[webvmt] Status Update

1. Progress Made
     i. Continued development of prototype polyfill for WICG DataCue API [1] to support synchronisation of video with timed metadata in web browsers.
    ii. Proposed change to expose HTML TextTrackCue constructor at MEIG meeting [2] on 4 March 2025.
    iii. Discussed details of proposed change to expose HTML TextTrackCue constructor at WICG DataCue meetings on 11 March 2025 [3] and 20 March 2025 [4].
    iv. Published explainer for proposed change to expose HTML TextTrackCue constructor [5] that enables custom cues for timed metadata in Javascript, including WICG DataCue API [1].
    v. Chaired session on Synchronising Sensors With Geotagged Video [6] at W3C Breakouts Day on 26 March 2025 to identify missing web requirements for geotagged video use cases with sensors from community feedback.
    vi. Updated Javascript playback engine on WebVMT.org website [7] with prototype features developed in OGC Testbeds including negative cue times, simplified interpolation and heading.
    vii. Continued participation in OGC Testbed-20 GIMI [8] to ensure that proposed design for GIMI video timed metadata is aligned with existing formats.

2. Next Steps
    i. Create short video summary of OGC Testbed-20 GIMI maritime and aerial use case results for OGC YouTube channel [9].
    ii. Continue participation in OGC Testbed-20 GIMI [8] to ensure that proposed design for GIMI video timed metadata is aligned with existing formats.
    iii. Continue alignment discussions with OGC GeoPose SWG [10].
    iv. Continue community outreach and identify more activities to promote progress towards the standardisation track.

[1] https://wicg.github.io/datacue/#datacue-interface
[2] https://www.w3.org/2025/03/04-me-minutes.html#56c2
[3] https://www.w3.org/2025/03/11-me-minutes.html
[4] https://www.w3.org/2025/03/20-me-minutes.html
[5] https://github.com/WICG/datacue/blob/main/text-track-cue-constructor.md
[6] https://www.w3.org/2025/03/breakouts-day-2025/#b-89d32797-5c4d-4bab-a9c0-0eca1ed1a114
[7] https://webvmt.org/demos
[8] https://portal.ogc.org/files/108074#GIMI
[9] https://www.youtube.com/user/ogcvideo
[10] https://www.ogc.org/projects/groups/geoposeswg