Turn on Markdown paste before you paste anything
Google Docs only interprets Markdown when the setting is on. In Tools, Preferences there is an Enable Markdown checkbox, and it is off by default in many accounts. With it enabled, a pasted transcript arrives as a properly styled document: the title line becomes Heading 1, section lines become Heading 2, bold stays bold, bullets become bullets. With it off you get a wall of text peppered with ##, and you end up restyling by hand. Test with one paragraph before you paste a batch.
Once the headings are real headings, Insert, Table of contents works. On a 40 second clip that is overkill, but on a doc holding twelve transcripts for a campaign review it is the difference between scrolling and navigating.
The review workflows this unlocks
Three that come up constantly. Client approval: paste the transcript of the draft cut, share with comment access, and the client marks the exact sentence they want softened instead of writing "the middle bit feels off". Compliance: a claims reviewer can highlight and flag specific wording, which is impossible against a video. Creator briefs: paste three competitor transcripts into one doc, annotate what works in each, and hand the doc to the person writing the next script.
Use Suggesting mode for the edit pass. Transcription mishears brand names, acronyms and surnames more often than ordinary words, so the first edit pass is usually fixing proper nouns, and tracked suggestions keep the original visible while you do it.
Getting the text across
Copy from TikTok Transcript and paste, or download the .md and use File, Import in Drive. Both are manual: there is no Google Docs integration, no Drive connector and no API on our side, so nothing lands in your Drive by itself. For longer source material in the same review doc, Video to Markdown handles uploaded files and YouTube to Markdown handles hosted long-form, both producing the same Markdown shape. Context on why the captions cannot simply be copied: how to transcribe a TikTok video.