[PROPOSAL] Add support for TTML EBU-TT-D and IMSC1 profiles. #628

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claunia · 2026-01-29T16:49:27Z

claunia commented

2026-01-29 16:49:27 +00:00

Originally created by @donmartin00 on GitHub (Apr 12, 2021).

CCExtractor Version: 0.88

Necessary information

Is this a regression (i.e. did it work before)? {NO}
What platform did you use? {Window}
What were the used arguments? {No arguments - we did not notice any options for TTML EBU-TT-D or IMSC1. We would like to have these types of files recognized through this program.}

Originally created by @donmartin00 on GitHub (Apr 12, 2021). CCExtractor Version: 0.88 # Necessary information - Is this a regression (i.e. did it work before)? {NO} - What platform did you use? {Window} - What were the used arguments? `{No arguments - we did not notice any options for TTML EBU-TT-D or IMSC1. We would like to have these types of files recognized through this program.}`

claunia added the needs-commercial-sponsor label 2026-01-29 16:49:28 +00:00

claunia closed this issue

2026-01-29 16:49:28 +00:00

claunia commented

2026-01-29 16:49:29 +00:00

@bbgdzxng1 commented on GitHub (Jun 9, 2021):

Adding a link to the EBU-TT Toolkit in case a commercial sponsor is identified. "The kit is envisaged to contain a set of components for generating, testing and distributing subtitle documents in EBU-TT Part 3 format". It useful to have a test suite if and when the time comes - it looks like EBU-TT Team have put together an extensive test suite.

https://github.com/ebu/ebu-tt-live-toolkit
http://ebu.github.io/ebu-tt-live-toolkit/html/index.html

And for IMSC1...
https://github.com/w3c/imsc-tests
https://github.com/w3c/imsc/

For any passers-by seeing OP's feature request, here's a useful intersection and overlap of the various TTML profiles and where EBU-TT fits in.

@bbgdzxng1 commented on GitHub (Jun 9, 2021): Adding a link to the EBU-TT Toolkit in case a commercial sponsor is identified. _"The kit is envisaged to contain a set of components for generating, testing and distributing subtitle documents in EBU-TT Part 3 format"_. It useful to have a test suite if and when the time comes - it looks like EBU-TT Team have put together an extensive test suite. https://github.com/ebu/ebu-tt-live-toolkit http://ebu.github.io/ebu-tt-live-toolkit/html/index.html And for IMSC1... https://github.com/w3c/imsc-tests https://github.com/w3c/imsc/ For any passers-by seeing OP's feature request, here's a useful [intersection and overlap of the various TTML profiles](https://www.w3.org/AudioVideo/TT/docs/TTML-Profiles.html) and where EBU-TT fits in.

claunia commented

2026-01-29 16:49:29 +00:00

@cfsmp3 commented on GitHub (Dec 27, 2025):

Closing - no sponsor found, if someone wants to help, just reach out. Also, no samples.

@cfsmp3 commented on GitHub (Dec 27, 2025): Closing - no sponsor found, if someone wants to help, just reach out. Also, no samples.

claunia referenced this issue

2026-01-29 17:16:39 +00:00

[PR #628] [MERGED] pesheader-option #1471

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