Seedance 2 5 Image To Video

# Seedance 2.5 Image to Video

[runcomfy.com](https://www.runcomfy.com/?utm_source=skills.sh&utm_medium=skill&utm_campaign=seedance-2-5-image-to-video&utm_content=home) · [Seedance 2.5 Image to Video](https://www.runcomfy.com/models/bytedance/seedance-2.5/image-to-video?utm_source=skills.sh&utm_medium=skill&utm_campaign=seedance-2-5-image-to-video&utm_content=bytedance-seedance-2.5-image-to-video) · [GitHub](https://github.com/genmedia-labs/skills/tree/main/seedance-2-5-image-to-video)

ByteDance **Seedance 2.5 Image to Video (720p)** turns **one still image** into a 4–30 second cinematic clip with optional synchronized native audio, hosted on the **RunComfy Model API**. The output aspect ratio follows your input image.

```bash npx skills add genmedia-labs/skills --skill seedance-2-5-image-to-video -g ```

## When to pick this model (vs siblings)

This page is the **single-image path**. It has no aspect-ratio control and no multi-reference input — you give it one image and a motion prompt, and it animates that frame. That narrowness is the point: nothing competes with the source still for identity, wardrobe, or composition.

| You want | Use | |---|---| | Animate one still, keep subject and framing intact | **Seedance 2.5 Image to Video 720p** (this skill) | | Native speech / SFX / music generated in the same pass | **Seedance 2.5 Image to Video 720p** (`generate_audio: true`) | | A single continuous shot up to 30 seconds | **Seedance 2.5 Image to Video 720p** | | Cheaper, faster drafts before the final render ($0.17/s) | [Seedance 2.5 Image-to-Video 480p](https://www.runcomfy.com/models/bytedance/seedance-2.5/image-to-video/480p?utm_source=skills.sh&utm_medium=skill&utm_campaign=seedance-2-5-image-to-video&utm_content=bytedance-seedance-2.5-image-to-video-480p) | | Multiple image / video / audio references in one shot, plus an aspect-ratio control | [Seedance 2.5 Reference-to-Video](https://www.runcomfy.com/models/bytedance/seedance-2.5/reference-to-video?utm_source=skills.sh&utm_medium=skill&utm_campaign=seedance-2-5-image-to-video&utm_content=bytedance-seedance-2.5-reference-to-video) | | No image at all — generate from a prompt only | [Seedance 2.5 Text-to-Video](https://www.runcomfy.com/models/bytedance/seedance-2.5/text-to-video?utm_source=skills.sh&utm_medium=skill&utm_campaign=seedance-2-5-image-to-video&utm_content=bytedance-seedance-2.5-text-to-video) | | Bridge a defined start frame and end frame | [Seedance 2.5 First & Last Frame](https://www.runcomfy.com/models/bytedance/seedance-2.5/first-last-frame?utm_source=skills.sh&utm_medium=skill&utm_campaign=seedance-2-5-image-to-video&utm_content=bytedance-seedance-2.5-first-last-frame) | | Lip-sync driven by an audio track you already have | Wan 2.7 (`audio_url`) | | A different general-purpose i2v model | HappyHorse 1.0 image-to-video |

If the user said "Seedance 2.5 image to video", "animate this photo with Seedance", or handed you one image plus a motion description, route here.

## Prerequisites

1. **RunComfy CLI** — `npm i -g @runcomfy/cli` 2. **RunComfy account** — `runcomfy login` opens a browser device-code flow. 3. **CI / containers** — set `RUNCOMFY_TOKEN=<token>` instead of `runcomfy login`. 4. **A publicly reachable image URL** — the model server fetches it, so no login-gated or bot-blocked hosts. Recommended ceiling is 50 MB (roughly 4K).

## Endpoint + input schema

### `bytedance/seedance-2.5/image-to-video/720p`

| Field | Type | Required | Default | Notes | |---|---|---|---|---| | `prompt` | string | yes | — | How the subject and camera move, plus any audio. Chinese ~≤500 characters or English ~≤1000 words recommended. | | `image` | string (URL) | yes | — | The still to animate. jpeg, png, webp, bmp, tiff, gif. Anchors identity and sets the output aspect ratio. | | `duration` | integer | no | `5` | 4–30 seconds, whole-second steps. | | `generate_audio` | boolean | no | `true` | Synchronized speech, sound effects, and music in the same pass. Set `false` for silent video. |

That is the complete schema. There is **no** `aspect_ratio`, **no** `resolution` (fixed 720p on this page), **no** `seed`, and **no** multi-image input. Passing extra fields is a schema mismatch.

## How to invoke

**Default (5 s, audio on):**

```bash runcomfy run bytedance/seedance-2.5/image-to-video/720p \ --input '{ "prompt": "<how the subject and camera move>", "image": "https://.../still.png" }' \ --output-dir <absolute/path> ```

**Longer single take, silent:**

```bash runcomfy run bytedance/seedance-2.5/image-to-video/720p \ --input '{ "prompt": "The model turns slowly toward camera and lifts the bottle into the key light; slow push-in, shallow depth of field, no text, no watermark.", "image": "https://.../packshot.jpg", "duration": 12, "generate_audio": false }' \ --output-dir <absolute/path> ```

**Spoken line with in-pass audio:**

```bash runcomfy run bytedance/seedance-2.5/image-to-video/720p \ --input '{