AI Video Extender

Continue the shot you already like instead of regenerating it. Add a lead-in before the first frame or an ending after the last, and use a short prompt to decide what happens next.

  • No reshoot
  • Lead-in or ending
  • Your next beat
Extend by
5s
Trailing extension sample: 5 seconds past the last frame, source untouched
Per run
+2–20 s
Before the first frame or after the last; run again on the result to go further
Source clip
MP4 or MOV
Up to 50 MB, 2–30 seconds, 60 fps
Output
Same size and frame rate
One MP4 with your clip and the new seconds joined
Credits
20 per output second
Source plus added seconds are all billed; 10 free credits to start

Examples

What can you do with an AI video extender?

The extender reads the frames next to the join, including subject, motion, light and camera speed, and continues from there. The new seconds play as part of the same shot, not a freeze frame or a slowed-down copy.

Extend the end

Let the product shot finish before the cut

An ad often stops the moment the product lands, leaving no room for the logo, price or call to action. Continue past the last frame so the motion settles on its own; the seconds you already had stay exactly as they were.

Extend your clip

Extend the start

Add a lead-in before the first frame

Some clips open straight on the action, with no space for a title card or the first line of a voice-over. Extend at the start and the new seconds lead into your opening frame, such as two still seconds in the blocks before the starting gun.

Extend your clip

Prompt-guided

Decide what happens next with one sentence

The clip sets the look; your prompt sets the next beat. Write one event, for example “the kitten reaches up to bat the wind chime”, and the extension plays it out with the same light, framing and camera height.

Extend your clip

AI-generated clips

Keep a short AI take instead of rerolling it

Most generators return 5 to 10 seconds per shot, and a longer reroll rarely matches the take you liked. When the light, character and camera are right and only the last beat is missing, extend that clip by a few seconds rather than generating the whole shot again.

Extend your clip

How it works

How do you extend a video with AI?

Three choices, and the cost is shown before you run.

  1. Upload the clip

    Drop in an MP4 or MOV, or send a result from the AI Video Generator. The clip you upload is the anchor; its frames are not regenerated.

  2. Choose length and direction

    Pick 2 to 20 seconds and whether they go before the clip or after it. Add a prompt only if you want to steer the new seconds.

  3. Run and compare

    Check the original against the longer cut side by side or with the compare slider, then download the result.

How should you write an extension prompt?

The original video controls continuity; your prompt only controls what happens next. Leave it empty and the scene simply carries on.

Works well

  1. Describe one new beat

    “She turns toward the window” or “the camera pulls back to show the room” gives the new seconds one clear direction.

  2. Repeat the lighting and color words

    Adding “warm afternoon light, soft film grain” helps the extension hold the same grade across the join.

  3. Leave it empty to carry on

    Product spins, landscapes and slow camera moves often continue best with no prompt at all.

Avoid

  1. Switching scene, character or time of day

    A new location or a night sky after a daytime clip has nothing in the frames to attach to, so the join breaks.

  2. Packing several events into one run

    A whole sequence in one prompt gets rushed. Extend once per beat and review each result before the next.

  3. Retelling what already happened

    Describing the existing shot or what should stop happening competes with the footage. Say what comes next.

Prompts can run up to 2500 characters, but one or two sentences are usually enough.

What are the video extender specs?

Everything the extender accepts, adds and returns, in one place.

What are the video extender specs?
Input
MP4 or MOV · 2–30 s · up to 50 MB · up to 60 fps
Per run
+2–20 s, before the first frame or after the last
Prompt
Optional, up to 2500 characters; empty just continues the scene
Output
One MP4 at the source's resolution and frame rate; original audio kept

Tools for the longer cut

Tools for the steps that usually come before or after an extension.

  • AI Video Generator

    Generate a clip from a prompt, a still image, a reference or existing footage.

    Open tool
  • Video Upscaler

    Raise a clip to 1080p or 4K and sharpen detail frame by frame.

    Open tool
  • Motion Control

    Give a character image the performance from a reference clip.

    Open tool

Video extender FAQ

Length, direction, prompts, consistency and cost.

How many seconds can I add to a video?+

Between 2 and 20 seconds per run. To go longer, extend the result again; each run is billed only for the seconds it adds.

Can I add footage before the clip instead of after it?+

Yes. Choose “Before the clip” and the new seconds lead into your first frame. It is the usual choice when a title card, an intro line or a slower opening needs room.

Do I need to write a prompt?+

No. Without a prompt the scene continues on its own. Add a sentence when you want a specific action or camera move in the new seconds.

Will faces or colors drift if I keep extending?+

Each run continues from the frames at the join, so small changes can build up with every extension. In practice, close-ups of faces hold up for about two extensions in a row and landscapes or products for about three. For a longer scene with the same character, plan separate shots in the AI Video Generator rather than chaining one clip.

Will the original part of my video change?+

No. Your clip is not regenerated; only the added seconds are new. The result is one MP4 at the same resolution and frame rate as your source.

How is video extension priced?+

You pay 20 credits per output second (source plus added seconds). The total is shown before you run, and credits are returned automatically if a run fails.

Which clips extend best?+

Continuous single shots with steady motion, such as product spins, landscapes, walking or slow camera moves. A hard cut or very fast action right next to the join gives the extender less to continue from.

What can't the video extender do?+

It adds footage only at the start or end, so it cannot repair frames in the middle of a clip. It does not create sound for the new seconds; add music or voice-over in your editor. Source clips must be MP4 or MOV, up to 50 MB, 2 to 30 seconds long and at most 60 fps.

Ends too soon?

Give your clip the seconds it needs

Upload a clip, choose how much to add and where, and see the cost before you run. New accounts start with 10 free credits.