Well, not sure if this was how I did it last time, but this command seems to scale stuff up without any interpolation whatsoever: ffmpeg -r 60 -i infiles.png -c:v libvpx-vp9 -crf 20 -b:v 0 -threads 3 -vf "scale=1920x1080:interl=0" -sws_flags neighbor -pix_fmt yuv420p outfile.webm