This tutorial uses a technique called end-to-start frame linking. Each shot in your story has a start frame and an end frame. The start frame is where the video begins and the end frame is where it ends.

The idea is simple. You create your first shot with a start frame showing the room in its current state. Then you add an end frame showing the next step of construction. The AI generates a video of the work happening between those two frames.

For the next shot, you link the previous end frame as the new start frame. Then you edit that same image to show the next construction step and use it as the new end frame. Repeat until you have a full timelapse.

Images can be created on the Image page for quick iterations in batches and initial brainstorming, or you can go straight to story mode and generate images directly inside your shots.

Create a new project in story mode. In your first shot, generate or upload an image of the room under construction. This is your starting point. The room should be empty with bare concrete floors and visible construction materials.

You can set the start frame by generating an image directly, linking a previously generated media item, or uploading your own photo. Use the tab bar at the bottom of the shot card to switch between Start frame, End frame, and Video.

At the bottom of each shot card you will see the tab bar. Click the + button to add an end frame tab.

After clicking +, the End tab appears. Select it to switch to the end frame view.

In the end frame tab, insert the same media item you used for the start frame. Now click the Edit Image button that appears at the top of the frame.

This opens the image editor. Use Nano Banana to prompt the first construction step: bringing in materials and laying out the path. Describe what you want added to the scene and the AI will edit the image to show that progress.

This edit creates version 2 of your media item. The start frame still points to version 1 (the empty room) and the end frame now shows version 2 (materials laid out).

Create a new shot. On the left edge of the shot card image, you will see a small link button. Click it to link the start frame to the previous shot's end frame.

When linked, you will see a small indicator at the top of the frame confirming the connection.

Now add an end frame. Insert the same media item again, but this time switch the version to the most recent one (the version from your last edit). Then click Edit Image to add the next step of construction.

Repeat this process for every construction step. Each edit adds a new version and each shot links the previous end frame as its start frame.

To add more shots, click the Add Shot card at the end of your scene.

Every time you generate or edit an image, it gets saved as a new version of the same media item. The original generation is version 1. The first edit becomes version 2. The next edit is version 3, and so on.

You can switch between versions at any time using the version selector in the settings menu. Different shots and tabs can point to different versions of the same media item. This is what makes the whole workflow possible. One media item holds every stage of construction, and each shot just references the version it needs.

For this video, we broke the remodel into seven shots. Each shot represents one stage of construction.

Here is what the full scene looks like in story mode. Each shot card has a linked start frame and an edited end frame. Notice how the end frame of each shot becomes the start frame of the next one.

Once all your frames are set, switch to the Vid tab on each shot card and write your prompt.

Type your prompt in the text box and tap the checkmark to save.

For most shots, the prompts follow a simple pattern: workers in hazmat suits performing the construction step. Keep the camera locked and describe it as a timelapse.

Here is the finished video. Seven shots chained together, each one picking up exactly where the last one ended.