ISSUE-439: #length-pixel forbidden [TTML WebVTT mapping note] from Timed Text Working Group Issue Tracker on 2015-09-23 (public-tt@w3.org from September 2015)

From: Timed Text Working Group Issue Tracker <sysbot+tracker@w3.org>
Date: Wed, 23 Sep 2015 04:16:59 +0000
To: public-tt@w3.org
Message-Id: <E1ZebUJ-0002n2-BS@deneb.w3.org>

ISSUE-439: #length-pixel forbidden [TTML WebVTT mapping note]

http://www.w3.org/AudioVideo/TT/tracker/issues/439

Raised by: Pierre-Anthony Lemieux
On product: TTML WebVTT mapping note

Although specifying lengths in pixels should generally be discouraged, I have seen many TTML documents use them.

As long as tts:extent is specified on <tt> using "px" metric, can't "px" coordinates be converted to percentage coordinates by merely dividing the horizontal (vertical) component by the number of tts:extent pixels in the horizontal (vertical) direction?

Received on Wednesday, 23 September 2015 04:17:00 UTC