About ProofLink

Videos are long. Trust is shorter.

Most video summaries give you a list of bullet points. Some of those points are accurate. Some are not. There is no way to tell which is which without watching the video again — and if you have to watch the video again, the summary has not done its job.

ProofLink starts from a different position: every claim in a summary should be traceable. Not just in theory — in the interface. Each key point carries a timestamp and a link to the transcript segment it was grounded in. You decide whether to trust it. The tool makes that decision possible.

What ProofLink does

ProofLink is a video knowledge workspace. Paste a public YouTube URL, a podcast link, or upload an audio or video file, and the workspace returns a timestamped transcript. From that transcript, it generates an overview, key points, and chapters — all of which link back to the exact moments in the original recording.

The result lives in one place: a transcript you can search, a summary you can verify, and notes you can export. You do not need to open a separate app or re-upload your file.

How it works

1. Paste a URL or upload a file. Supported sources include public YouTube videos, podcast feeds, and audio or video file uploads up to 25 MB.
2. Receive a timestamped transcript. Speech is transcribed and organized into segments with start times. Each segment stays linked to its moment in the recording.
3. Read, search, and review. The full transcript is searchable. Key points are generated from the transcript and each one links back to its source segment.
4. Export or continue. Copy the transcript, export it as Markdown, or continue from the same workspace with Ask Video. No account is required.

Why we keep the source attached

A summary that does not show its work is a black box. You read the bullet points, take them on trust, and move on. If any point is wrong — a misheard name, a misquoted number, a claim that the speaker was being ironic about — you have no way to know.

Keeping the transcript and timestamps in the same view as the summary changes the information relationship. Instead of accepting or rejecting each point in the abstract, you read the surrounding context and make an informed judgment. That is the difference between a summary you use and a summary you trust.

This approach also matters for research and work use cases: a quoted passage with a timestamp is a quotable passage with a citation. You can send it to a colleague and they can verify it without your help.

Who it is for

ProofLink is built for anyone who watches or listens to informational video and wants to get more out of it:

• Students who want to extract notes from lectures without rewatching the full recording.
• Researchers who need quotable passages with timestamps for papers, briefs, or further analysis.
• Professionals who review meetings, interviews, webinars, or tutorials and want to turn spoken content into searchable notes.
• Learners who watch long-form educational content and want a way to verify their understanding before moving on.

Try it on a real video

The best way to understand what ProofLink does is to use it. We have published a complete public study pack for the Harvard CS50 2026 full course, organized into timestamped sections covering Scratch, C, algorithms, memory, Python, SQL, AI, web development, and Flask.

You can also start from the homepage with any public YouTube video, podcast URL, or uploaded file — no account needed.

Get in touch

For questions, feedback, or partnership inquiries, reach out by email at hello@aivideosummarizer.ai. Find the project on GitHub and follow updates on X.