[ttml2] Pull Request: Clarify luminanceGain applicability

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

== Clarify luminanceGain applicability ==
Closes #796 by clarifying that `tts:luminanceGain` only applies when the document processing context requires absolute luminance pixel value outputs and only to sRGB pixel values.

See https://github.com/w3c/ttml2/pull/810

Received on Friday, 1 June 2018 14:48:43 UTC