import { PptxElement } from 'pptx-viewer-core';
import { classifyMediaType, CanvasSize } from 'pptx-viewer-shared';
/** The media kind a chosen file maps to, or `null` for an unsupported type. */
export declare const mediaTypeOfFile: typeof classifyMediaType;
/**
 * Build a centred `media` element from a chosen audio/video `File`. Resolves
 * `null` when the file isn't audio/video or can't be read.
 */
export declare function buildMediaInsertElement(file: File, canvasSize: CanvasSize): Promise<PptxElement | null>;
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