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# Document title, URLs, estimated publication date
TTML Profiles for Internet Media Subtitles and Captions 1.1
https://rawgit.com/w3c/imsc/IMSC1.1-CR/imsc1/spec/ttml-ww-profiles.html
03 May 2018
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In light of #310, #193, #303, #308 and #309, I suggest that the temporal activity and timing semantics of TTML1 be clarified through the explicit algorithm below.
The proposed algorithm is intended…
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itts:fillLineGap as specified in IMSC 1.0.1 has been [adopted by the industry](https://www.dvb.org/resources/public/standards/a174_dvb_ttml_subtitling_systems.pdf).
tts:fillLineGap definition shoul…
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At present, the image profile prohibits the use of smpte:image, forcing authors to always use external images. I believe this a bad long term strategy and unnecessarily restrictive.
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How do we install this addon for firefox?
The below firefox doc did not help.
From:
https://support.mozilla.org/en-US/kb/find-and-install-add-ons-add-features-to-firefox
"For advanced users: Y…
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/cc @nigelmegitt , @palemieux
# Document title, URLs, estimated publication date
TTML Profiles for Internet Media Subtitles and Captions 1.2
https://www.w3.org/TR/ttml-imsc1.2/
Estimated publ…
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Derived from https://www.w3.org/Bugs/Public/show_bug.cgi?id=23507
The bug is long but my main takeaway was that WebKit implemented this ahead of a spec ([still seems to be there](https://github.com…
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### Version
Media3 main branch
### More version details
Subtitle parsing for a given DASH asset (DRM protected) works fine in `1.4.0-alpha01` but in `1.4.0-alpha02` and `1.4.0-beta01` the pla…
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# Link to internal transition
https://lists.w3.org/Archives/Team/w3t-comm/2020Jul/0218.html
# Link to previous transition
https://github.com/w3c/transitions/issues/245
cc @himorin @nigel…
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### Is your feature request related to a problem? Please describe.
hls@0.14 mostly worked fine for the core use case. hls@1 is approx. 45% larger. This isn't acceptable for things that load over th…