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Re: [sdw] WebVMT & MapML: Shared goals (#1273)

From: Rob Smith via GitHub <sysbot+gh@w3.org>
Date: Fri, 06 Aug 2021 14:05:07 +0000
To: public-sdwig@w3.org
Message-ID: <issue_comment.created-894284343-1628258705-sysbot+gh@w3.org>
@Malvoz Thanks for reaching out.

 1. Perhaps I've misunderstood but I see no mention of the mechanism by which to synchronise location content with the media timeline in Maps4HTML/HTML-Map-Element-UseCases-Requirements#248. This is the key issue that WebVMT addresses for timed metadata and I'm unclear how this problem can be overcome using only static HTML.

 1. WebVMT is deliberately agnostic of the underlying web map API and aims to make dynamic media metadata more accessible in user agents - particularly through JavaScript APIs due to the transient nature of the content.

 1. A version of the [TrkdVideo](https://www.awayteam.co.uk/services/trkdvideo) engine provides WebVMT support for the [webvmt.org](https://webvmt.org) website. WebVMT content can be manually tested using the [mobile demo](https://webvmt.org/webvmt/demos/mobile) which includes syntax checking and error reporting features. This code already supports multiple web map APIs and I'm happy to discuss adding MapML as yet another entry in the current list to enable experimentation in the Maps4HTML CG.

 1. The geospatial community seems to favour 'lon' and the web community prefers 'lng' as an abbreviation for longitude. WebVMT uses 'lng' as the web is its primary focus.

I hope this helps.

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