[ttml2] Add non-normative Appendix to cover SDR compositing (#1119)

jmccrossan-fox has just created a new issue for https://github.com/w3c/ttml2:

== Add non-normative Appendix to cover SDR compositing  ==
Appendix Q (non-normative) covers High Dynamic Range Compositing. Consider adding an additional non-normative appendix to cover SDR compositing of sRGB subtitle code values (mapping from sRGB Gamma 2.2 / Peak White 80nits) where the presentation output is BT.2020 or BT.709 (Gamma 2.4 / Peak White 100nits).

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/1119 using your GitHub account

Received on Thursday, 13 June 2019 19:39:53 UTC