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KevinH · 08-26-2011, 02:40 PM

BTW:

If you simply run the "strings" command on Kindle for PC 1.6.1 exe file you will not find the .azw4 string anyplace. If you run the same thing on Kindle for PC 1.7.0 exe file, you will find the .azw4 string so it is a new extension and a new file type!

So the question becomes: is this some new type of file (say a textbook or a magazine?) or is it the future file format for all .azw ebooks?

Interesting to say the least! Since it is a new format ... someone will have to reverse engineer its format so that at least Calibre can handle its metadata.

08-26-2011, 02:40 PM	#7
KevinH Sigil Developer Posts: 8,807 Karma: 6000000 Join Date: Nov 2009 Device: many	BTW: If you simply run the "strings" command on Kindle for PC 1.6.1 exe file you will not find the .azw4 string anyplace. If you run the same thing on Kindle for PC 1.7.0 exe file, you will find the .azw4 string so it is a new extension and a new file type! So the question becomes: is this some new type of file (say a textbook or a magazine?) or is it the future file format for all .azw ebooks? Interesting to say the least! Since it is a new format ... someone will have to reverse engineer its format so that at least Calibre can handle its metadata.