AES: Advanced Encryption Standard, also known as the encryption algorithm, widely used to secure video contents
ATOM: Basic data unit inside a MP4 video file that contains a header and a data field that can contain various metadata or information
CENC: Common Encryption (ISO/IEC 23001-7:2012) standardizes the way encryption is applied on video contents. MPEG-DASH specifications are referencing CENC.
CTR: Short name for Counter Mode, the most popular variant of AES encryption
ISO-BMFF: ISO Base Media File Format (ISO/IEC 14496-12:2012) is the newest generation specification of the MP4 container.
MDAT: The atom where MP4’s actual raw information is stored
MFRA: Movie Fragment Random Access atom
MOOV: Short for “Movie Atom,” defining the timescale, duration, and display characteristics of the movie, as well as subatoms containing information for each track in the movie
PIFF: Protected Interoperable File Format, a Microsoft specification for a file container able to support several encryptions and DRM systems
PSSH: The Protection System-Specific Header box contains metadata needed by a specific Content Protection system to decrypt the media content.
SAIO: Sample Auxiliary Information Offsets
SAIZ: Sample Auxiliary Information Sizes
SENC: Sample Specific ENCryption data
SID: SystemID, identifier of the DRM technology used
SIDX: Segment Index BoxTFDT: Track Fragment Decode Time
XLINK: XML Linking Language specification from the W3C