MPEG-2 Transfer Characteristics

ISO/IEC 13818-2 (recommendation ITU-T h.262) provides for specifying the transfer characteristics in the Sequence_Display_Extension if the colour_description flag is set in the header. Listed below are the defined values, their description, and what transfer function the compositor will assign when importing.
valuedescriptionCompositor transfer function assigned
0(forbidden)default
1Recommendation ITU-R BT.709SMPTE170M
2Unspecified Videodefault
3reserveddefault
4Recommendation ITU-R BT.470-2 System Mgamma 2.2
5Recommendation ITU-R BT.470-2 System B, Ggamma 2.8
6SMPTE 170MSMPTE170M
7SMPTE 240M (1987)SMPTE240M
8Lineargamma 1.0
9-255reserveddefault
please note that gamma 1.0 is treated specially in the compositor and is absolutely linear, no power function is applied. (although if a power function were applied it should be very close to linear, only deviating due to computational limitations)
Previous
Index
Next
Carbon home
STNsoft home
Copyright © 2010 - 2014 STN Software, all rights reserved.