[Joachim Buambeki]

Originally Posted by Myrsloik

I'll increase it to 63 for the next version. But be aware that once a frames only changes +-1% it probably won't have a visible impact at all. All calculations are done with no loss of precision.

Great, thanks - would it be possible to get even more? I am aiming for at least a 30x speedup, which would mean 30*3,8 (19/5) frames (if the function above is used to determine the weight for each frame) need to be processed.

Originally Posted by Myrsloik

How accurate does it have to be? Chopped off sinc not good enough?

I replicated the effect in Photoshop and a few percent off never made a visible difference. If possible, I would still prefer a fair degree of precision but in the end, if I can load a ProRes444 (12bit) file and render to EXR or DPX without any degradation I am fine.

Here is a sketch for the script, obviously this is in AVS style and even there I don't really have an idea how to do it but it should give an idea what I have in mind. If you have any ideas what to improve conceptually or how to actually execute it, feel free to post it. :-)

function haventcomeupwithacoolnameyet(parameters)

{
speedup = default( speedup, 5 ) # speedup rate, float
pre_speedup = default( pre_speedup, 0 ) # if this offers no speed gain, use it to determine the threshold where more samples don't make the result any smoother

shutter = default(shutter, 1 )  # 1 = symmetrical blend (the one posted)
                                # 2 = asymmetrical blend
                                # 3 = square shutter, can be >360°, rounded to nearest possible value
                                # 4 = experimental idea, after first pass, pixels with higher local contrast are given more weight in second pass

cutoff = default(false)         # cutoff negative weights 

pad = default(false)            # optional padding to 360° shutter for >360° shutter sources with MVtools before frame averaging, optional denoising

warnings = default(true)        # show only warnings
OSD = default(false)            # displays parameters, frame count pre/post and warnings
bars = default(false)           # visualises how blending works by generating blank clip with white bars on grey background with clip properties (optionally show video as pip in corner)

# generate_frame_weights() outputs weight for each frame based on the selected blend type
# For square shutters, round to multiple of 360°/speedup

generate_frame_weights(speedup, shutter) #outputs weight for each frame based on the selected shutter type
{however that might work...}    # generates w1, w2, w4, ...,w99

c.misc.AverageFrames(clip, [w1, w2, w4, ...,w99])
}