Best Of
6 Best AI Tools to Create YouTube Shorts from Existing Videos (2026)
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Short-form video has become one of the dominant formats across platforms, with YouTube Shorts, TikTok, and Instagram Reels driving massive reach through quick, high-impact content. Instead of manually editing long videos into clips, a new generation of AI tools can now automatically identify key moments, generate captions, reframe footage, and optimize videos for vertical viewing in seconds.
Below are some of the best AI tools for turning existing videos into YouTube Shorts.
Comparison Table of Best AI Tools for YouTube Shorts
| AI Tool | Best For | Price (USD) | Features |
|---|---|---|---|
| Submagic | AI-powered captioning and viral clip generation | Free / $12–41/mo | Auto captions, B-roll insertion, Magic Clips, 48+ languages, engagement optimization |
| Quso | Automated clipping and social video scaling | Free trial / ~$29+/mo | Scene detection, silence removal, auto resizing, templates, multi-platform export |
| Klap | YouTube-to-shorts automation | ~$23–63/mo | Link-based input, AI clip detection, captions, multi-language support |
| Flixier | Browser-based video editing | Free / $23–43/mo | Drag-and-drop editing, cloud rendering, no install, fast exports |
| Dumme | Context-aware clip extraction | Free / paid plans | Highlight detection, multi-platform imports, captions, titles, descriptions |
| 2short.ai | YouTube clip automation with transcripts | Free / $10–50/mo | AI analysis, transcripts, SEO enhancement, automated editing |
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.
Pros and Cons
- Extremely fast AI caption generation with ~98–99% accuracy across 48+ languages
- Automates editing tasks like silence removal, B-roll insertion, zooms, and transitions
- “Magic Clips” feature quickly extracts multiple short-form videos from long content
- Very easy to use with a simple workflow that can produce videos in just a few clicks
- Strong engagement-focused features like animated captions, emojis, and hooks
- Primarily focused on captions and short-form editing rather than full video production
- Limited manual editing control compared to advanced video editors
- Free plan has restrictions (watermarks, limited exports, shorter video length)
- Can require additional tools for full content workflows like scheduling or analytics
- Output quality and flexibility can feel constrained for complex or long-form projects
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.
Pros and Cons
- All-in-one platform combining clipping, editing, scheduling, and analytics in a single dashboard
- Strong AI clip generation that automatically detects highlights and creates multiple short videos
- Significant time savings with automation like silence removal, subtitles, and resizing
- Built-in social media scheduling and bulk publishing tools streamline distribution
- Beginner-friendly interface with templates and brand kit for consistent content
- Credit-based system can limit usage depending on plan and workflow
- Web-based editor lacks advanced timeline control compared to professional editing software
- Some advanced features (templates, analytics, scheduling) locked behind higher-tier plans
- No export to professional editing tools like Premiere or DaVinci for advanced workflows
- More focused on social media automation than deep creative customization
3. Klap
Klap emerges as a groundbreaking AI tool, designed specifically for turning long-form YouTube content into short, engaging clips optimized for platforms like TikTok, Reels, and YouTube Shorts. By focusing on automation and simplicity, Klap allows creators to skip manual editing entirely and instead rely on AI to identify the most compelling segments of a video.
The platform operates with a streamlined workflow—users simply paste a YouTube link, and Klap analyzes the content, detects highlights, and generates ready-to-publish clips complete with captions. This makes it particularly effective for creators looking to scale output quickly without investing time in editing or post-production.
Pros and Cons
- Very simple workflow using just a YouTube link to generate clips instantly
- Strong AI highlight detection for identifying viral moments
- Automatic caption generation with multilingual support
- Designed specifically for short-form platforms like TikTok and YouTube Shorts
- Fast processing with minimal manual input required
- Limited editing control compared to full video editors
- Customization options are relatively basic
- Output quality depends heavily on source video structure
- Lacks built-in scheduling or publishing tools
- Best suited for repurposing rather than original content creation
4. Flixier
Flixier offers a unique approach to creating YouTube shorts by delivering a fully browser-based video editing platform that removes the need for downloads or high-performance hardware. This makes it accessible to a wide range of users, from beginners to teams collaborating remotely on content production.
Unlike AI-first clipping tools, Flixier provides a more traditional editing environment enhanced by cloud processing, allowing users to cut, combine, and enhance clips quickly. Its strength lies in speed and accessibility rather than deep automation, making it ideal for users who still want manual control but without the friction of heavy software.
Pros and Cons
- Fully browser-based with no downloads or installation required
- Fast cloud rendering speeds regardless of device performance
- Drag-and-drop editor is easy for beginners to learn
- Supports both short-form and full video editing workflows
- Good collaboration features for teams working remotely
- Requires stable internet connection for editing and rendering
- Less advanced than professional desktop editing software
- Some export options and features locked behind paid plans
- Interface can feel limited for complex editing projects
- Not specifically optimized for viral clip generation like AI-first tools
5. Dumme
Dumme stands out as a versatile content transformation tool that focuses on understanding context rather than just cutting clips. It analyzes videos deeply to identify meaningful moments while preserving narrative flow, which helps ensure that generated clips feel intentional rather than randomly segmented.
The platform supports a wide range of inputs, including YouTube videos, podcasts, and uploaded files, making it highly flexible for different types of creators. It also enhances output with captions, titles, and descriptions, effectively turning raw footage into fully packaged short-form content.
Pros and Cons
- Strong contextual AI that preserves meaning when extracting clips
- Supports multiple input sources including video, audio, and uploads
- Automatically generates captions, titles, and descriptions
- Produces clips with natural structure and clean endings
- Supports multiple languages for broader audience reach
- Less control over manual editing compared to traditional tools
- Output may require minor adjustments for precise branding
- Limited advanced customization for visual styling
- Not focused on bulk content workflows or scheduling
- Performance can vary depending on input content quality
6. 2short.ai
2short.ai stands out in transforming YouTube clips into compelling short videos through intelligent automation and content analysis. It focuses heavily on identifying high-retention segments within videos, making it particularly useful for creators looking to grow audiences through optimized short-form content.
In addition to clip generation, the platform enhances accessibility and discoverability by producing accurate transcripts and captions. This combination of automation and SEO-friendly features makes it a strong option for educators, marketers, and content creators aiming to maximize the value of existing video content.
Pros and Cons
- Strong AI analysis for identifying high-retention video segments
- Automatic transcript and caption generation improves accessibility and SEO
- Seamless YouTube integration simplifies workflow
- Designed to maximize audience growth through optimized clips
- Saves significant time compared to manual editing
- Limited customization compared to full video editing platforms
- Focuses primarily on YouTube-based workflows
- Output may require refinement for branding consistency
- Advanced features restricted to paid plans
- Less suitable for complex or multi-layered video projects
The Future of Short-Form Video Creation
Short-form video is no longer just a trend—it has become a primary format for content distribution across major platforms. As algorithms increasingly prioritize engagement and watch time, the ability to quickly identify, edit, and publish high-impact clips has become a key advantage for creators and businesses alike.
AI-powered tools are reshaping this process by automating what was once manual and time-intensive. From detecting key moments in long-form videos to generating captions, reframing content for vertical viewing, and optimizing clips for different platforms, these tools streamline production while maintaining consistency and quality.
Rather than replacing creativity, these systems act as force multipliers—allowing creators to scale output, test more content variations, and respond faster to trends. As the technology continues to evolve, the gap between idea and published content will continue to shrink, making efficient content repurposing an essential part of any modern media strategy.
