VideoFrameNode (ComfyUI)

Custom node for ComfyUI that loads an MP4 video and outputs two images:

• first frame
• last frame

Install

1. Copy/clone this repo folder into your ComfyUI:

   • ComfyUI/custom_nodes/VideoFrameNode (this repo root is the node folder)

2. Install dependencies:

   • pip install -r requirements.txt

   Note about torch / Pylance

    This node uses `torch` because ComfyUI images are `torch.Tensor`. If Pylance shows `Import "torch" could not be resolved`, install dependencies from `requirements.txt`.
   

3. Restart ComfyUI.

Publishing / Compatibility notes

• This repo includes pyproject.toml for Comfy Registry / ComfyUI-Manager publishing. Fill in PublisherId and Repository before publishing.
• Versioning: follow SemVer. Changing node identifiers, input names, output names, or types should be treated as a breaking change.
• Security: no eval/exec, no runtime pip install from within the node.
• API-mode: the core node works in API mode, but the drag&drop upload feature is UI-only (it adds a custom upload route + frontend JS).

Publish to Registry (GitHub Actions)

1. Create a Registry publishing API key and add it as a GitHub repo secret named REGISTRY_ACCESS_TOKEN.
2. Ensure pyproject.toml has the correct PublisherId and Repository.
3. Bump version in pyproject.toml and push to main.

Node

• Name: Video: First & Last Frame
• Input: video (filename in ComfyUI/input or an absolute path)
• Outputs: FIRST_FRAME, LAST_FRAME (ComfyUI IMAGE)

Drag & drop workflow

1. Drag & drop your .mp4 directly onto the node.
2. The file is uploaded into ComfyUI/input and the node input is set to the uploaded filename.
3. The node displays a preview (first frame) after execution.