5. Add a flash between scenes

You now want a flash between the morning and meadow while keeping the cut to evening unchanged. The transition needs those first two scenes as separate Video values. Individual named clips now become useful.

Continue editing learning.clipasm from Transform one scene.

1. Name each scene

Replace the pictures clip and its reference with three scene clips:

clip {
    image("assets/morning.png", 1500ms, contain)
} as morning

clip {
    image("assets/meadow.png", 1500ms, contain)
    zoom_in(4%)
} as meadow

clip {
    image("assets/evening.png", 1500ms, contain)
} as evening

Each clip stays off the outer stack until a reference places it there. The earlier pictures grouping worked when the whole sequence moved together. Individual scene clips are useful when an operation needs two scenes separately.

2. Assemble the scenes

Append:

$morning
$meadow
$evening
concat

This is the familiar stack sequence: three references leave three Videos, and concat returns one.

3. Validate the assembly

Validate before adding the transition:

clipasm validate learning.clipasm

The result remains 108 frames.

4. Add the transition

Insert flash_cut(200ms) immediately after $meadow:

$morning
$meadow
flash_cut(200ms)
$evening
concat

flash_cut needs a before Video and an after Video. With those inputs omitted, it consumes the two nearest Videos: morning first, then meadow.

$morning  -> [morning]
$meadow   -> [morning, meadow]
flash_cut -> [morning-to-meadow]
$evening  -> [morning-to-meadow, evening]
concat    -> [finished video]

The code references evening only after flash_cut, so evening is not a transition input. One ordinary cut follows the flash transition.

5. Validate the transition

clipasm validate learning.clipasm

Validation still reports 108 frames because flash_cut places its inputs sequentially.

6. Render the result

clipasm render learning.clipasm

7. Check the transition

Open generated/learning.mp4. Confirm that one white flash appears between morning and meadow. Evening follows the transition.

You used named clips to address scenes independently. A fixed-input program then consumed the correct stack values in order.

Next, change a named scene after assembly.