Six videos on the topic. One answers your question. Find out which, and where.
Worthwatch judges each video from its transcript. It points to the minute where the substance starts and lists what it covers, with the time for each point.
The search results all look the same.
Six explainers with the same title. A lecture that runs ninety minutes. A short that promises the whole thing in sixty seconds. You pick one and find out the hard way that it covers the chapter you already know.
A transcript tells you before you press play. Worthwatch reads it for you and tells you whether, and where.
How it fits an evening of studying.
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Open the panel on each result
The verdict says watch, skim, or skip against what the title promised. Skip the ones that do not deliver before you spend a minute on them.
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Jump to the point you need
The points list carries a timestamp for each. Click the one that matches your question and the player goes there.
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Ask the video
On Pro, ask "does it cover the proof of the second theorem?" and get the answer from the transcript, with the timestamp.
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Save the ones that earned it
Pro saves a verdict to your library with the timestamps, and exports it as Markdown or Notion-ready text for your notes.
Long lectures, found in parts.
A 2-hour lecture gets the same verdict, with the points spread across the two hours and the time for each. The parts you need are usually three, and now you know which.
The skip ranges mark the housekeeping at the start, the repeated points, and the closing announcements.
Where it falls short.
A video whose value is in what is on the board rather than what is said can be misjudged. Worked problems on a whiteboard are the common case.
Auto-generated captions misspell names, symbols, and numbers. The panel says when the captions were auto-generated, and the points paraphrase rather than quote.
A verdict is a judgment from the transcript. Use it to decide where to start, and check the source.
Free for most evenings.
5 verdicts a day are free, and any video another student has already asked about is free and does not count. Pro adds unlimited verdicts, Ask the video, the library, and the digest for up to 30 channels. It costs $4 a month or $36 a year.
Follow the channels that teach your subject.
Add the channels that cover your courses. Each morning the digest lists their new videos with a verdict, so you watch the ones that fit the week's topic.