large texture size after convert

[ang88myt]

[ang88myt]

how can I reduce it to the same size as gltf? why the texture conversion is not 1:1? Please help.

[kcoley]

Hi @ang88myt. Due to occlusion metallic roughness texture unpacking and texture transforms with pillow, new images get generated, though pillow does not preserve the original compression. This step was needed since texture swizzling was not working on iOS 12.

There is an —optimize-textures flag that attempts to reduce file size at the expense of a bit longer export time.

[ang88myt]

Hi kcoley, thank you. could your confirm the usage below if it is correct way?
python gltf2usd.py -g ../path_to_read_glTF_file/file.gltf -o path_to_write_usd_file/file.usdz --optimize-textures