I am trying to create a kml version of a map tile using gdal_translate on a geotiff with alpha layer (link here) as follows:

gdal_translate -of KMLSUPEROVERLAY input.tif output.kml

however, the resulting kml file has a black area where the alpha layer should be - see here for a link to all the input and output files (and subdirectories produced by the operation).

Any ideas as to how I could produce a kml file without the black area (also how I could generate only a single standalone .kml file, rather than a .kml linking a bunch of subdirectories as in the zipfile linked) would be greatly appreciated.

Thanks

n.b. gdalinfo on the input geotiff:

Driver: GTiff/GeoTIFF
Files: input.tif
Size is 3822, 3837
Coordinate System is:
PROJCS["WGS 84 / Pseudo-Mercator",
    GEOGCS["WGS 84",
        DATUM["WGS_1984",
            SPHEROID["WGS 84",6378137,298.257223563,
                AUTHORITY["EPSG","7030"]],
            AUTHORITY["EPSG","6326"]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433],
        AUTHORITY["EPSG","4326"]],
    PROJECTION["Mercator_1SP"],
    PARAMETER["central_meridian",0],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    EXTENSION["PROJ4","+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs"],
    AUTHORITY["EPSG","3857"]]
Origin = (-13539823.138956749811769,4690722.589982722885907)
Pixel Size = (0.122995666356360,-0.122995666356360)
Metadata:
  AREA_OR_POINT=Area
  TIFFTAG_DOCUMENTNAME=/mnt/dd/data/1417212380_DDSPIDER/tmp-0-0.tif
  TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
  TIFFTAG_XRESOLUTION=72
  TIFFTAG_YRESOLUTION=72
Image Structure Metadata:
  INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left  (-13539823.139, 4690722.590) (121d37'49.08"W, 38d47' 0.99"N)
Lower Left  (-13539823.139, 4690250.656) (121d37'49.08"W, 38d46'49.09"N)
Upper Right (-13539353.050, 4690722.590) (121d37'33.88"W, 38d47' 0.99"N)
Lower Right (-13539353.050, 4690250.656) (121d37'33.88"W, 38d46'49.09"N)
Center      (-13539588.094, 4690486.623) (121d37'41.48"W, 38d46'55.04"N)
Band 1 Block=3822x1 Type=Byte, ColorInterp=Red
  Mask Flags: PER_DATASET ALPHA 
Band 2 Block=3822x1 Type=Byte, ColorInterp=Green
  Mask Flags: PER_DATASET ALPHA 
Band 3 Block=3822x1 Type=Byte, ColorInterp=Blue
  Mask Flags: PER_DATASET ALPHA 
Band 4 Block=3822x1 Type=Byte, ColorInterp=Alpha

I am trying to create a kml version of a map tile using gdal_translate on a geotiff with alpha layer (link here) as follows:

gdal_translate -of KMLSUPEROVERLAY input.tif output.kml

however, the resulting kml file has a black area where the alpha layer should be - see here for a link to all the input and output files (and subdirectories produced by the operation).

How can I produce a kml file without the black area (also how I could generate only a single standalone .kml file, rather than a .kml linking a bunch of subdirectories as in the zipfile linked)?

gdalinfo on the input geotiff:

Driver: GTiff/GeoTIFF
Files: input.tif
Size is 3822, 3837
Coordinate System is:
PROJCS["WGS 84 / Pseudo-Mercator",
    GEOGCS["WGS 84",
        DATUM["WGS_1984",
            SPHEROID["WGS 84",6378137,298.257223563,
                AUTHORITY["EPSG","7030"]],
            AUTHORITY["EPSG","6326"]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433],
        AUTHORITY["EPSG","4326"]],
    PROJECTION["Mercator_1SP"],
    PARAMETER["central_meridian",0],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    EXTENSION["PROJ4","+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs"],
    AUTHORITY["EPSG","3857"]]
Origin = (-13539823.138956749811769,4690722.589982722885907)
Pixel Size = (0.122995666356360,-0.122995666356360)
Metadata:
  AREA_OR_POINT=Area
  TIFFTAG_DOCUMENTNAME=/mnt/dd/data/1417212380_DDSPIDER/tmp-0-0.tif
  TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
  TIFFTAG_XRESOLUTION=72
  TIFFTAG_YRESOLUTION=72
Image Structure Metadata:
  INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left  (-13539823.139, 4690722.590) (121d37'49.08"W, 38d47' 0.99"N)
Lower Left  (-13539823.139, 4690250.656) (121d37'49.08"W, 38d46'49.09"N)
Upper Right (-13539353.050, 4690722.590) (121d37'33.88"W, 38d47' 0.99"N)
Lower Right (-13539353.050, 4690250.656) (121d37'33.88"W, 38d46'49.09"N)
Center      (-13539588.094, 4690486.623) (121d37'41.48"W, 38d46'55.04"N)
Band 1 Block=3822x1 Type=Byte, ColorInterp=Red
  Mask Flags: PER_DATASET ALPHA 
Band 2 Block=3822x1 Type=Byte, ColorInterp=Green
  Mask Flags: PER_DATASET ALPHA 
Band 3 Block=3822x1 Type=Byte, ColorInterp=Blue
  Mask Flags: PER_DATASET ALPHA 
Band 4 Block=3822x1 Type=Byte, ColorInterp=Alpha

I am trying to create a kml version of a map tile using gdal_translate on a geotiff with alpha layer (link here) as follows:

gdal_translate -of KMLSUPEROVERLAY input.tif output.kml

however, the resulting kml file has a black area where the alpha layer should be - see here.

Any ideas as to how I could produce a kml file with only the area visible in the original geotiff would be greatly appreciated.

Thanks

n.b. gdalinfo on the input geotiff:

Driver: GTiff/GeoTIFF
Files: input.tif
Size is 3822, 3837
Coordinate System is:
PROJCS["WGS 84 / Pseudo-Mercator",
    GEOGCS["WGS 84",
        DATUM["WGS_1984",
            SPHEROID["WGS 84",6378137,298.257223563,
                AUTHORITY["EPSG","7030"]],
            AUTHORITY["EPSG","6326"]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433],
        AUTHORITY["EPSG","4326"]],
    PROJECTION["Mercator_1SP"],
    PARAMETER["central_meridian",0],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    EXTENSION["PROJ4","+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs"],
    AUTHORITY["EPSG","3857"]]
Origin = (-13539823.138956749811769,4690722.589982722885907)
Pixel Size = (0.122995666356360,-0.122995666356360)
Metadata:
  AREA_OR_POINT=Area
  TIFFTAG_DOCUMENTNAME=/mnt/dd/data/1417212380_DDSPIDER/tmp-0-0.tif
  TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
  TIFFTAG_XRESOLUTION=72
  TIFFTAG_YRESOLUTION=72
Image Structure Metadata:
  INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left  (-13539823.139, 4690722.590) (121d37'49.08"W, 38d47' 0.99"N)
Lower Left  (-13539823.139, 4690250.656) (121d37'49.08"W, 38d46'49.09"N)
Upper Right (-13539353.050, 4690722.590) (121d37'33.88"W, 38d47' 0.99"N)
Lower Right (-13539353.050, 4690250.656) (121d37'33.88"W, 38d46'49.09"N)
Center      (-13539588.094, 4690486.623) (121d37'41.48"W, 38d46'55.04"N)
Band 1 Block=3822x1 Type=Byte, ColorInterp=Red
  Mask Flags: PER_DATASET ALPHA 
Band 2 Block=3822x1 Type=Byte, ColorInterp=Green
  Mask Flags: PER_DATASET ALPHA 
Band 3 Block=3822x1 Type=Byte, ColorInterp=Blue
  Mask Flags: PER_DATASET ALPHA 
Band 4 Block=3822x1 Type=Byte, ColorInterp=Alpha

I am trying to create a kml version of a map tile using gdal_translate on a geotiff with alpha layer (link here) as follows:

gdal_translate -of KMLSUPEROVERLAY input.tif output.kml

however, the resulting kml file has a black area where the alpha layer should be - see here for a link to all the input and output files (and subdirectories produced by the operation).

Any ideas as to how I could produce a kml file without the black area (also how I could generate only a single standalone .kml file, rather than a .kml linking a bunch of subdirectories as in the zipfile linked) would be greatly appreciated.

Thanks

n.b. gdalinfo on the input geotiff:

Driver: GTiff/GeoTIFF
Files: input.tif
Size is 3822, 3837
Coordinate System is:
PROJCS["WGS 84 / Pseudo-Mercator",
    GEOGCS["WGS 84",
        DATUM["WGS_1984",
            SPHEROID["WGS 84",6378137,298.257223563,
                AUTHORITY["EPSG","7030"]],
            AUTHORITY["EPSG","6326"]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433],
        AUTHORITY["EPSG","4326"]],
    PROJECTION["Mercator_1SP"],
    PARAMETER["central_meridian",0],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    EXTENSION["PROJ4","+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext  +no_defs"],
    AUTHORITY["EPSG","3857"]]
Origin = (-13539823.138956749811769,4690722.589982722885907)
Pixel Size = (0.122995666356360,-0.122995666356360)
Metadata:
  AREA_OR_POINT=Area
  TIFFTAG_DOCUMENTNAME=/mnt/dd/data/1417212380_DDSPIDER/tmp-0-0.tif
  TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch)
  TIFFTAG_XRESOLUTION=72
  TIFFTAG_YRESOLUTION=72
Image Structure Metadata:
  INTERLEAVE=PIXEL
Corner Coordinates:
Upper Left  (-13539823.139, 4690722.590) (121d37'49.08"W, 38d47' 0.99"N)
Lower Left  (-13539823.139, 4690250.656) (121d37'49.08"W, 38d46'49.09"N)
Upper Right (-13539353.050, 4690722.590) (121d37'33.88"W, 38d47' 0.99"N)
Lower Right (-13539353.050, 4690250.656) (121d37'33.88"W, 38d46'49.09"N)
Center      (-13539588.094, 4690486.623) (121d37'41.48"W, 38d46'55.04"N)
Band 1 Block=3822x1 Type=Byte, ColorInterp=Red
  Mask Flags: PER_DATASET ALPHA 
Band 2 Block=3822x1 Type=Byte, ColorInterp=Green
  Mask Flags: PER_DATASET ALPHA 
Band 3 Block=3822x1 Type=Byte, ColorInterp=Blue
  Mask Flags: PER_DATASET ALPHA 
Band 4 Block=3822x1 Type=Byte, ColorInterp=Alpha