1 Topic by jihong (edited by jihong 03-10-2016 21:29:55)

Topic: Can't SVP4 run with LAVfilters/Potplayer?

I have installed SVP4 free in Windows 10 and checked that works with default ffdshow codecs/filters.
(SVP4 DirectPlay 64bit + Avisynth+ 64bit + MadVR + Potplayer 64bit +VC2013 64bit)

Then I realized ffdshow doesn't support HEVC and I'm now trying to do this with LAVfilters. I'm currently using LG 4K 10bit monitor.

I have installed default LAVFilters provided by the SVP4 free installer, and configured LAV video decoders to use DXVA2 copy-back with P210(4:2:2 10bit) output format and software YADIF deinterlacing.

Now the ffdshow raw video filters that I listed in Potplayer's global filter list doesn't work and show in currently used filter list at Ctrl+F1 information window, and no 60fps frame interpolation. There's no SVP messages(which shows if works) on the screen also.

I have searched for hours and finally giving up, posting this topic. Need helps sad

  • MAG79
  • SVP developer
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Re: Can't SVP4 run with LAVfilters/Potplayer?

jihong wrote:

configured LAV video decoders to use DXVA2 copy-back with P210(4:2:2 10bit) output

What if you choose YV12 (4:2:0 8bit)?
It must work. SVP supports 8bit video only at input for now.

Re: Can't SVP4 run with LAVfilters/Potplayer?

MAG79 wrote:
jihong wrote:

configured LAV video decoders to use DXVA2 copy-back with P210(4:2:2 10bit) output

What if you choose YV12 (4:2:0 8bit)?
It must work. SVP supports 8bit video only at input for now.

Oh god, thanks! This is the perfect solution.
Allowing LAVfilters and Potplayer to output it at any colorspace and activating ffdshow raw video filters, it starts to work.
Colorspace is now changed into YV12 automatically.

But then, I have to ask an another thing.
YV12 is 6bit+dither 4:2:0 colorspace which is the worst one. If there's no support for 10bit colorspace such as P010(4:2:0 real 10bit),
is there any other way to use a different colorspace like YV24(real 8bit 4:4:4) colorspace at least?

  • MAG79
  • SVP developer
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Re: Can't SVP4 run with LAVfilters/Potplayer?

jihong wrote:

YV12 is 6bit+dither 4:2:0

Not the 6bit but near.
YV12 (4:2:0) is 8bit/pixel for luma and 8bit/4pixels for chroma. So it is 8bit shades but with spatial aggregation of color.
See Chroma subsampling for more information.

jihong wrote:

is there any other way to use a different colorspace like YV24(real 8bit 4:4:4) colorspace at least?

No. At this moment you can use YV12 only.