[ttml2] Pull Request: Add tts:hdrAbsoluteLuminanceGain

palemieux has just submitted a new pull request for https://github.com/w3c/ttml2:

== Add tts:hdrAbsoluteLuminanceGain ==
Closes #233

See https://github.com/w3c/ttml2/pull/283

Received on Thursday, 23 March 2017 18:03:52 UTC