Use AI Video Extender to generate a new clip before or after a video you already have. Upload a source file, choose a direction, and edit the new footage in yourself.
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One more shot from a clip you already have
What Is AI Video Extender?
AI Video Extender on ZMS reads a single frame from a video you upload, then generates a new clip that continues from that frame or leads into it. AI Video Extender returns the new footage as a separate file, which you join to your source in your own editor. AI Video Extender never stitches, re-times, or remixes the video you upload, so your original file is left exactly as it was.
Extend after video
Continue past the last frame
For an after-extension, AI Video Extender reads the closing frame and treats it as the opening of the new clip. Reach for AI Video Extender here when an action, a camera move, or a reveal stops before it finishes: the runner is still walking, the vehicle is still leaving, the arm is still reaching.
Source clip — closing frame
Four steps
How to Use AI Video Extender
Every AI Video Extender task starts from footage you already own. For longer production reading, see the ZMS tutorials.
1
Upload your source clip
Give AI Video Extender an MP4, WebM, or MOV file up to 100 MB. AI Video Extender reads one frame from it inside your browser, so the video itself is never sent to the model.
2
Choose a direction and describe the new moment
Tell AI Video Extender whether the footage goes after or before your clip, then describe only the new action or camera move. Do not re-describe the whole scene.
3
Choose 5 or 10 seconds and 768p or 2K
AI Video Extender has no framing control. It follows the orientation of your source, so the new clip may not match its exact pixel size.
4
Generate, download, and edit
Sign in and submit, then collect the finished AI Video Extender clip in Tasks or My Creations. Join it to your source in your editing software.
AI Video Extender Examples
Three verified AI Video Extender results. Use example loads the source clip and prompt without generating. To make a clip from scratch, open the AI video workspace.
Extend after · 5s · 768p
Continue the walk
The source stops when the runner looks across the water, so the walk still needs one more beat.
Prompt used
The man in the yellow jacket and black beanie walks slowly along the wet path beside the lake, still looking across the water. Keep the same overcast fog, bare trees, and shoulder-height follow. No new people, no weather change, and no text.
What changed The clip continues from the lakeside stop. The yellow jacket, beanie, and overcast lake hold.
Extend after · 5s · 768p
Follow the truck
The truck and camera are still moving when the clip runs out.
Prompt used
The pickup keeps driving straight down the empty desert highway and grows smaller in the frame. Hold the low rear camera, the pale road, and the late-day light. No other vehicles, no turns, and no text.
What changed The clip keeps the low rear follow as the pickup recedes. No other vehicles or turns appear.
Extend before · 5s · 768p
Approach the gallery
The source already opens on the first painting; the missing beat is the approach on the same rightward track.
Prompt used
Continue the same slow left-to-right glide along the white gallery wall. Start just before the first large blue-and-green abstract painting fills the left of the frame, then travel toward the far end until that canvas sits large on the left with two more paintings receding. Do not pan left or reverse. Keep the polished floor, quiet ceiling lights, and a steady lateral move. A distant visitor may appear far down the hall. No text.
What changed The lead-in starts further left on the white wall, then glides right until the first painting matches the source opening.
What the tool does and does not do
AI Video Extender Features
AI Video Extender offers two directions, two lengths, and two resolutions. Everything else is decided by the frame it reads from your source.
Two extension directionsAI Video Extender generates footage after your clip or before it. It reads the closing frame for one direction and the opening frame for the other, so one source can serve either end of your edit.Source clip — closing frame
Fixed output settingsAI Video Extender offers 5 or 10 seconds at 768p or 2K, and no aspect ratio control. The frame you supply establishes the framing, and the new clip may differ in pixel size from your source.Source clip — opening frame
New footage, not replayed framesLooping, slow motion, and freeze frames all reuse pictures you already have. AI Video Extender generates motion that did not exist before, which is why AI Video Extender can finish an action and also why light and movement can shift after the join.Source clip — closing frame
Where an extra clip helps
Use Cases for AI Video Extender
AI Video Extender is most useful when an edit needs real additional footage rather than more playback time.
AI-generated clipsGenerated video often stops on a fixed duration rather than at the end of the action, so AI Video Extender is a direct way to let the movement complete.Reference still — generated clip
Cinematic scenesWeather, crowds, and camera moves frequently need one more beat before a cut feels earned. AI Video Extender supplies that beat as new footage.Reference still — cinematic scene
Product shotsA rotation or a pour that ends early leaves nowhere to place the product name. AI Video Extender buys those seconds back.Reference still — product shot
Social videoVertical edits often need a few extra seconds to complete a hook, and AI Video Extender keeps the orientation of the source.Reference still — vertical edit
Marketing editsCampaign timelines run short of usable shots long before they run short of ideas, which is where AI Video Extender earns its place.Reference still — campaign footage
B-rollA strong cutaway shorter than the sequence it supports can go through AI Video Extender instead of being replaced.Reference still — cutaway
Three checks before you cut
Check Your New Clip
The join is the only frame AI Video Extender guarantees will match. Inspect these three things before committing the new clip to your timeline.
1
The join frame
Play across the cut point. The shared frame should line up because AI Video Extender took it from your source; anything that jumps immediately after it belongs to the generated section.
2
Motion and light
Watch the camera path, the subject, and the lighting. If they drift, describe the movement more explicitly and run AI Video Extender again rather than accepting the take.
3
Soundtrack and frame size
The clip AI Video Extender returns carries its own audio and will not continue your original sound. Its pixel dimensions can also differ from the source, so set both tracks to one frame size in your editor.
Before you upload
AI Video Extender FAQ
Common AI Video Extender questions about files, output, continuity, and cost.
What is an AI Video Extender?
AI Video Extender generates a new clip from one frame of a video you already have. The frame supplies the join, and your prompt describes the action or camera move the new footage should contain.
Do I get one longer finished video?
No. AI Video Extender returns a separate clip. This site does not stitch or mix audio, so joining the new footage to your source happens in your own editing software.
Can I continue a video after it ends?
Yes. Choose Extend after video and AI Video Extender reads your closing frame as the first frame of the new clip.
Can I add footage before a video starts?
Yes. Choose Extend before video and AI Video Extender turns your opening frame into the last frame of the new clip, which creates a lead-in to the scene you already have.
Which video files can I upload?
Give AI Video Extender a file your browser can play, up to 100 MB. MP4 with H.264 and WebM are the most reliable. Some MOV files and less common codecs cannot be decoded in the browser, and AI Video Extender reports that clearly instead of failing quietly.
What output settings can I choose?
AI Video Extender offers five or ten seconds, at 768p or 2K. There is no framing option because the frame read from your source establishes it.
Will the new clip match my video seamlessly?
The frame at the join comes from your source, so that point matches. After it, lighting, camera movement, and subject motion can all shift. AI Video Extender may also return different pixel dimensions than your source, so expect to align both in your editor rather than plan on one continuous take.
Does the new clip keep my original audio?
No. The section AI Video Extender generates carries its own audio and will not continue your dialogue, room tone, or music. Handle sound on your timeline.
How should I describe the new footage?
Give AI Video Extender only what happens next, or what led in. Name the subject and the camera behavior you want preserved, and avoid restating the entire scene the source already shows.
How much does AI Video Extender cost?
The estimate for your current settings appears on the generate button before you submit. For current credit packs, see the ZMS credit plans. Uploading a clip and reading a frame from it cost nothing on their own. Details on how uploads and prompts are handled are in the privacy policy.