export declare enum THUMBNAIL_FORMAT {
    thumbnailFormatJpeg = "thumbnailFormatJpeg",
    thumbnailFormatPng = "thumbnailFormatPng",
    thumbnailFormatWebp = "thumbnailFormatWebp",
    thumbnailFormatGif = "thumbnailFormatGif",
    thumbnailFormatTgs = "thumbnailFormatTgs",
    thumbnailFormatMpeg4 = "thumbnailFormatMpeg4"
}