export interface FormatMediaTimeOptions {
    /** Spoken form for aria-valuetext ("1 minute 32 seconds"). */
    spoken?: boolean | undefined;
    /** 'auto' (default) shows hours only when ≥1 h; 'always' always shows. */
    hours?: 'auto' | 'always' | undefined;
}
export declare function formatMediaTime(seconds: number, options?: FormatMediaTimeOptions): string;
/** ISO-8601 duration for <time datetime> (PT1M32S). */
export declare function formatMediaTimeIso(seconds: number): string;
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