<h1 align="center">Happy Latent</h1>
<p align="center">
<a href="LICENSE">
<img src="https://img.shields.io/badge/License-GPL%203.0-b84a5b" alt="License: GPL-3.0" height="20">
</a>
</p>
<table width="100%">
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<td align="center">
<img
src="https://github.com/user-attachments/assets/f638820e-747c-4a80-8c0d-b9521c14797e"
width="100%"
alt="Happy Latent visual editor in ComfyUI"
>
</td>
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</table>
A visual editor for generating videos with LTX 2.5 in ComfyUI.
- Arrange scenes and adjust their duration on a timeline.
- Guide each scene with a prompt and optional first and last frame images.
- Choose generated audio, uploaded audio, or silence for each clip.
Install
ComfyUI Manager
- Open ComfyUI and click Manager.
- Open Custom Nodes Manager and search for HappyLatent.
- Select HappyLatent and click install.
ComfyUI CLI
comfy node install happylatent
Manual
Navigate to your custom_nodes directory then clone the repository.
git clone https://github.com/EricFillion/happylatent.git
Restart ComfyUI, then add the HappyLatentVideo node to your workflow. Generation requires the LTX 2.5 model, text encoder, video VAE, and audio VAE, which can be retrieved by running examples/starter/models.py.
You can find an example workflow in examples/starter/happylatent.json.
Examples
Image-to-Video
<table width="100%">
<tr>
<th width="45%">Generated Video</th>
<th width="55%">Node</th>
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<tr>
<td width="45%" valign="top">
<video src="https://github.com/user-attachments/assets/19d1b8d9-804c-42ba-a750-45625e7febd8" width="100%" controls></video>
</td>
<td width="55%" valign="top">
<a href="https://github.com/user-attachments/assets/938c0386-d3db-4fac-a207-e377ea3a8845">
<img src="https://github.com/user-attachments/assets/938c0386-d3db-4fac-a207-e377ea3a8845" width="100%" alt="HappyLatent image-to-video setup">
</a>
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Multiple Scenes
<table width="100%">
<tr>
<th width="45%">Generated video</th>
<th width="55%">Node</th>
</tr>
<tr>
<td width="45%" valign="top">
<video src="https://github.com/user-attachments/assets/1e89b81d-973b-4d67-8282-0a50ded70ac6" width="100%" controls></video>
</td>
<td width="55%" valign="top">
<a href="https://github.com/user-attachments/assets/971f91a8-af37-4a11-b2cc-77b0fd69b441">
<img src="https://github.com/user-attachments/assets/971f91a8-af37-4a11-b2cc-77b0fd69b441" width="100%" alt="HappyLatent multiple-scene setup">
</a>
</td>
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First and Last Frames
<table width="100%">
<tr>
<th width="45%">Generated Video</th>
<th width="55%">Node</th>
</tr>
<tr>
<td width="45%" valign="top">
<video src="https://github.com/user-attachments/assets/e1a3cc83-6826-47fa-bbc0-6669028a93c3" width="100%" controls></video>
</td>
<td width="55%" valign="top">
<a href="https://github.com/user-attachments/assets/9f6de7d8-0c13-4136-a321-564f36a033d5">
<img src="https://github.com/user-attachments/assets/9f6de7d8-0c13-4136-a321-564f36a033d5" width="100%" alt="HappyLatent first-and-last-frame setup">
</a>
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