`thumbnail` property with duration or temporal selector

Open stephenwf opened this issue 1 year ago • 0 comments

With AV content, it's possible to provide a thumbnail, or a placeholder canvas to be shown before the content is displayed, but there is no way to provide thumbnails for time-stops.

It is supported by WebVTT: https://www.webtvsolutions.com/support.php?s=ws_webtv_docs&d=clips_video_thumbnails&lang=en with additional support for a spite-map style URLs.

Taking an example from the archive.org IIIF implementation of AV content, they have a list of thumbnails for the various time-stops that are used on the main site for previews while scrubbing.

For example: https://iiif.archive.org/iiif/3/APOLLO16MMLAUNCHVIEWS/manifest.json

Has the following thumbnails attached:

0001 seconds 0060 seconds 0120 seconds 0180 seconds 0240 seconds 0300 seconds 0360 seconds 0420 seconds 0480 seconds 0540 seconds 0600 seconds 0660 seconds 0720 seconds 0780 seconds 0840 seconds 0900 seconds 0960 seconds 1020 seconds 1080 seconds 1140 seconds 1200 seconds 1260 seconds 1320 seconds 1380 seconds 1440 seconds 1500 seconds 1560 seconds 1620 seconds 1680 seconds 1740 seconds 1800 seconds 1860 seconds 1920 seconds 1980 seconds 2040 seconds 2100 seconds 2160 seconds 2220 seconds 2280 seconds 2340 seconds 2400 seconds 2460 seconds 2520 seconds 2580 seconds 2640 seconds