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18 changes: 18 additions & 0 deletions docs.json
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"pages": [
"tutorials/partner-nodes/sonilo/video-to-music"
]
},
{
"group": "Topaz",
"pages": [
"tutorials/partner-nodes/topaz/astra-2"
]
}
]
}
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"pages": [
"zh/tutorials/partner-nodes/sonilo/video-to-music"
]
},
{
"group": "Topaz",
"pages": [
"zh/tutorials/partner-nodes/topaz/astra-2"
]
}
]
}
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"pages": [
"ja/tutorials/partner-nodes/sonilo/video-to-music"
]
},
{
"group": "Topaz",
"pages": [
"ja/tutorials/partner-nodes/topaz/astra-2"
]
}
]
}
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---
title: "Astra 2 - クリエイティブ拡散モデルによる動画アップスケーリング"

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description: "初めての方向けに Astra 2 の役割を説明し、ComfyUI でのクリエイティブ動画アップスケールと制御についてまとめます。"

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sidebarTitle: "Astra 2"
---

import ReqHint from "/snippets/ja/tutorials/partner-nodes/req-hint.mdx";
import UpdateReminder from "/snippets/ja/tutorials/update-reminder.mdx";

GenAI 動画向けに、ディテールと質感を補いながらクリエイティブに強化できます。

## Astra 2 とは

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**初めての方へ:** **AI 生成やスタイライズ動画**向けの強化モデルです。単純アップスケールは拡大+シャープが中心ですが、Astra 2 はぼやけた部分に**妥当なディテールや質感を足す**用途です。

## モデル概要

Astra 1 より、ディテールやスタイルの出し方を細かく寄せられます(創造性・シャープネス、任意の**説明的**プロンプト—手順書ではなく)。スタイライズ/GenAI、ワイドやディテール薄めのカット、質感が足りず平坦に見える素材と相性がよいです。

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## 主な特徴

- **質感・ディテールの追加** — シャープ化だけではない。
- **見た目の誘導** — 創造性・シャープネス・任意プロンプト。
- **スタイライズ/ワイド** — 推論で足りない情報を補う場面向け。

## ComfyUI で

**Topaz Video Enhance** を使う。**Topaz Video Enhance (Legacy)** には **Astra 2** がありません。Upscaler を **Astra 2**、解像度を **FullHD** または **4K**、入力は **MP4** のみ。

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**Prompt** あり: 最大 **450** フレーム(30fps で約 15 秒)。なし: 最大 **9000** フレーム。**Sharp** / **Realism** は詳細オプション。

<ReqHint/>
<UpdateReminder/>

## サンプルワークフロー

**動画の読み込み** → **Topaz Video Enhance** → **動画の保存**。開いたあと Upscaler が別モデルなら **Astra 2** に切り替え。

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<CardGroup cols={2}>
<Card title="Comfy Cloud で試す" icon="cloud" href="https://cloud.comfy.org/?template=api_topaz_astra2&utm_source=docs">
Comfy Cloud ですぐにワークフローを開けます。
</Card>
<Card title="ワークフローをダウンロード" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/api_topaz_astra2.json">
ローカルの ComfyUI 用に JSON をダウンロードします。
</Card>
</CardGroup>

## 関連リンク

- [ComfyUI での動画アップスケーリング](/ja/tutorials/utility/video-upscale) — アップスケール手法選択ガイド。
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---
title: "Astra 2 - Creative diffusion video upscaling"

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description: "What Astra 2 does for your videos in ComfyUI, plus creative upscaling with control over detail and style."

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sidebarTitle: "Astra 2"
---

import ReqHint from "/snippets/tutorials/partner-nodes/req-hint.mdx";
import UpdateReminder from "/snippets/tutorials/update-reminder.mdx";

Enhanced creative upscaling for GenAI video, with advanced control over detail and style.

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## What is Astra 2?

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**If you're new here:** Astra 2 targets **AI-generated and stylized video**. Plain upscaling mostly enlarges and sharpens existing pixels; Astra 2 can **add plausible new detail and texture** where the source is soft, so the clip feels richer—not only bigger.

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## Model overview

It builds on Astra 1 with clearer control over how detail and stylization are produced (creativity, sharpness, optional **descriptive** prompts—not step lists). Strong fits: stylized/GenAI footage, wides and sparse-detail scenes, and footage that looks overly smooth until texture is restored.

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## Key capabilities

- **Adds texture and detail** — Not only sharpening.
- **Steerable look** — Creativity, sharpness, optional prompt guidance.
- **Stylized & wides** — Where inferred detail matters.

## In ComfyUI

Use **Topaz Video Enhance**. **Topaz Video Enhance (Legacy)** does not offer **Astra 2**. Set upscaler to **Astra 2**, resolution to **FullHD** or **4K**; input must be **MP4**.

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Optional **Prompt**: max **450** frames (~15 s @ 30 fps). Empty prompt: up to **9000** frames. Expand advanced controls for **Sharp** and **Realism** when needed.

<ReqHint/>
<UpdateReminder/>

## Example workflow

**Load Video** → **Topaz Video Enhance** → **Save Video**. After opening the template, pick **Astra 2** on the upscaler if another preset is selected.

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<CardGroup cols={2}>
<Card title="Run on Comfy Cloud" icon="cloud" href="https://cloud.comfy.org/?template=api_topaz_astra2&utm_source=docs">
Open the workflow instantly on Comfy Cloud.
</Card>
<Card title="Download workflow" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/api_topaz_astra2.json">
Download the workflow JSON for local ComfyUI.
</Card>
</CardGroup>

## Related

- [Video upscaling in ComfyUI](/tutorials/utility/video-upscale) — guidance on choosing an upscaling approach.

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---
title: "Astra 2 - 创意扩散视频放大"

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description: "Astra 2 模型的用途与特点,以及在 ComfyUI 中通过 Topaz Video Enhance 使用的要点。"

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sidebarTitle: "Astra 2"
---

import ReqHint from "/snippets/zh/tutorials/partner-nodes/req-hint.mdx";
import UpdateReminder from "/snippets/zh/tutorials/update-reminder.mdx";

Astra 2 是 Topaz 提供的 **创意扩散类视频放大模型**,主要服务于 **生成式 AI 产出或明显风格化** 的镜头:在保持时间与语义连贯的前提下,对画面中原本稀疏、平滑或缺乏微观结构的区域 **推断并补充合理的纹理与细节**,并可输出至 **FullHD(1080p)或 4K**。与传统偏重尺寸拉伸与锐化的放大相比,它更侧重「补信息与质感」,并可通过 **创意强度**、**锐化** 以及可选的 **描述性提示词**(概括画面氛围或质感,而非操作指令)在一定程度上收敛成片风格——适用于希望在可控偏移内提升信息量与观感层次的剪辑与成片流程。

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## 模型概述

相较 Astra 1,对细节合成与风格化过程的 **可调维度更多**。适用于 GenAI / 风格化素材、广角与人群等大场面、以及观感偏「塑料感」或偏平滑但 **需要可信纹理** 的镜头。

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## 主要能力

- **补质感与细节** — 不仅是锐化。
- **可调观感** — 创意、锐化、可选提示词引导。
- **风格化 / 广角** — 适合需要推断补全信息的画面。

## 在 ComfyUI 里

使用 **Topaz Video Enhance**。**Topaz Video Enhance (Legacy)** **没有** Astra 2。将放大模型设为 **Astra 2**,输出 **1080p** 或 **4K**,输入须为 **MP4**。

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填写 **Prompt** 时最多 **450** 帧(30fps 约 15 秒);留空最多 **9000** 帧。**Sharp**、**Realism** 在高级选项里。

<ReqHint/>
<UpdateReminder/>

## 示例工作流

**加载视频** → **Topaz Video Enhance** → **保存视频**。打开模板后若默认不是本模型,把放大模型改成 **Astra 2**。

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<CardGroup cols={2}>
<Card title="在 Comfy Cloud 上运行" icon="cloud" href="https://cloud.comfy.org/?template=api_topaz_astra2&utm_source=docs">
在 Comfy Cloud 上立即打开该工作流。
</Card>
<Card title="下载工作流" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/api_topaz_astra2.json">
下载可在本地 ComfyUI 使用的 workflow JSON。
</Card>
</CardGroup>

## 相关链接

- [ComfyUI 视频放大](/zh/tutorials/utility/video-upscale) — 视频放大方案选择指南。
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