How to Convert Long Videos Into Shorts Using AI? Step-by-Step Guide

Long videos can contain several useful moments that can work well as short-form content. Instead of manually watching the entire video and cutting every clip yourself, AI tools can help identify interesting parts and turn them into short videos.

In this guide, you will learn how to convert a long video into Shorts using AI, add captions, improve the clips, and prepare them for platforms such as YouTube Shorts, Instagram Reels, and TikTok.

What Is an AI Video-to-Shorts Tool?

An AI video-to-shorts tool analyzes a longer video and helps create shorter clips from it.

Depending on the tool, AI may help with:

• Finding interesting moments
• Selecting clips
• Removing unnecessary parts
• Adding captions
• Changing the video to vertical format
• Adjusting the framing
• Creating titles
• Generating short descriptions

The exact features depend on the AI tool you use.

Why Convert Long Videos Into Shorts?

One long video can contain multiple useful short clips.

For example, a 30-minute tutorial could potentially provide several short clips about:

• One useful tip
• A common mistake
• A quick tutorial
• An interesting fact
• An important part of the discussion
• A question and answer

This can save time compared with creating every Short from the beginning.

What You Need

Before starting, you generally need:

• A long video
• An AI video editing or clipping tool
• Internet connection
• A phone or computer
• Your preferred social media platform

If the video belongs to someone else, make sure you have the necessary permission or rights to reuse it.

Step 1: Choose Your Long Video

First, select the long video you want to convert into Shorts.

It could be:

• A YouTube video
• A podcast
• An interview
• A tutorial
• A webinar
• A recorded presentation
• Your own livestream

Your own original videos are usually the easiest source because you already have the right to reuse them.

Step 2: Upload the Video to an AI Tool

Open your chosen AI video tool and look for an option such as:

Upload Video, Create Clips, AI Clips, or Long Video to Shorts.

Upload your video and wait for the tool to process it.

The processing time can depend on the video length, file size, internet connection, and the tool.

Step 3: Let AI Find Interesting Clips

Many AI video tools can analyze the video and suggest shorter clips.

For example, AI may identify sections containing:

• Strong statements
• Useful information
• Questions
• Interesting discussions
• Important tips
• Potential hooks

Do not automatically publish every clip suggested by AI.

Watch the selected clips yourself and choose the ones that make sense without requiring too much context from the original video.

Step 4: Choose the Best Clip

A good Short should usually get to the main point quickly.

For example, instead of starting with:

"Hello everyone, welcome back to another video..."

You may want to start closer to the useful part of the discussion.

A simple structure can be:

Hook → Main Point → Useful Information → Ending

The exact structure depends on your content.

Step 5: Convert the Video to Vertical Format

Short-form platforms commonly use vertical video.

A typical format is:

9:16

AI editing tools can automatically reframe a horizontal video for vertical viewing.

However, always check the final video because automatic cropping can sometimes cut off a person's face or important parts of the screen.

Step 6: Add Automatic Captions

Captions are useful when people watch videos without sound.

Many AI video editors can automatically generate captions from the video's audio.

After generating captions, check them carefully.

AI transcription can sometimes misunderstand:

• Names
• Technical words
• Accents
• Brand names
• Numbers

Correct any mistakes before publishing.

Step 7: Improve the Short With AI

You can ask an AI tool to help improve the clip.

For example, you can use a prompt like:

Analyze this video clip and suggest a short, attention-grabbing title and caption. Keep the suggestions accurate and related to the actual content. Do not use misleading clickbait.

You can also ask for multiple hook ideas:

Give me 5 short opening hook ideas for this video clip. Keep them natural, clear, and relevant to the video's actual content.

Step 8: Add Text or Visual Elements

Depending on your content, you can add:

• Important keywords
• Headings
• Emojis
• Screenshots
• Images
• Simple animations
• Progress indicators

Do not add too many elements. The main content should remain easy to understand.

Step 9: Review the Final Short

Before downloading the video, watch the entire Short.

Check:

• Is the beginning interesting?
• Is the main point clear?
• Are the captions correct?
• Is the video properly framed?
• Is anything important cut off?
• Is the audio clear?
• Are there unnecessary pauses?
• Does the clip make sense on its own?

This final check is important because AI-generated clips are not always perfect.

Step 10: Export and Upload

Once you are satisfied with the Short, export it from your video editor.

Then you can upload it to platforms that support short-form vertical videos.

Add a relevant:

• Title
• Caption
• Description
• Hashtags, where appropriate

Avoid using unrelated hashtags just to get more views.

Ready-to-Use AI Prompts for Shorts

Here are some prompts you can use when working with AI.

Find the Best Moments

Analyze this long video and identify the most useful and interesting moments that could work as short-form videos. For each suggested clip, explain the topic and why it may work as a standalone Short.

Create Hook Ideas

Give me 10 short and natural hook ideas for this video. Keep them relevant to the actual content and avoid misleading clickbait.

Create Short Titles

Create 10 short titles for this video clip. Keep them clear, searchable, and relevant to the content.

Improve Captions

Rewrite these captions to make them easier to read on a mobile screen. Keep the original meaning and do not add information.

Find Multiple Shorts

Analyze this long video and suggest 5 different Short ideas. For each idea, provide the topic, suggested starting point, main message, and a possible title.

How to Make Better Shorts With AI

AI can save time, but the quality of the original content still matters.

Try to:

• Start with a useful or interesting moment
• Remove unnecessary pauses
• Keep the main idea clear
• Use readable captions
• Keep the subject properly framed
• Avoid unnecessary effects
• Check every AI-generated clip manually

The goal should not simply be to make more Shorts. The goal is to make Shorts that provide value to viewers.

Can AI Automatically Make Viral Shorts?

AI can help find potentially interesting moments, but it cannot guarantee that a Short will go viral.

Views can depend on many factors, including:

• Topic
• Audience
• Content quality
• Hook
• Viewer retention
• Competition
• Timing
• Platform recommendations

Therefore, treat AI as an editing and content-assistance tool rather than a guaranteed viral-video generator.

Important Copyright Consideration

Be careful when converting videos that you did not create.

Uploading another creator's video as your own can create copyright and platform-policy problems.

Before reusing someone else's content, check whether you have permission or whether your use is covered by an applicable legal exception. Platform rules can also apply separately.

Using AI to edit a copyrighted video does not automatically give you ownership of that content.

Limitations of AI Video-to-Shorts Tools

AI tools are useful, but they are not perfect.

Some common problems include:

• Selecting clips without enough context
• Incorrect captions
• Poor automatic cropping
• Missing important moments
• Generic titles
• Awkward cuts
• Incorrect speaker detection

That is why human review is still important.

Simple Workflow

You can follow this simple process:

Long Video → Upload to AI Tool → AI Finds Clips → Select Best Clip → Vertical 9:16 → Add Captions → Edit → Review → Export → Upload

This workflow can make the process much faster than manually creating every Short from scratch.

Final Thoughts

Converting long videos into Shorts with AI can save time, especially for creators who already have podcasts, tutorials, interviews, webinars, or long-form YouTube videos.

AI can help identify clips, generate captions, reframe videos, and suggest titles. However, you should always review the final result before publishing.

The best approach is to use AI for the repetitive editing work while keeping the final content decisions under your control.