Why one clip is not one post
A 45 second TikTok transcribes to roughly 110 words, and a 60 second one to about 150. Publishing that as a standalone article gives you a page with nothing to rank for, competing against pages five times its depth. It also trains you into a bad habit, because the temptation is to pad it back up with filler that adds no information.
The pattern that works is six to eight clips on one theme, converted and merged. Six 45 second clips give you around 700 spoken words of raw material, which after editing and the addition of framing, context and a conclusion becomes a 1,200 to 1,500 word post with a genuine point of view. It costs 12 to 16 credits to produce at 2 credits per minute, and the free plan's 50 monthly credits cover three or four posts.
Structuring the merged post
Give each clip its own Heading 2 phrased as the question it answers rather than as its hook, since headings are read by search engines and by skimmers, and a hook optimised for a three second scroll makes a poor section title. Keep the transcript body underneath, edited for reading. Embed the original TikTok inside its section so readers can watch the version that made the point better, and so the page carries something the text alone does not.
The same merge works across formats. A long interview from YouTube to Markdown becomes the spine of the post and the short clips become the supporting sections, all in one Markdown document.
Duplicate content, and why this is not it
A transcript of your own video, published on your own domain, is not duplicate content. The video lives on TikTok as video; there is no competing text version indexed anywhere, because TikTok never exposes one. That is the whole asymmetry this exploits, and it is spelled out in TikTok will not give you the transcript. Convert at TikTok Transcript, and see transcribing TikToks for repurposing for the wider loop.