Get answers from the videos you watch
Short, practical guides for summarizing, searching, and asking questions about supported video and audio — including authenticated or transcript-less sources that are often difficult to use directly with general AI tools.
For the videos general AI tools often can't open directly
AI assistants can only read what they can reach. Silestis works on the page you're already on — including gated, on-page, and transcript-less video.
How to summarize a YouTube video without downloading it
Open a supported video, click Silestis, and turn it into a summary plus timestamped answers without manually downloading or copying a transcript.
Can ChatGPT summarize a YouTube video? When you need Silestis instead
General AI tools may use public captions, but they do not reliably access every video or authenticated source. Here are the available workflows and where starting on the page helps.
How to get timestamped answers from a podcast
Stop scrubbing a two-hour episode. Create a summary, show notes, and answers anchored to [mm:ss] timestamps when the selected mode provides them.
How to search inside a long video or lecture
Find the one moment you need in a three-hour recording — by meaning, not just keywords — and jump straight to it.
How to ask questions about supported online video
Turn supported videos and podcasts into searchable material — with answers that cite the source timestamp when available.
How to turn a lecture into study notes
Start with a recording you may process, create a transcript, then check and organize the material you want to study.
How to transcribe a video in Safari
Use the Safari extension included with Silestis for Mac to start from a supported video page you already have open.
How to export SRT or VTT subtitles
Create a transcript with timing, review the segments, then export the subtitle format your video editor or player accepts.
Start from the supported lecture page you already use.
Open the video and click Silestis to start a transcript, summary, and notes workflow on the page. Timestamp-capable modes can also return cited answers, including when no source transcript exists.
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