Who knows why! PICT files are much larger than jpg files, so I can't make the script nearly as useful as it should be - annoying indeed. Unfortunately applescript can't insert jpg files into iTunes, it's only permitted to add them after conversion to PICT files. It puts a smaller version as a jpg on the desktop. I've figured out an applescript that will reduce the image file size to whatever I want (using Graphic Converter). An iPod that might lose up to 10% of its capacity with large artwork files would see almost no loss of capacity with more compact artwork. The same 1.3M image file can be reduced to 160k in Graphic Converter at the same pixel size without meaningful visual degradation, and to only 40k at 300x300 pixels. These files will be attached to your mp3 files reducing available space on your iPod by about 10% for 128M mp3's. 4,000 mp3's might mean 1,000 images or about half a gig of disk space. The average size seems to be around 400k. Having lots of artwork of this size really chews into your hard disk. I got Disk Inventory X to help find the bigger ones, then used it's reveal in Finder option to view them by dragging onto Graphic Converter's icon. It's hard to discover just how big these files are - most people won't relaise! They are hidden in Music:iTunes:Artwork in a cryptically named set of folders. For example, artwork for "Travis - The Invisible Band" is a JPEG of 1.35 megabytes ⚠ despite being only a 600圆00 pixel image. Artwork files downloaded from the Apple site can be HUGE.
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