TOD is a binary video format developed by JVC for its tapeless cameras. Apart from JVC, TOD format is also used on standard camera brands such as Canon and Panasonic. It is used to store information into random-access media and uses MPEG-2 video codec compression. Also, TOD files can have an aspect ratio of 16:9 and 4:3.
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M4B is an audio filename extension for AAC format, which is developed by Apple Inc. It is mainly used on podcast and audiobook files. Typically, M4B files contain audio and other metadata like images, hyperlinks, and chapter markers. M4B files are DRM copy-protected and can be opened on Apple iTunes and QuickTime Player.