The file sample you provide The file sample you provide *mostly* contains 0xFF bytes (not all bytes are 0xff, but ~62% from beginning is). It is not easy to analyze such samples, do you have another one (with some image with well-known object with known non-neutral colors). Generally, CustomCamera may work for FRV, but we need known colors to guess CFA. -- Alex Tutubalin @LibRaw LLC reply
The file sample you provide *mostly* contains 0xFF bytes (not all bytes are 0xff, but ~62% from beginning is).
It is not easy to analyze such samples, do you have another one (with some image with well-known object with known non-neutral colors).
Generally, CustomCamera may work for FRV, but we need known colors to guess CFA.