(See the manual for details.) This is useful:
File Juicer does't convert the images/sounds/videos it finds, but saves them unchanged in their original format if possible. It finds and extracts: JPEG, JP2, PNG, GIF, PDF, BMP, WMF, EMF, PICT, TIFF, Flash, ZIP, HTML, WAV, AVI, MOV, MP4, MPG, MP3, AIFF, AU, WMV, or text from files which contain data in those formats. In computer forensics this is called carving. Its specialty is to find and extract images, video, audio, or text from files which are hard to open in other ways. File Juicer is a drag-and-drop can opener and data archaeologist.