Implement Video transcript language changed events
Implement this by
1) adding transcript language code & file fields to show_transcript event.
2) adding additional UI CC/Language clicked events to know how students are interacting with the transcript UI
is show_transcript fired every time a transcript language is changed? – YES
are there default languages for transcript? The student does not have to actually change the transcript themselves.
The main metric that is being requested here is: the number of times each language was loaded.
Thus, if right now there is no default settings, the 'EN' language subscript loads may be artificially inflated.
We can help clarify intent by adding an event for students selecting a language from the CC menu.
Sample course with existing events:
Please note the interesting behavior around the CC button with multiple transcript options.
See also: BLD-1197