export declare const DEFAULT_VP9_CPU_USED = 4;
export declare const MIN_VP9_CPU_USED = -8;
export declare const MAX_VP9_CPU_USED = 8;
export declare function normalizeVp9CpuUsed(value: number | undefined): number;
export declare function appendVp9CpuUsedArg(args: string[], value: number | undefined): void;
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