Terminal Demo Video & Presentation Builder
Generates narrated CLI and TUI terminal demo videos and interactive Slidev presentation decks using VHS, FFmpeg, and asciinema.
The demo-video skill automates the production of high-quality terminal demonstrations, screencasts, and slide presentations for command-line interfaces and terminal user interfaces. It employs a beat-based manifest system where each terminal action is matched with narration, using VHS to render silent video clips and FFmpeg to freeze the final frame to match voiceover timing. It also includes an interactive teleprompter for user voiceovers, generates closed captions (.srt/.vtt) and documentation GIFs, and supports live presentation decks in Slidev using asciinema casts that automatically pause on beat markers for live screen-sharing.