YouTube Video Content Analyzer & Summarizer with Gemini AI

Description

This workflow takes two inputs, YouTube video URL (required) and a description of what information to extract from the video. If the description/"what you want" field is left empty, the default prompt will generate a detailed summary and description of the video's contents. However, you can ask for something more specific using this field/input. ++ Don't forget to make the workflow Active and use the production URL from the form node.

Benefits

Instant Summary Generation - Convert hours of watching YouTube videos to familiar, structured paragraphs and sentences in less than a minute
Live Integration - Generate a summary or extract information on the contents of a YouTube video whenever, wherever
Virtually Complete Automation - All that needs to be done is to add the video URL and describe what you want to know from the video
Presentation - You can ask for a specific structure or tone to better help you understand or study the contents of the video

How It Works

Smart Form Interface:

Simple N8N form captures video URL and description of what's to be extracted
Designed for rapid and repeated completion anywhere and anytime

Description Check:

Uses JavaScript to determine if the description was filled in or left empty
If the description field was left empty, the default prompt is, "Please be as descriptive as possible about the contents being spoken of in this video after giving a detailed summary."
If the description field is filled, then the filled input will be used to describe what information to extract from the video

HTTP Request:

We're using Gemini API, specifically the video understanding endpoint
We make a post HTTP request passing the video URL and the description of what information to extract

Setup Instructions:

HTTP Request Setup:

Sign up for a Google Cloud account, join the Developer Program and get your Gemini API key

Get curl for Gemini Video Understanding API

The video understanding relies on the inputs from the form, code and HTTP request node, so correct mapping is essential for the workflow to function correctly.
Feel free to reach out for additional help or clarification at my Gmail: [email protected], and I'll get back to you as soon as I can.

Setup Steps:

Code Node Setup:

The code node is used as a filter to ensure a description prompt is always passed on. Use the JavaScript code below for that effect:
// Loop over input items and add a new field called 'myNewField' to the JSON of each one
for (const item of $input.all()) {
item.json.myNewField = 1;

if ($input.first().json['What u want?'].trim() == "") {
$input.first().json['What do you want?'] = "Please be as descriptive as possible about the contents being spoken of this video after giving a detailed summary";
}

}

return $input.all();
// End of Code

HTTP Request:

To use Gemini Video Understanding, you'll need your Gemini API key
Go to https://ai.google.dev/gemini-api/docs/video-understanding#youtube. This link will take you directly to the snippet. Just select REST programming language, copy that curl command, then paste it into the HTTP Request node
Replace "Please summarize the video in 3 sentences." with the code node's output, which should either be the default description or the one entered by the user (second output field variable)
Replace "https://www.youtube.com/watch?v=9hE5-98ZeCg" with the n8n form node's first output field, which should be the YouTube video URL variable
Replace $GEMINI_API_KEY with your API key

Redirect:

Use n8n form node, page type "Final Ending" to redirect user to the initial n8n form for another analysis or preferred destination