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Status: WontFix
Owner: ----
Closed: Aug 2013



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Issue 11: Provide specification or explanation for subtitled content

Reported by renru...@gmail.com, May 19 2010

Issue description

I see subtitles as an fundamental part of a media specification, specially
for accessibility purposes, and I don't see them specified, not even
mentioned in the WebM Project site faqs and docs.

While subtitles don't have as many different specifications and
implementations as video and audio formats, and even the Matroska
documentation writers took their time to describe the few of them, I'd like
to see some sort of guarantees if webm-specific media players will show my
embed [optionally multi-language] subtitles or not.

So this is request to the project team to discuss and clarify this
standardization issue of the Subtitle Track, if there is any.
 

Comment 1 by renru...@gmail.com, May 19 2010

Commenting on myself, correcting the "mention" part above, after a google search in
the site(http://www.webmproject.org/code/specs/container/):

Demuxer and Muxer Guidelines
---
Initial WebM release does not support subtitles.
    * WHATWG / W3C RFC will release guidance on subtitles and other overlays in HTML5
<video> in the near future. WebM intends to follow that guidance.

I see this remains an open issue to be resolved in the future.

Comment 2 by iss...@webmproject.org, Mar 16 2011

Project Member
Owner: slavarnway@google.com

Comment 3 by johannko...@google.com, Mar 16 2011

Project Member
 Issue 14  has been merged into this issue.

Comment 4 by johannko...@google.com, Mar 16 2011

Project Member
Owner: johannko...@google.com
Status: NeedMoreInfo
Waiting on WHATWG / W3C

Comment 5 by johannko...@google.com, Sep 27 2011

Project Member
Owner: matthewjheaney@google.com

Comment 6 by matthewjheaney@google.com, Feb 15 2012

Project Member
Status: Accepted
We are currently looking at embedding WebVTT in WebM:

http://wiki.webmproject.org/webm-metadata/temporal-metadata/webvtt-in-webm

Comment 7 by matthewjheaney@google.com, Feb 15 2012

Project Member
Owner: ----
Status: Available

Comment 8 by jz...@google.com, Feb 29 2012

Project Member
 Issue 353  has been merged into this issue.

Comment 9 by louquillio@google.com, Aug 13 2013

Project Member
Status: WontFix
Closing for now. Our technical approach has been decided and it's under active development.

http://wiki.webmproject.org/webm-metadata/temporal-metadata

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