AI Short Video Generation: A Complete Workflow from Script to Final Product

Workflow Overview

Ideation → Script Generation → Visual Design → Video Compositing → Post-Optimization
    ↓           ↓           ↓           ↓           ↓
 AI-assisted  LLM-generated  Image generation   Video models    AI editing

Tool Selection

Script Generation

• ChatGPT/Claude: Ideation and script writing
• Jasper: Professional marketing copy generation

Visual Design

• Midjourney: High-quality image generation
• DALL-E 3: Image generation integrated with ChatGPT
• Stable Diffusion: Local deployment, fully controllable

Video Compositing

• Runway Gen-3: High-quality video generation
• Pika Labs: Easy-to-use video generation
• HeyGen: Digital human videos

Post-Optimization

• Descript: AI-driven video editing
• CapCut: Free and feature-rich

Practical Case: Product Promo Video

Step 1: Script Generation

Use ChatGPT to generate:

• 30-second video script
• Shot descriptions
• Voiceover copy

Step 2: Visual Generation

Use Midjourney to generate keyframes:

• Product close-ups
• Usage scenarios
• Emotional scenes

Step 3: Video Compositing

Use Runway to convert images into video:

• Add transition effects
• Adjust motion trajectories
• Control pacing

Step 4: Post-Optimization

Use Descript to:

• Add voiceover narration
• Adjust subtitles
• Optimize audio

Cost Estimation

Stage	Tool	Monthly Cost
Script	ChatGPT Plus	$20
Visuals	Midjourney	$30
Video	Runway	$35
Post-production	Descript	$24
Total		$109

Efficiency Improvement Suggestions

1. Template-based: Establish common video templates
2. Batch generation: Generate multiple versions at once
3. A/B testing: Test different style effects
4. Data-driven: Iterate and optimize based on data

Conclusion

AI video generation is lowering the barrier to professional video production. Mastering the right workflow allows individuals or small teams to produce high-quality video content.

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This tutorial is based on the latest tool versions as of 2025.