ffmpeg -i screens__backward_forward/%%07d.jpg -vf "fps=23.976,scale=-1:480:flags=lanczos,palettegen" -r 23.976 -threads 16 -y palette.png
ffmpeg -i screens__backward_forward/%%07d.jpg -i palette.png -filter_complex "fps=23.976,scale=-1:480:flags=lanczos[x];[x][1:v]paletteuse" -r 23.976 -threads 16 -y screens__backward_forward.480.gif

ffmpeg -framerate 23.976 -i screens__backward_forward/%%07d.jpg -c:v libwebp -vf "fps=23.976,scale=-1:480" -lossless 0 -compression_level 3 -q:v 70 -loop 0 -preset drawing -an -sn -vsync 0 -threads 16 -y screens__backward_forward.480.webp

ffmpeg -framerate 23.976 -i screens__backward_forward/%%07d.jpg -vf "format=yuv420p,scale=-1:480" -r 23.976 -threads 16 -c:v h264 -crf 16 -y screens__backward_forward.480.mp4