Re-encode sniffer mp4s again, closes #14

ffmpeg -i src/lib/assets/Snifflet_plop_pixel_art.gif -c:v prores_ks -profile:v 5 -pix_fmt yuva444p10le -vf "scale=320:320:flags=neighbor" -qscale:v 1 Snifflet_plop_pixel_art.mov -y

then in shutter encoder: h.265, hw accel, enable alpha

Author: jpenilla