This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
In WebVTT we have cue setting such as the text size "S:" and line position "L:", which can be specified either with a percentage value or an integer without a unit specification. This means that a specification such as "S:55" could be interpreted either as em or px. IIUC, "px" is meant to be the default CSS unit to interpret the value as, but it's not clear from the spec. Another developer that read the spec thought it was "em". I think we should specify what CSS unit the value is to be interpreted as in the CSS properties section: http://www.whatwg.org/specs/web-apps/current-work/webvtt.html#applying-css-properties-to-webvtt-node-objects
EDITOR'S RESPONSE: This is an Editor's Response to your comment. If you are satisfied with this response, please change the state of this bug to CLOSED. If you have additional information and would like the editor to reconsider, please reopen this bug. If you would like to escalate the issue to the full HTML Working Group, please add the TrackerRequest keyword to this bug, and suggest title and text for the tracker issue; or you may create a tracker issue yourself, if you are able to do so. For more details, see this document: http://dev.w3.org/html5/decision-policy/decision-policy.html Status: Rejected Change Description: no spec change Rationale: It's not 'em', 'px', 'mm', or any other CSS unit. It's lines. It doesn't involve CSS at all.
Yup, understood that later, too.