IABM has posted video of Bill McLaughlin's NAB presentation on 2110-40 ancillary data and captioning, as well as a series of other presentations and video guides to the NAB 2018 IP Showcase focusing on SMPTE 2110.
Free registration is required to view the videos, but it is worth it!
2110-40 Presentation by EEG VP of Product Development Bill McLaughlin