Ability to control and link between multiple viewing windows on same timeline

[zimeon]

Description

I’ve produced an exhaustive restoration of a old film and want to showcase the restoration, both the main film and sources/segments/commentary as a single continuous viewing experience. A very controlled experience can be done on a single canvas (which has one timeline) but additional facilities would be required to facilitate this with multiple viewing windows.

Variation(s)

Also interested in exhibiting all the extra / surplus / repeat / unclean / cleaned / previously-digitised / re-coloured footage in a more interactive or curated viewing experience, alongside the restoration. In this case: content will overlap, repeat, over-run the timeline of the main film.

I have multiple recordings of multiple scores which I want to provide to the user.

Additional Background

BFI use case explored at BL 2017-02 workshop

[zimeon]

From discussion at BL workshop:

• Synchronous playback that can extend before and after the "main" artefact. Might have top level canvas 8 hours, restoration canvas 6 hours, annotated starting 1 hour in to top.
• Other content is annotated into first and last hour of top, with some overlap.
• Potential for independent clocks in different manifests/canvases, with links to start them either automatically or manually

General requirement to link from part of timeline in A to part of timeline in B:

• related ranges, with description/label/metadata etc. alternate perhaps?
• viewer can then present UI to switch between current alternates, or 2-up them
• possible transitivity confusions, may need more thinking

Might replace related with a more complex list of related items to be shown to the user when the user views the described resource, e.g.:

{
  "type": "Range",
  "links": [ {
        "type": "Display?" // as:Link,
        "label": "Alternate Camera Angle (View 6)",
        "href":  {"id": "http://example.org/.../range/7", "type": "Range"}
        // why Range and not Canvas with time fragment?
    }, // more links here ...
  ]
}

[zimeon]

Consensus at meeting is that the idea of having multiple viewing windows tied to a single timeline with links and controls between them is a significant step up in complexity from our current use cases. Will defer this for now.