If you are looking for the paper that explains this video, it is most likely one of the following based on NWO project IDs and data naming patterns:
: The Balinese Homesign Corpus research, which involves extensive video data collection, uses similar "Collection" and versioning terminology in its data management. Download File NWOxxxCOLLECTIONv221.mp4
While the exact filename "NWOxxxCOLLECTIONv221.mp4" does not appear in a single authoritative source, it matches the naming conventions used for data collections in papers funded by NWO projects, such as: If you are looking for the paper that