VC-1 DirectShow decoding hell!

[Blue_MiSfit]

Hey folks,

I'm sure I'm missing something really simple here, but whack me upside the head and remind me..

I'm running Windows 7 RC1 for the record, and have the latest ffdshow-tryouts installed.

I've got a VC-1 MKV I ripped from a BluRay disc, and it's perfectly playable in MPC-HC, using the WMVideo Decoder DMO by default.

Now, I'm trying to load it into AviSynth per my usual procedure - via DSS2().

This fails with a "can't open" error. DirectShowSource returns a similar error.

I've tried setting VC-1 decoding in ffdshow to both libavcodec and WMV9, both with the same result. I also tried manually installing and registering the MPCVideoDec.ax filter from MPC-HC (which is just a DirectShow wrapper around libavcodec's VC-1 decoder - right?)

Short of building a manual filter graph (which I don't want to have to do every time I handle a VC-1 title), how the heck can I make VC-1 decode properly into AviSynth?

I'm sure it's some silly DirectShow decoder configuration...

Thanks!

~MiSfit

[7ekno]

Does FFMPEGSource2() work better as the input filter?

It might be that the MS one is a higher priority in the DirectShowSource chain, but doesn't play nice with the new Multimedia mechanism in Win7 (by barring external calls to MS codecs or something) ...

Tek

[Mounir]

you need the latest divx codec that's the best h264 decoder

[neuron2]

you need the latest divx codec that's the best h264 decoder This thread is about VC-1, not H.264!

[Blue_MiSfit]

@7enko:

I think you're right.

I tried FFMS2 and got the following crash when I tried to open the source with FFVideoSource:

Traceback (most recent call last):
File "AvsP.pyo", line 5804, in OnMenuVideoRefresh
File "AvsP.pyo", line 8822, in ShowVideoFrame
File "AvsP.pyo", line 9256, in UpdateScriptAVI
File "pyavs.pyo", line 167, in __init__
File "avisynth.pyo", line 117, in Invoke
WindowsError: exception: access violation reading 0x41CF35A0


I was able to index the MKV without issues.

I was also able to open an H.264 MKV using FFMS2 without issues..

~Misfit

[Atak_Snajpera]

I assume you forgot to force ffdshow as preffered DirectShow decoder. Execute ripbot264.exe once and everything will be set for proper vc-1 decoding. You can also use clsid's tool. http://forum.doom9.org/showthread.php?t=146910

[Blue_MiSfit]

Bingo!

Thanks for the pointer, Atak_Snapjera!

~MiSfit