AgentSkillsCN

demo-video

通过自动化浏览器交互与帧捕获,轻松制作产品演示视频。当用户希望录制Web应用的演示、操作指南、产品展示,或制作交互式视频时,此工具将为您提供理想之选。支持Playwright CDP屏幕录制,以高清画质捕捉画面;同时利用FFmpeg进行视频编码,确保输出效果优质流畅。

SKILL.md
--- frontmatter
name: demo-video
description: Create product demo videos by automating browser interactions and capturing frames. Use when the user wants to record a demo, walkthrough, product showcase, or interactive video of a web application. Supports Playwright CDP screencast for high-quality capture and FFmpeg for video encoding.

Demo Video Creator

Create polished product demo videos by automating browser interactions.

Overview

  1. Plan the demo sequence (pages, interactions, timing)
  2. Record frames using Playwright CDP screencast
  3. Encode to video with FFmpeg

Quick Start

Prerequisites

  • Clawdbot browser running (browser action=start profile=clawd)
  • App accessible via browser (localhost or remote)
  • FFmpeg installed for encoding

Recording Workflow

  1. Start the Clawdbot browser if not running
  2. Navigate to the app manually or via browser action=open
  3. Customize scripts/record-demo.js for the target app
  4. Run: node scripts/record-demo.js
  5. Encode: bash scripts/frames-to-video.sh

Planning a Demo

See references/demo-planning.md for guidance on:

  • Structuring demo sequences
  • Timing and pacing
  • Interaction patterns
  • What makes demos compelling

Scripts

scripts/record-demo.js

Template Playwright script that:

  • Connects to Clawdbot browser via CDP
  • Starts screencast capture (JPEG frames)
  • Executes demo sequence (navigation, clicks, hovers, typing)
  • Saves frames to output directory

Customize for each demo:

  • DEMO_SEQUENCES array - define pages and interactions
  • OUTPUT_DIR - where to save frames
  • FRAME_SKIP - skip every Nth frame (lower = more frames)

scripts/frames-to-video.sh

FFmpeg encoding script with presets:

  • mp4 - H.264, good quality/size balance (default)
  • gif - Animated GIF for embedding
  • webm - VP9, smaller files

Usage: ./frames-to-video.sh [input_dir] [output_name] [format]

Interaction Patterns

javascript
// Navigation
await page.goto('http://localhost/dashboard');
await page.waitForTimeout(2000);

// Click element
await page.locator('button:has-text("Create")').click();
await page.waitForTimeout(500);

// Hover (show tooltips, hover states)
await page.locator('.card').first().hover();
await page.waitForTimeout(1000);

// Type text
await page.locator('input[placeholder="Search"]').fill('query');
await page.waitForTimeout(500);

// Press key
await page.keyboard.press('Enter');
await page.keyboard.press('Escape');

// Scroll
await page.evaluate(() => window.scrollBy(0, 300));

Tips

  • Timing: 2s on page load, 0.5-1s between interactions, 1.5s to show results
  • Frame skip: Use 3-5 for smooth video, 8-10 for smaller files
  • Quality: 85-90 JPEG quality balances size and clarity
  • Resolution: Browser window size determines output resolution
  • Loops: GIFs should loop seamlessly - end where you started