VideoLens — YouTube Video Summaries

Turn YouTube videos and local files into polished, timestamped written reports with AI. Uses your own OpenAI API key.

VideoLens analyzes the video you're already watching and returns a structured, timestamped report — right in Chrome's side panel. Open a YouTube video or another page with an HTML5 video player, choose a report style, and ask what you want to learn. VideoLens samples frames, reads available captions, and creates an evidence-grounded analysis where every finding cites the exact moment in the video. Local video files work too (mp4 / webm / mov), including audio transcription for files up to 20 minutes. REPORT STYLES AND SPECIALIZED MODES • Detailed report — important ideas, context, examples, caveats, and conclusions • Key insights — signal without repetition or filler • Tutorial guide — ordered steps, commands, warnings, and verification • Interview / podcast — themes, claims, quotes, and follow-up questions • Bug report — repro steps, failure modes, severity • Meeting — decisions, commitments, follow-up actions • UX review — user friction in session replays and screen recordings • Product demo — feature inventory and positioning analysis • Content review — hook, pacing, claims, call-to-action critique • Privacy scan — find secrets, credentials, and PII before you share BRING YOUR OWN KEY — PRIVATE BY DESIGN The entire pipeline runs inside your browser. The selected video's frames, audio or captions, page title, and your prompt are sent to exactly one place: OpenAI's API, using your own API key. No VideoLens servers receive your analysis data. No VideoLens account, no extension telemetry, no extension analytics. Your key is stored only on your device. A typical video costs $0.05–$1.50 in OpenAI usage, billed straight to your own OpenAI account — estimates are shown before every run. OPEN SOURCE Free under the MIT license — unlimited analyses, no account, no product tier. ALSO IN THE BOX • Follow-up Q&A: ask more questions against the analyzed timeline for cents • Download a self-contained, professionally designed HTML report • Open the print-ready report and save a polished PDF using Chrome's print dialog • Export Markdown or JSON, or copy the report as text • Open source (MIT): github.com/shadoprizm/videolens LIMITS WORTH KNOWING DRM-protected players (Netflix, Disney+, etc.) cannot be captured — this is a browser security guarantee, not a bug. Live streams are not supported. Audio transcription of in-page videos uses available captions (YouTube); local files up to 20 minutes are transcribed directly. On other sites, cross-origin video security can prevent frame capture.