/**
 * The list including the names of valid filters.
 */
export declare enum FFMPEGFilters {
    Bassboost_low = "Bassboost_low",
    Bassboost = "Bassboost",
    Bassboost_high = "Bassboost_high",
    "8d" = "8d",
    Vaporwave = "Vaporwave",
    Nightcore = "Nightcore",
    Lofi = "Lofi",
    Phaser = "Phaser",
    Tremolo = "Tremolo",
    Vibrato = "Vibrato",
    Reverse = "Reverse",
    Treble = "Treble",
    Normalizer2 = "Normalizer2",
    Normalizer = "Normalizer",
    Surrounding = "Surrounding",
    Pulsator = "Pulsator",
    Subboost = "Subboost",
    Karaoke = "Karaoke",
    Flanger = "Flanger",
    Gate = "Gate",
    Haas = "Haas",
    Mcompand = "Mcompand",
    Mono = "Mono",
    Mstlr = "Mstlr",
    Mstrr = "Mstrr",
    Compressor = "Compressor",
    Expander = "Expander",
    Softlimiter = "Softlimiter",
    Chorus = "Chorus",
    Chorus2d = "Chorus2d",
    Chorus3d = "Chorus3d",
    Fadein = "Fadein",
    Dim = "Dim",
    Earrape = "Earrape",
    Silenceremove = "Silenceremove"
}
/**
 * Capture pattern for song placeholders.
 */
export declare const PLACEHOLDER_PATTERN: RegExp;