>>110241125
enabled vae previews for each step;
--preview vae --preview-path /tmp/preview_%02d.png --preview-interval 1
then encoded a video using them as frames;
ffmpeg -r 10 -i preview_%02d.png -c:v libvpx-vp9 -b:v 6200k -pass 2 -vf scale=1920:-2 -y out2.webm
this will slow down generation a bit since that's doing vae decoding on each step