This workflow turns two still images into a single, fluid video transition using the LTX-2.5 image-to-video API. Two LoadImage nodes supply your start and end reference frames, which are passed into LtxApi25ImageToVideo. The node blends structural cues from both inputs to synthesize an in-between sequence that morphs from the first image toward the second, producing a natural-looking transition, reveal, or morph. Finally, SaveVideo encodes the generated frames to a video file you can review or drop into an edit.
Technically, the LtxApi25ImageToVideo node makes an API call to the LTX-2.5 backend, which analyzes both images, aligns major features, and interpolates motion across a specified duration and frame rate. Because the processing happens remotely, you’ll typically configure an API key/endpoint in the node and choose key parameters like output length and FPS. Keeping both input images similar in aspect ratio, framing, and subject scale helps the model establish a clean “path” between them, reducing artifacts and ensuring a smoother morph. SaveVideo then writes the result to disk at your chosen frame rate, ready for playback or further editing.
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/527ecf1f2eb4.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
