The Seedance 1.5 Pro: FLF2V workflow is a powerful tool for creating seamless video transitions between two images. By leveraging the ByteDance and Seedance models, this workflow automatically generates a smooth transition video with synchronized audio, making it ideal for content creators who need to produce polished video content quickly. The core of the workflow involves the ByteDanceFirstLastFrameNode, which intelligently interpolates frames between the provided start and end images, ensuring a fluid motion that mimics natural video footage. This is coupled with audio synchronization features that align the visual transitions with corresponding sound elements, enhancing the overall viewing experience.
Technically, the workflow begins by loading the start and end frames using the LoadImage node. It then processes these images through the ByteDanceFirstLastFrameNode, which applies advanced interpolation techniques to generate intermediate frames. Finally, the SaveVideo node compiles these frames into a coherent video file, complete with synchronized audio. This process not only saves time but also ensures high-quality output, making it a valuable tool for video editors and digital marketers who require quick turnaround times without sacrificing quality.
API
Use this workflow from code
Every Comfy workflow is a JSON graph. The payload below is this workflow, exactly as ComfyUI runs it — fetch it from the URL, keep it in version control, or load it in ComfyUI and run it node by node.
GET https://comfy.org/workflows/download/042fbf5a6e42.jsonFetching workflow JSON…
Run it from Python or TypeScript with the Comfy SDK. The same code targets Comfy Cloud or a ComfyUI you host yourself — only the base URL changes.
# Install (beta)
pip install comfy-sdk # Python
npm i @comfyorg/sdk # TypeScript
# Run this workflow (Python)
from comfy_sdk import Comfy
client = Comfy(api_key="comfyui-...")
wf = client.workflows.from_file("workflow_api.json")
job = client.run(wf)
for output in job.get_outputs("<output-node-id>"):
output.to_file(output.name)The SDK takes a workflow in API format: open this workflow in ComfyUI and use File → Export Workflow (API). API access requires a Comfy Cloud plan with an API key. SDK docs · Get an API key
FAQ
