# Kunkun Custom UI Extension Template (SvelteKit) ```ts export type ProcessVideoOptions = { resizePercentage?: number; size?: string; aspectRatio?: string; videoCodec?: string; audioCodec?: string; format?: string; outputOptions?: string[]; audioFilters?: string[]; noAudio?: boolean; takeFrames?: number; noVideo?: boolean; autopad?: { pad?: boolean; color?: string; }; audioQuality?: number; fps?: number; preset?: | 'ultrafast' | 'superfast' | 'veryfast' | 'faster' | 'fast' | 'medium' | 'slow' | 'slower' | 'veryslow'; startTime?: string | number; duration?: string | number; audioBitrate?: number; videoBitrate?: number; audioChannels?: number; ffprobePath?: string; ffmpegPath?: string; }; ```