How is this different from a timeline editor?

Timeline editors arrange footage: cuts, transitions, text, overlays. An AI video editor changes the footage itself — it can repaint the entire clip in a new style, replace things inside the shot, or continue the shot past its last frame, which timeline tools can't do without heavy VFX work. Most creators use both: re-render shots here, then assemble them in a timeline.

What edits can it make?

Three families: global style transfer (live action to watercolor, anime, or film looks), local replacement (swap outfits, objects, or background elements), and extension (continue a clip past its last frame). Attach reference images to show exactly what the result should look like.

Which AI models can edit video on Molyin?

7 editing models share the same studio: HappyHorse Video Edit for restyles and swaps at up to 1080p, Seedance 2.5 and 2.0 for instruction edits and extensions at friendly prices, Wan 2.7 for quick edits on short clips, and FLUX 3 Extend for continuing a shot with native audio.

Can AI extend a video?

Yes. Extend models continue your clip past its last frame instead of re-rendering it: Seedance 2.5 Extend takes a shot up to 30 seconds total, Seedance 2.0 Extend is the most affordable way to add seconds, and FLUX 3 Extend carries the sound forward with native audio. Describe what should happen next and the new footage picks up exactly where yours ends.

What are the source video requirements?

It varies by model — accepted source clips range from 1 to 15 seconds, up to 100MB. Edit models keep your clip's length and aspect ratio; extend models add new seconds after it. For longer footage, edit it in segments and assemble the results.

How much does an AI video edit cost?

Billing follows your source clip's length. HappyHorse Video Edit runs 47 credits per second at 720p or 83 at 1080p — a 10-second 720p edit is 470 credits — and lighter models start at 11 credits per second. The exact estimate appears before you submit, and failed generations are refunded automatically.

Will the edited video keep the original motion?

Yes — that is the point of video-to-video editing. The model re-renders frames while carrying over the source clip's motion, camera work, and timing, so the edit looks shot that way rather than pasted on.

Can I use edited videos commercially?

Yes. All paid plans include commercial usage rights, and every download is a clean, watermark-free MP4.

AI Video Editor

Upload a clip, type the change, get a re-rendered video. Molyin's AI video editor rewrites footage you already have — restyle a whole shot, swap a single detail, or extend it past the last frame — with editing models from HappyHorse, Seedance, Wan and FLUX 3.

Output length follows the source video (3–15s).

Failed generations auto-refunded
Credit packs never expire
Every model's price is public
Cancel anytime in one click

7
Editing models: 1–15 s
Source clip: 1080P
Output up to: 11 cr/s
Credits from

Real Edits, Real Instructions

Finished edits paired with the exact instruction that produced them — one re-colors a whole scene to match a reference image, the other swaps a product mid-shot without touching the camera work.

HappyHorse Video Edit
Video edit
8s
1080P

Recolor the scene using the reference image's style

Seedance 2.0 Video Edit
Video edit
5s
720P

Replace the perfume in the gift box in 视频1 with the face cream from 图片1, keeping the camera moves unchanged

What Is an AI Video Editor?

An AI video editor changes finished footage with instructions instead of timelines. Where a traditional editor makes you cut, mask, keyframe, and grade by hand, a video-to-video model reads your clip and your instruction, then re-renders every frame to match — the edit is described, not performed.

Molyin's editor is not tied to a single engine. HappyHorse Video Edit handles global restyles and local swaps in one pass at up to 1080p; Seedance 2.5 and 2.0 bring instruction editing plus extension — continuing a clip past its last frame; Wan 2.7 covers quick edits on short clips; and FLUX 3 Extend lengthens footage with native audio. Because these models re-render the clip rather than pasting an overlay on top, edits hold up frame after frame: motion, camera moves, and timing carry over from your source untouched.

Editing and generating live in the same studio: when you need brand-new footage instead, the AI video generator creates shots from text, images, and references with the same credits. Editing bills by clip length, and every paid plan on the pricing page includes commercial usage rights.

Which Model for Which Edit

Two ways to change a clip: edit models re-render the frames you already have, extend models continue the shot past its last frame.

Model	Edit type	Source clip	Output
HappyHorse Video Edit	Restyle & replace	3–15 s	Same length, 720P / 1080P
Seedance 2.5 Video Edit	Restyle & replace	3–15 s	Same length, 480P / 720P
Seedance 2.5 Extend	Extend the shot	3–15 s	Up to 30 s total, 480P / 720P
Seedance 2.0 Video Edit	Restyle & replace	3–15 s	Same length, 480P / 720P
Seedance 2.0 Extend	Extend the shot	3–15 s	Up to 15 s total, 480P / 720P
Wan 2.7 Video Edit	Restyle & replace	2–10 s	Same length, 720P / 1080P
FLUX 3 Extend	Extend with native audio	1–15 s	5–20 s total, 720P / 1080P

Edit models bill by your source clip's length; extend models bill the new seconds they generate plus the source they read.

How to Edit a Video with AI

Three steps from source clip to re-rendered MP4 — most edits finish in minutes.

1
Upload Your Clip
Drop in a short source video — each editing model lists the clip length it accepts. The output keeps your clip's length and aspect ratio.
2
Describe the Edit
Write the change in plain language — "repaint this street as watercolor" or "swap the jacket for @Image1" — and attach reference images when the look is specific.
3
Generate & Download
The model re-renders every frame in minutes. Preview the result, download the watermark-free MP4, or iterate with a tweaked instruction.

AI Video Editor vs. Timeline Editor

They solve different problems: one changes the pixels inside your footage, the other arranges footage on a timeline.

	AI Video Editor (Molyin)	Timeline Editor
Skill required	A sentence describing the change	Cutting, masking, keyframing, grading
Time per edit	Minutes — the model re-renders in one pass	Hours of manual work per shot
What it changes	The pixels themselves: styles, objects, outfits, length	The arrangement: cuts, transitions, overlays
Best for	Restyling, rewriting and extending existing shots	Assembling multi-clip stories with precise cuts

The two are complements, not rivals — many creators re-render shots on Molyin, then assemble them in a timeline.

Editing Credits, Per Second

Every editing model bills by the second, and failed generations are refunded automatically.

AI video model credit rates by resolution — credits per second and per-clip examples
Model	Resolution	Credits/sec	5s Video	5s Video + 3s Reference
HappyHorse Video Edit	720p	47	235 credits	Billed by source video length
HappyHorse Video Edit	1080p	83	415 credits	Billed by source video length
Seedance 2.5 Video Edit	480p	30	150 credits	Billed by source video length
	720p	67	335 credits	Billed by source video length
	1080p	166	830 credits	Billed by source video length
Seedance 2.5 Extend	480p	15	75 credits	120 credits (3s source video billed in full)
	720p	34	170 credits	272 credits (3s source video billed in full)
	1080p	83	415 credits	664 credits (3s source video billed in full)
Seedance 2.0 Video Edit	480p	22	110 credits	Billed by source video length
Seedance 2.0 Video Edit	720p	47	235 credits	Billed by source video length
Seedance 2.0 Extend	480p	11	55 credits	88 credits (3s source video billed in full)
Seedance 2.0 Extend	720p	24	120 credits	192 credits (3s source video billed in full)
Wan 2.7 Video Edit	720p	36	180 credits	Billed by source video length
Wan 2.7 Video Edit	1080p	60	300 credits	Billed by source video length
FLUX 3 Extend	720p	91	455 credits	455 credits (source video free)
FLUX 3 Extend	1080p	118	590 credits	590 credits (source video free)

Video-extend models (Seedance 2.5 Extend / Seedance 2.0 Extend) bill the new footage plus the source video seconds at the full per-second rate.
Video-extend models (FLUX 3 Extend) never bill the source video — only the newly generated seconds are billed, at the extend rate shown above.

Subscription plans and one-time credit packs are compared side by side on the pricing page.

See prices for every model on the credits page

AI Video Editor FAQ

Everything about editing video with AI on Molyin.

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