TimedText/TTML2SecondEditionImplementationReport

TTML2 Second Edition (2e) Implementation Report

This document represents the Implementation Report of the Timed Text Markup Language 2 (TTML2) Second Edition (2e) Specification Candidate Recommendation. The intent of this report is to document Implementation Experience, a mandatory process step in order to advance to Proposed Recommendation.

Specifically, this report demonstrates that the CR Exit Criteria have been met by demonstrating that for each affected feature at least two implementations implement the change in TTML2 Second Edition:

The following information summarizes the results of reported testing and implementation of TTML2 functionality in NNNN implementations from NNNN different organizations.

Features changed, and relating tests

This section presents the features for which tests have been added for Second Edition, and details of the tests relating to the changes to those features:

Table 1 represents the features, tests and reported results of processors for the given test inputs.

Each row of this table reports on implementation test results for a specific test, where the columns are as follows:

1. Feature, linked to the feature in the TTML2 2nd Edition CR.
2. Test name, linked to the test file in the ttml2-tests repository.
3. Test type, Presentation or Validation.
4. Result designation, for each implementation.

Tests fall into one of two types:

• Presentation tests, designated Pres in the Test type column - these test a presentation processor's correct handling of the test content
• Validation tests, designated Val in the Test type column - these test a validator's correct handling of the test content, i.e. recognition of whether the test content is valid or invalid.

Designations used in implementation columns are as follows:

• (P) - Designates the implementation passed the test.
• (F) - Designates the implementation failed the test.
• (blank) - Designates that pass/fail data is not available for the test.

A pass (P) designation for a given test means the implementation does not report a false negative result, which is to say, the implementation does not report a negative (invalid content) result. A fail (F) designation for a given test means the implementation reports a negative result, which is to say, it fails to recognize valid content as being valid, but instead reports it as invalid.

Note some tests apply to more than one feature designator, and are thus duplicated in the table.

Table 1 - Table of features and related tests

			Skynav	BBC	Company 3	Company 4	Company 5
Feature	Test	Test type	TTT	Adhere	Impl 3	Impl 4	Impl 5
#animate	ttml2-valid-xml-id-missing	Val	P
	ttml2-invld-bad-animate-non-animatable	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-default	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-linear	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-paced	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-spline	Val	P
#animate-minimal	ttml2-invld-bad-animate-non-animatable	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-default	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-linear	Val	P
#animate-paced	ttml2-invld-bad-animate-non-animatable-discrete-paced	Val	P
#animate-spline	ttml2-invld-bad-animate-non-animatable-discrete-spline	Val	P
#animation	ttml2-valid-xml-id-missing	Val	P
#animation-version-2	ttml2-invld-bad-animate-non-animatable	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-default	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-linear	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-paced	Val	P
	ttml2-invld-bad-animate-non-animatable-discrete-spline	Val	P
	ttml2-invld-bad-set-non-animatable	Val	P
#audio	ttml2-valid-audio-in-body	Val	P
	ttml2-prstn-audio-in-body	Pres		P
#audio-description	ttml2-valid-audio-in-body	Val	P
	ttml2-prstn-audio-in-body	Pres		P
#chunk	ttml2-valid-data-embedding-chunked-zero-length	Val	P
	ttml2-invld-data-chunked-bad-length	Val	P
	ttml2-invld-data-chunked-with-base	Val	P
	ttml2-invld-data-chunked-with-condition	Val	P
#data	ttml2-valid-data-embedding-chunked-zero-length	Val	P
	ttml2-valid-data-embedding-reference	Val	P
	ttml2-valid-data-embedding-reference-missing-type	Val	P
	ttml2-valid-data-embedding-reference-with-metadata	Val	P
	ttml2-valid-data-embedding-simple-with-lwsp	Val	P
	ttml2-valid-data-embedding-simple-zero-length	Val	P
	ttml2-invld-data-chunked-bad-length	Val	P
	ttml2-invld-data-simple-bad-length	Val	P
	ttml2-invld-data-simple-non-alphabet	Val	P
#embedded-data	ttml2-valid-data-embedding-simple-with-lwsp	Val	P
	ttml2-valid-data-embedding-simple-zero-length	Val	P
#embedded-font	ttml2-prstn-font-embedding-family-invalid	Pres	P
#extent-root-version-2	ttml2-invlid-content-profile-extent-root-version-2	Val	P
#font	ttml2-valid-font-embedding-family-case-sensitive	Val	P
	ttml2-invld-font-embedding-family	Val	P
	ttml2-prstn-font-embedding-family-invalid	Pres	P
#fontSelectionStrategy	ttml2-prstn-font-selection-strategy-line-height-normal	Pres	P
#fontSelectionStrategy-character	ttml2-prstn-font-selection-strategy-line-height-normal	Pres	P
#fontShear	ttml2-valid-font-shear-real-syntax	Val	P
	ttml2-invld-bad-font-shear-real-syntax	Val	P
	ttml2-prstn-font-shear-linear-mapping	Pres	P
#image	ttml2-valid-image-in-body-png	Val	P
	ttml2-prstn-image-in-body	Pres	P
#image-png	ttml2-valid-image-in-body-png	Val	P
	ttml2-prstn-image-in-body	Pres	P
#layout	ttml2-valid-xml-id-missing	Val	P
	ttml2-prstn-region-no-default	Pres	P
#length-real-version-2	ttml2-valid-length-real-version-2	Val	P
#length-version-2	ttml2-valid-length-real-version-2	Val	P
#lineShear	ttml2-valid-line-shear-real-syntax	Val	P
	ttml2-invld-bad-line-shear-real-syntax	Val	P
	ttml2-prstn-line-shear-linear-mapping	Pres	P
#opacity-image	ttml2-valid-opacity-image-block	Val	P
	ttml2-valid-opacity-image-inline	Val	P
	ttml2-prstn-opacity-image-block	Pres	P
	ttml2-prstn-opacity-image-inline	Pres	P
#opacity-version-2	ttml2-valid-opacity-image-block	Val	P
	ttml2-valid-opacity-image-inline	Val	P
	ttml2-prstn-opacity-image-block	Pres	P
	ttml2-prstn-opacity-image-inline	Pres	P
#presentation-audio	ttml2-valid-presentation-audio	Val	P
#presentation-version-2	ttml2-invld-profile-designator-fragment-nested	Val	P
#profile-full-version-2	ttml2-valid-profile-combine-ignore	Val	P
	ttml2-invld-profile-designator-fragment-nested	Val	P
	ttml2-invld-profile-designator-registry-undefined	Val	P
	ttml2-invld-profile-use-fragment	Val	P
#profile-nesting	ttml2-invld-profile-designator-fragment-nested	Val	P
#profile-version-2	ttml2-invld-profile-designator-fragment-nested	Val	P
	ttml2-invld-profile-use-fragment	Val	P
#resources	ttml2-valid-data-embedding-simple-with-lwsp	Val	P
	ttml2-valid-data-embedding-simple-zero-length	Val	P
#ruby	ttml2-prstn-ruby-ignored-lwsp-container	Pres	P
	ttml2-prstn-ruby-ignored-lwsp-container-base	Pres	P
	ttml2-prstn-ruby-ignored-lwsp-container-text	Pres	P
#set	ttml2-valid-xml-id-missing	Val	P
#shear	ttml2-valid-shear-real-syntax	Val	P
	ttml2-invld-bad-shear-real-syntax	Val	P
	ttml2-prstn-shear-linear-mapping	Pres	P
#speak	ttml2-valid-speak-implied-audio	Val	P	P
	ttml2-valid-speak-implied-audio-disabled	Val	P
	ttml2-valid-speak-implied-audio-source	Val	P
#transformation-version-2	ttml2-invld-profile-designator-fragment-nested	Val	P
#xlink	ttml2-invld-xlink-href-nested-image	Val	P

Validation Test Results

This section presents the results of performing validation processing against specific test content of two types:

• Valid Content Tests - tests validator ability to recognize valid content
• Invalid Content Tests - tests validator ability to recognize invalid content

Valid Content Tests

Table 2 represents the reported results of performing TTML2 validation processing on valid TTML2 content. These tests verify that a validation processor recognizes valid content.

Each row of this table reports on implementation test results for a specific test, where the columns are

1. Test name, linked to the test file in the ttml2-tests repository.

Designations used in implementation columns are as follows:

• (P) - Designates the implementation passed the test.
• (F) - Designates the implementation failed the test.
• (blank) - Designates that pass/fail data is not available for the test.

A pass (P) designation for a given test means the implementation does not report a false negative result, which is to say, the implementation does not report a negative (invalid content) result. A fail (F) designation for a given test means the implementation reports a negative result, which is to say, it fails to recognize valid content as being valid, but instead reports it as invalid.

Table 2 - Validation Tests - Subtype - valid

	SKYNAV	BBC	Company 3	Company 4
Test	TTV	Adhere	Implementation 3	Implementation 4
ttml2-valid-audio-in-body	P
ttml2-valid-data-embedding-chunked-zero-length	P
ttml2-valid-data-embedding-reference	P
ttml2-valid-data-embedding-reference-missing-type	P
ttml2-valid-data-embedding-reference-with-metadata	P
ttml2-valid-data-embedding-simple-with-lwsp	P
ttml2-valid-data-embedding-simple-zero-length	P
ttml2-valid-font-embedding-family-case-sensitive	P
ttml2-valid-font-shear-real-syntax	P
ttml2-valid-image-in-body-png	P
ttml2-valid-isd-sequence-size-non-zero	P
ttml2-valid-isd-sequence-size-zero	P
ttml2-valid-isd-sequence-version-2	P
ttml2-valid-isd-single-version-2	P
ttml2-valid-length-real-version-2	P
ttml2-valid-line-shear-real-syntax	P
ttml2-valid-opacity-image-block	P
ttml2-valid-opacity-image-inline	P
ttml2-valid-presentation-audio	P
ttml2-valid-profile-combine-ignore	P
ttml2-valid-shear-real-syntax	P
ttml2-valid-speak-implied-audio	P	P
ttml2-valid-speak-implied-audio-disabled	P
ttml2-valid-speak-implied-audio-source	P
ttml2-valid-xml-id-missing	P

Invalid Content Tests

Table 3 represents the reported results of performing TTML2 validation processing on invalid TTML2 content. These tests verify that a validation processor recognizes and reports invalid content.

The rows and columns of this table follow the same format (and semantics) employed with Table 2 above, except that here, the tests contain content that is invalid in some manner.

A pass (P) designation for a given test means the implementation does not report a false positive result, which is to say, the implementation reports a negative (invalid content) result. A fail (F) designation for a given test means the implementation does not report a negative result, which is to say, it fails to recognize invalid content as being invalid, but instead reports it as valid.

Table 3 - Validation Tests - Subtype - invalid

	SKYNAV	Company 2	Company 3	Company 4
Test	TTV	Implementation 2	Implementation 3	Implementation 4
ttml2-invld-bad-animate-non-animatable	P
ttml2-invld-bad-animate-non-animatable-discrete-default	P
ttml2-invld-bad-animate-non-animatable-discrete-linear	P
ttml2-invld-bad-animate-non-animatable-discrete-paced	P
ttml2-invld-bad-animate-non-animatable-discrete-spline	P
ttml2-invld-bad-set-non-animatable	P
ttml2-invld-content-profile-extent-root-version-2	P
ttml2-invld-data-chunked-bad-length	P
ttml2-invld-data-chunked-with-base	P
ttml2-invld-data-chunked-with-condition	P
ttml2-invld-data-simple-bad-length	P
ttml2-invld-data-simple-non-alphabet	P
ttml2-invld-font-embedding-family	P
ttml2-invld-isd-sequence-bad-size-0-minus	P
ttml2-invld-isd-sequence-bad-size-0-plus	P
ttml2-invld-isd-sequence-bad-size-1-minus	P
ttml2-invld-isd-sequence-bad-size-1-plus	P
ttml2-invld-isd-sequence-bad-version-0	P
ttml2-invld-isd-sequence-bad-version-0-plus	P
ttml2-invld-isd-sequence-bad-version-1	P
ttml2-invld-isd-sequence-bad-version-1-plus	P
ttml2-invld-isd-sequence-bad-version-2-plus	P
ttml2-invld-isd-sequence-size-1-plus	P
ttml2-invld-isd-single-bad-version-0	P
ttml2-invld-isd-single-bad-version-0-plus	P
ttml2-invld-isd-single-bad-version-1	P
ttml2-invld-isd-single-bad-version-1-plus	P
ttml2-invld-isd-single-bad-version-2-plus	P
ttml2-invld-isd-single-nested-bad-version	P
ttml2-invld-profile-designator-fragment	P
ttml2-invld-profile-designator-fragment-nested	P
ttml2-invld-profile-designator-registry-undefined	P
ttml2-invld-profile-use-fragment	P
ttml2-invld-xlink-href-nested-image	P

Presentation Test Results

This section presents the results of performing presentation processing against specific test content of two types:

• Valid Presentation Tests - tests presentation processor ability to present valid content
• Invalid Presentation Tests - tests presentation processor ability to default to a specific behavior for some invalid content

Valid Presentation Tests

Table 4 represents the reported results of performing TTML2 presentation processing on TTML2 content. These tests verify that a presentation processor produces a presentation output that is considered (by the reporter) to be within the range of variation allowed by the TTML2 specification.

Each row of this table reports on implementation test results for a specific test, where the columns are

1. Test name, linked to the test file in the ttml2-tests repository.

Designations used in implementation columns are as follows:

• (P) - Designates the reporter considers that the implementation passed the test.
• (F) - Designates the reporter considers that the implementation failed the test.
• (blank) - Designates that pass/fail data is not available for the test.

Table 4 - Valid Presentation Tests

	SKYNAV	BBC	Company 3	Company 4
Test	TTT	Adhere	Implementation 3	Implementation 4
ttml2-prstn-audio-in-body		P
ttml2-prstn-font-selection-strategy-line-height-normal	P
ttml2-prstn-font-shear-linear-mapping	P
ttml2-prstn-image-in-body	P
ttml2-prstn-line-shear-linear-mapping	P
ttml2-prstn-opacity-image-block	P
ttml2-prstn-opacity-image-inline	P
ttml2-prstn-region-no-default	P
ttml2-prstn-ruby-ignored-lwsp-container	P
ttml2-prstn-ruby-ignored-lwsp-container-base	P
ttml2-prstn-ruby-ignored-lwsp-container-text	P
ttml2-prstn-shear-linear-mapping	P

Invalid Presentation Tests

Table 5 represents the reported results of performing TTML2 presentation processing on invalid TTML2 content. These tests verify that a presentation processor recognizes and produces acceptable result.

The rows and columns of this table follow the same format (and semantics) employed with Table 4 above, except that here, the tests contain content that is invalid in some manner.

A pass (P) designation for a given test means the implementation presents the expected result. A fail (F) designation for a given test means the implementation does not present the expect result.

Table 5 - Invalid Presentation Tests

	SKYNAV	Company 2	Company 3	Company 4
Test	TTT	Implementation 2	Implementation 3	Implementation 4
ttml2-prstn-font-embedding-family-invalid	P