Package com.google.android.exoplayer2.util

## Interface Effect

- All Known Subinterfaces:
    `ColorLut`, `GlEffect`, `GlMatrixTransformation`, `MatrixTransformation`, `RgbMatrix`
  All Known Implementing Classes:
    `Contrast`, `Crop`, `HslAdjustment`, `Presentation`, `RgbAdjustment`, `RgbFilter`, `ScaleToFitTransformation`, `SingleColorLut`

      public interface Effect

  Marker interface for a video frame effect.