Before
Two stills, a hard cut
Pose APose B
The character teleports from one pose to the other.
Video editor · AI In-between guide
Two poses in. Smooth motion out.
You have a drawing of a character with arms up and another with arms down. A fade between them looks like a slideshow. AI In-between draws the frames in the middle, so the character actually moves from one pose to the next — and the result lands on your timeline as an ordinary, editable clip.
Pose A→AI draws the in-between frames→Pose B→Your timeline
Premium and credits. Like the other AI tools in the video editor, In-between needs Premium. Each move is one short AI video render, charged in credits when it starts and refunded automatically if it fails. The price per move is shown before you confirm.
How it works
One pair of poses, one move.
A move is a short video that starts on exactly your first image and ends on exactly your second. Three poses make two moves, and because each move ends on the frame the next one starts from, a chain plays as one continuous motion.
After
A move in between
Pose AMovePose B
The poses stay as short holds; the move carries the character across.
Inside a move
The frames the AI drew
A010203040506B
You can inspect these one by one and save them as images.
The simple version
Your first in-between in six steps.
About five minutes, most of it waiting for the render.
Put the two poses side by side
Add Pose A and Pose B to the timeline as two image clips, one right after the other. Their length on the timeline becomes how long each pose is held still.
Open In-between from the cut
Open Transitions and tap the cut between the two images. The card Two still poses need in-between frames appears — tap AI in-between. Both poses are already filled in.
Say what moves
Describe the movement in one sentence, e.g. both arms lower slowly to the sides and the hands close into fists. Leave Camera locked, Background still and Same art style switched on.
Choose engine and length
Pick an engine (each shows its credits per move) and how long the move lasts on the timeline — 1s is a good start. The render is sped up to fit, never cut.
Render
Tap Render and confirm the price. Rendering takes about 1–3 minutes. You can close the sheet and keep editing; a message tells you when it is ready.
Review and add
Watch the move loop at its final speed, check the in-between frames, then tap Add to timeline. The move lands between Pose A and Pose B, and everything after it slides back to make room.
Other ways in. The In-between card in AI tools starts from the selected image and the one after it. Add media → Create with AI → In-between starts empty, for poses that are not on the timeline yet — those moves are added at the playhead.
Before you render
Poses that animate well.
Almost every bad result comes from the poses, not the settings. Four rules.
Same background, pixel for pixel
The AI animates every difference between two poses. If the room, the people behind or the light changed between your images, they will wobble or melt during the move. This is the rule that matters most.
Make the poses from one base image
Take your first image and create every other pose from it with Edit image: keep everything identical — room, people, lighting, drawing style — and only change the teacher’s arms to… Always edit from the same base, not from the previous edit, so nothing drifts.
Same size and framing
Use images with the same shape and the character in the same place. The sheet warns you when two poses have different shapes, or when an engine can only render a shape that will crop your poses.
One idea per move
A move from arms-up to arms-down is easy. Arms-up to turned-around-and-sitting is not. When a move asks for too much, add a pose in the middle — two small moves always beat one big one.
Worked example
A four-pose classroom sequence.
A teacher drawn in front of a class lowers both arms, closes the hands into fists, then turns and points at the board. Four poses, three moves, about eight seconds. Follow it once and you can build any multi-pose motion.
The finished timeline — P = pose held still, M = AI move
P1M1P2M2P3M3P4
Worked example · Step 1
Make four poses that share one background
Start from your original drawing (Pose 1, arms raised). Select it on the timeline, open AI tools → Edit image and create each other pose from that same image:
Pose 2 — halfway
Keep everything identical. Only change the teacher: both arms halfway down at shoulder height, fingers relaxed and open.
Pose 3 — arms down
Keep everything identical. Only change the teacher: both arms straight down by the sides, hands closed into fists.
Pose 4 — pointing
Keep everything identical. Only change the teacher: head turned to the board, right arm raised pointing at it, left arm down.
Already have a second drawing? If its background differs even slightly from the first, remake it from Pose 1 with Edit image instead of using it as it is.
Worked example · Step 2
Lay them out in order
Place the four images back to back on one track. The length of each clip is how long the character holds that pose.
Suggested holds
Pose 1: 1s · Pose 2: 0.5s · Pose 3: 1s · Pose 4: 2s. You can change these any time after the motion is in.
Check the order
The moves are rendered in timeline order, 1→2→3→4. Swapping two clips later means rendering again.
Worked example · Step 3
Load all four poses into one job
Open Transitions, tap the cut between Pose 1 and Pose 2, and tap AI in-between. Then add the rest:
Add Pose 3 and Pose 4
Tap Next pose → On your timeline → Pose 3. Repeat for Pose 4. You now see four poses and three arrows: Move 1, Move 2, Move 3.
Fix a mistake
Tap any pose to Replace it, move it Earlier or Later, or Remove it. Up to five poses fit in one job.
Worked example · Step 4
Direct each move
Write one shared description, then give each move its own note. A note replaces the shared text for that move only; the three locks apply to all of them.
Shared description
The teacher moves naturally and calmly. The students stay seated and still.
Move 1 note
Both arms lower from above the head to shoulder height; the fingers relax and open.
Move 2 note
Both arms continue down to the sides and the hands slowly close into fists.
Move 3 note
The head turns towards the board and the right arm rises to point at it.
Worked example · Step 5
Engine, length, render
Settings that work well for a drawn character:
Engine
Smooth Motion, listed first — it is the one sold for steady, coherent movement. Avoid any engine marked your poses get cropped.
Render length
The shortest offered. It is the cheapest, and a longer render only helps very large movements.
Each move lasts
1s. Three moves render at the same time, so the whole job takes about as long as one.
While it renders
Close the sheet and add your music or captions. If a move fails, its credits come back and you retry only that move.
Worked example · Step 6
Review like an animator
When the message says it is ready, tap Review and go through the moves one by one with the Move 1 / 2 / 3 tabs.
Watch the loop
The preview plays at the final speed. Look at hands and fingers first — that is where AI motion breaks.
Read the frames
Set In-between frames to 12. The strip shows the frames the AI drew between the two poses, framed by the poses themselves. A background that changes across the strip means the poses were not identical.
Redo only what is wrong
Redo renders a single move again with the same settings. The other moves are kept.
Keep the frames
Save frames to Photos writes those frames as PNG images to the Imaginatron album — useful as clean key drawings, or as poses for a second pass.
Worked example · Step 7
Add it and tighten the timing
Keep Between the poses selected and tap Add to timeline. Everything is a single undo step.
Continuous motion
For no pause at Pose 2, delete the Pose 2 still and drag Move 2 left to close the gap. Move 1 ends on exactly the frame Move 2 starts with, so the join is invisible.
Slower or faster moves
Open a move clip and change its speed — a 4-second render placed at 1s plays at 4×, so setting 2× makes it last 2s. The whole move still plays. Don’t trim a move’s edges instead: that cuts off the start or the end of the motion.
Export
Export as usual. The moves are ordinary video clips now, so filters, captions and music apply to them like anything else.
Reference
Every setting, in one table.
| Setting | Options | What it does |
|---|---|---|
| Poses | 2 to 5 images | Each pair next to each other becomes one move. From the timeline, Photos, Camera or Creations. |
| What moves | Free text + a note per move | The movement in plain words. A move’s note replaces the shared text for that move. |
| Camera locked | On by default | No zoom, pan or cut. Also sets the engine’s fixed-camera option when it has one. |
| Background still | On by default | Tells the engine that only the character moves. |
| Same art style | On by default | Asks for the same design, colours and line art in every frame, with no morphing. |
| Engine | Server list, credits per move | Only engines that accept a start and an end frame are shown. |
| Render length | Engine’s options, shortest first | How long the AI renders. Longer costs more. |
| Each move lasts | 0.5s – 3s, or Natural | Time on your timeline. The render is sped up to fit, up to 8×. |
| In-between frames | 4, 8, 12 or 24 | How many drawn frames the review strip shows and Save to Photos writes. |
| Place on the timeline | Between the poses / At the playhead | Between inserts each move after its pose and pushes later clips back. Playhead touches nothing else. |
Troubleshooting
When a move comes out wrong.
The background wobbles or melts during the move.
The two poses do not share an identical background. Remake them from one base image with Edit image (see “Before you render”), and keep Background still on.
Hands and fingers come out distorted.
The move asks for too much at once. Add a pose in the middle so each move is smaller, and keep Same art style on. Hand shape changes — pointing to a fist — work best with their own move.
The move jumps against the still before and after it.
The engine rendered a different shape from your poses. Pick an engine without the poses get cropped warning, and use poses of the same size.
It says the move is “the shortest it can be”.
A move plays at most 8× faster than it was rendered. Choose a shorter render length, or a longer move.
“Between the poses” is greyed out.
A pose was moved or deleted on the timeline after you started. Use At the playhead, or put the poses back in order.
A move failed.
Its credits are returned automatically. Tap Retry on that move — the others are kept.
I closed the app while it was rendering.
Renders keep going on the server and are saved to My Creations, so a finished move is never lost. Add it to the timeline from there.
Need exact control of every joint?
In-between is the fastest way to make two drawings move. When you want to set the angle of a shoulder, elbow and wrist yourself, split the character into parts and animate it in 2D Animation instead.