This standard specifies the mapping of uncompressed pictures into the MXF generic container. This MXF body is suitable for the mapping of all sampling grids and sampling formats including but not limited to those defined by ITU-R BT.601, ITU-R BT 656, ITU-R BT 709, SMPTE 125M, SMPTE 267M, SMPTE 274M, and SMPTE 296M. Provision is made for mapping of the active picture area alone or of larger sampling grids, including some or all of the horizontal and vertical ancillary data areas. Provision is made for alignment of the stored sampling grid to memory block size boundaries. This standard defines SMPTE universal labels that uniquely identify specific uncompressed implementations. This standard defines uncompressed picture essence elements that may be used as elements in content packages within an MXF generic container.