---
title: "FramePack"
description: "Stanford constant-memory long image-to-video. Integration verified; runner and official long-video demo still pending. HF license cards are pending. Artifact framepack.mp4."
modelId: "framepack"
pageSource: authored
---

FramePack is Stanford's **constant-memory** long image-to-video packer (ControlNet authors): input-frame context is packed into a **fixed-length** window so generation cost stays roughly constant as the clip grows, including minute-scale clips on modest VRAM. WorldFoundry vendors a minimal infer-only runtime under `worldfoundry/synthesis/visual_generation/framepack/framepack_runtime` and exposes `FramePackPipeline`. Integration is Verified. The **runner and official long-video demo are still pending**.

<ModelPaperFigures modelId="framepack" locale="en" />

Paper: [arXiv 2504.12626](https://arxiv.org/abs/2504.12626). Project: [lllyasviel.github.io/frame_pack_gitpage](https://lllyasviel.github.io/frame_pack_gitpage/). Code: [lllyasviel/FramePack](https://github.com/lllyasviel/FramePack). Public, non-gated weights: `lllyasviel/FramePackI2V_HY` and `lllyasviel/FramePack_F1_I2V_HY_20250503`. HF `cardData` did **not** expose a license — review before promotion. Catalog VRAM is unset.

<ModelCommandBuilder modelId="framepack" locale="en" />

## What it is for

Pack long video as next-frame chunks from a start image.

Launch `worldfoundry-eval run framepack`.

Score on [ChronoMagic-Bench](/docs/evaluation/benchmark-hub/chronomagic-bench) — long-horizon generation suite matching FramePack's long-video focus.

## Runtime contract

Required: `prompt` and `image`; artifacts: `framepack.mp4`.

| Knob | Default |
| --- | --- |
| Duration | **5** s |
| FPS | **30** |
| Steps | **25** per FramePack section |
| Latent window | **9** |
| CFG / GS / RS | **1.0** / **10.0** / **0.0** |
| Seed | **31337** |
| TeaCache | **on** |

Official in-tree runner defaults (the upstream UI quality recipe — not a GPU-validated long clip here):

## Run in WorldFoundry

Status: **Runner parity pending**. Unified environment `worldfoundry-unified-cu128` (Python 3.11, CUDA 12.8). Stage `lllyasviel/FramePackI2V_HY`, `lllyasviel/FramePack_F1_I2V_HY_20250503`, and `lllyasviel/FramePackI2V_HY` among others locally — missing files fail at load, nothing is downloaded. Run `worldfoundry-eval run framepack`. Catalog VRAM is unset.

<ModelRelatedRecipes modelId="framepack" locale="en" />