7 Best AI Tools to Create YouTube Shorts from Existing Videos (2025)

In the fast-paced realm of digital content creation, the advent of YouTube Shorts has marked a significant shift, emphasizing brevity and engagement. As content creators and businesses leverage this feature to reach wider audiences, AI tools have surfaced, promising to simplify and elevate the creation of YouTube Shorts from existing videos.

We highlight some of the best AI tools to create YouTube shorts from existing videos.

1. Submagic

Submagic transforms your raw video footage into viral, high-performing shorts within seconds. Designed for content creators who need speed and precision, Submagic uses advanced AI to automate editing, captioning, B-Roll insertion, and more—so you can go from long-form to viral clips in just a few clicks.

Backed by over 3 million users and trusted by global brands like PSG, Y Combinator, Lemlist, and Nas Daily, Submagic is your all-in-one platform to boost reach, engagement, and editing efficiency.

The AI engine handles everything from cutting silences and generating captions in 48+ languages, to inserting dynamic transitions, zooms, and hooks that increase viewer retention and social media visibility. With 98.8% caption accuracy, 10+ hours saved per week, and over 50% boost in engagement, Submagic is redefining short-form video creation.

Best of all, Submagic's Magic Clips feature automatically detects and extracts the most impactful moments from your long videos, helping you generate multiple viral shorts instantly for platforms like TikTok, YouTube Shorts, and Instagram Reels.

Top Features of Submagic:

• AI-Generated Captions: Automatically adds dynamic subtitles in 48+ languages with 98.8% accuracy
• Time-Saving Automation: Instantly trims silences, removes filler words, and creates Magic Clips from long-form videos
• Engagement-Boosting Visuals: AI adds B-Roll, transitions, zooms, and hooks to captivate viewers
• Global Reach & Accessibility: Subtitle customization, AI translation, and accessibility features help reach a wider audience
• Customization Power: Choose from 28+ caption styles and manually fine-tune for branding precision

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2. Quso

Quso makes it effortless to turn long-form videos into viral, social-ready clips using powerful AI video clipping. From detecting scenes to auto-removing silences, Quso automates every step of the editing process—so you can focus on creating content, not cutting it.

With results like 2000x increases in views, 9x monthly time savings, and 150% subscriber growth, Quso is trusted by marketers, creators, coaches, and CEOs alike. Whether you're working with YouTube content or raw video footage, Quso’s intelligent tools help you create scroll-stopping clips that boost engagement and drive results.

Its AI analyzes long videos, detects the most engaging moments, removes silences and background noise, adjusts playback speed, and automatically resizes clips for TikTok, YouTube Shorts, or Instagram. Just upload, let the AI work its magic, and share across platforms with on-brand, professional-quality videos.

Top Features of Quso:

• AI-Powered Scene Detection: Automatically finds high-impact moments and highlights from long-form videos
• Auto Silence & Noise Removal: Instantly improves video audio quality for clear, professional sound
• Time-Saving Automation: Reduces monthly editing time by up to 9x and boosts productivity by 7x
• Multi-Platform Ready: Auto-resizes content for TikTok, Instagram, YouTube, and more with one click
• Reusable Templates: Stay consistent with brand fonts, colors, and logos through customizable templates

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3. Munch

Munch specializes in extracting the most engaging and impactful clips from your long-form videos.  The platform offers automatic editing, auto-caption generating, post content and publishing – all in one convenient, intuitive tool.

The clip that is chosen is based on extensive machine learning capabilities including GPT, OCR, and NLP, designed to keep what's important at the center of each video. You will generate clips with the highest potential to trend on social media, based on marketing insights and trending analysis.

Best of all it ensures that content is clipped and adjusted to have both the action at the center of the frame, and ideal for performance on any platform – YouTube, TikTok or Instagram.

Top Features of Munch:

• AI-Driven Efficiency: Quickly identifies, extracts, and repurposes content from videos
• Time Saving Features: Auto-caption generating, aspect ratio smart-cropping and much more.
• Powered by Machine Learning: Identifies engaging, coherent, and cohesive moments.

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4. Klap

In the competitive landscape of content creation, Klap emerges as a groundbreaking AI tool, enabling creators to efficiently convert their YouTube videos into engaging short content. Perfectly tailored for platforms like TikTok, Reels, and YouTube Shorts, Klap optimizes the content creation process, making it more streamlined and user-friendly, thus serving as an ideal companion for creators and marketers aiming for higher reach and engagement.

Klap’s user-centric interface allows seamless integration of YouTube content. By simply pasting the YouTube link, users activate Klap’s advanced AI, which meticulously scans the content to identify prime focus areas and automatically generates multilingual captions. This results in a set of polished, ready-to-publish short videos, reducing extra work and maximizing content output.

Top Features of Klap:

• AI-Driven Efficiency: Enables the creation of short videos with advanced AI, ensuring optimal focus and topic selection.
• User-Friendly Interface: Offers a seamless experience with a simplified YouTube link input mechanism.
• Multilingual Captioning: Expands audience reach with automatically generated captions in various languages.

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5. Dumme

Dumme stands out as a versatile content transformation tool, allowing creators to import existing videos from a variety of platforms like YouTube, Spotify, and Twitter, or even upload a video file directly. Its AI models are adept at identifying and isolating significant moments from the videos while maintaining their context and structure, thus offering an output that is as cohesive and concise as human-edited ones.

Dumme not only optimizes the content for a cohesive narrative and a natural ending but also adorns the shorts with captivating captions, titles, and descriptions. Supporting over 20 languages, Dumme caters to a diverse user base ranging from content creators to businesses.

Top Features of Dumme:

• Contextual Highlight Detection: Employs advanced AI to accurately identify clip-worthy moments while preserving the original context.
• Multifaceted Import Options: Supports imports from multiple platforms and direct uploads.
• Comprehensive Output Provision: Delivers fully optimized shorts, complete with accurate captions, engaging titles, and coherent descriptions.

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6. 2short

2short.ai stands out in transforming YouTube clips into compelling short videos, employing intelligent analysis and automated editing. By generating accurate transcripts, it not only improves accessibility and SEO but also paves the way for a more immersive viewing experience. Its seamless integration with YouTube and time-saving automation make 2short.ai an invaluable ally for creators, marketers, and educators aspiring to captivate audiences with enthralling content.

With a knack for creating visually arresting shorts that grow audiences and convey messages effectively, 2short.ai optimizes every aspect of content creation. It empowers creators to elevate their content strategies, ensuring higher engagement and substantial gains. The tool's emphasis on audience engagement and simplified content creation process make it a pioneering solution in the domain of short video creation.

Top Features of 2short.ai:

• Intelligent Video Analysis: Employs advanced AI for pinpointing pivotal moments in videos to create attention-grabbing shorts.
• Seamless Integration and Automation: Offers a hassle-free experience with integrated YouTube support and automated editing functionalities.
• Enhanced Accessibility: Generates accurate transcripts, improving content accessibility and SEO capabilities.

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7. Flixier

Flixier offers a unique approach to creating YouTube shorts, allowing users to craft compelling content directly in their web browsers without any downloads or installations. With its powerful yet user-friendly interface, Flixier facilitates the conversion of existing YouTube videos into shorts, or the creation of new ones from scratch, eliminating any system specification or operating system constraints.

This tool emphasizes simplicity and speed, equipped with a drag-and-drop interface that streamlines the video assembly process, from cutting and combining clips to adding effects. Flixier’s cloud-based processing alleviates the burden on local systems, making short creation a swift and smooth experience. Its uncomplicated, fast, and efficient workflow proves invaluable for creators looking to delve into YouTube shorts without the hassle and complexity of traditional video editing tools.

Top Features of Flixier:

• Browser-Based Operation: Eliminates the need for downloads, installations, or account creation, offering a seamless user experience.
• User-Friendly Interface: Features a drag-and-drop mechanism, allowing easy assembly and modification of videos.
• Cloud-Based Processing: Ensures quick and hassle-free video processing, regardless of system specifications or operating systems.

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Revolutionizing Content Creation with AI Tools for YouTube Shorts

The digital age is flourishing with innovations that are transcending the realms of content creation and social media marketing. AI-powered tools like Klap, Dumme, 2short.ai, and Flixier are pivotal in reshaping the landscape of short video creation from existing YouTube videos. These tools, with their unique features such as intelligent analysis, automatic subtitles, and seamless integration, have made the creation of engaging and visually striking shorts more accessible and efficient than ever before.

For content creators, marketers, influencers, and brands aiming to captivate wider audiences across diverse platforms, investing in these AI tools can be a game-changer. They not only save substantial time and effort by automating tedious editing tasks but also ensure high-quality, impactful content that stands out in the crowded social media space.

In a world that is continually evolving and moving at a rapid pace, embracing these advanced AI tools is paramount for staying relevant and competitive. Whether it’s enhancing engagement, maintaining brand consistency, or simplifying the creation process, these tools are unlocking new dimensions in content creation and delivery, empowering users to reach new heights of creative expression and audience connection.