import { PlaylistPage, VideoElement } from '@signage-editor/core';
export type MediaPerformanceProfile = 'safe' | 'single-video-ab';
export declare function mediaPerformance(profile: unknown): {
    profile: "single-video-ab";
    imagePredecodeBytes: number;
    videoAb: boolean;
    warmLeadMs: number;
} | {
    profile: "safe";
    imagePredecodeBytes: number;
    videoAb: boolean;
    warmLeadMs: number;
};
/** Pilot only: one local progressive video, ordinary page cuts, at most a 1080p region. */
export declare function singleVideoCandidate(page?: PlaylistPage | null): VideoElement | null;