I've asked on the libtiff mailing list if they can help me, and this is the response I got from user John:
libtiff4 will write a smalltiff file by default. Bigtiff is not a compatible format, you need to specifically ask for it. Swap:
output = TIFFOpen( output_filename, "w" );
for
output = TIFFOpen( output_filename, "w8" );
enblend will need to set this flag and I guess they'll need a bit of UI to let people turn it on or off.
I've asked on the libtiff mailing list if they can help me, and this is the response I got from user John:
libtiff4 will write a smalltiff file by default. Bigtiff is not a
compatible format, you need to specifically ask for it. Swap:
output = TIFFOpen( output_filename, "w" );
for
output = TIFFOpen( output_filename, "w8" );
enblend will need to set this flag and I guess they'll need a bit of
UI to let people turn it on or off.