VideoToShorts Blog – Notes From Building a Video Clipper

Notes from building VideoToShorts

How the clipper works under the hood, written up with the numbers we measured — starting with how we cut a clip from a two-hour YouTube video without downloading all of it.

Cutting an 11-second clip from a two-hour YouTube video with 5.9 MB instead of 370

A progressive MP4 carries an index of where every second lives. Fetch the header, read the span out of the index, fetch the span, leave holes in between.

Sep 3, 2026

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