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I've run across a couple of "should" recommendations for things that do not appear to solve any problem, and in some cases discourage useful practices. And, validators tend to flag warnings if the rec…
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To avoid confusion, it would be useful to add a note that ebutts:linePadding can only use 'c'.
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I realized a test failure on Java 9 and would like to use that issue to track some differences between the used JVM.
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A number of important assumptions as well as features present in IMSC are based on interoperability goals that are not documented in the specification or elsewhere. Because a reader may not necessaril…
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Appendix N.2 [1] describes the cases when time expressions include frames and subframes, and when it includes ticks, but not when it includes fractions of seconds. This usage is present in EBU-TT-D [2…
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The _[construct effective content profile]_ does not allow the _effective content profile_ to be set by inspection of the document, beyond the values of `ttp:contentProfiles` and `ttp:profile`.
Thi…
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Depends on https://github.com/w3c/ttml2/issues/480
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The following config file produces runtime errors, mainly concerned with configuration.
```json
{
"nodes": {
"node1": {
"id": "producer1",
"type": "simple-producer",
"…
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The only conformance text on the subject is:
6.2 Foreign Element and Attributes
A Document Instance MAY contain elements and attributes that are neither specifically permitted nor forbidden by a …
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`ebutts:linePadding` as specified in EBU-TT-D and referenced by IMSC 1.0.1 has been adopted by the industry.
TTML2 provides similar capabilities by adding support for padding on span (see https://w…