Details on Product TTML2

All Issues

New issues for this product are notified to (change it).

There are 132 issues listed in the system.

ID State Title Raised on Product Open Actions
ISSUE-25 (edit)
role parameters
OPEN role parameters support 2008-12-05 TTML2 0
ISSUE-179 (edit)
px measure
OPEN Interpreting the pixel measure 2012-08-24 TTML2 0
ISSUE-201 (edit)
OPEN How to specify aspect ratio to understand positioning that may apply for display or video. 2013-02-21 TTML2 0
ISSUE-210 (edit)
rgba() alpha value space
OPEN The values for alpha in rgba() don't correspond to CSS3 Color definitions 2013-05-15 TTML2 0
ISSUE-231 (edit)
Individual character rotation
OPEN Individual character rotation 2013-05-30 TTML2 0
ISSUE-237 (edit)
Inline space
OPEN Inline space 2013-05-30 TTML2 0
ISSUE-243 (edit)
OPEN smpte:information (source material information) 2013-05-30 TTML2 0
ISSUE-270 (edit)
OPEN Appendix N assumption that root temporal extent corresponds with the beginning of a related media object 2013-08-12 TTML2 0
ISSUE-283 (edit)
Deterministic Presentation
OPEN Deterministic text wrapping and presentation 2013-10-10 TTML2 0
ISSUE-284 (edit) OPEN value of lineHeight 2013-10-11 TTML2 0
ISSUE-288 (edit)
Document Segmentation
OPEN Rules for splitting and accumulating documents 2013-10-23 TTML2 0
ISSUE-293 (edit)
OPEN Specify date as well as hours, minutes and seconds in time expressions 2013-10-31 TTML2 0
ISSUE-302 (edit)
line spacing vs line area height
OPEN Should background of a span be height of text in line or computed lineHeight? 2014-03-20 TTML2 0
ISSUE-324 (edit)
Prefer end to dur on generated out-of-line regions
OPEN Prefer end to dur on generated out-of-line regions 2014-07-09 TTML2 0
ISSUE-328 (edit)
John Birch
OPEN ittm:altText should be in TT namespace in TTML 2.0 2014-07-23 TTML2 0
ISSUE-335 (edit)
Negative times for offsets
OPEN In order to handle offsets between start time in TTML docs and start time in video, allow negative times to be used in fragment begin times. 2014-08-14 TTML2 0
ISSUE-351 (edit)
Update IANA registration for TTML2
OPEN Update IANA registration for TTML2 2014-10-17 TTML2 0
ISSUE-352 (edit)
Add Media Registration Annex
OPEN Add Media Registration Annex 2014-10-17 TTML2 0
ISSUE-353 (edit)
Normatively define short code processorProfiles parameter
OPEN Normatively define short code processorProfiles parameter 2014-10-17 TTML2 0
ISSUE-355 (edit)
OPEN Add support for marquee style semantics 2014-11-17 TTML2 0
ISSUE-358 (edit)
Sequence support
OPEN Add identifier support for related ordered sequences of documents 2014-12-10 TTML2 0
ISSUE-360 (edit) OPEN Use of content encoding 2015-01-01 TTML2 0
ISSUE-361 (edit) OPEN Add ttm:mediaTimestamp (or equivalent) attribute. 2015-01-01 TTML2 0
ISSUE-363 (edit)
font shear
OPEN Add support for font shear 2015-01-06 TTML2 0
ISSUE-365 (edit)
html5 mapping
OPEN Define HTML5 Mapping 2015-01-14 TTML2 0
ISSUE-366 (edit)
condition vs xml:id
OPEN xml:id uniqueness needs to be broken for some uses of condition 2015-01-16 TTML2 0
ISSUE-370 (edit)
Implement Action-372 edits
OPEN Implement Requirements conformance changes described in Action-372 2015-02-12 TTML2 0
ISSUE-373 (edit) OPEN tts:lineHeight should apply to span 2015-02-22 TTML2 0
ISSUE-374 (edit) OPEN Generalize tts:fontVariantPosition 2015-02-23 TTML2 0
ISSUE-379 (edit)
ruby text font size inheritance
OPEN ruby text should used special inheritance algorithm 2015-03-21 TTML2 0
ISSUE-380 (edit)
Content area width is unclear
OPEN The width of content elements' areas is unclear, especially looking at the examples 2015-03-26 TTML2 0
ISSUE-381 (edit)
clarify timing concepts
OPEN Clarify timing concepts in relation to SMIL 2015-04-09 TTML2 0
ISSUE-383 (edit)
clarify local clockmode
OPEN Clarify the application specific usages of clockMode="local" 2015-04-09 TTML2 0
ISSUE-384 (edit)
displayAlign on content
OPEN tts:displayAlign may need to apply to content elements 2015-04-10 TTML2 0
ISSUE-385 (edit)
textAlign on div, body
OPEN tts:textAlign may need to apply to div, body 2015-04-10 TTML2 0
ISSUE-386 (edit)
No use case for "any" contentProfiles
OPEN There's no apparent use case for the "any" term in ttp:contentProfiles 2015-04-10 TTML2 0
ISSUE-387 (edit)
ipd or bpd on content images
OPEN Consider applying ipd or bpd to content images 2015-04-10 TTML2 0
ISSUE-389 (edit)
Embedded graphics requirement
OPEN Embedded graphics don't fully meet requirement 2015-06-05 TTML2 0
ISSUE-414 (edit) OPEN tts:direction should apply independently to paragraph (p) 2015-09-09 TTML2 0
ISSUE-10 (edit)
CLOSED Allowing pointers to pre-rendered audio forms of elements 2008-12-03 TTML2 0
ISSUE-20 (edit)
Region border
CLOSED Region border not supported 2008-12-05 TTML2 0
ISSUE-21 (edit)
window anchor points
CLOSED window anchor points not supported? 2008-12-05 TTML2 0
ISSUE-22 (edit)
window fade in/out
CLOSED window fade in/out not supported? 2008-12-05 TTML2 0
ISSUE-23 (edit)
CLOSED intermediate animation of extent 2008-12-05 TTML2 0
ISSUE-24 (edit)
CLOSED subscript and superscript support 2008-12-05 TTML2 0
ISSUE-72 (edit)
smooth scrolling
CLOSED Smooth scrolling by means of reference area offset 2009-04-24 TTML2 0
ISSUE-138 (edit)
Ruby support
CLOSED Standard extension to support W3C ruby markup 2009-07-03 TTML2 0
ISSUE-156 (edit)
semantics of missing #feature
CLOSED how to specify prohibitions in use of a feature 2012-02-15 TTML2 0
ISSUE-158 (edit)
background images
CLOSED background images 2012-02-15 TTML2 0
ISSUE-159 (edit)
Text orientation
CLOSED Text orientation in I18n script processing 2012-02-15 TTML2 0
ISSUE-160 (edit)
Centered flush left captions
CLOSED Centered flush left captions 2012-02-15 TTML2 0
ISSUE-161 (edit) CLOSED Is a new #metadata-foreign feature needed? 2012-02-23 TTML2 0
ISSUE-165 (edit)
set restrictions
CLOSED allowing set to animate more than one attribute. 2012-03-21 TTML2 0
ISSUE-167 (edit)
attribute syntax
CLOSED allowing attributes that have no semantics on specific elements 2012-04-13 TTML2 0
ISSUE-168 (edit)
padding style attribute
CLOSED Padding on tt:p and tt:span elements 2012-05-08 TTML2 0
ISSUE-170 (edit)
CLOSED Section 5.2 para 8 is vague regarding optionality of specifying profile in case where profile is negotiated/determined by 'document interchange process' 2012-06-07 TTML2 0
ISSUE-173 (edit) CLOSED presentation semantics of control characters and other unmapped characters 2012-08-08 TTML2 0
ISSUE-176 (edit)
extent and origin on blocks
CLOSED Adding support for extent and origin attributes on block elements 2012-08-23 TTML2 0
ISSUE-178 (edit)
Inital values
CLOSED initial values and style set calculations are unclear, especially for transformable attributes 2012-08-23 TTML2 0
ISSUE-183 (edit) CLOSED semantics of using profile in a document 2012-09-19 TTML2 0
ISSUE-193 (edit)
CLOSED Address SMPTE Questions for Region, Border, etc. related to character edge attributes 2012-10-24 TTML2 0
ISSUE-202 (edit) CLOSED restoring metadata support to style element 2013-04-01 TTML2 0
ISSUE-203 (edit)
CLOSED Add ttp:version to allow author to indicate which version of TTML content was created for. 2013-05-12 TTML2 0
ISSUE-204 (edit) version
CLOSED should probably be 2.0, not 1.1 2013-05-12 TTML2 0
ISSUE-205 (edit)
reintroduce id
CLOSED TTML probably shouldn't have adopted xml:id instead of id. 2013-05-12 TTML2 0
ISSUE-206 (edit)
profile combination
CLOSED Add ttp:profileCombination parameter 2013-05-12 TTML2 0
ISSUE-207 (edit)
initial value of color property
CLOSED Consider adding a way to specify a specific, initial value for tts:color. 2013-05-15 TTML2 0
ISSUE-208 (edit)
unsupported colors
CLOSED Define behavior for unsupported colors. 2013-05-15 TTML2 0
ISSUE-213 (edit)
text outline
CLOSED Advance notice of deprecation for textOutline 2013-05-23 TTML2 0
ISSUE-224 (edit)
3D text placement
CLOSED Support text placement in 3D coordinate spaces (not zIndex compositing). 2013-05-30 TTML2 0
ISSUE-225 (edit)
Relative tts:fontSize
CLOSED tts:fontSize as percentage of container dimensions 2013-05-30 TTML2 0
ISSUE-226 (edit)
<p> origin and extent
CLOSED <p> origin and extent 2013-05-30 TTML2 0
ISSUE-227 (edit)
<p> fade-up/down
CLOSED <p> fade-up and –down 2013-05-30 TTML2 0
ISSUE-228 (edit)
Ruby text
CLOSED Ruby text support 2013-05-30 TTML2 0
ISSUE-229 (edit)
Mixed progression
CLOSED Mixed vertical-horizontal progression direction 2013-05-30 TTML2 0
ISSUE-230 (edit)
Forced display
CLOSED Forced display 2013-05-30 TTML2 0
ISSUE-232 (edit)
Bottom-to-top text direction
CLOSED Bottom-to-top text direction 2013-05-30 TTML2 0
ISSUE-233 (edit)
Superscript and subscript
CLOSED Superscript and subscript character style 2013-05-30 TTML2 0
ISSUE-234 (edit)
Drop Shadow
CLOSED Drop Shadow character style 2013-05-30 TTML2 0
ISSUE-235 (edit)
CLOSED Feathering of shadow and outline effects 2013-05-30 TTML2 0
ISSUE-236 (edit)
Character spacing
CLOSED Character spacing, i.e. letter-spacing 2013-05-30 TTML2 0
ISSUE-238 (edit)
CLOSED smpte:backgroundImage 2013-05-30 TTML2 0
ISSUE-239 (edit)
CLOSED smpte:backgroundImageHorizontal 2013-05-30 TTML2 0
ISSUE-240 (edit)
CLOSED smpte:backgroundImageVertical 2013-05-30 TTML2 0
ISSUE-241 (edit)
CLOSED smpte:data (inline binary data) 2013-05-30 TTML2 0
ISSUE-242 (edit)
CLOSED smpte:image (inline image data) 2013-05-30 TTML2 0
ISSUE-244 (edit)
CLOSED m608:channel 2013-05-30 TTML2 0
ISSUE-245 (edit)
CLOSED m608:fieldStart 2013-05-30 TTML2 0
ISSUE-246 (edit)
CLOSED smpte:information@programName 2013-05-30 TTML2 0
ISSUE-247 (edit)
CLOSED smpte:information@programType 2013-05-30 TTML2 0
ISSUE-248 (edit)
CLOSED smpte:information@contentAdvisory 2013-05-30 TTML2 0
ISSUE-249 (edit)
CLOSED smpte:information@captionService 2013-05-30 TTML2 0
ISSUE-250 (edit)
CLOSED smpte:information@copyAndRedistributionControl 2013-05-30 TTML2 0
ISSUE-253 (edit)
timing on <br/>
CLOSED The break (<br/>) element type doesn't support timing attributes. 2013-06-07 TTML2 0
ISSUE-254 (edit)
region on <br/>
CLOSED The break (<br/>) element type doesn't support region attribute. 2013-06-11 TTML2 0
ISSUE-255 (edit)
style on <set/>
CLOSED The set (<set/>) element type doesn't support style attribute. 2013-06-12 TTML2 0
ISSUE-259 (edit)
CLOSED Define "closest" 2013-06-27 TTML2 0
ISSUE-261 (edit) CLOSED signaling document profile conformance is separate from decoder presentation requirements 2013-07-11 TTML2 0
ISSUE-262 (edit) CLOSED tts:extent semantics if value not supported 2013-07-11 TTML2 0
ISSUE-263 (edit) CLOSED profile feature set may not match intended feature constraints 2013-07-17 TTML2 0
ISSUE-266 (edit) CLOSED add ability for instance documents to declare what profile(s) it conforms to 2013-08-08 TTML2 0
ISSUE-273 (edit)
CLOSED Map fontFamily to external font file resources 2013-08-15 TTML2 0
ISSUE-274 (edit)
CLOSED Semantics of "prohibited" features 2013-08-20 TTML2 0
ISSUE-276 (edit)
CLOSED ttp:version vs ttp:profile vs ttp:contentProfile 2013-09-05 TTML2 0
ISSUE-277 (edit)
CLOSED Adding style inheritance for regions. 2013-09-05 TTML2 0
ISSUE-279 (edit)
CLOSED Add @designator attribute to ttp:profile element. 2013-09-05 TTML2 0
ISSUE-280 (edit)
CLOSED Add ability to define a profile from multiple profiles. 2013-09-06 TTML2 0
ISSUE-281 (edit)
non-inherited style initialization
CLOSED Non-inherited style initialization needs specification prose. 2013-10-08 TTML2 0
ISSUE-285 (edit)
CLOSED Align rendered rows within a region to each other, and the set to the region 2013-10-23 TTML2 0
ISSUE-286 (edit)
CLOSED Extend the background area behind rendered text to improve readability 2013-10-23 TTML2 0
ISSUE-287 (edit)
Binary Tunnelling
CLOSED Generic ability to tunnel BASE64 encoded binary files for legacy support 2013-10-23 TTML2 0
ISSUE-289 (edit)
CLOSED For TTML created for overlay on top of video, signal the aspect ratio of the video the TTML was created for 2013-10-31 TTML2 0
ISSUE-290 (edit)
Active Format Descriptor
CLOSED For TTML created for overlaying on video, add ebuttm:documentTargetActiveFormatDescriptor 2013-10-31 TTML2 0
ISSUE-291 (edit)
CLOSED Document Intended Target Bar Data 2013-10-31 TTML2 0
ISSUE-292 (edit)
CLOSED Specify target formats for which the TTML has been authored for easy conversion 2013-10-31 TTML2 0
ISSUE-297 (edit)
CLOSED Include Profile Designator in Profile Definition Document 2013-11-11 TTML2 0
ISSUE-298 (edit)
CLOSED Permit reuse of animation constructs by allowing multiple content elements to reference same out-of-line animation declaration 2013-11-15 TTML2 0
ISSUE-300 (edit)
tts:origin correct fallback
CLOSED Prior interpretation of the correct fallback for tts:origin 2014-02-26 TTML2 0
ISSUE-303 (edit)
<a> link element
CLOSED Permit HTML-style <a> elements to contain href links 2014-03-21 TTML2 0
ISSUE-323 (edit) CLOSED Note should not use normative compliance keywords. 2014-07-09 TTML2 0
ISSUE-325 (edit) CLOSED Add 'prohibited' value to @ttp:validation 2014-07-17 TTML2 0
ISSUE-329 (edit)
Implement Change Proposal 5
CLOSED Implement the mapping information in change proposal 5 2014-07-25 TTML2 0
ISSUE-344 (edit)
Note for unqualified attributes
CLOSED Add a clarification note expressing intent behind unqualified attribute names 2014-09-09 TTML2 0
ISSUE-346 (edit) CLOSED Need ttp:mediaDuration parameter 2014-09-21 TTML2 0
ISSUE-347 (edit)
ISD Syntax
CLOSED Define ISD Syntax for both UA internal use and interchange. 2014-09-23 TTML2 0
ISSUE-348 (edit) CLOSED Make metric optional in offset-time form of time expressions. 2014-09-23 TTML2 0
ISSUE-349 (edit) CLOSED Remove deprecation of ttp:markerMode 2014-09-24 TTML2 0
ISSUE-354 (edit)
letter spacing
CLOSED Add support for letter spacing style semantics 2014-11-17 TTML2 0
ISSUE-356 (edit)
text emphasis
CLOSED Add support for text emphasis semantics 2014-11-18 TTML2 0
ISSUE-357 (edit)
horizontal in vertical
CLOSED Add support for horizontal in vertical (tate-chu-yoko). 2014-11-18 TTML2 0
ISSUE-359 (edit)
CLOSED Add support for font kerning enable/disable 2014-12-18 TTML2 0
ISSUE-369 (edit)
Requirements numbers
CLOSED The R### numbers in Annex L are not all correct 2015-02-10 TTML2 0

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David Singer <>, Nigel Megitt <>, Chairs, Thierry Michel <>, Philippe Le Hégaret <>, Atsushi Shimono <>, Staff Contacts
Tracker: documentation, (configuration for this group), originally developed by Dean Jackson, is developed and maintained by the Systems Team <>.
$Id: index.php,v 1.326 2018/10/13 17:29:51 vivien Exp $