{"schema_version": "fasth3-inference-contract-v1", "checkpoint_step": 300, "task": "t2av",
 "dmd_denoising_steps": [999, 874, 749, 624, 500, 375, 250, 125], "num_inference_steps": 9,
 "transformer_forwards": 8, "video_scheduler_shift": 10.0, "audio_scheduler_shift": 3.0, "guidance_scale": 1.0,
 "attention_backend": "VIDEO_SPARSE_ATTN_H3", "vsa_sparsity": 0.8, "vsa_tile_size": 64}