LAV Filters - DirectShow Media Splitter and Decoders

[sneaker_ger]

If no decoder accepts the connection?
Sorry, I don't know much about DirectShow.

Also see my edit.

[nevcairiel]

LAV only exposes a pin, it doesn't manage the graph building.

[sneaker_ger]

I see. So then a Splitter option would be needed.

[Vasilich]

i suppose LAV audio in above case will select AC3 core track if TrueHD is UNchecked in its options?

[nevcairiel]

Thats not how DirectShow works. The source exposes a pin with a specific type, and DirectShow trys to find a filter that accepts this type. If the exposed type is TrueHD, then you need a decoder that can decode TrueHD, LAV Audio cannot decide to change this to AC3, because it wouldn't even get a chance for that. Usually the player or DirectShow itself control the graph building, the filters can only decide what they accept and what not.

[Vasilich]

it means that there is no chance to hear anything (without manual switching of audio tracks) for above case if my receiver doesn't support trueHD?
or LAV audio can decode trueHD but i then need to use audio postprocessor for encoding this to AC3 because i have only optical cable connected to my receiver?

[sneaker_ger]

Originally Posted by Vasilich

it means that there is no chance to hear anything (without manual switching of audio tracks) for above case if my receiver doesn't support trueHD?
or LAV audio can decode trueHD but i then need to use audio postprocessor for encoding this to AC3 because i have only optical cable connected to my receiver?

Either that or stereo only.

[clsid]

How about a simple option "Prefer HD audio tracks"?

Checked: use current logic based on quality and number of channels
Unchecked: DTS > AC3 > TrueHD, and 7.1 = 5.1 > 2.0

That would be helpful for those who want to bitstream to an older receiver.

[nevcairiel]

Originally Posted by Tacio

http://www.mediafire.com/?bo70xnw2xl9n30d
In DXVA checker this egur's test clip plays fine using my HD3000 and MS DTV-DVD video decoder. But with LAV filters and DXVA2n video is corrupted. The same is for MPC-BE.

I think i actually finally figured it out, and fixed the problem.

Try with this version:
http://files.1f0.de/lavf/LAVFilters-0.54-4-gc509fe2.zip

I would also appreciate if anyone could test this version with DXVA2 Native or CB on older Intel GPUs, if anyone has one? Like the 4500MHD? or Atoms?

Here is a sample which broke before this version, but works on SNB/IVB now:
http://files.1f0.de/samples/Madoka-002.mkv

Any feedback would be great, please confirm if its using DXVA2 on this sample, it will fallback to software if your Hardware and/or Driver doesn't support the proper H.264 spec (only on this sample, others with fewer reference frames will still use DXVA2 on those systems).

If you still have issues, a DXVA Checker report might be useful.

[Tacio]

Thanks!
Now this sample works fine on my HD3000 and atom 2800 using LAV filters and dxva2n!

[nevcairiel]

Great, thanks for confirming.

[chros]

A quick question regarding video decoding on nvidia GPU and dxva2n with madvr: is there any advantage using dxva2n over cuvid ? (performance, quality, etc.)

Thanks for your hard work!

[DragonQ]

Originally Posted by chros

A quick question regarding video decoding on nvidia GPU and dxva2n with madvr: is there any advantage using dxva2n over cuvid ? (performance, quality, etc.)

Thanks for your hard work!

DXVA2 Native uses less power.

[dansrfe]

Feature request:

Keyboard shortcut to increase/decrease audio delay by specified amount on-the-fly for the current file.

[huhn]

plus minus at mpc hc

[owlsroost]

Originally Posted by nevcairiel

I think i actually finally figured it out, and fixed the problem.

Try with this version:
http://files.1f0.de/lavf/LAVFilters-0.54-4-gc509fe2.zip

I would also appreciate if anyone could test this version with DXVA2 Native or CB on older Intel GPUs, if anyone has one? Like the 4500MHD? or Atoms?

Here is a sample which broke before this version, but works on SNB/IVB now:
http://files.1f0.de/samples/Madoka-002.mkv

Any feedback would be great, please confirm if its using DXVA2 on this sample, it will fallback to software if your Hardware and/or Driver doesn't support the proper H.264 spec (only on this sample, others with fewer reference frames will still use DXVA2 on those systems).

If you still have issues, a DXVA Checker report might be useful.

Tried the sample on Intel HD graphics (i5-460M 'Arrandale') - always falls back to software (which I suspect is the correct thing to do) and plays OK.

Tony

[nevcairiel]

Ok thanks, looks like the old Intel GPUs do not offer the same functionality as the SNB/IVB GPUs then (which was mistakenly simply ignored before )

[wanezhiling]

http://pan.baidu.com/share/link?shar...&uk=3558042035

VP62, lav cant work.

[owlsroost]

Originally Posted by nevcairiel

Ok thanks, looks like the old Intel GPUs do not offer the same functionality as the SNB/IVB GPUs then (which was mistakenly simply ignored before )

Here's the info from DXVA Checker.

Tony

[nevcairiel]

Originally Posted by owlsroost

Here's the info from DXVA Checker.

I figured it would only have the Intel-specific ClearVideo H.264 variants, and not the generic ones, thanks.