There are only two known examples of video playback (from a file) within a (non-cloud) notebook:
Visualizations in Graph Theory with the Wolfram Language (at time 3:32)
Mathematica and CUDA, SIGGRAPH 2010 (at time 4:19)
Does anyone have access to these packages, or know how this wizardry was achieved?
Related:
- Related to this question, but mine is much more specific: Video processing in Mathematica
- Video encodings in Ubuntu
- About encodings: Import[] bug (video)?