gdal_translate "Y:\SIO\pointclouds\Anza_Borrego_Mud_Hills\Mud Hills Ortho v4_transparent_mosaic_group1.tif" "Y:\SIO\pointclouds\Anza_Borrego_Mud_Hills\mapbase.mbtiles" -of mbtiles -co "TILE_FORMAT=PNG8" -co "ZLEVEL=9"            
                                                                                                                                                                    
gdaladdo -r nearest "Y:\SIO\pointclouds\Anza_Borrego_Mud_Hills\mapbase.mbtiles" 2 4 8 16