Podcasting 2.0 and modern players (YouTube, Apple Podcasts, Pocket Casts, Overcast) use strict time boundaries starting at 00:00. This tool ensures timestamps are sorted, calculated, and formatted to prevent player parsing errors.
YouTube requires at least 3 chapters of 10+ seconds each, starting with 00:00 or 0:00. Apple and Spotify read embedded ID3 tags or description timestamps to render scrubbable segment cards.
All transcript parsing, synthesized scrubbing tones, waveform simulations, and timestamp calculations happen in your local browser runtime. No transcripts or episode audio ever leave your device.