# Model configurations for video generation backends
# Backend selection is controlled via ACTIVE_BACKEND environment variable
# or --backend CLI flag

backends:
  wan_t2v_14b:
    name: "Wan 2.1 T2V 14B"
    class: "generation.backends.wan.WanBackend"
    model_id: "Wan-AI/Wan2.1-T2V-14B-Diffusers"
    vram_gb: 12
    dtype: "fp16"
    enable_vae_slicing: true
    enable_vae_tiling: true
    chunking:
      enabled: true
      mode: "sequential"  # Options: sequential, overlapping
      max_chunk_seconds: 4
      overlap_seconds: 1  # Only used when mode is overlapping
    
  wan_t2v_1_3b:
    name: "Wan 2.1 T2V 1.3B"
    class: "generation.backends.wan.WanBackend"
    model_id: "Wan-AI/Wan2.1-T2V-1.3B-Diffusers"
    vram_gb: 8
    dtype: "fp16"
    enable_vae_slicing: true
    enable_vae_tiling: false
    chunking:
      enabled: true
      mode: "sequential"
      max_chunk_seconds: 6
      overlap_seconds: 1
    
  svd:
    name: "Stable Video Diffusion"
    class: "generation.backends.svd.SVDBackend"
    model_id: "stabilityai/stable-video-diffusion-img2vid-xt"
    vram_gb: 10
    dtype: "fp16"
    enable_vae_slicing: true
    enable_vae_tiling: true
    chunking:
      enabled: false

# Default backend selection
# Override with ACTIVE_BACKEND environment variable
active_backend: "wan_t2v_14b"

# Global generation defaults
defaults:
  fps: 24
  resolution:
    width: 1920
    height: 1080
  
# Checkpoint database settings
checkpoint_db: "outputs/checkpoints.db"

# Model cache directory
# Override with MODEL_CACHE_DIR environment variable
model_cache_dir: "~/.cache/storyboard-video/models"