export declare class VideoRecorder {
    private recorder;
    private chunks;
    private startedAt;
    private onRecordingError;
    /** Fires immediately on a mid-recording error, unlike stop()'s onerror which only fires when stop() is later called. */
    onError(callback: () => void): void;
    start(stream: MediaStream): void;
    stop(): Promise<{
        blob: Blob;
        durationSeconds: number;
    }>;
    isRecording(): boolean;
}
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