Work with audio

Audio can support an animated explanation when it is referenced by the document and used with a timeline. Keep the visual understandable without audio, then use sound to reinforce—not replace—the sequence.

Timeline waveforms

When the browser can fetch and decode an authored audio source, the timeline shows a waveform to help with timing. It may show loading, retry, or unavailable states while the source is being read.

Some cross-origin audio can play normally but cannot be decoded by the browser for waveform analysis. In that case YADL does not invent a waveform; use the playback result and your source timing instead.

Good practice

• Use audio you have permission to use and keep the source stable for the life of the document.
• Check a timeline-bearing document from the beginning before exporting.
• Do not rely on waveform visibility as proof that an export will include or synchronize a source; resolve visible readiness issues before submitting a video export.

See Timeline for playback and clip controls, and Help if a source cannot be analyzed.