WAN StartEndFrame Guide (Patreon)

This guide walks you through the step-by-step process of generating a video clip using the configuration UI. The workflow creates a short animation from a start frame, an end frame, and a prompt, by generating several intermediate frames to create a smooth transition between the two images.

🎨 Workflow Sections:

🟡 Important Notes ⚪ Input / Output / Model Loaders 🟢 Prompt / Conditioning 🔴 Latent / Sampling

Installation:

Download the .json file and drag and drop it into your ComfyUI window. Install the missing custom nodes via the manager and restart ComfyUI.

Start Frame

Start by adding your start image in the “Start Frame” section and your end image in the “End Frame” section. These two images define the beginning and end of your video clip.

WanVideo Cliplength & Start - End Ratio

Next, use the “num_frames” setting to define the total length of your clip — that is, how many frames will be generated in between. The “ratio” parameter controls how the transition is distributed: a value of 0.5 creates an even blend between start and end. A value below 0.5 means the start frame will linger longer, while a value above 0.5 keeps the end frame visible for a greater portion of the clip.

Prompt

In the “Prompt” field, describe what happens in the scene. Think of the prompt as a mini story that unfolds over the duration of the clip. For example, describe what the character is doing at the start, how the transition plays out, and where they end up. This kind of narrative prompt helps define a clear and coherent structure for the video.

WanVideo

In the final step, the video is sampled. Make sure to set the number of sampling steps to 30 in order to achieve a quality result.