laurb9 / cng2jpg

Convert "Complete National Geographic" CNG files to JPG for use under Linux

cng2jpg

Convert "Complete National Geographic" CNG files to JPG for use under Linux

Basic usage

copying from CD into local hard drive:

cng2jpg.py --src /run/media/_user_/CNG_DISC1/disc1/images --dst ~/CNG/discs/images

convert a hard drive copy

cng2jpg.py --src ~/CNG/discs [--remove]

Use --remove to get rid of .cng files as they are converted, to avoid needing extra 40+Gb of space for both jpg and cng.

References

"The cng files are all jpegs, XOR'd bitwise with 239"

http://www.subdude-site.com/WebPages_Local/RefInfo/Computer/Linux/LinuxGuidesByBlaze/appsImagePhotoTools/cng2jpgGuide/cng2jpg_guide.htm