21422mp4 -

While the multimedia systems paper is the primary match, the string "21422" also appears in unrelated technical contexts:

In the Opera Browser development changelogs, DNA-21422 refers to a specific task for creating internal browser tools ( opera:browserjs ). 21422mp4

A versatile digital multimedia container format primarily used to store video, audio, subtitles, and images. While the multimedia systems paper is the primary

Some research repositories use "21422" as a file ID for supplementary video material (e.g., in biological studies regarding ArcGIS data or zebrafish motility). 21422mp4

Included in the proceedings of various multimedia systems conferences (e.g., SciTePress ).