20. 📽️ Text-to-Video Trailer

Overview

Generate a short “trailer” video from a text synopsis—perfect for book promos, game teasers, or course intros—by stitching together relevant generated or stock clips, text overlays, and background music.

Primary Use Cases

• Authors & publishers promoting upcoming books
• Game developers teasing new features
• Educators creating course preview videos

Key Features

• Text input: synopsis + desired length (e.g. 30 s, 60 s)
• Scene planning: LLM-generated storyboard with shot descriptions
• Clip generation: AI-driven video (Stable Video Diffusion) or stock clip retrieval
• Assembly: FFmpeg pipeline for concatenation, transitions, and captions
• Music & voiceover: background track selection + TTS narration

Tech Stack

• Frontend: React + TypeScript + Tailwind (synopsis form & preview)
• Backend: FastAPI (Python) + Go service for FFmpeg orchestration
• AI Models/Tools:
  • Storyboard: gpt-3.5-turbo to output structured scene list
  • Video Gen: runwayml/stable-video-diffusion or external API
  • TTS: tts_models/en/ljspeech/vits
  • FFmpeg for video assembly

Architecture

1. Storyboard Service: generate JSON list of scenes with text prompts.
2. Clip Service: for each scene → generate video clip or fetch stock asset.