SVPflow motion interpolation (Avisynth + Vapoursynth, Linux, Mac?)

[johnmeyer]

Originally Posted by flossy_cake

It's extremely impressive when it's working well, on controlled pans and such. "So close yet so far" is how I would describe it.

Yup. You perfectly summed up motion estimation. My version of your summation comes from the last two lines of the poem about the girl with the curl on her forehead: "When she was good she was very, very good, but when she was bad, she was horrid."

If you have lots of time, you can make two videos, one using motion estimation and the other using frame blending. You then look for the awful motion estimation artifacts and, for that one frame, substitute frame blending. It works.

One person in this forum made a valiant attempt to automate that substitution idea, and even used masks to only replace the frame-blended result for the part of the frame which contains the artifact. He put a huge effort into the project, but unfortunately, it never quite succeeded.

[coolgit]

Originally Posted by flossy_cake

Thanks, that's what I was anticipating.

Well, In the end I couldn't tolerate the artefacts with SVP regardless of settings. Hand gestures are particularly problematic.

Probably the one setting that mitigates interp artefacts the most is the "area" setting but then it doesn't really look much different than frameblending, actually it looks like a blend of the frameblended frame and the motion compensated frame as I can still see a dull remnant of the motion compensated junk blended in. Seem to be lots of scenechange false positives too.

It's extremely impressive when it's working well, on controlled pans and such. "So close yet so far" is how I would describe it.

For clarification are you using SVPFlow or SVPFlow2?

[flossy_cake]

Originally Posted by coolgit

For clarification are you using SVPFlow or SVPFlow2?

I'm not sure - in my avisynth plugins folder I have:
svpflow1_64.dll
svpflow2_64.dll

They came from v4.2.0.142 here (I specifically chose that version as it's the last version that doesn't require SVPManager to be running).

I am calling it using the Interframe() wrapper, eg.

InterFrame(
\ GPU=true,
\ Tuning="film",
\ Preset="medium",
\ OverrideAlgo=21,
\ OverrideArea=100,
\ Cores=8)
\ .Prefetch(8)

# reducing halos with OverrideAlgo (13->21)
# reducing wavy lines with OverrideArea (0->100)

I tried moving svpflow1_64.dll out of the plugins folder and got the error "no function SVSuper" so I think it's using svpflow1_64.dll, although Interframe also calls SVAnalyse() and SVSmoothFps() as well.

But Interfame is quite old so it's probably using SVPFlow1 I would imagine.

How do I use SVPFlow2 at the same settings as Interframe?

edit: oh SVPSmoothFPS() is SVPFlow2, right?

[Selur]

edit: oh SVPSmoothFPS() is SVPFlow2, right?

Yes, see: https://www.svp-team.com/wiki/Manual:SVPflow#svpflow2

[flossy_cake]

I don't have motion interpolation on my TV - for those who have it on recent model TV's I'd be interested to hear some of your opinions about how SVPFlow compares with brands like LG, Panasonic, Sony. Is it much worse? A little worse? About the same? etc. I haven't been following the TV scene for a while, for all I know maybe frame interpolation on TV's got better over the last 10 years.

[coolgit]

Originally Posted by flossy_cake

I'm not sure - in my avisynth plugins folder I have:
svpflow1_64.dll
svpflow2_64.dll

They came from v4.2.0.142 here (I specifically chose that version as it's the last version that doesn't require SVPManager to be running).

Actually last version is svpflow1 4.3.0.156 and svpflow2 4.3.0.161.

[kedautinh12]

Originally Posted by coolgit

Actually last version is svpflow1 4.3.0.156 and svpflow2 4.3.0.161.

But it needs SVPManager to be running

[coolgit]

Originally Posted by kedautinh12

But it needs SVPManager to be running

Nope.

[Selur]

Hybrid comes with:
32bit Avisynth:
svpflow1.dll: 4.3.0.156
svpflow2.dll: 4.3.0.160
64bit Avisynth:
svpflow1_64.dll: 4.3.0.156
svpflow2_64.dll: 4.3.0.161
64bit Vapoursynth:
svpflow1_vs64.dll: 4.5.0
svpflow2_vs64.dll: 4.3.0.161

Cu Selur