AI Video Summarizer Extension

The AI Video Summarizer Extension converts long video content into concise, readable summaries. It accepts a video URL or uploaded file and an optional transcript. Core functions include extractive and optional abstractive summarization, timestamped highlights, and keyword extraction. Users choose depth (short, medium, long) or a target sentence count, and can export results as TXT, MD, or JSON. The tool aligns selected sentences to their transcript timestamps to preserve context. It supports multiple languages via language detection and can process batches through an API. Data processing is designed to be ephemeral, with configurable retention.

In practice, developers or analysts provide a video source, a transcript when available, and a desired depth. The backend analyzes sentence structure, ranks sentences by relevance using TextRank/TF-IDF, and assembles a cohesive summary with representative timestamps. Output highlights present quick references to where key points appear in the video. The extension is valuable for educators creating study guides, marketers drafting brief content for social channels, and researchers compiling literature syntheses. Unique value lies in combining structured extraction with timestamped highlights and multi-language support, enabling fast, repeatable summaries across large video libraries. Use cases include conference talks, online courses, product demos, and interviews. Features are designed to minimize manual note-taking while preserving important context and quotes.