This document contains the draft text for the specification of additional colour type identifiers for AVC (Rec. ITU-T H.264 | ISO/IEC 14496-10) HEVC (Rec. ITU-T H.265 | ISO/IEC 23008-2). Text modifications are provided for specification of code point identifiers for YCgCo-R colour representation with equal luma and chroma bit depths and for Draft SMPTE ST 2128. The new code points for YCgCo-R are referred to as YCgCo-Re and YCgCo-Ro, where the number of bits added to a source RGB bit depth is 2 (i.e., even) and 1 (odd), respectively. Draft SMPTE ST 2128 specifies a colour representation referred to as IPT-PQ-C2. The affected sections are provided relative to corresponding basis texts (based on the 2021-08 edition of Rec. ITU-T H.264 (the most recent edition), the 2020 edition of ISO/IEC 23008-2 (not the 5th edition). Equation numbers and their cross-references have been updated without revision marking. Change marks are included to show the changes since the output (JVET-A1008), which reflect and some minor refinements and corrections since the previous draft.