bento421 baris · Bento4 is a toolkit for creating and manipulating MP4 and MPEG DASHHLS media files. Learn how to use the tools, the library API, and the licensing options fromBento4 SDK Documentation – 314. 1. WHY USE BENTO4? 1.1 Overview (README.txt). Bento4AP4 is a C++ class library desned to read and write