The length of a short video depends on the platform and its intended purpose:

1. General Definition:
   • Typically under 60 seconds, though some consider up to 3 minutes as short.
2. Platform-Specific Short Video Limits:
   • TikTok: Up to 10 minutes (but most viral videos are 15–60 seconds).
   • Instagram Reels: 3–90 seconds.
   • YouTube Shorts: Up to 60 seconds.
   • Facebook Reels: Up to 90 seconds.
   • Snapchat Spotlight: Up to 60 seconds.
   • Twitter/X Videos: Short clips are usually under 2 minutes.
   • LinkedIn Video: No official “short” limit, but 30–60 seconds is ideal for engagement.

For engagement and retention, 15–30 seconds is often the sweet spot.