# Generative Extend

### How It Works

1. **Attach a video** - Import or attach a video (up to 23 seconds)
2. **Select "Extend Generation"** - Choose from the model selector dropdown
3. **Optional prompt** - Describe how to continue the scene (prompt is optional)
4. **Generate** - Click send to extend your video by 7 seconds
5. **Import to Premiere** - Add the extended video to your timeline

<figure><img src="/files/ZYR79gB0UgWzigKQkpft" alt=""><figcaption></figcaption></figure>

### Key Features

#### Fixed Extension Duration

* **Always adds 7 seconds** - Extension duration is fixed at 7 seconds
* **Maximum total length** - Output is capped at 30 seconds
* **Input limit** - Input videos must be 23 seconds or less

#### Resolution and Quality

* **Output resolution:** 720p (fixed, regardless of input resolution)
* **Input resolution:** Supports 720p or 1080p input videos
* **Aspect ratios:** Supports 16:9 and 9:16 (auto-detected from input)

#### Audio Generation

* **Default:** Audio generation is enabled
* **Original audio preserved** - The original video's audio remains intact
* **Seamless transition** - Audio transitions naturally between original and extended portions

### Extend vs. Generate: Which to Use?

| Situation                                                    | Best Approach                                      |
| ------------------------------------------------------------ | -------------------------------------------------- |
| Your clip is too short and you want it to continue naturally | **Generative Extend** (this page)                  |
| You want new B-roll that doesn't continue an existing clip   | **Text-to-Video** or **Image-to-Video** generation |
| Your clip is over 23 seconds                                 | Trim in Premiere first, then extend                |
| You need 4K output                                           | Generate fresh — Extend outputs 720p max           |
| You want a completely different scene                        | Generate fresh — Extend continues what's there     |

### Use Cases

#### Lengthening Short Clips

Extend short clips to meet duration requirements:

* **Example:** 8-second clip → 15-second clip
* Perfect for social media content that needs specific lengths

#### Adding More Content

Continue scenes naturally:

* **Example:** A character walking → continues walking for 7 more seconds
* Great for extending action sequences or establishing shots

#### Creating Longer Videos

Chain multiple extensions:

* **Example:** 8s → 15s → 22s → 29s (approaching 30s limit)
* Each extension requires a new generation with the previously extended video

#### Scene Continuation

Describe how the scene should continue:

* **Example:** "The character continues walking and enters a building."
* An optional prompt helps guide the AI's continuation

### Writing Extension Prompts

#### When to Use Prompts

Prompts are **optional** but helpful for guiding the continuation:

✅ **Good Extension Prompts:**

```
The character continues walking down the street
```

```
The camera continues panning to reveal more of the landscape
```

```
The action continues with the character running faster
```

```
The scene transitions to show the character entering a building
```

#### What to Describe

Focus on **how the scene should continue**, not what already happened:

1. **Action continuation** - "Continues walking", "Keeps running", "Maintains the same pace"
2. **Camera movement** - "Camera continues panning", "Keeps zooming in", "Maintains the orbit"
3. **Scene development** - "Enters the building", "Reaches the destination", "Completes the action"
4. **Natural progression** - "The scene continues naturally", "Maintains the same style"

#### When to Skip Prompts

You can leave the prompt empty if:

* The scene should continue naturally without specific direction
* The AI's automatic continuation is sufficient
* You want the model to decide how to extend the scene

### Limitations and Requirements

#### Input Video Requirements

| Requirement       | Value              |
| ----------------- | ------------------ |
| **Max Duration**  | 23 seconds or less |
| **Min Duration**  | 1 second           |
| **Resolution**    | 720p or 1080p      |
| **Aspect Ratio**  | 16:9 or 9:16       |
| **Max File Size** | 200MB              |

#### Output Specifications

| Property               | Value                         |
| ---------------------- | ----------------------------- |
| **Extension Duration** | Fixed at 7 seconds            |
| **Max Total Duration** | 30 seconds                    |
| **Output Resolution**  | 720p (fixed)                  |
| **Aspect Ratio**       | Matches input (16:9 or 9:16)  |
| **Audio**              | Optional (enabled by default) |

#### Important Notes

⚠️ **Resolution Limitation:**

* Input videos can be 720p or 1080p
* **Output is always 720p**, even if the input is 1080p
* Consider this when planning your workflow

⚠️ **Duration Limits:**

* Input must be 23 seconds or less
* Output cannot exceed 30 seconds total
* If your video is already 24+ seconds, VEO Extend cannot be used

⚠️ **Chaining Extensions:**

* You can extend multiple times (8s → 15s → 22s → 29s)
* Each extension requires a new generation
* Each extension adds 7 seconds
* Stop before reaching 30 seconds total

### Workflow Tips

#### Best Practices

1. **Plan your extensions** - Know your target duration before starting
2. **Use descriptive prompts** - Guide the AI's continuation when needed
3. **Check resolution** - Be aware that the output will be 720p you can [upscale](/features/video-editing-tools/video-upscaling.md) after
4. **Chain carefully** - Track total duration when extending multiple times
5. **Test audio** - Try with and without audio to see what works best

#### Common Workflows

**Quick Extension:**

1. Attach video (≤23s)
2. Select Extend Generation
3. Generate (no prompt needed)
4. Import extended video

**Guided Extension:**

1. Attach video (≤23s)
2. Select Extend Generation
3. Enter continuation prompt
4. Configure audio settings
5. Generate
6. Review and import

**Multiple Extensions:**

1. Extend first time (8s → 15s)
2. Use an extended video as input
3. Extend again (15s → 22s)
4. Repeat until desired length (max 30s)

### Troubleshooting

#### "Video too long"

* **Problem:** The input video exceeds 23 seconds
* **Solution:** Trim your video to 23 seconds or less before extending

#### "Output resolution is lower."

* **Problem:** Input is 1080p but output is 720p
* **Solution:** This is expected behavior. VEO Extend outputs 720p only. Use upscaling tools after extension if needed.

#### "Can't extend further"

* **Problem:** Total duration would exceed 30 seconds
* **Solution:** Your video is already at or near the 30-second limit. Cannot extend further.

#### "Extension doesn't match."

* **Problem:** The extended portion doesn't continue naturally
* **Solution:** Add a descriptive prompt explaining how the scene should continue

#### "Audio doesn't match."

* **Problem:** Extended audio doesn't blend well
* **Solution:** Try generating with audio off, or provide a prompt describing the audio you want

***

**Next:** Learn about [Video Upscaling](/features/video-editing-tools/video-upscaling.md) to increase resolution after extension.


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