mood-and-duration-matching

skill_id	mood_and_duration_matching
name	Mood and Duration Matching
description	Match music mood and section length to the ad duration.

Purpose

Make BGM structure fit the ad duration and emotional arc.

When To Use

Use for the bgm node.

Inputs

Duration, script beats, storyboard timing, desired emotion, channels.

Output Guidance

Provide intro, lift, and ending timing guidance.

Prompt Rules

• Keep timing aligned to script and storyboard.
• Use smooth transitions.
• Keep loop or fade needs clear.

Do Not

• Do not ignore the requested duration.
• Do not create distracting music changes.