Comfy-Org/ComfyUI · error · ValueError

There is nothing to do: both upscaling and interpolation are

Error message

There is nothing to do: both upscaling and interpolation are disabled.

What it means

The Topaz Video Enhance node requires at least one operation: if upscaler_enabled is False AND interpolation_enabled is False it raises ValueError('There is nothing to do...') before touching the video. Running the node would upload and bill a job that changes nothing, so it refuses.

Source

Thrown at comfy_api_nodes/nodes_topaz.py:689

    @classmethod
    async def execute(
        cls,
        video: Input.Video,
        upscaler_enabled: bool,
        upscaler_model: str,
        upscaler_resolution: str,
        upscaler_creativity: str = "low",
        interpolation_enabled: bool = False,
        interpolation_model: str = "apo-8",
        interpolation_slowmo: int = 1,
        interpolation_frame_rate: int = 60,
        interpolation_duplicate: bool = False,
        interpolation_duplicate_threshold: float = 0.01,
        dynamic_compression_level: str = "Low",
    ) -> IO.NodeOutput:
        if upscaler_enabled is False and interpolation_enabled is False:
            raise ValueError("There is nothing to do: both upscaling and interpolation are disabled.")
        validate_container_format_is_mp4(video)
        src_width, src_height = video.get_dimensions()
        src_frame_rate = int(video.get_frame_rate())
        duration_sec = video.get_duration()
        src_video_stream = video.get_stream_source()
        target_width = src_width
        target_height = src_height
        target_frame_rate = src_frame_rate
        filters = []
        if upscaler_enabled:
            if "1080p" in upscaler_resolution:
                target_pixel_p = 1080
                max_long_side = 1920
            else:
                target_pixel_p = 2160
                max_long_side = 3840
            ar = src_width / src_height
            if src_width >= src_height:

View on GitHub (pinned to 1c6d8d45b3)

Solutions

1. Enable at least one of upscaler_enabled or interpolation_enabled.
2. If you intended a passthrough, remove the node from the workflow instead of running it with both off.
3. Check that the boolean widget values are actually wired (a disconnected/unevaluated input can arrive as False).

Example fix

// before: both disabled -> ValueError
video = topaz_video_enhance(video=v, upscaler_enabled=False, interpolation_enabled=False)
// after: enable interpolation
video = topaz_video_enhance(video=v, upscaler_enabled=False, interpolation_enabled=True)

if not upscaler_enabled and not interpolation_enabled:
    raise ValueError("enable at least one operation")  # fail before upload/billing
# or skip the node entirely in the workflow graph

When it happens

Trigger: Invoking the video enhance execute with both boolean toggles set to False (upscaler disabled and interpolation disabled).

Common situations: Workflows where a toggle was wired to a conditional that defaults to False; users testing connectivity with everything off; stale presets saved with both switches off.

Related errors

• Reference video {i} is too short: {dur:.1f}s. Minimum durati
• Total reference video duration is {total_video_duration:.1f}
• The maximum number of reference images allowed is 6.
• The maximum number of reference images is 7.
• Only one input image is supported.

AI-assisted analysis of Comfy-Org/ComfyUI@1c6d8d45b3 (2026-08-14). Data as JSON: /api/errors/b052823c172744fd. Report an issue: GitHub.