bento4Bento4 is a C++ class library and tools desned to read and write ISO-MP4 files. In addition to supporting ISO-MP4, Bento4 provides support for multiple DRM systems that are compatibleThere is one SDK for each target platform. Once you download the SDK for your platform, you must unzip it. You will obtain a directory named Bento4-SDK-. (ex: Bento4-SDK-1-4-3