fpng plugin for vapoursynth

[mikewando]

I've been dumping PNGs a lot lately and was frustrated with how slow imwri was to do it. So I poked around and managed to get fpng working as an alternative. So far seems to work well and much faster in my testing.

https://github.com/Mikewando/vsfpng

Also includes a python script in examples/dump_frames.py which could be interesting for folks who have the same usecase.

[lansing]

I did a speed benchmark with imwri, exporting a dvd anime episode with VIVTC


imwri:
Output 34761 frames in 5660.46 seconds (6.14 fps)
file size: 15.7 GB

fpng:
Output 34761 frames in 39.88 seconds (871.56 fps)
file size: 18.2 GB


The fpng is 142 times faster. Really good.