> ## Documentation Index
> Fetch the complete documentation index at: https://docs.trailercast.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Editing trailers

> Rebuild with different clips or compose a fully custom trailer.

Two ways to change what's in a trailer after it's been generated. Pick based on how much you're changing.

## Rebuild with different clips

Best when the AI's selection is *mostly* right but you want to swap one or two moments.

<Steps>
  <Step title="Click Rebuild with different clips">
    Action button under the video on the trailer review page.
  </Step>

  <Step title="Toggle moments">
    The modal shows every detected moment as a checkbox, both the ones the AI included and ones it considered but rejected. Toggle them on or off.

    Each moment card explains itself: a **"Why this clip"** line (the AI's rationale for the pick), an **impact score** (0–100, its judgment of how persuasive the moment is to someone who wasn't on the call), and a **DEAL MOMENT** chip on exchanges like a handled objection, pricing math landing, or a buying signal. Hover the duration chip to see why the clip runs the length it does.
  </Step>

  <Step title="Submit">
    The trailer recomposes in 1–3 minutes. You'll see a progress panel where the player was.
  </Step>

  <Step title="Done">
    The new trailer replaces the old one at the same URL, any share link you've already sent updates automatically.
  </Step>
</Steps>

<Tip>
  Rebuild is non-destructive on the video file, you're just swapping which moments get composed. The original transcript, deal brief, and engagement data stay attached.
</Tip>

## Build your own trailer (custom clips)

Best when you want a fully bespoke cut, different intro, different feature emphasis, A/B test variant.

<Steps>
  <Step title="Click Build your own trailer">
    Action button under the video.
  </Step>

  <Step title="Pick exact start/end timestamps">
    The modal lets you scrub the source recording and add up to 12 clips with hand-picked in/out points.

    Limits: each clip runs **5 seconds to 5 minutes**, and the whole trailer caps at **30 minutes** of selected content. The builder tells you which limit you've hit as you add clips — and if an AI-suggested moment runs past the per-clip cap, it's trimmed to fit with a notice.
  </Step>

  <Step title="Optional: add a custom narration prompt">
    "Open with the energy problem, then walk through the integration features, close on pricing.", guides the AI in stitching narration between clips.
  </Step>

  <Step title="Submit">
    The AI composes them into a trailer with narration that ties them together. \~2-4 minutes.
  </Step>

  <Step title="Lands as a NEW demo">
    The custom trailer doesn't replace the original, it's a new demo row, so you can A/B test different cuts side-by-side.
  </Step>
</Steps>

## When to use which

| Situation                                                             | Use                                                      |
| --------------------------------------------------------------------- | -------------------------------------------------------- |
| AI picked the wrong feature on slide 4                                | Rebuild                                                  |
| Want to swap two moments and add a third                              | Rebuild                                                  |
| Original trailer is "discovery-heavy", want a "feature-heavy" version | Build your own                                           |
| Doing an A/B test on cuts                                             | Build your own (creates new demo, original stays intact) |
| Prospect's CIO asked for a 30-second exec summary                     | Build your own (cap at 4-5 short clips)                  |

## Editing narration text directly

Not yet supported. Today the path to changing narration is:

1. Edit the moment's feature/benefit text in your AI Personalization context, OR
2. Use Build your own trailer with a custom narration prompt

Direct narration text editing is on the roadmap.

## Re-running the AI summary / deal brief

Re-running the AI after a rebuild is automatic, the new trailer's deal brief regenerates with the new moment set. No separate action needed.

## Reverting a rebuild

There's no explicit revert today. If you rebuilt and don't like the result, you can:

1. Rebuild again with the original moment selection
2. Or contact support, we can restore from the previous trailer file if you reach out within a few days