I ran into a strange problem today. I converted a large number of my comic files from CBR to CBZ using 7-zip. I un-rar-ed the files to folders, then zipped them back up using these settings:
7z a -mx0 -mmt4 my_new_comic_file.cbz *.*
a = archive
mx0 = no compression
mmt4 = use all 4 CPU cores
After I zipped up all my files and deleted the old CBRs, I rescanned the folder tree with Ubooquity. It processed the files but many of my newly zipped CBZs were not recognized. When I checked the Ubooquity log, I found errors like this one:
20160125 11:02:15 [Scanner thread] WARN com.ubooquity.f.a - Failed to read file, will try to guess format: M:\eBooks\Comics\Azrael\Azrael v2\Azrael v2 #003.cbz
20160125 11:02:15 [Scanner thread] WARN com.ubooquity.f.a - Failed to guess file format
This happened to a couple hundred files. I went to the specific file and opened it and read it in another reader/viewer (Honeyview), and I couldn't see anything wrong with it. I opened ComicRack and rescanned my folders and the comics showed up fine in ComicRack. Just because I couldn't think of anything else to try I had ComicRack convert the files to CBZ (even though they were already CBZ files). It took a while, but when it was finished, I rescanned with Ubooquity and all bad files comics were fixed.
That leads me to assume that whatever settings that I'm using when I manually zip the files aren't good for Ubooquity. So my question is, what settings should I use? I have a mess more CBRs to convert.
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