How do I chat with a YouTube video?

Open the video on YouTube with the Marqly extension installed and switch to the Chat tab on the Marqly card on the watch page. Ask a question in plain language — “what does he say about cold outreach?” — and the answer is generated from the video’s transcript, so it reflects what’s actually said in the video, not a generic guess. Chat with videos is a Marqly Pro feature.

Answers grounded in the transcript

The Chat tab doesn’t answer from general knowledge; it answers from the transcript of the video in front of you. That’s the difference between “AI thinks podcasts usually say X” and “this speaker said X in this episode.” And because the Transcript tab sits right next to Chat, you can verify any answer against the source in seconds — which is the habit worth building: treat an answer as a pointer to the passage, not a replacement for it.

When chat beats scrubbing

• Long interviews and podcasts — ask whether a topic comes up at all before committing two hours to find out.
• Tutorials — ask for the one step you’re stuck on instead of rewatching from the start.
• Talks and lectures — pin down the claim you half-remember, with the wording the speaker actually used.

The AI Summary tab tells you what the video covers; Chat is for the follow-up questions the summary raises. Both workflows are laid out on the YouTube summarizer page.

Chat with one video, Ask across your whole library

Chat is scoped to the video in front of you. When the question is bigger — everything you’ve saved on a topic — that’s what Ask is for: Marqly’s Pro assistant over your entire library. Ask is a multi-turn chat whose answers carry numbered citations back to your own saves, and it opens with ⌘J (Ctrl+J on Windows). Chat with the one video; Ask with the archive.

What you need, honestly

Chat requires Marqly Pro: $72/year (about $6/month billed annually) or $9/month — see pricing and what’s in Marqly free vs Pro. On the free plan you can still save videos — the free plan holds up to 100 saves and your whole library is keyword-searchable — but the transcript-powered AI tabs sit on the Pro side of that line. If all you need is the raw text of one video, the standalone YouTube transcript tool covers that case without a subscription.

For a longer walkthrough with example conversations, read chat with YouTube videos.