n8n_ai_video_generator

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n8n_ai_video_generator

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# N8N VEO Video Generator
- Scheduled to create AI videos using Veo3, save video file on Google Drive and update Google Sheets about the new video created.
- You can check it out by importing `Veo3_Video_Generator.json` into n8n.

## Output

![Output](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/output_video.png)

- It has successfully generated the video, saved the video file in google drive, and updated the google sheets with the link to the file.

## Nodes

![nodes](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/initial.png)

- Trigger
    - Schedule Trigger
- AI Agent
    - Idea Generator
    - Video Prompt Generator
- Http Request Nodes
    - Create Video
    - Check Completion
    - Download Video
- Google Drive
    - Upload file
    - Share file
- Set, Wait, If nodes

## Steps
- Create a trigger node.

![trigger](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/trigger.png)

- Attach an AI Agent node that will act as an Idea Generator with Structured Output Parser and Think Tool.

![idea generator](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/idea_generator.png)

- Attach another AI Agent node that will generate the video prompt.

![video prompt](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/video_prompt_generator.png)

![output](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/video_prompt.png)

- Go to Google One -> Google AI to start your Google AI Pro subscription free trial which will give you access to `Veo 3` in Gemini.
- Go to Google AI studio to create your API key, and also to Google Cloud Console to enable Billing.
- Attach an `Http Request` node after the Video Prompt Generator node and use the `Gemini API` documentation to find the Endpoints so choose REST among the options (python, javascript ...) and copy the curl command to import into the Http Request node. Don't forget to turn on Expression for the body instead of sending fixed since `{{ JSON.stringify($json.output) }}` should be parsed.

![doc](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/gemini_doc.png)

```
    curl -s "https://generativelanguage.googleapis.com/v1beta/models/veo-3.0-generate-preview:predictLongRunning" \
  -H "x-goog-api-key: YOUR_API_KEY_HERE" \
  -H "Content-Type: application/json" \
  -X POST \
  -d '{
    "instances": [
      {
        "prompt": {{ JSON.stringify($json.output) }}
      }
    ]
  }'
    ```

![create video request](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/post_request.png)

- Check completion by sending a get request using the `operation name` from the response of the post request which will be in `{{ $json.name }}`.

```
    curl -s -H "x-goog-api-key: YOUR_API_KEY_HERE" \
    "https://generativelanguage.googleapis.com/v1beta/{{ $json.name }}"

```

![check completion](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/check_request.png)

- After the get request node, check if `{{ $json.done }}` is `true` using an If node.
    
    ![if](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/if_done.png)
    
- If completed (true branch), you need to download the video file so attach another Http Request node with a Get request to a URL provided by the `Check completion` node.

![download1](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/download_full.png)

- But before downloading the file, in order to name it properly, attach a `Set` node that adds a `fileName` field in the data by slicing the caption to a maximum of 50 characters. 
    
    ![file name](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/create_file_name.png)

- Then use the file name by adding response option to the Download node and apply file name in `Put Output in Field` field.

- Allow `Redirects` option as adviced by the Gemini Api documentation.

![download2](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/download_video_options.png)

- After receiving the file, you now have to save it in Google Drive
    - Get your OAuth credentials by enabling `Google Drive Api` in Google Cloud Console and create or use your existing credentials. 
    - You will use a `Upload file` node from Google Drive. Create a folder that you wish to save the videos in and select the folder.
    
    ![save](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/save_to_drive.png)

![saved](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/actually_saved.png)

- In order to actually save the link for the file in a google sheet and later have no issues with permissions, you have to share the file or make it publicly accessible by it's link. Add a `Share file` node from `Google Drive` and add permission `Reader` for `Anyone`.

![share](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/share_link.png)

- Create a new google sheet and add a google sheet `Append Row` node to save the Google Drive URL (`webViewLink`) and other information about the video.

![new sheet](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/new_sheet.png)

![sheets node](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/sheets.png)

![sheet node](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/sheet_row.png)

- However, if the file is not ready and `$json.done` is false, you should add a `Wait` node for the false branch of the If node which then loops back to the `Check completion` node.

![wait](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/wait.png)

![waiting](https://raw.githubusercontent.com/Natan-Asrat/n8n_ai_video_generator/main/screenshots/waiting...png)

## Contact
 - LinkedIn: [Natan Asrat](https://linkedin.com/in/natan-asrat)
 - Gmail: nathanyilmaasrat@gmail.com
 - Telegram: [Natan Asrat](https://t.me/fail_your_way_to_success)
 - Youtube: [Natville](https://www.youtube.com/@natvilletutor)

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