Instagram動画をフォームトリガーでGoogle Driveにダウンロードし、テーブルに記録

• •Google Drive API認証情報
• •ターゲットAPIの認証情報が必要な場合あり
• •Google Sheets API認証情報

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        "content": "## 🟢 **1. On form submission**\n- **Purpose:** Acts as the trigger for the workflow.  \n- **Functionality:** Displays a form with a single field (`URL`) where users can enter the instagram video link.  \n- **Output:** Passes the entered URL to the next node for processing."
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        "content": "## 🌐 **2.Instagram Downloader API Request**\n- **Purpose:** Fetch downloadable MP4 link.  \n- **Functionality:** Sends a `POST` request to **Instagram Video Downloader API**, passing the URL from the form.  \n- **Output:** Receives a JSON response containing downloadable media links.\n"
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        "content": "## 🔍 **3. If**\n- **Purpose:** Check for API errors.  \n- **Functionality:** Evaluates if the response contains an `error` field.  \n- **Output:** \n  - ✅ **True Path:** Proceeds to download the MP4.  \n  - ❌ **False Path:** Goes to error handling (Wait + Sheets logging).\n"
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        "content": "## ⬇️ **4. MP4 Downloader**\n- **Purpose:** Download the video file.  \n- **Functionality:** Uses the media URL from the previous API response to download the MP4 video.  \n- **Output:** Stores the raw MP4 binary for upload.\n\n-"
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        "content": "## ☁️ **5. Upload To Google Drive**\n- **Purpose:** Store video in Google Drive.  \n- **Functionality:** Uploads the downloaded MP4 into the specified Drive folder.  \n- **Output:** Returns a file ID for the uploaded file.\n"
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        "content": "## 🔑 **6. Google Drive Set Permission**\n- **Purpose:** Make the file publicly accessible.  \n- **Functionality:** Sets file permissions to `Anyone with the link can view`.  \n- **Output:** Provides a sharable `webViewLink`.\n"
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        "content": "## 📄 **7. Google Sheets**\n- **Purpose:** Log successful conversions.  \n- **Functionality:** Appends a row with:\n  - `URL` → Original Instagram link  \n  - `Drive_URL` → Sharable Google Drive MP4 link  \n- **Output:** Saves a permanent log of successful downloads."
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        "content": "## ⏱️ **8. Wait**\n- **Purpose:** Delay before logging failures.  \n- **Functionality:** Pauses workflow execution to avoid instant sheet logging when API errors occur.  \n- **Output:** Prevents rapid consecutive writes to Google Sheets."
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        "content": "## 📑 **9. Google Sheets Append Row**\n- **Purpose:** Log failed conversions.  \n- **Functionality:** Appends a row with:\n  - `URL` → Original Instagram link  \n  - `Drive_URL` → `N/A` (indicating download failure)  \n- **Output:** Tracks failed attempts separately.\n"
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        "content": "# 📥 Instagram to MP4 Converter Workflow\n\nThis **n8n workflow** automates the process of converting Instagram video URLs into downloadable MP4 files and storing them in **Google Drive**, while maintaining a detailed log of success and failure cases in **Google Sheets**.\n\n---\n\n## 🔧 Key Features\n\n- 📝 **Form Input**  \n  Accepts Instagram video links through a user-friendly web form.\n\n- 🌐 **Instagram Downloader API**  \n  Sends a `POST` request to retrieve downloadable video links via a third-party API.\n\n- ⬇️ **Video Download**  \n  Downloads the MP4 file from the extracted media link.\n\n- ☁️ **Google Drive Upload**  \n  Uploads the video to a Google Drive folder and sets public viewing permissions.\n\n- 📄 **Success Logging**  \n  Appends successful conversions (original URL + sharable Drive link) to a Google Sheet.\n\n- ❌ **Failure Handling**  \n  If the download fails, logs the original URL with a `Drive_URL` marked as `N/A` in a separate Google Sheets row.\n\n- ⏱️ **Wait Node**  \n  Adds a delay before logging failures to avoid rapid writes or API rate issues.\n\n---\n\n## ✅ Success Path\n1. Form submission →  \n2. API returns video link →  \n3. Video downloaded →  \n4. Uploaded to Google Drive →  \n5. Share link generated →  \n6. Logged to Google Sheets.\n\n## ❌ Failure Path\n1. API fails or returns error →  \n2. Wait →  \n3. Log failed attempt in Google Sheets with `N/A` Drive link.\n"
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