atbcb · KMSOC · Jun 6, 2023 · Nov 8, 2022 · Dec 7, 2022 · Dec 7, 2022
diff --git a/_baselines/16AudioVideo.md b/_baselines/16AudioVideo.md
@@ -19,8 +19,9 @@ Evaluation of alternative content to assess its equivalence to audio-only or vid
 #### Audio-Only
 
 -   If audio is synchronized with video, slides, animations, or other time-based visual media, then use the synchronization test instead: Baseline [17. Synchronized Media](../17SyncMedia).
--   Audio intended as a media alternative for text does not require additional description if it is clearly labeled as such.
--   Short sounds used to notify the user, such as confirmation beeps and error notifications, are not included in this requirement. The check for this requirement is performed under Baseline [7. Sensory Characteristics](../07Sensory).
+-   Audio labeled as a media alternative for text does not require additional description if it is indeed equivalent to the text.
+-   Video labeled as a media alternative for text does not require additional description if it is indeed equivalent to the text.
+-   Short sounds used to notify the user, such as confirmation beeps and error notifications, are not included in this requirement.
 -   Information and/or instructions provided in the form of audio-only content must provide equivalent programmatic and/or textual cues; the check for this requirement is performed under Baseline [7. Sensory Characteristics](../07Sensory).
 
 #### Video-Only
@@ -36,14 +37,14 @@ Evaluation of alternative content to assess its equivalence to audio-only or vid
 
 #### Identify Content
 
-<p id="1IC">Pre-recorded audio-only content.</p>
+<p id="1IC">Pre-recorded audio-only content. Do not include media that is clearly labeled as a media alternative for text.</p>
 
 #### Test Instructions
 
 <ol id="1TI">
     <li id="1TI-1">Check that the content provides transcript(s) for audio-only content. [SC 1.2.1]</li>
     <li id="1TI-2">Check that the transcript is text (e.g., an image-only PDF would not be sufficient to pass this test). [SC 1.2.1]</li>
-    <li id="1TI-3">Play the audio-only content entirely.</li>
+    <li id="1TI-3">Play the audio-only content entirely while referring to the alternative.</li>
     <li id="1TI-4">Check that the information in the transcript is an accurate and complete representation of the audio-only content and includes relevant sounds in addition to dialogue, such as doors banging, sirens wailing, identification of speakers in dialogue, etc. [SC 1.2.1]</li>
 </ol>
 
@@ -56,7 +57,7 @@ Evaluation of alternative content to assess its equivalence to audio-only or vid
 
 #### Identify Content
 
-<p id="2IC">Pre-recorded video-only content.</p>
+<p id="2IC">Pre-recorded video-only content. Do not include media that is clearly labeled as a media alternative for text.</p>
 
 #### Test Instructions
 
@@ -70,7 +71,41 @@ Evaluation of alternative content to assess its equivalence to audio-only or vid
 
 <p id="2TR">If any of the above checks fail, then Baseline Test 16.2-VideoOnlyAlt fail.</p>
 
+### 16.3 Test Procedure for Audio Media Alternative (Prerecorded)
+
+**Baseline Test ID:** 16.3-AudioMediaAlternative
+#### Identify Content
+<p id="3IC">Pre-recorded audio-only that is clearly labeled as a media alternative for text.</p>
+
+#### Test Instructions
+<ol id="3TI">
+    <li id="3TI-1">Identify the text for which the media is an alternative.</li>
+    <li id="3TI-2">Play the media that is labeled as an equivalent alternative for the text.</li>   
+    <li id="3TI-3">Check that the meaningful audible information of the media is available in the text.</li>  
+</ol>
+
+#### Test Results
+<p id="3TR">If any of the above checks fail, then the audio-only is not a media alternative for text. Perform Baseline Tests <a href="#161-test-procedure-for-audio-only-prerecorded">16.1 Test Procedure for Audio-Only (Prerecorded)</a>. </p>
+
+### 16.4 Test Procedure for Video Media Alternative (Prerecorded)
+
+**Baseline Test ID:** 16.4-VideoMediaAlternative
+#### Identify Content
+<p id="4IC">Pre-recorded video-only that is clearly labeled as a media alternative for text.</p>
+
+#### Test Instructions
+<ol id="4TI">
+    <li id="4TI-1">Identify the text for which the media is an alternative.</li>
+    <li id="4TI-2">Play the media that is labeled as an equivalent alternative for the text.</li>   
+    <li id="4TI-3">Check that the meaningful visual information of the media is available in the text.</li>  
+</ol>
+
+#### Test Results
+<p id="4TR">If any of the above checks fail, then the video-only is not a media alternative for text. Perform Baseline Tests <a href="#162-test-procedure-for-video-only-prerecorded">16.2 Test Procedure for Video-only (Prerecorded)</a>. </p>
+
 ### Advisory: Tips for streamlined test processes
+- Baseline Tests 16.1 and 16.3 are tests for Audio-only files. It may make sense to perform Test 16.3 before Test 16.1.
+- Baseline Tests 16.2 and 16.4 are tests for Video-only files. It may make sense to perform Test 16.4 before Test 16.2.
 
 #### WCAG 2.0 Techniques
 

diff --git a/_baselines/17SyncMedia.md b/_baselines/17SyncMedia.md
@@ -16,7 +16,7 @@ order-number: 18
 
 ### Test Method Rationale
 
-Evaluation of captions and audio descriptions to assess its equivalence to synchronized media content generally involves a manual, cognitive comparison of the original content with its alternative(s).
+Evaluation of captions and audio descriptions to assess its equivalence to synchronized media content generally involves a manual, cognitive comparison of the original content with its alternative(s). Media that are clearly labeled as a media alternative for text are tested to assess equivalence to the text and if not equivalent, the tests for captions and audio descriptions are to be performed.
 
 ### Limitations, Assumptions, or Exceptions
 
@@ -82,7 +82,7 @@ Evaluation of captions and audio descriptions to assess its equivalence to synch
 
 **Baseline Test ID:** 17.4-CaptionsPrerecorded
 #### Identify Content
-<p id="4IC">Pre-recorded synchronized multimedia that is not a media alternative for text and is clearly labeled as such.</p>
+<p id="4IC">Pre-recorded synchronized multimedia. Do not include media that is clearly labeled as a media alternative for text.</p>
 
 #### Test Instructions
 <ol id="4TI">
@@ -104,7 +104,7 @@ Evaluation of captions and audio descriptions to assess its equivalence to synch
 **Baseline Test ID:** 17.5-ADPrerecorded
 
 #### Identify Content
-<p id="5IC">Pre-recorded synchronized multimedia.</p>
+<p id="5IC">Pre-recorded synchronized multimedia. . Do not include media that is clearly labeled as a media alternative for text.</p>
 
 #### Test Instructions
 <ol id="5TI">
@@ -135,11 +135,29 @@ Evaluation of captions and audio descriptions to assess its equivalence to synch
 #### Test Results
 <p id="6TR">If any of the above checks fail, then Baseline Requirement 17.6-CaptionsLive fails.</p>
 
+### 17.7 Test Procedure for Sync Media Alternative (Prerecorded)
+
+**Baseline Test ID:** 17.7-SyncMediaAlternative
+#### Identify Content
+<p id="7IC">Pre-recorded synchronized multimedia that is clearly labeled as a media alternative for text.</p>
+
+#### Test Instructions
+<ol id="7TI">
+    <li id="7TI-1">Identify the text for which the media is an alternative.</li>
+    <li id="7TI-2">Play the media that is labeled as an equivalent alternative for the text.</li>
+    <li id="7TI-3">Check that the meaningful audible information of the media is available in the text.</li>
+    <li id="7TI-4">Check that the meaningful visual information of the media is available in the text.</li>  
+</ol>
+
+#### Test Results
+<p id="7TR">If any of the above checks fail, then the multimedia is not a media alternative for text. Perform Baseline Tests <a href="#174-test-procedure-for-captions-prerecorded">17.4 Test Procedure for Captions (Prerecorded)</a> and <a href="#175-test-procedure-for-audio-description-prerecorded">17.5 Test Procedure for Audio Description (Prerecorded)</a> on the pre-recorded synchronized multimedia. </p>
+
 ### Advisory: Tips for streamlined test processes
 
 -   Testing synchronized media is different from testing Baseline [16. Audio-Only and Video-Only content](../16AudioVideo).
 -   Synchronized media players may be software or HTML.
 -   At Level AA, SC 1.2.5 applies to synchronized media. The related Level A requirement, SC 1.2.3, should be marked as ‘Not Tested’ in the test report. It is permissible for test processes to add a test for SC 1.2.3 (evaluate a full text alternative for equivalence). Adding such a test would exceed baseline test requirements and would not affect Baseline 17’s outcome.
+-   All synchronized multimedia should be tested. If the pre-recorded multimedia is labeled as an media alternative for text, confirm that it provides equivalent information as text. If it does not, then it is not a media alternative for text. Test the multimedia for captions and audio descriptions. It may make sense to perform Test 17.7 before testing for captions and audio descriptions.
 
 #### WCAG 2.0 Techniques
 The following sufficient techniques and/or common failures were considered when developing this test procedure for this baseline requirement:

diff --git a/_baselines/AppendixA1.html b/_baselines/AppendixA1.html
@@ -335,15 +335,25 @@ <h3>Baseline to Section 508/WCAG Requirement</h3>
             <td>1.2.1 Audio-only and Video-only (Prerecorded)</td>
         </tr>
         <tr>
-            <th scope="row"><a href="../16AudioVideo/#162-test-procedure-for-sc-121-video-only-prerecorded">16.2 Video-only (Prerecorded)</a></th>
+            <th scope="row"><a href="../16AudioVideo/#162-test-procedure-for-video-only-prerecorded">16.2 Video-only (Prerecorded)</a></th>
             <td><a href="../16AudioVideo/#2TI-1">16.2-1</a></td>
             <td>1.2.1 Audio-only and Video-only (Prerecorded)</td>
         </tr>
         <tr>
-            <th scope="row"><a href="../16AudioVideo/#162-test-procedure-for-sc-121-video-only-prerecorded">16.2 Video-only (Prerecorded)</a></th>
+            <th scope="row"><a href="../16AudioVideo/#162-test-procedure-for-video-only-prerecorded">16.2 Video-only (Prerecorded)</a></th>
             <td><a href="../16AudioVideo/#2TI-3">16.2-3</a></td>
             <td>1.2.1 Audio-only and Video-only (Prerecorded)</td>
         </tr>
+        <tr>
+            <th scope="row"><a href="../16AudioVideo/#163-test-procedure-for-audio-media-alternative-prerecorded">16.3 Audio Media Alternative (Prerecorded)</a></th>
+            <td><a href="../16AudioVideo/#2TI-1">16.3-3</a></td>
+            <td>related to 1.2.1 Audio-only and Video-only (Prerecorded)</td>
+        </tr>
+        <tr>
+            <th scope="row"><a href="../16AudioVideo/#164-test-procedure-for-video-media-alternative-prerecorded">16.4 Video Media Alternative (Prerecorded)</a></th>
+            <td><a href="../16AudioVideo/#2TI-3">16.4-3</a></td>
+            <td>related to 1.2.1 Audio-only and Video-only (Prerecorded)</td>
+        </tr>
         <tr>
             <th scope="row"><a href="../17SyncMedia/#171-test-procedure-for-media-player-controls">17.1 Media Player Controls</a></th>
             <td><a href="../17SyncMedia/#1TI-1">17.1-1</a></td>
@@ -389,6 +399,16 @@ <h3>Baseline to Section 508/WCAG Requirement</h3>
             <td><a href="../17SyncMedia/#6TI-3">17.6-3</a></td>
             <td>1.2.4 Captions (Live)</td>
         </tr>
+        <tr>
+            <th scope="row"><a href="../17SyncMedia/#177-test-procedure-for-media-alternatives-prerecorded">17.7 Test Procedure for Sync Media Alternative (Prerecorded)</a></th>
+            <td><a href="../17SyncMedia/#6TI-3">17.7-3</a></td>
+            <td>related to 1.2.2 Captions (Prerecorded)</td>
+        </tr>
+        <tr>
+            <th scope="row"><a href="../17SyncMedia/#177-test-procedure-for-media-alternatives-prerecorded">17.7 Test Procedure for Sync Media Alternative (Prerecorded)</a></th>
+            <td><a href="../17SyncMedia/#6TI-3">17.7-4</a></td>
+            <td>related to 1.2.5 Audio Description (Prerecorded)</td>
+        </tr>
         <tr>
             <th scope="row"><a href="../18Stylesheet/#181-test-procedure-for-meaningful-background-image">18.1 Meaningful Background Image</a></th>
             <td><a href="../18Stylesheet/#1TI-1">18.1-1</a></td>

diff --git a/_baselines/ChangeLog3.md b/_baselines/ChangeLog3.md
@@ -25,8 +25,10 @@ Note: Minor punctuation, formatting and spelling changes not included.
 | 13. Content Structure | Limitations, Assumptions, Exceptions: Added "A test for Visually Apparent Lists should not include navigation menus. While programmatic lists are often used to create navigation menus, menus may also be created using other techniques." |
 | 13.4 Visually Apparent Lists | Moved HTML code from Identify Content to Test Instructions, added description of visual list, added more detail to test instructions |
 | 16.1 Audio Only | Instruction 2: replaced image of text with an image-only PDF as a more real-world example |
-| 17.4 Captions (Prerecorded) and 17.5 Audio Descriptions (Prerecorded) | Identify Content of both: added "that is not clearly labeled as a media alternative for text" |
-| 17.7 Media Alternatives (Prerecorded) | New test added |
+| 16.1 and 16.2 | Added "Do not include media that is clearly labeled as a media alternative for text." |
+| 16.3 and 16.4 | New tests added for media alternatives for text |
+| 17.4 Captions (Prerecorded) and 17.5 Audio Descriptions (Prerecorded) | Identify Content of both: added "Do not include media that is clearly labeled as a media alternative for text." |
+| 17.7 Media Alternative (Prerecorded) | New test added for Sync media alternative (prerecorded) |
 | 18. CSS Content and Positioning | Accessibility Requirements: removed SC 1.3.1 |
 | 19.1 Frames | Instruction 1: separated to 2 test instructions |
 | Appendix A | Added Test Instructions with "check" and linked test instructions, sort function, links to Baselines and Test IDs |