LB or LDB: Low-delay B – the variant of the LD conditions that uses B pictures.
LD: Low delay – one of two sets of coding conditions designed to enable interactive real-time communication, with less emphasis on ease of random access (contrast with RA). Typically refers to LB, although also applies to LP.
LM: Linear model.
LP or LDP: Low-delay P – the variant of the LD conditions that uses P frames.
LUT: Look-up table.
LTRP: Long-term reference pictures.
MANE: Media-aware network elements.
MC: Motion compensation.
MPEG: Moving picture experts group (WG 11, the parent body working group in ISO/IEC JTC 1/SC 29, one of the two parent bodies of the JCT-VC).
MV: Motion vector.
NAL: Network abstraction layer (as in AVC and HEVC).
NB: National body (usually used in reference to NBs of the WG 11 parent body).