[AI] Summarize YouTube Videos Online Without Subtitles

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[AI] Summarize YouTube Videos Online Without Subtitles

Last Updated: 2025. 05. 12

Note

Creating a transcript or summary of a YouTube video may raise legal concerns, so it's advisable to get the creator's permission before recording, summarizing or sharing their content.

We are in an age when everyone wants to absorb more in less time. The same applies to watching YouTube videos. Whether you are a student watching long lecture videos, or a marketing staff analyzing competitors' strategies on YouTube, AI helps get the gist of long YouTube videos without watching them in full.

In this post, we will walk you through 3 easy methods to summarize YouTube videos, especially those without subtitles. Let's jump in and follow.

Table of Content

Summarize YouTube Video via FlexClip

Summarize YouTube Video Using AI Chrome Extensions Monica

Summarize YouTube Video Using an AI Browser Dia

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Summarize YouTube Video via FlexClip

FlexClip isn't just an ordinary YouTube video summarizer, offering you really basic text summaries. It turns long YouTube videos into engaging, short visual content.

One of the best things about FlexClip is that you can easily modify the summarized video. Head over to the transcript part and make real-time adjustments.

This is how to summarize YouTube videos using FlexClip.

Step 1. Download YouTube Video

Find the YouTube video you wish to summarize, and then click the Download button below to save the video to a local folder.

Download YouTube Video

Step 2. Summarize the YouTube Video

Access FlexClip's AI Text-Based Editing tool, upload the YouTube video you just downloaded and select the video language, FlexClip will instantly transcribe the YouTube video you uploaded.

Transcribe YouTube Video

When the transcription is done, hit the AI highlight button. It will automatically analyze the video transcript, summarize it and trim the original video to a concise one.

Summarize YouTube Video

Step 3. Export the Video Summary

Hit the Download button, you will be able to save the AI video summary to your local folder. Instead, you are able to download the summarized transcriptions.

Pros of Using FlexClip to Summarize Video

Automatically generate visual summaries and make flexible adjustments just by editing the transcripts.

Easy editing panel that everyone can utilize to change video aspect ratio, translate captions, adjust video speed, etc.

Share video summaries in many ways you like. You can save it to a local folder, save to cloud services, or post to social media platforms.

Summarize YouTube Video Using Monica

Monica is an AI-powered assistant that significantly boosts your productivity. One of its outstanding features is the ability to summarize YouTube videos. By pasting the YouTube video URL to Monica, anyone can get an instant AI-generated summary or a clear mind map, adding understanding the structure and key points.

Step 1. Install Monica

Monica is designed to be highly accessible across various platforms. Our recommendation is trying it as a browser extension, allowing you to summarize YouTube videos directly while browsing.

Step 2. Get Video Summary

Browse the YouTube video while the Monica extension is on. Hit Generate Summary. You will get the gist of the YouTube video.

Summarize YouTube Video via Monica

Pros of Using Monica App to Summarize YouTube Video

Monica is backed by top-tier models like ChatGPT 4o, Claude 3.5, and Gemini. You can get summaries from different AI chatbots.

Unique to Monica, it can create visual mind maps from YouTube videos for users to gain a comprehensive understanding.

Cons of Using Monica App to Summarize YouTube Video

Monica offers tons of features, first-time users may need a few minutes to understand the interface and how to make the most of its tools.

Summarize YouTube Video with Eightify App

Explore more than one-size-fit-all textual summaries and play in more styles. Eightify allows you to adjust the summary styles, lengths, or even create Q&As based on the YouTube video. Care what others say about the YouTube video? Eightify app also extracts top comments.

Step 1. Download Eightify App

Download Eightify app to your mobile device. Eightify app is also available as a Chrome extension. Use it on both computer or on the go.

Step 2. Get Video Summary

You will start with a general video summary. Adjust the summary tone, format, and length, you will get a more personalized YouTube video summary instantly.

Summarize YouTube Video Using Eightify App

Pros of Using Eightify App to Summarize YouTube Video

Eightify can generate more personalized YouTube video summaries by enabling you to adjust summary style, length, etc.

Switching among different versions of video summaries is blazing-fast. You don't have to wait long to get a decent video summary.

Eightify app supports over 40 languages, broadening its usability for non-English speakers.

Cons of Using Eightify App to Summarize YouTube Video

Eightify free plan has a cap on how many summaries you can generate, and the paid plan is somewhat expensive.

FAQs About Summarizing YouTube Video

1. Do I need the transcript to summarize a video?

Having a video script helps a lot, especially for text-based summarizing. YouTube content creators always provide separate subtitle files of their videos. If they don't, lots of tools like FlexClip, Monica can summarize YouTube videos without transcriptions.

2. How can I summarize YouTube video using ChatGPT?

ChatGPT can't watch YouTube videos and give a brief summary. However, you can pull the transcriptions on YouTube itself or using third party plugins, then paste it into ChatGPT, and say something like summarize this YouTube transcript.

3. Can I summarize videos in other languages?

Yes, but you may need extra translation tools to translate the summary. Tons of YouTube video summary tools claim that they can summarize videos in other languages, but the summaries are less accurate.