How to Make AI Videos Longer: 4 Ways Past the 15-Second Cap
You make an AI video longer by putting several short clips together. Models stop at a few seconds per clip because every second costs compute and faces drift the longer a model runs, so a minute-long AI video is nearly always four or more clips joined. The four ways: pick a model with longer clips, use an Extend button if the tool has one, chain clips through their last frames, or make clips separately and cut them together.
On Hotel Lobby Video (rapaivideo.net) a video that follows a track (the Hotel Lobby song, your own song, or an AI rap in the Hotel Lobby booth) runs 5, 8, 10, 12 or 15 seconds. An AI rap on another stage, or an effect, goes to 20 or 30 seconds on Seedance 2.5. There is no Extend button; for more, you make more clips with the same photos and join them.
Updated
AI VIDEO · PAST 15 SECONDS
Make AI videos longer
- Four ways
- A one-minute rap
- What it costs
Pick the way that fits the video
| Way | Works when | The catch |
|---|---|---|
| A model with longer clips | You need one unbroken shot | Few models pass 15 to 30 seconds, and each second costs more |
| Extend | Your tool has the button for its own clips | Only inside that tool; the scene can wander |
| Chain last frames | Any image-to-video tool | Each link is a new render; joins can jump |
| Join clips in an editor | Music videos, stories, longer raps | Keep photos, outfit and shape the same so it reads as one video |
Google’s Flow is one tool with an Extend option for its own Veo clips. Kling has one too; this walkthrough shows where it sits:
What an Extend button looks like in a tool that has one (Kling)by Mindly Nova · Watch on YouTube
Clips by other creators. Press play to watch here; the player comes from the platform the clip was posted on.
Clip one of four
Make the first 15 seconds
Add two photos and the first part of your song. Make the next parts with the same photos and join them.
Your two performers
A clear, well-lit photo works best. Two photos put two people side by side.
Choose the stage
Video settings
What should they rap about?
Ready in about 3 minutes; failed generations return your credits. View pricing
A one-minute rap video from four clips
- Cut your song into four parts of up to 15 seconds each. Our editor takes MP3, WAV, M4A, AAC or OGG and lets you drag to the stretch you want.
- Make clip 1 with your two photos, Your song and the first part, at 15 seconds and 9:16.
- Make clips 2 to 4 with the same photos, the same shape and the same quality, each with the next part of the song.
- Line the four MP4s up in CapCut, iMovie or any editor, cutting on a beat.
- Lay your full master over the top, so the sound never jumps at a join.
Each clip is its own render, so faces and light can shift a little between clips. Sharp, front-facing photos keep them closest; see which photos work best.
What the minute costs here
| Length | Clips | Credits on Wan 3.0 480p |
|---|---|---|
| 15 seconds | 1 | 7 |
| 30 seconds | 2 | 14 |
| 60 seconds | 4 | 28 |
| A 3-minute song | 12 | 84 |
Every clip is priced on its own: 3, 4, 5, 6 or 7 credits at 480p for 5, 8, 10, 12 or 15 seconds. The full price list is on the pricing page. There is no free preview.
When a longer clip is not the answer
Every Hotel Lobby clip is the same booth with the same two people. Twelve of them make a performance loop, not a story with scenes. For a music video with places and a plot, use several tools; how to make an AI music video for your own song walks through that route.
FAQ
Why are AI videos so short?
Each second costs the provider compute, and faces drift over long renders. Most models stop at 5 to 15 seconds per clip.
How do I make an AI video longer than 15 seconds?
Use a model with longer clips, an Extend button, chained last frames, or several clips joined in an editor.
How long can a video be on Hotel Lobby Video?
With a track, 5, 8, 10, 12 or 15 seconds. An AI rap on another stage or an effect goes to 20 or 30 seconds on Seedance 2.5.
Is there an Extend button on Hotel Lobby Video?
No. Make another clip with the same photos and settings, then join them in an editor.
What does a one-minute AI rap video cost?
Four 15-second clips on Wan 3.0 at 480p, 28 credits.
Sources
Read next
How Long Does an AI Video Take to Generate? Our Real Times
Measured render times from Hotel Lobby Video’s paid renders in October 2026: Seedance 2.0 Mini about 3.5 minutes, Wan 3.0 480p about 7.6 minutes for 12 seconds, what makes a render slow, and how to wait less
How to Make an AI Music Video for Your Own Song (Suno Too)
Two routes to an AI music video for your own song: a full-length video built from several tools (song, stills, motion, lip sync, edit), or a short performance clip from two photos on Hotel Lobby Video
Hotel Lobby Video is an independent tool, not affiliated with Quavo, Takeoff, Migos, Quality Control Music, Motown or COLORS.