Producing YouTube Shorts on a consistent schedule is time-intensive. Scripting, recording, editing, and adding captions each demand separate effort. AI video tools now automate most of this workflow. Some generate a short from a simple idea, while others repurpose existing long-form footage into multiple vertical clips. Choosing the right tool can save hours every week.
Know Your Goal First
Not every AI video tool does the same job. Before selecting one, ask: Are you creating a video from scratch, or extracting clips from footage you already have?
- Generating from an idea: You type a prompt, upload a photo, or paste a script, and the tool builds a new video.
- Repurposing long video: You have a podcast, webinar, or vlog, and the tool identifies the best moments and turns them into short clips.
These are two distinct tasks. A generator cannot clip an existing podcast, and a repurposing tool cannot create original footage. Confusing them leads to wasted effort.
What to Check Before You Pick a Tool
The success of a short video depends on a few essential details:
- Vertical output: The video must export in true 9:16 format without black bars.
- Speed: A tool that takes twenty minutes per clip is impractical for daily posting.
- Automation level: Some tools write the script, add a voice, and place captions automatically. Others leave most work to the user.
- Input options: Text, images, links, or audio — the more starting points, the more versatile the tool.
- Captions and sound: Most viewers watch with sound off initially, so captions and music are baseline requirements.
- Pricing: A flat monthly fee is easier to budget than a credit system that depletes quickly.
The Two Paths Worth Knowing
Tools That Build Something New
Creators working from an idea, script, or photo should consider these:
- Pexo: Uses a conversational approach — describe the video in plain language, and it writes the script, adds a voice, and assembles the clip in one exchange.
- Runway and Pika: Focus on visual quality and creative style rather than a complete production workflow.
- InVideo AI: Suits narration-heavy, faceless channels built around a written angle.
- Canva: Ideal for creators already familiar with the platform who prefer a template-driven approach.
Tools That Repurpose Existing Footage
OpusClip leads this category. It processes a long recording — podcast, livestream, interview — identifies the strongest moments, and edits them into vertical clips with captions and reframing. It also scores each clip by predicted performance. Creators with hours of recorded content can save considerable time using this method.
How to Choose
Match the tool to the task. Starting with no footage? Pick a generator. Have long recordings? Choose a repurposing tool. Many creators use both: one for original ideas, another for extracting clips from long recordings.
Review the free plan first. Every tool listed offers one, though most include a watermark or usage limit. Testing a free tier for a week provides more insight than any comparison article.
Final Thoughts
No single tool is the definitive choice — the right option depends on your starting point. For the fastest path from idea to finished vertical clip, Pexo is strong. For visual style over speed, Runway and Pika excel. For those with long recordings already available, OpusClip can turn them into weeks of short-form content. Selecting a tool based on your resources makes the ongoing task of producing Shorts much more manageable.
Note: Prices change frequently, so check each site directly before committing.