Motion-blur effect through blending?

[couleurm]

Hello, I've been looking into different ways to produce motion-blur to apply on high FPS (120-360) gameplay footage, and have been making a CLI wrapper for VapourSynth with a "config system" for convenience

The main ways I've found are:

• Using AverageFrames on high FPS clips and havsfunc.ChangeFPS to "reasonable" framerates (30/60)
• Using frame interpolation like SVP before doing previously mentionned step (artifacts are minimal due to high FPS content being equivalent to slow-mo footage)
• FlowBlur, commonly presented as ""a free alternative to RSMB""

One of the ways that would be interesting to try is

• To do some interpolation convolution-based (literally only reason I mention it is because I saw "good with slow-mo" and "blended")
• Mix interpolation and blending (if I recall correctly sometimes frame interp algos can fall back to blending when there is too much movement), then cut the FPS down to 60/30
• Edit: Mix Blend and FlowBlur (if that is even a thing), or use Super & vectors from high FPS footage on same footage changed to 60/30

I'm just throwing ideas without really knowing what I'm talking about, do you have any suggestions or things that came in mind I should try out? Thank you 👍

[L4cache]

Interesting, but I think AverageFrames is actually kind of time-conv thing suggest you try FlowBlur + AverageFrames

[couleurm]

Interesting, but I think AverageFrames is actually kind of time-conv thing suggest you try FlowBlur + AverageFrames

Yes, I recently realized applying FlowBlur before blending looks very good, even with 3 weights (e.g 180FPS->60FPS),

This practice has been common for almost 10 years (temporal soften seems to act exactly like AverageFrames in that context)

[couleurm]

not an issue