If you're getting black frames (Patreon)

If you're getting black frames, it's probably a problem with your VAE.

By default, everything is being processed at half precision to speed things up and cut the VRAM usage in half. Some models' VAE (like the vanilla sdxl, for instance) are sensitive to that and may produce completely black frames, or black rectangles if you're using tiled VAE feature.

To avoid this:
1) turn off the tiled vae (and re-run that cell)
2) turn on no_half_vae checkbox in the load model cell (will use more VRAM)

If you are using SDXL modes, you can keep no_half_vae off and download a fixed fp16 vae from here - https://huggingface.co/madebyollin/sdxl-vae-fp16-fix/resolve/main/sdxl_vae.safetensors
and put your local path to it into vae_ckpt field. (uses less vram)