Open himorin opened 4 years ago
This looks like it might benefit from some close analysis (that I don't have time to do right now!) of the differences between the ARIB-TTML styling capabilities, those in TTML2 and those in HTML+CSS.
The Timed Text Working Group just discussed [WR/ARIB] Compatibility with ARIB-TTML / 5. Additional style control imsc#550
, and agreed to the following:
SUMMARY: More work needed to understand any semantic differences between similar features in ARIB-TT and TTML2
The Timed Text Working Group just discussed [WR/ARIB] Compatibility with ARIB-TTML / 5. Additional style control imsc#550 [continued]
.
The Timed Text Working Group just discussed [WR/ARIB] Compatibility with ARIB-TTML / 5. Additional style control imsc#550
, and agreed to the following:
SUMMARY: There are some overlaps and some gaps between the ARIB-TT styling attributes and those in TTML2. We are interested to know more about the usage, especially where there are gaps in TTML2.
Per: https://github.com/w3c/ttwg/issues/116 Comment 3 (https://github.com/w3c/imsc/issues/545), 5
ARIB-TTML has the attributes to enhance its presentation capability. The “arib-tt:border” attribute specifies the border appearance of the region defined by an element such as div, p, and span. Similarly, the “arib-tt:marquee” attribute for scrolling a text, the “arib-tt:ruby” for ruby, the “arib-tt:letter-spacing” for manipulation of letter spacing, and “arib-tt:text-shadow” for controlling text shadow are available.