Symbol

AudioMimeType

Codec capability + asset-source picking. Recommended encoding pipeline: - Primary: WebM/Opus — smallest, best quality/byte, supported in Chrome, Firefox, Edge, and Safari 14.1+ on macOS / iOS 17+. - Fallback: AAC in M4A — required for older iOS Safari (≤16) and older macOS Safari without Opus support. Ship both; pickSource() returns the first URL the browser can decode. canPlay() uses HTMLAudioElement.canPlayType — it gives a sound (no pun intended) prediction without actually fetching anything. The Web Audio decoder will accept anything HTMLAudioElement says it can play, plus a few extras (uncompressed WAV always works), so canPlay is conservative.