fix(gemini-video): inherit BaseVideoConfig to enable async content response (#16875)

This fix addresses the same issue that was resolved for OpenAI video in PR #16708.

The GeminiVideoConfig class was importing BaseVideoConfig only within TYPE_CHECKING,
causing it to be 'Any' at runtime. This prevented the async_transform_video_content_response
method from being available during video content downloads.

Changes:
- Moved BaseVideoConfig import from TYPE_CHECKING to top-level imports
- Added test_gemini_video_config_has_async_transform() to verify the fix
- Ensures GeminiVideoConfig properly inherits BaseVideoConfig at runtime

Fixes video generation errors for Gemini Veo models:
'GeminiVideoConfig' object has no attribute 'async_transform_video_content_response'

litellm/llms/gemini/videos/transformation.py

@@ -15,17 +15,16 @@ from litellm.images.utils import ImageEditRequestUtils
 import litellm
 from litellm.types.llms.gemini import GeminiLongRunningOperationResponse, GeminiVideoGenerationInstance, GeminiVideoGenerationParameters, GeminiVideoGenerationRequest
 from litellm.constants import DEFAULT_GOOGLE_VIDEO_DURATION_SECONDS
+from litellm.llms.base_llm.videos.transformation import BaseVideoConfig
+
 if TYPE_CHECKING:
     from litellm.litellm_core_utils.litellm_logging import Logging as _LiteLLMLoggingObj
-    from ...base_llm.videos.transformation import BaseVideoConfig as _BaseVideoConfig
     from ...base_llm.chat.transformation import BaseLLMException as _BaseLLMException
 
     LiteLLMLoggingObj = _LiteLLMLoggingObj
-    BaseVideoConfig = _BaseVideoConfig
     BaseLLMException = _BaseLLMException
 else:
     LiteLLMLoggingObj = Any
-    BaseVideoConfig = Any
     BaseLLMException = Any
 
 

tests/test_litellm/test_video_generation.py

@@ -14,6 +14,7 @@ import litellm
 from litellm.types.videos.main import VideoObject, VideoResponse
 from litellm.videos.main import video_generation, avideo_generation, video_status, avideo_status
 from litellm.llms.openai.videos.transformation import OpenAIVideoConfig
+from litellm.llms.gemini.videos.transformation import GeminiVideoConfig
 from litellm.llms.custom_httpx.llm_http_handler import BaseLLMHTTPHandler
 from litellm.cost_calculator import default_video_cost_calculator
 from litellm.litellm_core_utils.litellm_logging import Logging as LitellmLogging
@@ -813,5 +814,12 @@ def test_openai_video_config_has_async_transform():
     cfg = OpenAIVideoConfig()
     assert callable(getattr(cfg, "async_transform_video_content_response", None))
 
+
+def test_gemini_video_config_has_async_transform():
+    """Ensure GeminiVideoConfig exposes async_transform_video_content_response at runtime."""
+    cfg = GeminiVideoConfig()
+    assert callable(getattr(cfg, "async_transform_video_content_response", None))
+
+
 if __name__ == "__main__":
     pytest.main([__file__])