AI video extender · Independent · via API

AI Video Extender: Make Your AI Videos Longer

This AI video extender continues a video from its last frame, so a 5-second shot can run 20, 30 or 60 seconds. Drop in your video, describe what happens next and render the next segment with Kling 3.0, Veo 3.1, Wan 2.5, Hailuo 02 or any of the 9 image-to-video models here. The AI video extender captures the last frame in your browser and shows total length and credits before you spend anything.

From the last frame
Up to 5 extensions per plan
From 2 cr/s
Kling · Veo · Wan · Hailuo

Start frameDrop, click or paste · JPG / PNG / WebP

0/2500

Negative prompt

10 cr/s × 5s≈ $0.68Starter pack from $2.99

AI video extender illustration: a 5-second clip of a paper boat on a rainy cobbled street, extended to 20 seconds

Original clip· illustration

00:05total

01Extend video AI · chain builder

Extend video with AI: build your chain

Add your clip to the AI video extender, stack extensions, then pick a model and a length for each one — Kling, Veo, Wan and Hailuo are all in the list. Total length and credits update as you go. Tap a seam to see how the cut lines up and whether it crosses models.

Total length: 00:15
New footage: +10s
Credits: 100

Clip · 5s00:00

+5s

00:05

+5s

00:10

≈ $1.36 on the Pro plan · your original clip costs nothing

Seam 1 · at 00:05

Frame-matched

A · −1s

A · last frame

B · first frame

B · +1s

Segment B is rendered from A’s last frame, so the cut lands on an identical picture. Frames shown are an illustration — add your clip to see its real last frame.

Your clip
00:00 → 00:05
Drop a video (or its last frame) — it stays on your device
Clip length
5s
ModelWhat happens nextThe paper boat keeps drifting down the flooded gutter, leaves floating past, golden light, low camera tracks alongside
5s
50cr
ModelWhat happens nextThe boat turns and glides toward the camera between the cobbles, same paper sail, ripples spreading, steady low tracking
5s
50cr

02How it works

How the AI video extender works

Every extension here is built from the last frame of your clip — the same way editors have always matched a cut. That is why the AI video extender works with any image-to-video model, and with clips you made somewhere else.

01Step 1/3
A koi fish swims through an ink painting that comes alive
+ Push in+ Orbit+ Tracking
Grab the last frame
Drop your clip into the extender and its final frame is captured right in your browser. Nothing uploads until you choose to render.
02Step 2/3
Studio8s1080p16:9Sound on152 cr
Describe what happens next
Write the continuation, not a new scene: same subject, same light, with the action moving forward from where it stopped.
03Step 3/3
Ready · 00:08Download MP4
Render and join
The new segment starts on that exact frame. Place it straight after your clip on any editor timeline and the cut becomes a clean join.

03Which model?

AI video extend: models compared

Segment lengths decide how many AI video extender renders a long video takes. Starting from a 5-second clip, here is what it takes to reach 30 seconds on each model, priced on its cheapest image-to-video tier.

	Kling 3.0	Veo 3.1 Fast	Wan 2.5	Hailuo 02	Kling 2.5 Turbo
Segment length	3–15s	8s	5 / 10s	6 / 10s	5 / 10s
Resolution	720p · 1080p · 4K	720p · 1080p · 4K	720p · 1080p	768p · 1080p	720p · 1080p
Audio	Optional	Always on	—	—	—
From	10 cr/s	21 cr/s	9 cr/s	4 cr/s	6 cr/s
Extensions to reach 30s	2 (+25s)	4 (+32s)	3 (+25s)	3 (+26s)	3 (+25s)
Credits to reach 30s	250 cr ≈ $3.40	672 cr ≈ $9.13	225 cr ≈ $3.06	104 cr ≈ $1.41	150 cr ≈ $2.04
Best for	Hero shots, matching Kling footage	Cinematic takes with sound	Stylised motion, low cost	Action that keeps moving	Cheap tests

04Seamless joins

Make AI video extender seams invisible

Cut on calm motion

End the source clip on a moment without whip pans or fast turns. A frame full of motion blur is a poor starting picture, and the next segment inherits the smear.

Keep one model and resolution

Switching from Kling 3.0 at 1080p to Wan 2.5 at 720p mid-chain changes grain, colour and sharpness — and crossing model families changes how things move. The AI video extender warns you whenever a seam crosses models or resolutions.

Repeat the anchors

Mention the subject, wardrobe, location and time of day in every extension prompt. Each segment only sees one frame, so the words carry the continuity.

Prefer short steps

Shorter extensions drift less. Five seconds per segment balances cost and consistency; go longer only for slow, simple motion such as a drifting landscape or a steady drone shot.

05Ideas

What people extend

Need to make video longer? AI extensions work best on these four kinds of shot.

Music

Music video takes

Turn a 5-second loop into a full verse by chaining three or four extensions on the same model.

Ads

Product reveals

Start on the hero angle, then extend into a slow orbit and finish on an end-card pose.

Vlog

Travel shots

Keep a drone or walking shot going past the 15-second limit of a single Kling 3.0 render.

Story

Drama beats

Hold on a character for one more line, then give the new segment a voice with native audio.

06Cost per extension

What the AI video extender costs

Each extension is billed like a normal image-to-video render of the same length. Reusing your original clip is free, and failed renders are refunded automatically.

Model	Resolution	Credits / sec	With audio	Typical clip
Kling 3.0	720p	10	14	5s · 50 cr ≈ $0.68
Kling 3.0	1080p	13	19	5s · 65 cr ≈ $0.88
Kling 3.0	4K	47	—	5s · 235 cr ≈ $3.19
Veo 3.1 Fast	720p	—	21	8s · 168 cr ≈ $2.28
Veo 3.1 Fast	1080p	—	21	8s · 168 cr ≈ $2.28
Veo 3.1 Fast	4K	—	49	8s · 392 cr ≈ $5.33
Wan 2.5	720p	9	—	5s · 45 cr ≈ $0.61
Wan 2.5	1080p	14	—	5s · 70 cr ≈ $0.95
Hailuo 02	768p	4	—	6s · 24 cr ≈ $0.33
Hailuo 02	1080p	7	—	6s · 42 cr ≈ $0.57
Kling 2.5 Turbo	720p	6	—	5s · 30 cr ≈ $0.41
Kling 2.5 Turbo	1080p	6	—	5s · 30 cr ≈ $0.41

Example: turning a 5-second clip into 20 seconds with 1 Kling 3.0 extensions at 720p costs 150 credits (≈ $2.04 on the Pro plan).

07Rules

Extend responsibly

Only extend videos you made or have the right to use, including clips from other tools.
Extending footage of real people needs their consent. No public figures and no deceptive edits.
No sexual, suggestive or violent content. Prompts are screened before rendering, and the video models apply their own safety filters.
Clips from the AI video extender carry no watermark.

FAQ

AI video extender FAQ

Still curious? Email support@picturetovideo.org — a human replies within a day.

01What does an AI video extender actually do?

It makes a clip longer by generating what happens next. The AI video extender takes the final frame of your video, uses it as the starting picture of a new image-to-video render and follows your prompt from there. Because the new segment begins on the exact frame where yours ended, the two clips join cleanly on any editing timeline.

02How long can I make a video with the AI video extender?

There is no hard cap on a chain. Each extension adds one segment — up to 15 seconds on Kling 3.0, up to 8 on Veo 3.1 — and the extender plans five at a time. For longer pieces, render, drop the newest segment back in as your clip and keep going. Reaching 30 seconds from a 5-second clip takes 2 Kling 3.0 extensions.

03Will the extended video look seamless?

The cut itself lines up, because each AI video extender segment starts on the exact last frame of the clip before it. What can change is motion and look: speed, camera direction or lighting may shift slightly. Ending on calm motion, keeping one model and resolution, and repeating key details in every prompt keeps joins hard to spot.

04Which models can I use to extend video with AI?

The AI video extender runs on any live model here that starts from an image: Kling 3.0, Kling 3.0 Turbo, Kling 2.6, Kling 2.5 Turbo, Veo 3.1 Fast, Veo 3.1, Wan 2.5, Hailuo 02, Grok Imagine. For the smoothest chain, use the same model that made the original clip. If it came from another tool, pick the model whose look is closest and match its resolution.

05Can I extend a Kling video with Veo or Wan?

Yes — the AI video extender only needs the last frame, so any model can continue any clip. Expect the join to show, though: Veo, Wan and Hailuo render grain, colour and motion differently from Kling. For a Kling extend video job, stay on the version that made the original. Mixing works best at a hard cut, such as a new camera angle.

06How much does it cost to extend a video?

Each extension costs the same as a normal render of that length: 50 credits for 5 seconds on Kling 3.0 at 720p, or 30 on Kling 2.5 Turbo. Going from 5 to 30 seconds costs 250 credits on Kling 3.0, 672 on Veo 3.1 Fast and 104 on Hailuo 02. The AI video extender shows the total first.

07Can I extend a video for free?

Planning a chain in the extender and capturing the last frame are free. Renders use credits — there is no free tier — and an extension costs the same as a normal render of that length, so the $2.99 starter pack (200 credits) covers about 6 five-second Kling 2.5 Turbo extensions.

08Can I extend videos I didn’t make here?

Yes, as long as you have the right to use them: your own footage, clips rendered in other tools, or licensed stock. The extender only needs the final frame, which it captures in your browser. Do not extend other people’s videos, copyrighted film or TV footage, or clips of real people without their consent.

09Does the AI video extender keep the original sound?

Each segment has its own audio. Kling 3.0 and Kling 2.6 can generate sound for the new segment when audio is on, and Veo 3.1 always does, but no model continues a specific song or voice from your original clip. For music, lay one track across the joined video in your editor. Wan 2.5 and Hailuo 02 segments come back silent.