ProPainter Vapoursynth filter

[Selur]

Using a RTX 4080 with:

clip = propainter(clip, length=250, mask_path="running_car_mask.png", device_index=0, enable_fp16=True)

and

"F:/Hybrid/64bit/x265.exe" --input - --fps 25 --y4m --crf 18.00 --output "G:\Output\test.265"

in vsViewer, I x265 reported:

encoded 192 frames in 50.79s (3.78 fps), 1707.74 kb/s, Avg QP:21.51

Using larger length values speeds things up here.
When using length=25, I get:

encoded 192 frames in 81.51s (2.36 fps), 1703.32 kb/s, Avg QP:21.51

So maybe requesting more frames than needed directly and using a cache might help.
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Maybe looking how HolyWu&Co do it gives some ideas how to speed things up.

Cu Selur