fix deinterlace

tests/unit/test_ffx_controller.py

@@ -161,6 +161,55 @@ class FfxControllerTests(unittest.TestCase):
             any(token.startswith("ENCODING_PRESET=") for token in commands[1])
         )
 
+    def test_vp9_run_job_applies_identical_video_filters_to_both_passes(self):
+        context = self.make_context(VideoEncoder.VP9)
+        target_descriptor, source_descriptor = self.make_media_descriptors()
+        controller = FfxController(context, target_descriptor, source_descriptor)
+        commands = []
+
+        with (
+            patch.object(
+                controller,
+                "executeCommandSequence",
+                side_effect=lambda command: commands.append(command) or ("", "", 0),
+            ),
+            patch("ffx.ffx_controller.os.path.exists", return_value=False),
+        ):
+            controller.runJob(
+                "input.mkv",
+                "output.webm",
+                targetFormat="webm",
+                chainIteration=[
+                    {
+                        "identifier": "quality",
+                        "parameters": {"quality": 27},
+                    },
+                    {
+                        "identifier": "nlmeans",
+                        "parameters": {},
+                        "tokens": ["nlmeans=s=2.8"],
+                    },
+                    {
+                        "identifier": "bwdif",
+                        "parameters": {},
+                        "tokens": ["bwdif=mode=1"],
+                    },
+                ],
+                cropArguments={
+                    "output_width": 704,
+                    "output_height": 576,
+                    "x_offset": 8,
+                    "y_offset": 0,
+                },
+            )
+
+        self.assertEqual(2, len(commands))
+        expectedFilterChain = (
+            "crop=704:576:8:0, nlmeans=s=2.8, bwdif=mode=1"
+        )
+        self.assert_token_pair(commands[0], "-vf", expectedFilterChain)
+        self.assert_token_pair(commands[1], "-vf", expectedFilterChain)
+
     def test_av1_run_job_emits_file_level_quality_and_preset_metadata(self):
         context = self.make_context(VideoEncoder.AV1)
         target_descriptor, source_descriptor = self.make_media_descriptors()