]

Hello,

Please someone can post the link of lav filters dxva?
Thanks

[wanezhiling]

Originally Posted by vinnytx

Hello,

Please someone can post the link of lav filters dxva?
Thanks

http://xhmikosr.1f0.de/index.php?fol...F2ZmlsdGVycw==

[nevcairiel]

LAV Filters 0.45

LAV Splitter
- Improved playback of concatenated H.264 MOV/MP4 files
- Adjusted FLAC MediaType to avoid ReClock stealing the connection
- Improved playback of MPEG-TS with timestamp discontinuities

LAV Audio
- Fixed playback of very short PCM samples
- Improved COOK decoding without LAV Splitter

LAV Video
- New DXVA2 "copy back" decoder (see release notes)
- Updated Intel QuickSync decoder (r29)
- Multi-threaded decoding for RV30/40, UtVideo and DNxHD
- Support for the "FCC" color matrix
- Improved Dirac support
- CUVID support for MPEG-4 ASP (experimental)
- Support for Intel Indeo 4, MS Video 1, 8BPS, LOCO, ZMBV, VCR1, AASC

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

New and note-worthy? Well....

DXVA2 "copy back"
In our series of hardware decoders, the new DXVA2 decoder now features hardware decoding also for AMD/ATI.
Its a "copy back" (or "renderless") decoder - that means all frames are copied back from the GPU to normal memory.

Sadly, however, AMD/ATI cards suffer from a serious performance penalty, which prevents them from showing their full potential. The decoder is fully Blu-ray compliant, and even goes beyond that, however playing 60fps movies will most likely not work fluidly.
H.264, VC-1 and MPEG-2 are fully supported (progressive and interlaced), as long as your hardware can keep up. Very old AMD/ATI cards, like 3000 series and below, might not be able to use this decoder. 4000 and up seem to be working ok.

I do have plans to work on a "native" DXVA2 decoder, which does not need to copy the frames back from the GPU, avoiding this performance bottleneck - however that goes with the loss of the flexibility of course. No post-processor, only EVR, etc.

For everyone else, i recommend to stick to your native decoders (CUVID/QuickSync), as they generally work better and faster then DXVA2.

Known Issues:
- Interlaced H.264 on Intel can show image corruption
- Some MPEG-2 streams show image corruption (all GPUs)

There is also the potential for crashing the GPU driver. It happened mostly on VC-1 interlaced, and all cases i encountered i also fixed, but if it happens, just let me know, and i'll look into it.

MPEG-4 ASP in the CUVID decoder
There seems to be an issue in the latest NVIDIA drivers that cause the decoder to not work on most MPEG-4 ASP files!
Older drivers, like 270 series, seem to be working OK.

Its experimental, use it at your own risk, its off by default.

And the rest...
Everything else is pretty much standard changes, a few new video formats supported, a number of improvements inherited from ffmpeg, the usual number of bugs fixed.

I still didn't get around to re-writing the installer, but i hope i can get the motivation to do it for the next big release.
What else is up next? I haven't decided. There is some features on the table, audio mixing, dvd support, some subtitle work .. we'll see.

Take care.

[wanezhiling]

First

[nevcairiel]

Originally Posted by wanezhiling

First

Actually, you are #8554

[fastplayer]

Originally Posted by nevcairiel

4000 and up seem to be working ok.

Confirmed, at least on my HD4670. This is the first time I've used DXVA without having anything to complain about. Dunno if it's because the drivers have matured by now or nev just knows how it's done. I suspect the latter.

[dukey]

excellent work nevcairiel,
Copy back is good, but native DXVA would be even better What do you plan to do with subtitles ?

[Sebastiii]

Great Thanks

[vinnytx]

Originally Posted by wanezhiling

http://xhmikosr.1f0.de/index.php?fol...F2ZmlsdGVycw==

Thank you very much

[clsid]

Originally Posted by nevcairiel

The funny thing is, i don't even know why it works with LAV. I don't supply the palette, but for some reason it figures it out.

I did however add some code that should try to send the palette to the decoder.

Edit:
I also figured out why/how it works with LAV, hooray.

I can confirm it works great now. Just curious, why did it work with LAV?

[clsid]

Originally Posted by nevcairiel

What else is up next? I haven't decided. There is some features on the table, audio mixing, dvd support, some subtitle work .. we'll see.

Issue 32 would be cool as well. Loading DirectVobSub after LAV Video. Should be needed only for WMP/WMC on Vista/7. Having that feature would mean one less reason to use Haali splitter and ffdshow when wanting subs.

[nevcairiel]

Originally Posted by clsid

Just curious, why did it work with LAV?

Apparently the demuxers insert the palette data in a special format at the end of the frame data, which the ffmpeg decoders can then read, and every other normal decoder would just ignore it, because it already has all the data it needs. It seems to be working just fine.

ffdshow should also be able to understand that data, unless you broke that part in your libav somehow.

Originally Posted by clsid

Issue 32 would be cool as well.

Since other people also have commented that they want some feature done more then the others

I work on what is fun to work on, not what would be useful!
Also, opinions on what feature is important are quite different amongst different people.

Anyhow, i don't take requests, is all.