40-second launch trailers with PIL, ffmpeg and one neural voice — no editor, no cloud

I build 40–60 second launch trailers for small AI products, and the entire pipeline is Pillow, ffmpeg and one neural voice . No timeline editor, no cloud video service, no stock template. This post is the actual recipe — every command is real and runs on a laptop.

Source: [Dev.to](https://dev.to/loveoftheai/40-second-launch-trailers-with-pil-ffmpeg-and-one-neural-voice-no-editor-no-cloud-2o91)