WebVTT+JS and WebVTT+RDF

Semantic Web Interest Group,
Web Media Text Tracks Community Group,

Hello. I would like to share some thoughts on WebVTT+JS and WebVTT+RDF.

Timed Lambda Expressions (WebVTT+JS)

The following syntax example shows a way of embedding JavaScript in WebVTT tracks. The example provides two lambda functions for a cue, one to be called when the cue is entered and the other to be called when the cue is exited.

05:10:00.000 --> 05:12:15.000
enter:()=>{...}
exit:()=>{...}

Dynamic Graphs (WebVTT+RDF)

An example scenario for dynamic metadata is that of live streams and recordings from digital microscopes. In the scenario, dynamic metadata includes, but is not limited to, an instantaneous magnification scale and instantaneous time scale. Such metadata about the live streams and recordings from digital microscopes would be desirable to have including for machine learning and computer vision algorithms.

“RDF diffs” [1], or “RDF deltas” [1], could be utilized with WebVTT for representing timed changes to semantic graphs and such approaches could be useful for representing extensible and dynamic metadata about live steams and recordings from biomedical, scientific, and industrial sensors and devices.


Best regards,
Adam Sobieski
http://www.phoster.com

References
[1] https://www.w3.org/2012/ldp/wiki/LDP_PATCH_Proposals

See also
https://github.com/pchampin/linkedvtt
https://github.com/afs/rdf-delta