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An original red sports car on a coastal road with trailing continuation frames suggesting the clip extending

AI Video Extender

Continue a clip from its last frame with Seedance 2.0, then edit and trim the generated result directly.

Seedance 2.0

How do I extend a video with AI?

Bring your clip into Renoise, then run it through Seedance 2.0 with extend (last-frame return): the model takes the final frame as its start and generates a new 4–15 second segment that continues the action. Generated video clips can be edited and trimmed directly in Renoise.

Starting from a single still rather than a clip? See the AI photo to video AI tool

Extend at a glance

Continue a clip

Seedance 2.0 extends from your footage or its last frame, carrying the action forward.

4–15s per segment

Each generated continuation runs 4–15 seconds and can be edited and trimmed directly.

6 aspect ratios

Extend in 21:9, 16:9, 4:3, 1:1, 3:4, or 9:16 — matched to where the video runs.

Try in Renoise

Extend a video in 3 steps

How we recommend continuing an existing clip. Each pass adds one 4–15s segment; repeat to go longer.

  1. Selecting Seedance 2.0 from the Renoise Canvas model selector to extend a clip
    Step 1

    Pick Seedance 2.0

    Drop your clip into Canvas and select Seedance 2.0 from the model bar — it supports extend and last-frame return.

  2. Choosing an aspect ratio that matches the source video before extending it in Renoise
    Step 2

    Set ratio

    Match the source aspect ratio (e.g. 9:16 for Shorts), then write a one-line prompt for what happens next.

  3. Renoise model selector with Seedance 2.0 chosen for video extension
    Step 3

    Generate and refine

    Generate a 4–15 second continuation from the last frame, then edit and trim the result directly in Renoise.

Try in Renoise

Extending a clip

Cinematic frame of an original astronaut on a misty alien landscape — the first segment

Original segment

Start from your first clip.

The same original astronaut continuing toward a glowing crystal formation, a seamless continuation

Continued tail

Generate the next segment from the last frame.

Three connected drone frames over a misty forest showing continued forward motion

Video editing and trimming

Edit and trim each generated continuation directly in Renoise.

An ocean wave's final frame beside its continuation rolling further onto the shore

Last-frame return

The seam stays continuous in pose and lighting.

Try in Renoise

Extending vs. upscaling: what an AI video extender actually does

These two get confused often, so it is worth separating them. Upscaling raises a video's resolution — it adds pixels to footage you already have, but no new time. Extending does the opposite: it adds new time. An AI video extender keeps the resolution as-is and generates fresh frames after your clip ends, continuing the motion, subject, and scene rather than sharpening them. If your goal is "make this video longer," extending is the job; if it is "make this video sharper," that is a different tool.

In Renoise, extending runs on Seedance 2.0's extend and last-frame return. The model reads the final frame of your clip — pose, lighting, camera position — and uses it as the opening frame of the next segment, so the seam between them stays continuous instead of cutting to an unrelated shot. You steer each pass with a one-line prompt for what should happen next.

One honest limit: each pass produces a 4–15 second segment, not an arbitrarily long video. Generated video clips can be edited and trimmed directly in Renoise. Continuity is strong frame-to-frame but not guaranteed — fine details can drift across a long chain, so review each seam as you build.

Choose your plan

One plan unlocks Seedance 2.0 and every model you extend with.

Starter

30% OFF

For first-time AI content creators

$20$14/mo

Billed $168 annually

Upgrade Plan

Save $72/year

1,200 credits released monthly
✓
No Unlimited generation
✓
Unlimited Concurrent Generations
✓
Renoise Agent Beta
✓
Unlimited LLM Chats
✓
Commercial Use
✓
Watermark-free exports

Standard

30% OFF

For creators shipping content every week.

$60$42/mo

Billed $504 annually

Upgrade Plan

Save $216/year

3,600 credits released monthly
✓
2 days of Unlimited each month
Unlimited models:
Hailuo H3 (768p)
Seedance 2.0 Mini (480p, 720p)
Seedream 5.0 Pro (1k)
Seedream 5.0 Lite
✓
Unlimited Concurrent Generations
✓
Renoise Agent Beta
✓
Unlimited LLM Chats
✓
Commercial Use
✓
Watermark-free exports
Best Value

Advanced

20% OFF

For studios and pros producing at commercial scale.

$200$160/mo

Billed $1920 annually

Upgrade Plan

Save $480/year

14,000 credits released monthly
✓
7 days of Unlimited each month
Unlimited models:
Hailuo H3 (768p)
Seedance 2.0 Mini (480p, 720p)
Seedream 5.0 Pro (1k)
Seedream 5.0 Lite
✓
Unlimited Concurrent Generations
✓
Renoise Agent Beta
✓
Unlimited LLM Chats
✓
Commercial Use
✓
Watermark-free exports

Renews automatically each year until canceled.

An original red sports car on a coastal road with trailing continuation frames suggesting the clip extending

Extend your first video

Watermark-free on any paid plan.

Open CanvasRead the Seedance 2.0 docs

Frequently asked questions

1.How do I make a video longer with AI?

Run your clip through Seedance 2.0 in Renoise using extend (last-frame return). The model continues from the final frame to generate a new 4–15 second segment. Generated video clips can be edited and trimmed directly in Renoise.

2.How long can an extended segment be?

Each generated segment is 4–15 seconds on Seedance 2.0. Generated video clips can be edited and trimmed directly in Renoise.

3.Does the extension match the original clip?

Last-frame return uses your clip's final frame as the next segment's start, so the seam stays continuous in pose, lighting, and framing. Continuity is strong frame-to-frame but not guaranteed — fine details can drift across a long chain, so review each seam.

4.Can Renoise upscale a video to 4K?

No. Renoise extends videos — it adds new time, not resolution. An extender continues your footage; it does not upscale it. Seedance 2.0 outputs at 720p or 1080p, and 4K applies to image models, not video.

5.What aspect ratios can I extend in?

Seedance 2.0 supports 21:9, 16:9, 4:3, 1:1, 3:4, and 9:16. Match the source clip's ratio when you extend — for example 9:16 for TikTok or Shorts, 16:9 for YouTube — so the continuation frames the same way.

6.Can I extend a video that has a real person in it?

Video models block reference media with a real human face. If your clip shows a real person you hold rights to, clear their likeness through FacePass first; then you can continue the clip with that cleared face referenced across segments.

7.Can I edit and trim an extended segment?

Yes. Every generated continuation can be edited and trimmed directly in Renoise.

By Peyton, RenoiseLast reviewed Models verified: Seedance 2.0

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