[bugfix] Pass disable_autocast through to FastVideoArgs (#2056)

docs-site/islands/Cookbook.tsx

@@ -878,9 +878,7 @@ function configurableModes(index: Index | undefined, modelId: string): string[]
   if (!deployments?.length) return undefined;
   const servingOnly = (deployment: { runtime: string; workload: string }) =>
     deployment.runtime.includes("mlx") || deployment.runtime.includes("streaming") || deployment.workload === "v2v";
-  return deployments.some((deployment) => !servingOnly(deployment))
-    ? ["Python SDK", "CLI", "Serving"]
-    : ["Serving"];
+  return deployments.some((deployment) => !servingOnly(deployment)) ? ["Python SDK", "CLI", "Serving"] : ["Serving"];
 }
 
 /** Mirrors the source recipe page: Python SDK and CLI always, serving when a recipe declares it. */

fastvideo/fastvideo_args.py

@@ -1030,6 +1030,8 @@ class FastVideoArgs:
             kwargs['workload_type'] = WorkloadType.from_string(kwargs['workload_type'])
 
         kwargs['pipeline_config'] = PipelineConfig.from_kwargs(kwargs)
+        # PipelineConfig also has a disable_autocast field and pops it from kwargs, but the stages read this one.
+        kwargs.setdefault('disable_autocast', kwargs['pipeline_config'].disable_autocast)
         kwargs['preprocess_config'] = PreprocessConfig.from_kwargs(kwargs)
         # Filter to only FastVideoArgs dataclass fields — pipeline-specific CLI
         # args live in PipelineConfig and must not be forwarded to the

fastvideo/tests/api/test_compat_translation.py

@@ -233,3 +233,12 @@ def _stub_fastvideo_args_from_kwargs(monkeypatch):
             self.kwargs = kw
 
     monkeypatch.setattr(fva.FastVideoArgs, "from_kwargs", _Captured)
+
+
+def test_disable_autocast_reaches_fastvideo_args(monkeypatch) -> None:
+    """``PipelineConfig.from_kwargs`` pops ``disable_autocast`` too; the denoising stages read the FastVideoArgs copy."""
+    from fastvideo import registry
+    monkeypatch.setattr(registry, "get_pipeline_config_cls_from_name", lambda model_path: None)
+    for value in (True, False):
+        config = legacy_from_pretrained_to_config("/models/any", {"disable_autocast": value})
+        assert generator_config_to_fastvideo_args(config).disable_autocast is value