[ttml-webvtt-mapping] suggested position alignment value "start" does not exist in WebVTT

pthopesch has just created a new issue for 
https://github.com/w3c/ttml-webvtt-mapping:

== suggested position alignment value "start" does not exist in WebVTT
 ==
In chapter 2.3.2 it is suggested to “Always provide the optional 
position alignment value 'start'.”

But according to the WebVTT specification the optional position 
alignment values can only be one of the following strings: 
„line-left“, „center“ and „line-right“ 

--> https://w3c.github.io/webvtt/#webvtt-position-cue-setting

Please view or discuss this issue at 
https://github.com/w3c/ttml-webvtt-mapping/issues/21 using your GitHub
 account

Received on Tuesday, 3 May 2016 18:30:02 UTC