YouTube 文字起こしを Obsidian 用 Markdown にする

A raw transcript is rarely something you want to keep as-is. It is noisy, repetitive, and hard to scan. What most Obsidian users actually want is a note that preserves the useful ideas without preserving every spoken filler word.

Why transcript-to-Markdown matters

The transcript is the closest thing to the source, but it is not the final artifact. Your final artifact is usually one of these:

• a note you can search later
• a set of takeaways tied to a project or topic
• a study note you can revisit before an exam or meeting

The best workflow is transcript first, note second

Start with the transcript, not the video. Then ask the note system to do a cleaner job than the transcript itself. In practice that means:

1. paste the transcript into 5tldr
2. generate a concise summary or study-oriented output
3. copy the resulting Markdown into Obsidian or your docs tool

What good Markdown notes should contain

Instead of saving a wall of transcript text, keep a smaller structure:

• a one-paragraph takeaway
• the main concepts or arguments
• action items or review prompts
• links back to the source video when you need context

Where 5tldr fits

The YouTube flow is fastest when captions are available. The transcript fallback is better when you already have the text and just want to turn it into cleaner notes. If you need a more structured learning format, jump into Learning Loop.

Step-by-step: transcript to Obsidian note

Here is a concrete workflow you can run in under five minutes for any lecture, interview, or podcast you want to keep:

1. Open the YouTube video and click the three-dot menu below the player, then select "Show transcript."
2. Select all the transcript text and copy it to your clipboard.
3. Go to 5tldr and paste the text into the input box. Choose "Key Points" or "Deep Dive" mode depending on how much detail you want.
4. Click "Copy as Markdown" on the result. The output preserves headings, bullet points, and bold text.
5. Open Obsidian, create a new note, and paste. Add your own tags, links, or YAML front matter as needed.

Formatting tips for Obsidian users

A few small habits make your notes much more searchable later:

• Add a YAML front matter block with source, date, and tags fields so Dataview queries can find it.
• Use [[wikilinks]] to connect the note to related topics in your vault.
• Keep the original YouTube URL in a metadata field so you can jump back to the video if the summary raises a question.
• If the video covers multiple topics, split the Markdown into separate notes under a shared folder or tag.

Obsidian is only one destination

Markdown export is useful because it keeps the note portable. You can move it into Obsidian, Notion, Logseq, docs, or a team wiki without reformatting everything from scratch. The same copy-paste workflow applies to any tool that accepts Markdown input, which is most modern knowledge-management apps.

The takeaway

Treat the transcript as raw material, not as the final artifact. The real asset is the cleaned Markdown note you keep afterward. A five-minute investment in cleaning and structuring the output pays off every time you search your vault three months later and find exactly the insight you needed. That is what makes transcript-based workflows worth repeating.