YouTube 文字起こし内を検索する方法
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2026-03-11
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A summary tells you what matters. Transcript search tells you where it was said. Those are two different jobs, and useful video tools need both.
Why transcript search matters
If you are reviewing a lecture, interview, or webinar, you often know the keyword you want but not the timestamp. Manually scrubbing is slow. Transcript search fixes that by turning a long video into something you can query.
What transcript search should do
- find the exact phrase or related wording
- show the matched line in context
- let you jump to that moment immediately
Where 5tldr fits
5tldr now exposes transcript search inside the video result view. After the summary finishes, open the source tab, search for a keyword, and click a result to jump back into the video.
Best use cases
- finding a definition in a recorded lecture
- locating a quote from a podcast guest
- jumping back to the segment where a method or framework was explained
Step-by-step: search a transcript with 5tldr
- Paste the YouTube URL into 5tldr and generate a summary.
- Once the summary loads, click the Source or Transcript tab.
- Use the search bar to type any keyword, phrase, or name.
- Matched lines are highlighted with their timestamp.
- Click a timestamp to jump directly to that moment in the video.
What to search for
The most useful transcript searches are for specific things you remember hearing but cannot locate:
- Technical terms: Search for "gradient descent" in a machine learning lecture to find where it was first introduced.
- Names and references: Search for a researcher, book title, or framework name mentioned by the speaker.
- Numbers and data: Search for "percent" or "million" to find the key statistics cited in the talk.
- Action items: Search for "recommend" or "should" to find the speaker's specific advice.
Alternatives for transcript search
YouTube itself offers a transcript panel (click the three dots below a video), but it has no search functionality — you have to scroll through the entire text manually. Browser Ctrl+F/Cmd+F works on the native transcript but loses timestamp clickability. Tools like 5tldr combine both: a searchable transcript with clickable timestamps.
Search is not the same as summarization
A summary compresses a whole source. Search helps you inspect the original material when you need precision. The strongest workflow uses both: summarize first to understand the big picture, then search the transcript when you need a specific passage, quote, or data point.
The takeaway
If the summary answers what happened, transcript search answers where exactly was it said. Together, they turn a passive video into something you can query, cite, and reference — which makes video notes far more usable for studying, writing, or research.