Mock-up use of Selectors in Presentation API for video and audio transformations

[jronallo]

Description

Based on the discussion at the Hague working group meeting, we discussed some potential solutions for requesting transformations to videos that mirrored the kinds of transformations that can be done with the Image API. The set of possible transformations for video (and even audio) is potentially very large. Before we begin trying to specify what an A/V bitstream API might look like and because there is a large number of videos currently delivered, it would be good to get a better sense of what is most important. We can begin experimenting with transformations and possible parameters before trying to specify a bitstream API by giving information to clients through the Presentation API. One proposed solution which appeared to be a productive direction is the use of Selectors for manipulations on a video or audio file.

We could use a mock-up of what selectors might look like for video and audio. The example(s) would be best if they're within the context of a full manifest.

Variation(s)

• video
• audio

Additional Background

Image API Selectors:
http://iiif.io/api/annex/openannotation/#iiif-image-api-selector

[azaroth42]

In order to do this, we would need to know the types of transformations required.