timeMode=loop and caption annotations

[azaroth42]

If there's a video or audio playing with timeMode=loop, and the canvas is longer than the timed media, and there are annotations associated with timed parts of the media (such as captions, but could be anything) ... how can the clock reset for the looping media be aligned with the other annotations?

Is this a case where you'd annotate a Canvas with the audio and the other annotations, and then annotate the canvas into the larger one with loop? I believe that would work but would like a second opinion. If not, then is there an existing solution, or do we need more specification machinery?

[azaroth42]

Another scenario which I think we deal with (by calling it an error):

Video lasts for 120 seconds, annotated with timeMode=trim to a 60 second canvas. There are captions for the full video.
No problem so far -- the captions for the second minute just won't render as they're out side the timeline of the canvas.

But if you put the annotations into a search API, then they could be discovered, even though the canvas would never render them. Don't Do That Then?

[azaroth42]

This seems like a recipe, not an issue. Propose transfer to cookbook repo.

[glenrobson]

Cookbook group agree it would be good to look at creating some timeMode recipes.