BerriAI/litellm · error · NotImplementedError

video edit is not supported for RunwayML

Error message

video edit is not supported for RunwayML

What it means

Capability stub in the RunwayML video config: video editing is not supported by RunwayML's current API, so the edit request/response transforms raise NotImplementedError instead of sending an invalid call.

Source

Thrown at litellm/llms/runwayml/videos/transformation.py:622

        raise NotImplementedError("video create character is not supported for RunwayML")

    def transform_video_get_character_request(self, character_id, api_base, litellm_params, headers):
        raise NotImplementedError("video get character is not supported for RunwayML")

    def transform_video_get_character_response(self, raw_response, logging_obj):
        raise NotImplementedError("video get character is not supported for RunwayML")

    def transform_video_edit_request(
        self,
        prompt,
        video_id,
        api_base,
        litellm_params,
        headers,
        extra_body=None,
        prefetched_source_data=None,
    ):
        raise NotImplementedError("video edit is not supported for RunwayML")

    def transform_video_edit_response(
        self,
        raw_response,
        logging_obj,
        custom_llm_provider=None,
        request_data=None,
    ):
        raise NotImplementedError("video edit is not supported for RunwayML")

    def transform_video_extension_request(
        self,
        prompt,
        video_id,
        seconds,
        api_base,
        litellm_params,
        headers,

View on GitHub (pinned to 77b7c6c40c)

Solutions

  1. RunwayML does not support video edit; use video generation instead.

Example fix

# call video generation rather than edit for runwayml.
Defensive patterns

Strategy: fallback

When it happens

Trigger: Triggered when attempting video edit, which RunwayML does not support.

Common situations: See trigger scenarios.

AI-assisted analysis of BerriAI/litellm@77b7c6c40c (2026-08-18). Data as JSON: /api/errors/59c44d976db547ec. Report an issue: GitHub.