diff --git a/tests/components/conftest.py b/tests/components/conftest.py
index 1ebcc864b4b..adf79a2ef96 100644
--- a/tests/components/conftest.py
+++ b/tests/components/conftest.py
@@ -91,3 +91,12 @@ def tts_mutagen_mock_fixture():
     from tests.components.tts.common import tts_mutagen_mock_fixture_helper
 
     yield from tts_mutagen_mock_fixture_helper()
+
+
+@pytest.fixture(scope="session", autouse=True)
+def prevent_ffmpeg_subprocess() -> Generator[None, None, None]:
+    """Prevent ffmpeg from creating a subprocess."""
+    with patch(
+        "homeassistant.components.ffmpeg.FFVersion.get_version", return_value="6.0"
+    ):
+        yield