Automate Subtitle Generation for Video Libraries

VideoDB Documentation

Automate Subtitle Generation for Video Libraries

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Goal:

This workflow takes video URLs, uploads them to VideoDB, indexes spoken content, adds subtitle overlays directly to the video, and saves the subtitled videos to Google Drive. It creates professional subtitle overlays that are permanently embedded in the video.

The workflow is useful for creating accessible video content with professional subtitle styling that works across all platforms, unlike platform-specific auto-generated subtitles.

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Prerequisites:

N8N Instance: Running N8N automation platform (cloud or self-hosted)

VideoDB API Key: Obtain from VideoDB Console

VideoDB N8N Node: Install the custom node in your N8N instance

Google Drive Account: With API access for file uploads

Video URLs: Access to video content that needs subtitles

Main Workflow Steps:

Step 1: Video Input and Upload

Form trigger collects YouTube video URL for subtitle processing

Upload video content to VideoDB for processing

Wait for upload completion before proceeding

Step 2: Spoken Content Indexing

Monitor upload status via HTTP request polling

Index spoken words from the video content

Generate timestamped transcript for subtitle creation

Step 3: Subtitle Generation and Overlay

Use VideoDB subtitle operation to add subtitle overlays

Create professional subtitle styling embedded in video

Process video with precisely timed subtitle overlays

Step 4: Google Drive Storage

Download subtitled video from VideoDB

Upload subtitled video to Google Drive folder

Store video with subtitles permanently embedded

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Conclusion:

This workflow creates professional subtitled videos with embedded subtitle overlays, making content accessible across all platforms while maintaining consistent subtitle styling and timing.

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