Alternate webp reference output for newer version of webp library.
Alternate webp reference output for newer version of webp library.

cwilling/oiio,scott-wilson/oiio,mcanthony/oiio,lgritz/oiio,bdeluca/oiio,YangYangTL/oiio,OpenImageIO/oiio,scott-wilson/oiio,bdeluca/oiio,YangYangTL/oiio,sambler/oiio,sambler/oiio,cwilling/oiio,scott-wilson/oiio,OpenImageIO/oiio,cwilling/oiio,sambler/oiio,lgritz/oiio,lgritz/oiio,micler/oiio,mcanthony/oiio,cwilling/oiio,sambler/oiio,mcanthony/oiio,micler/oiio,mcanthony/oiio,OpenImageIO/oiio,scott-wilson/oiio,lgritz/oiio,bdeluca/oiio,YangYangTL/oiio,YangYangTL/oiio,bdeluca/oiio,micler/oiio,micler/oiio,OpenImageIO/oiio