Tutorials·8 min read

How to Create YouTube Shorts From Long YouTube Videos (AI Method, 2026)

YouTube Shorts are the fastest growth lever on the platform. Here's how to create them from your existing long-form videos without any editing work.

Why YouTube Shorts Are Worth Your Attention in 2026

YouTube Shorts receive over 70 billion daily views. The algorithm pushes Shorts to new viewers regardless of channel size, making it one of the few remaining platforms where a small creator can reach a massive audience without a pre-existing following. And because Shorts live on the same channel as your long-form videos, every new Short viewer is a potential subscriber who can find your full content.

70B+
Daily Shorts views
YouTube 2025
65%
Of Shorts viewers watch long-form from same channel
YouTube
45%
Ad revenue share to creators
YouTube YPP
3x
Faster subscriber growth for Shorts-active channels
Creator data

The Manual Way vs The AI Way

The manual approach to creating Shorts from long videos: watch the whole thing, note timestamps of good moments, open a video editor, trim clips, export in correct aspect ratio, add captions, upload. For a 30-minute video, that's easily 2-3 hours.

The AI approach with ViddyFlow: paste your YouTube URL, wait 5-10 minutes, download 5 vertical clips ready to post. Total active time: under 10 minutes.

Creating YouTube Shorts With ViddyFlow

  1. Open ViddyFlow and create a new job
  2. Paste your long YouTube video URL
  3. Choose your processing mode (Balanced works well for most content)
  4. ViddyFlow analyzes the video using multi-signal AI (video + audio + transcript)
  5. Download your 5 vertical clips (already in 9:16 format)
  6. Add captions in YouTube's Short editor before publishing
  7. Post and repeat — one long video per week = 5 Shorts per week
ViddyFlow's clips are delivered in 9:16 format (1080×1920) — the exact native format for YouTube Shorts. No reformatting needed.

Tips for Better-Performing Shorts

  • Review all 5 clips — pick the 2-3 strongest for first-week posting, save the rest for later
  • Add captions — 80% of Shorts viewers watch without sound
  • Post at consistent times — YouTube's algorithm rewards creators with predictable schedules
  • Use the AI-generated descriptions from ViddyFlow as a starting point
  • Cross-post the same clips to TikTok and Instagram Reels for maximum reach

Start creating YouTube Shorts from your long videos today.

Try ViddyFlow Free

Frequently Asked Questions

Ready to turn your streams into viral clips?

ViddyFlow uses AI to automatically detect the best moments in your Twitch VODs and transform them into highlight reels, TikTok clips, and YouTube Shorts — in minutes, not hours.