A TP format is a BTTS (Beyond TV Transport Stream) file. In simple terms, it’s a transport stream for sending MPEG-2 or MPEG-1 data over the internet or using a cable. TP files are recorded using TV recorders like Dvico TViX and can open on popular programs like Apple QuickTime and Windows Media Player.
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.