International organisation for standardisation organisation internationale de normalisation

BL: Base layer.

BoG: Break-out group.

BR: Bit rate.

CABAC: Context-adaptive binary arithmetic coding.

CBF: Coded block flag(s).

CD: Committee draft – the first formal ballot stage of the approval process in ISO/IEC.

CE: Core experiment – a coordinated experiment conducted after the 3rd or subsequent JCT-VC meeting and approved to be considered a CE by the group.

CGS: Colour gamut scalability (historically, coarse-grained scalability).

CL-RAS: Cross-layer random-acess skip.

Consent: A step taken in ITU-T to formally consider a text as a candidate for final approval (the primary stage of the ITU-T "alternative approval process").

CTC: Common test conditions.

CVS: Coded video sequence.

DCT: Discrete cosine transform (sometimes used loosely to refer to other transforms with conceptually similar characteristics).