The 15-second cap is a free trial limitation. Once you're on an active subscription, there is no video length limitation, generate clips and full video ads at whatever length your creative needs.
Also useful:
- Combine clips into longer cuts any time: go to Library → Video Clips, select clips, and click Video Editor to order scenes, add a voiceover, and export. See Combining clips in the Video Editor.
- For paid social ads, longer isn't automatically better, 15–30 seconds is the performance sweet spot on Meta and TikTok, and short hooks usually outperform long cuts.
Want guidance tailored to your brand? Ask Larven Atlas, the in-app marketing assistant, about your creatives, campaigns, or strategy.