Podcast Chapters Generator

Chapters make episodes easier to listen to — listeners see an outline, jump to the segment they came for, and stick around instead of bailing when an episode opens slowly. Apple Podcasts, Spotify, Pocket Casts, and YouTube all support them. The catch is producing them: scrubbing back through a 60-minute episode you just finished editing, hunting for the exact second each topic changes, and writing a title for every segment. Done honestly, that's an hour of work per episode — so most shows skip chapters entirely.

Castmagic generates the chapter list from the audio. Paste an episode link or upload your file; the episode is transcribed with word-level timestamps, the AI detects where the conversation shifts topic, and you get a chapter list — timestamp plus title for each segment — ready to paste into your podcast host or YouTube description. Review the titles, nudge any boundary you disagree with, publish.

Why podcast chapters are worth the effort

Chapters turn a one-hour audio blob into a navigable episode. Listeners scanning a chapter list can see exactly what's covered and jump to the part they care about — which keeps the people who'd otherwise abandon at minute four. They also help returning listeners pick up where a topic left off, and they make long interview episodes shareable: 'the story at 42:10' is a link, not an instruction.

Player support is broad: Apple Podcasts and Pocket Casts display chapters as a tappable episode outline, Spotify supports them for shows that provide them, and YouTube turns a timestamp list in the description into clickable chapters on the progress bar. One chapter list serves every platform you publish on.

How Castmagic finds your chapter points

Chapter detection works from the transcript, not from silence detection or arbitrary time intervals. The AI reads the full conversation and marks the places the subject genuinely changes — the host moving to a new question, a guest starting a different story, the show shifting from intro to interview to listener questions. Each detected segment gets a timestamp and a short title describing what's discussed.

Because the underlying transcript has word-level timestamps, chapter boundaries land on the actual moment a topic starts, not the nearest round minute. And because every chapter traces back to transcript text, you can verify any title against what was really said before you publish.

One chapter list, every platform

The output is the standard timestamp format — 0:00, 4:23, and so on, each followed by a title. Paste it into your podcast host's episode description or chapter field, or into a YouTube description for video episodes, where YouTube renders the list as clickable chapters automatically. Plain text means no lock-in: the same list works wherever your show is distributed.

Link or upload — chapters before or after publishing

Adding chapters to your back catalogue? Paste the public episode URL from YouTube, Apple Podcasts, Spotify, or wherever the episode lives. Working on next week's episode? Upload the audio or video file directly and generate chapters before launch. Both routes produce the same transcript-grounded chapter list — and the same transcript can also generate show notes, an episode summary, pull-quotes, and social posts, so the chapters are one output among many rather than a separate job.