[ttml2] Aspect ratios when SAR specified, but DAR and PAR not specified.

skynavga has just created a new issue for https://github.com/w3c/ttml2:

== Aspect ratios when SAR specified, but DAR and PAR not specified. ==
In order to be consistent with IMSC1 7.7.1, we need to update H.1.2 to read as follows (or equivalent):

>a. if a related media object exists and has a defined DAR, then the resolved value of SAR is the display aspect ratio of the related media object and the value of PAR is then resolved according to H.1.3 Two Aspect Ratios below;
>b. otherwise, the resolved value of DAR is determined by the document processing context and the value of PAR is then resolved according to H.1.3 Two Aspect Ratios below.

Please view or discuss this issue at https://github.com/w3c/ttml2/issues/539 using your GitHub account

Received on Tuesday, 9 January 2018 05:06:26 UTC