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[sdw] WebVMT: Investigate better out-of-band link handling (#1107)

From: Rob Smith via GitHub <sysbot+gh@w3.org>
Date: Wed, 12 Dec 2018 19:07:10 +0000
To: public-sdwig@w3.org
Message-ID: <issues.opened-390366681-1544641629-sysbot+gh@w3.org>
rjksmith has just created a new issue for https://github.com/w3c/sdw:

== WebVMT: Investigate better out-of-band link handling ==
VMT files include a [`url`](http://w3c.github.io/sdw/proposals/geotagging/webvmt/#dfn-webvmt-media-url-setting) attribute which defines the linked media file. This information is duplicated in the `tileurl` attribute of an HTML5 [`<track>`](https://www.w3.org/TR/html51/semantics-embedded-content.html#the-track-element) element when displayed in a web page.

The SDW IG review (#1094) raised the [question](https://github.com/w3c/sdw/issues/1099#issuecomment-444935636) of whether there is a better way to handle out-of-band (or non-embedded) links, to mitigate errors due to file renaming.

After further thought, the current approach seems entirely consistent with HTML's basic design. For example, an HTML file containing `<img src="myimage.jpg">` displays an image in a web page and suffers exactly the same issue if the linked image file is renamed, which indicates that the current design is probably the best.

HTML makes best effort to display the page, despite errors, so probably the best approach is to trigger a warning message if the URL is incorrect and cannot be resolved. However, I'm interested to hear any constructive alternatives.

Please view or discuss this issue at https://github.com/w3c/sdw/issues/1107 using your GitHub account
Received on Wednesday, 12 December 2018 19:07:12 UTC

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