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Mario
Mario

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I Built an AI-Powered Promo Video Generator with Python + FFmpeg (No GPU Required)

#video #python #ffmpeg #automation

I wanted to see if I could build a fully automated promotional video generator using only free, open-source tools. No GPU, no cloud rendering credits, no paid APIs. Just Python, FFmpeg, and some creativity.

What I Built

A pipeline that takes a product description and outputs a 15-second promotional video clip:

  1. Pillow renders 1080x1920 frames with gradient backgrounds, typography, and pricing
  2. gTTS (Google Text-to-Speech) generates Spanish/English narration
  3. FFmpeg composites the image + audio into an MP4 video
  4. Telegram Bot API delivers the final output for review

The Stack

  • Python 3 + Pillow for image generation
  • gTTS for free text-to-speech
  • FFmpeg for video encoding (libx264, ~2MB per 15s clip)
  • Cron for scheduling
  • Telegram Bot API for delivery

Results

  • Each 15-second promo video takes ~5 seconds to render
  • File size: ~1.7-2 MB per clip
  • Total cost: $0 (all tools are free)
  • No GPU required (CPU-only pipeline)

Free Tools Used

  • Pillow (Python image library)
  • gTTS (Google Text-to-Speech)
  • FFmpeg (video encoding)
  • Blockscout (free blockchain explorer)
  • Telegram Bot API (notifications)

I run KeyTrix — a shop for premium developer tools and AI automation resources.

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