Which decoder for VC-1 source?

[Anakunda]

Hi, I feel like I need some help with following: having barebone VC-1 stream (.vc1 file) I need this be decoded by AviSynth somehow. I have met some opinions that Nvidia's CUDA doesnot decode VC-1/H.264 as good as software decoders (true or not?) so I'd like to avoid DGindexNV, now trying with ffmpegsource plugin instead:

I do ffmsindex source.vc1 source.vc1.ffindex and get the index correctly. Now I put into my script FFVideoSource("I:\video\(workset)\source.vc1.ffindex") and try to preview the video, but get suddenly this error: FFVideoSource: Can't open 'I:\video\(workset)\source.vc1.ffindex'
(source.avs, line 1)

What's wrong and what should I use instead? Thanks for ideas.

[Atak_Snajpera]

mux it into mkv container.

[Selur]

Muxing to mkv might help, other than that, you could try LWLibLavSource

[Anakunda]

Thanks,
Muxing to mkv might help
This seem to work however only not indexed
FFVideoSource("source.mkv") -> working but slow
FFVideoSource("source.mkv.ffindex") -> not working
LWLibLavSource
Can I get a link where to download?

[Groucho2004]

Can I get a link where to download?
Here (https://drive.google.com/folderview?id=0BwV03nn6LPd9OXJUWVVMMXZmNUU&usp=sharing) you go.

[Guest]

I have met some opinions that Nvidia's CUDA doesnot decode VC-1/H.264 as good as software decoders (true or not?) so I'd like to avoid DGindexNV Not true, it's nonsense. There is no reason to avoid CUVID.

[detmek]

Also, do not try to load index file with script. Load actual video with FFVideoSource and index will be used by default.

[Atak_Snajpera]

Keep in mind that ffmpeg based decoders do not support interlaced VC-1. In this case haali media splitter + ffdshow (wmv9) will be needed.

[JEEB]

Keep in mind that ffmpeg based decoders do not support interlaced VC-1. In this case haali media splitter + ffdshow (wmv9) will be needed.
This hasn't been true for a while now (as in, a couple of months at least). As far as it can be tested, interlaced VC-1 should now work just fine. It's not bit-exact with the MS decoder, but the differences were considered to be minor enough to be a non-problem (you have to remember that commonly used formats before AVC/H.264 were generally not specified to be bit-exact, although I'm not sure about VC-1) .

If there are any samples still borked, you might want to poke the ffmpeg trac about them :) .

[Atak_Snajpera]

good news then :)

[Anakunda]

Also, do not try to load index file with script. Load actual video with FFVideoSource and index will be used by default.
This is working as well. I was under some impression source filter should get reference to index. Thank you all, back on the road.