File Juicer
File Juicer for macOS
Overview of Formats

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Images

jpg jpeg 2000 gif png pdf wmf emf tiff eps pict bmp

Video

mov mpeg avi wmv

Sound

mp3 wav System 7 au aiff

Text

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From:

avi cab cache chm dmg doc emlx exe ithmb m4p mht mp3 pdf pps ppt raw swf wps xls zip and other formats

.dsc - Nikon Disk Identification File

The abbreviation could stand for "Digital Still Camera" or "description". Saved by Nikon cameras on flash cards, but no official information about it is available. The camera may use it to keep track of what is on the flash card, or keep data about the images which is not useful to put in the EXIF tags of image file.