AI Video Editing in Three Sizes
Three sizes at a glance
| Size of change | The unit that changes | How | What is re-made | Cost shape |
|---|---|---|---|---|
| A line of dialogue | One segment’s spoken lines | Edit this clip, Redub; or edit the line and regenerate | Sound only with Lip sync; the whole clip with Re-perform or a regeneration | 1 credit a second of clip for lip sync; 2 times the tier price for re-perform |
| A shot | A segment, because a segment is one generation holding several numbered shots | Edit that shot’s text and regenerate; or Trim; or AI visuals | That segment only | The segment’s seconds at the tier price; trim 5 credits |
| A whole episode | The text of every segment you pick | AI edit then Apply to the whole episode… | Nothing until you regenerate; then only the segments that changed | 1 credit per revised segment, then the segments you choose to make again |
The sizes are nested. A change to the whole episode is a set of changes to segments, and a change to a segment can be as small as one line. The skill is choosing the smallest size that does the job, because each step up re-makes more and costs more.
A line: redub it, or rewrite and regenerate
The fastest fix for a wrong word is on the finished clip. Select the segment, open Edit this clip, choose Redub, and every spoken line is listed with its speaker, a voice pill and a text box. Change the words, check the voice, choose a method and press Redub into a new version.
| Lip sync | Re-perform | |
|---|---|---|
| Picture | Unchanged; the mouths are moved to the new audio | Played again with the new lines; can change a little |
| Sound | All the segment’s lines are voiced again from the start, with short pauses. The clip’s own ambience is not kept | Timing and delivery fit the words |
| Price | 1 credit per second of the whole clip | 2 times the clip tier’s per-second price |
| Limit | The new lines must fit the clip: too long and it stops before charging | Clips of 15 seconds or less only |
Two details change how you work. Because lip sync voices every line, a one-word fix still re-voices the segment, so read the other lines in the new version. And the changed words are written back into the storyboard text, so if you regenerate the segment later it says the new line. A box you empty is not a deleted line: the original words come back when you click away. If the delivery is wrong rather than the wording, rewrite the line in the storyboard and regenerate, which costs the segment’s full price but can change the performance. Change a line after the video is made.
A shot: the unit is the segment
A segment is one generation of 15 or 30 seconds, and inside it the storyboard numbers the shots with durations that add up to the segment’s length. You cannot regenerate shot 3 alone; you edit shot 3’s text and make the segment again, and the others in the episode are untouched. Every take is kept, so you can compare and switch back.
| The problem is | Use | Why |
|---|---|---|
| The clip starts early, runs on, or stumbles in the middle | Trim, Keep or Remove | Cut to the exact frame; nothing new is generated; the original stays |
| The right shot, but the colour, time of day, weather, background people, lights, a scar, an expression or who plays a part is wrong | AI visuals | A fixed menu of eight changes that come out reliably; everything else about the shot carries over |
| The framing, camera angle or where people stand is wrong | Edit the shot text, then regenerate the segment | No fix on a finished clip can change them |
| A person who should not be there, or words that appeared in the picture | Edit the shot text and regenerate | Same reason |
| A good clip, just soft | Enhance | The same take, one resolution step up |
On a 30-second clip the picture changes apply to the first or the second half, and you pay for that half only. Each kind of fix keeps one version per segment, a second trim replaces the first trim, and the generated clip underneath is kept for as long as a fix made from it exists. Edit this clip · How the versions fit together.
A whole episode: one request, every segment
Some notes apply from the first segment to the last: a way of speaking, a word someone keeps using, a sound that should sit under a whole scene, a pace that drags. For those, open AI edit on any segment, write the request and press Apply to the whole episode…. Everything it can revise is listed and ticked; untick what should stay. The Start button carries the most the run can cost.
- The request runs on each picked segment against that segment’s own text. It never rewrites the episode as one block.
- Each row comes back as revised, no change needed or failed. A segment that needs no change is not charged, and nor is a request the text cannot fulfil.
- Open a row to see the difference line by line. You can stop at any time; segments not started are dropped without charge.
- Save every revision at once, or save row by row. Nothing reaches your script until you save, and History can put the old text back.
- Saving changes the text only. The segments still play the old takes, so regenerate the ones you care about, and then export the episode again.
The price is 1 credit per revised segment, then the segments you regenerate at their normal price. Revise the whole episode: one request, every segment.
The note decides the size
| The note says | Size | First move |
|---|---|---|
| “She should say Friday.” | A line | Redub with Lip sync |
| “He looks terrified in the second half.” | A shot | AI visuals, the expression change, on the second half |
| “Cut the pause before the last line.” | A shot | Trim with Remove |
| “It should be raining in this scene.” | A shot, or several | AI visuals for the weather; or a text request over the scene |
| “Everyone sounds too formal.” | An episode | Apply to the whole episode… with one request, then review |
| “The ending lands wrong.” | A segment or two | Edit the text of the last segments, then regenerate those |
| “Make it a different genre.” | A new project | The type is fixed after the read; start again with the same script |
The last row is the edge of the system. The project’s type and aspect ratio are decided before the text is read and cannot be edited afterwards, because the episodes were cut and written for them. For another shape, start a new project with the same script; the cast can come across from the asset library.
The safety nets
Three things make larger edits less risky than they look. Every generation is kept as a take, switching between them is free, and takes that are not active are cleaned up only after 90 days. The text history keeps the original and the text from before your last five changes. And an AI revision is shown to you, with a line-by-line difference, before it reaches the script.
The one button that throws work away is regenerating an episode’s storyboard. It rebuilds every segment, discards the finished videos and their takes, and is not refunded. If the problem is in the wording, edit the wording. Regenerate a storyboard: what you lose · Text history.
FAQ
Can AI edit a video after it is made?
Yes, in set ways: trim it, change one thing in the picture from a menu of eight, change a line or a voice, raise the resolution one step, or revise the storyboard text and make the segment again.
What is the smallest edit?
A single spoken line, fixed with a lip-sync redub, or a trim that cuts a moment. Both keep the picture you already have.
Can I fix one shot without remaking the whole segment?
Not by regenerating. A segment is one generation. You can trim it, apply one of eight picture changes to it, or edit the shot’s text and make the segment again.
How do I change something across the whole episode?
Open AI edit, write one request and press Apply to the whole episode. It runs on each segment you pick, shows the differences and saves nothing until you do.
Does editing the text change the video?
No. The clip keeps playing the old take until you regenerate that segment.
What does editing cost?
Editing text by hand is free. An AI revision is 1 credit. A trim is 5 credits, lip sync is 1 credit a second, and picture changes cost 2 times the tier’s per-second price.
Can I change the genre or the aspect ratio of a finished project?
No. Both are fixed once the text has been read. Start a new project with the same script.
Will I lose my earlier version if I edit?
No. Every fix is a new take and the clip you started from is kept. Only regenerating the whole storyboard removes finished videos.
Pick the smallest edit that works
A line, a shot or an episode: each step up re-makes more.
Updated November 2, 2026