Opening sound

The first 200–500 ms of audio in a short-form video.

Opening sound is the audio equivalent of the first thumbnail frame. It triggers a scroll-stop decision before any visual content registers.

Trending sounds give an initial reach boost, but original sound design tends to perform better long-term.

Silence at the open is a documented retention killer on Shorts and TikTok.

Why it matters

Opening sound is consistently the most underrated lever in short-form. Channels that invest in sound design see 10–25 percent retention lift.

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Paste any YouTube, Shorts or TikTok link and our analyzer will surface the metric, the curve, and the move that lifts it next.

Percent of feed impressions that stop scrolling long enough to register the video.

The opening 0–3 second window where short-form viewers decide to stay or swipe.

Percent of impressions that keep watching past the first 3 seconds.

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