export type VideoProbe = {
    /** `false` when the browser could not read the media at all (decode error / timeout before metadata) — every other field is then meaningless. */
    readable: boolean;
    /** `0` for a readable file with no video track (e.g. an audio-only container). */
    width: number;
    height: number;
    /** Exact, unrounded seconds, or `null` when the container reports no usable duration (`Infinity` for MediaRecorder WebM, `NaN` for broken metadata). */
    durationSec: number | null;
    /** First readable frame as a JPEG blob. `null` when `cover` was not requested, or the browser could not decode / export one. */
    cover: Blob | null;
};
export type VideoProbeOptions = {
    /** Grab the first frame as a JPEG. Off means metadata-only — no full buffering, no decode, no canvas encode. @default true */
    cover?: boolean;
    /** @default 10000 */
    timeoutMs?: number;
};
/**
 * Read dimensions, duration and (optionally) a first-frame cover out of a local media URL — an
 * object URL from `UploadingFile.previewUrl` or `URL.createObjectURL`. Always resolves: media the
 * browser cannot decode comes back as `readable: false` with zeroed metrics, and a readable file
 * whose cover cannot be exported comes back `readable: true` with `cover: null`.
 *
 * The single media-probing primitive in the kit — every `FileRules` audio / video rule reads through
 * it with `cover: false`. Audio-only containers are read by the same `<video>` element (same media
 * pipeline, same codec support) and come back `readable` with `width` / `height` of `0`.
 */
export declare const probeVideo: (url: string, options?: VideoProbeOptions) => Promise<VideoProbe>;