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Intent to implement and ship: support ::cue pseudo-element from document.
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bec...@mozilla.com
Mar 29, 2017, 6:21:06 AM3/29/17
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Summary:
We are going to support ::cue(with no argument) pseudo-element for webvtt.
It allows styling the webvtt subtitle/caption text during video playback.
Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1318542
Spec: https://w3c.github.io/webvtt/#the-cue-pseudo-element
Platform coverage:
All platforms
Estimated or target release:
Firefox 55
Preference:
media.webvtt.pseudo.enabled, default is true.
DevTools bug:
None.
Do other browser engines implement this?
Yes, chrome, safari, opera
Web Developer Use-Cases:
write the ::cue style block in the document, then ::cue rules will be applied to the .vtt subtitle. Note that the ::cue style block can only appear in document, not in vtt file (not support yet).
<style>
::cue {
...
}
</style>
<video v>
<track src="subtitle.vtt">
</video>
Tests:
web-platform/tests/webvtt/rendering/cues-with-video/processing-model/selectors/*
Tests under the folder are disabled now, I'm going to enable/fix them.
We are going to support ::cue(with no argument) pseudo-element for webvtt.
It allows styling the webvtt subtitle/caption text during video playback.
Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1318542
Spec: https://w3c.github.io/webvtt/#the-cue-pseudo-element
Platform coverage:
All platforms
Estimated or target release:
Firefox 55
Preference:
media.webvtt.pseudo.enabled, default is true.
DevTools bug:
None.
Do other browser engines implement this?
Yes, chrome, safari, opera
Web Developer Use-Cases:
write the ::cue style block in the document, then ::cue rules will be applied to the .vtt subtitle. Note that the ::cue style block can only appear in document, not in vtt file (not support yet).
<style>
::cue {
...
}
</style>
<video v>
<track src="subtitle.vtt">
</video>
Tests:
web-platform/tests/webvtt/rendering/cues-with-video/processing-model/selectors/*
Tests under the folder are disabled now, I'm going to enable/fix them.
Chris Pearce
Mar 29, 2017, 6:23:05 PM3/29/17
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