When training i2v models without specifying image_column, automatically extract
and use first frames from training videos as conditioning images. This includes:
- Add load_images_from_videos() utility function to extract and cache first frames
- Update BaseI2VDataset to support auto-extraction when image_column is None
- Add validation and warning message in Args schema for i2v without image_column
The first frames are extracted once and cached to avoid repeated video loading.
- Add validation to ensure (frames - 1) is multiple of 8
- Add specific resolution check (480x720) for cogvideox-5b models
- Add error handling for invalid resolution format
- Add field validators for model type and validation settings
- Implement command line argument parsing with argparse
- Add type hints and documentation for training parameters
- Support configuration of model, training, and validation parameters
Add Pydantic models to handle:
- CLI arguments and configuration (Args)
- Model components and pipeline (Components)
- Training state and parameters (State)
