X264Level type See the X264 Docs for a description of this value Signature: export declare type X264Level = 1 | 1.1 | 1.2 | 1.3 | 2 | 2.1 | 2.2 | 3 | 3.1 | 3.2 | 4 | 4.1 | 4.2 | 5 | 5.1; SubscriptionError X264NalHrd