From 92fe9f276847d6f47694d3ea9240069a6499604c Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Mon, 10 May 2021 21:46:28 +0100 Subject: [PATCH 01/12] Tweak understanding for 1.2.3 and 1.2.5 * turn the "During existing pauses..." sentence around, so as not to suggest that an exception exists * add mention of audio ducking (quack) * add a note for 1.2.3 that explicitly says that a lack of gaps is not an excuse/exemption --- ...ption-or-media-alternative-prerecorded.html | 9 ++++++--- .../20/audio-description-prerecorded.html | 18 ++++++++++++++---- 2 files changed, 20 insertions(+), 7 deletions(-) diff --git a/understanding/20/audio-description-or-media-alternative-prerecorded.html b/understanding/20/audio-description-or-media-alternative-prerecorded.html index aaa04b05ab..0c0e93ef18 100644 --- a/understanding/20/audio-description-or-media-alternative-prerecorded.html +++ b/understanding/20/audio-description-or-media-alternative-prerecorded.html @@ -20,9 +20,12 @@

Intent of Audio Description or Media Alternative (Prerecorded)

One approach is to provide audio description of the video content. The audio description augments the audio portion of the presentation with the information needed when the - video portion is not available. During existing pauses in dialogue, audio description - provides information about actions, characters, scene changes, and on-screen text - that are important and are not described or spoken in the main sound track. + video portion is not available. Audio description provides information about actions, + characters, scene changes, and on-screen text that are important and are not described + or spoken in the main sound track. Audio description is usually added during existing + pauses in dialogue. In rare cases where the original audio does not provide sufficient + pauses, it may be possible to create them by lowering the volume ("ducking") some of the + existing dialogue, if the need for audio description is deemed to be more important.

The second approach involves providing all of the information in the synchronized diff --git a/understanding/20/audio-description-prerecorded.html b/understanding/20/audio-description-prerecorded.html index 1b2547e9f3..eb709e78ef 100644 --- a/understanding/20/audio-description-prerecorded.html +++ b/understanding/20/audio-description-prerecorded.html @@ -16,12 +16,22 @@

Intent of Audio Description (Prerecorded)

The intent of this Success Criterion is to provide people who are blind or visually impaired access to the visual information in a synchronized media presentation. The audio description augments the audio portion of the presentation with the information - needed when the video portion is not available. During existing pauses in dialogue, - audio description provides information about actions, characters, scene changes, and - on-screen text that are important and are not described or spoken in the main sound - track. + needed when the video portion is not available. Audio description provides information about actions, + characters, scene changes, and on-screen text that are important and are not described + or spoken in the main sound track. Audio description is usually added during existing + pauses in dialogue. In rare cases where the original audio does not provide sufficient + pauses, it may be possible to create them by lowering the volume ("ducking") some of the + existing dialogue, if the need for audio description is deemed to be more important.

+
+

This success criterion applies even in cases where the original audio does not + have sufficient pauses, and where no portion of the original audio can be omitted in + favour of an audio description without losing important information. In these cases, + the content will fail this success criterion. +

+
+

From 0b9920b5c08ce4aba9046cc79fbca9da04ba1e98 Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Mon, 10 May 2021 21:54:21 +0100 Subject: [PATCH 02/12] Expand audio description note to mention lowering of bg music/sounds --- guidelines/terms/20/audio-description.html | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/guidelines/terms/20/audio-description.html b/guidelines/terms/20/audio-description.html index 3806c81a9b..9a80921c21 100644 --- a/guidelines/terms/20/audio-description.html +++ b/guidelines/terms/20/audio-description.html @@ -9,8 +9,8 @@ other visual content.

-

In standard audio description, narration is added during existing pauses in dialogue. - (See also extended audio description.) +

In standard audio description, narration is added during existing pauses in dialogue. Usually, this will also require + lowering the volume of background music and other non-informational sounds. (See also extended audio description.)

Where all of the video information is already provided in existing audio, no additional audio description is necessary. From 42999acd1f16820d888f73d79c4c7ecf606de0cb Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Wed, 28 Jun 2023 01:34:30 +0100 Subject: [PATCH 03/12] Change "will also" to "may" --- guidelines/terms/20/audio-description.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/guidelines/terms/20/audio-description.html b/guidelines/terms/20/audio-description.html index 9a80921c21..8af9692956 100644 --- a/guidelines/terms/20/audio-description.html +++ b/guidelines/terms/20/audio-description.html @@ -9,7 +9,7 @@ other visual content.

-

In standard audio description, narration is added during existing pauses in dialogue. Usually, this will also require +

In standard audio description, narration is added during existing pauses in dialogue. Usually, this may require lowering the volume of background music and other non-informational sounds. (See also extended audio description.)

From f91c84332419865e3d67a85d5d084398d17afd56 Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Tue, 30 Apr 2024 00:23:21 +0100 Subject: [PATCH 04/12] Update guidelines/terms/20/audio-description.html Co-authored-by: Mike Gower --- guidelines/terms/20/audio-description.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/guidelines/terms/20/audio-description.html b/guidelines/terms/20/audio-description.html index 8af9692956..f005aa4f54 100644 --- a/guidelines/terms/20/audio-description.html +++ b/guidelines/terms/20/audio-description.html @@ -9,7 +9,7 @@ other visual content.

-

In standard audio description, narration is added during existing pauses in dialogue. Usually, this may require +

In standard audio description, narration is added during existing pauses in dialogue. This may require lowering the volume of background music and other non-informational sounds. (See also extended audio description.)

From dbe5c72948891593766c958590581877a6a105d4 Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Mon, 10 Jun 2024 23:40:20 +0100 Subject: [PATCH 05/12] Revert change to AD definition --- guidelines/terms/20/audio-description.html | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/guidelines/terms/20/audio-description.html b/guidelines/terms/20/audio-description.html index f005aa4f54..3806c81a9b 100644 --- a/guidelines/terms/20/audio-description.html +++ b/guidelines/terms/20/audio-description.html @@ -9,8 +9,8 @@ other visual content.

-

In standard audio description, narration is added during existing pauses in dialogue. This may require - lowering the volume of background music and other non-informational sounds. (See also extended audio description.) +

In standard audio description, narration is added during existing pauses in dialogue. + (See also extended audio description.)

Where all of the video information is already provided in existing audio, no additional audio description is necessary. From 6fea6ac7e7b47773ffb897a187356ae137e816a5 Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Mon, 10 Jun 2024 23:43:28 +0100 Subject: [PATCH 06/12] Remove suggestion to "duck" less-important audio/dialogue --- .../audio-description-or-media-alternative-prerecorded.html | 6 ++---- understanding/20/audio-description-prerecorded.html | 6 ++---- 2 files changed, 4 insertions(+), 8 deletions(-) diff --git a/understanding/20/audio-description-or-media-alternative-prerecorded.html b/understanding/20/audio-description-or-media-alternative-prerecorded.html index 0c0e93ef18..b83729203d 100644 --- a/understanding/20/audio-description-or-media-alternative-prerecorded.html +++ b/understanding/20/audio-description-or-media-alternative-prerecorded.html @@ -22,10 +22,8 @@

Intent of Audio Description or Media Alternative (Prerecorded)

augments the audio portion of the presentation with the information needed when the video portion is not available. Audio description provides information about actions, characters, scene changes, and on-screen text that are important and are not described - or spoken in the main sound track. Audio description is usually added during existing - pauses in dialogue. In rare cases where the original audio does not provide sufficient - pauses, it may be possible to create them by lowering the volume ("ducking") some of the - existing dialogue, if the need for audio description is deemed to be more important. + or spoken in the main sound track. Audio description is added during existing + pauses in the dialogue.

The second approach involves providing all of the information in the synchronized diff --git a/understanding/20/audio-description-prerecorded.html b/understanding/20/audio-description-prerecorded.html index eb709e78ef..00bf505be3 100644 --- a/understanding/20/audio-description-prerecorded.html +++ b/understanding/20/audio-description-prerecorded.html @@ -18,10 +18,8 @@

Intent of Audio Description (Prerecorded)

audio description augments the audio portion of the presentation with the information needed when the video portion is not available. Audio description provides information about actions, characters, scene changes, and on-screen text that are important and are not described - or spoken in the main sound track. Audio description is usually added during existing - pauses in dialogue. In rare cases where the original audio does not provide sufficient - pauses, it may be possible to create them by lowering the volume ("ducking") some of the - existing dialogue, if the need for audio description is deemed to be more important. + or spoken in the main sound track. Audio description is added during existing + pauses in the dialogue.

From aef783b9ddbf79a966b023b008cff3952841ab13 Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Mon, 10 Jun 2024 23:48:42 +0100 Subject: [PATCH 07/12] Add new para about using media alternative when no gaps in dialog --- .../audio-description-or-media-alternative-prerecorded.html | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/understanding/20/audio-description-or-media-alternative-prerecorded.html b/understanding/20/audio-description-or-media-alternative-prerecorded.html index b83729203d..0acd4e1cd7 100644 --- a/understanding/20/audio-description-or-media-alternative-prerecorded.html +++ b/understanding/20/audio-description-or-media-alternative-prerecorded.html @@ -40,6 +40,10 @@

Intent of Audio Description or Media Alternative (Prerecorded)

more complete representation of the synchronized media content than audio description alone.

+ +

If the original audio does not have sufficient pauses in the dialogue, authors need to provide + an appropriate alternative instead. +

If there is any interaction as part of the synchronized media presentation (e.g., "press now to answer the question") then the alternative for time-based media would From 0a9a274be62f4a0744a03eefb95afe71daafab62 Mon Sep 17 00:00:00 2001 From: Mike Gower Date: Mon, 24 Jun 2024 12:25:11 -0700 Subject: [PATCH 08/12] Update understanding/20/audio-description-or-media-alternative-prerecorded.html the subject is "information" not "actions" or any of the other things mentioned, so the verb is singular, not plural --- .../20/audio-description-or-media-alternative-prerecorded.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/understanding/20/audio-description-or-media-alternative-prerecorded.html b/understanding/20/audio-description-or-media-alternative-prerecorded.html index 0acd4e1cd7..e5fe89f30b 100644 --- a/understanding/20/audio-description-or-media-alternative-prerecorded.html +++ b/understanding/20/audio-description-or-media-alternative-prerecorded.html @@ -21,7 +21,7 @@

Intent of Audio Description or Media Alternative (Prerecorded)

One approach is to provide audio description of the video content. The audio description augments the audio portion of the presentation with the information needed when the video portion is not available. Audio description provides information about actions, - characters, scene changes, and on-screen text that are important and are not described + characters, scene changes, and on-screen text that is important and not described or spoken in the main sound track. Audio description is added during existing pauses in the dialogue.

From c428203ec154ee5c83c190f1e294cc9cf53c6803 Mon Sep 17 00:00:00 2001 From: Mike Gower Date: Wed, 10 Jul 2024 14:19:45 -0700 Subject: [PATCH 09/12] Update understanding/20/audio-description-prerecorded.html simple syntax fix --- understanding/20/audio-description-prerecorded.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/understanding/20/audio-description-prerecorded.html b/understanding/20/audio-description-prerecorded.html index 00bf505be3..8d69e69a0d 100644 --- a/understanding/20/audio-description-prerecorded.html +++ b/understanding/20/audio-description-prerecorded.html @@ -23,7 +23,7 @@

Intent of Audio Description (Prerecorded)

-

This success criterion applies even in cases where the original audio does not +

This success criterion applies to all videos that contain "important visual details that cannot be understood from the main soundtrack alone". If the original audio have sufficient pauses, and where no portion of the original audio can be omitted in favour of an audio description without losing important information. In these cases, the content will fail this success criterion. From 8fed83f18545a7dc46b36336750efe970367aaa1 Mon Sep 17 00:00:00 2001 From: Mike Gower Date: Wed, 10 Jul 2024 14:20:26 -0700 Subject: [PATCH 10/12] Update understanding/20/audio-description-prerecorded.html Supported by TF, after discussion --- understanding/20/audio-description-prerecorded.html | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/understanding/20/audio-description-prerecorded.html b/understanding/20/audio-description-prerecorded.html index 8d69e69a0d..c9a771d04b 100644 --- a/understanding/20/audio-description-prerecorded.html +++ b/understanding/20/audio-description-prerecorded.html @@ -24,7 +24,8 @@

Intent of Audio Description (Prerecorded)

This success criterion applies to all videos that contain "important visual details that cannot be understood from the main soundtrack alone". If the original audio - have sufficient pauses, and where no portion of the original audio can be omitted in + offers no pauses in the dialog where audio descriptions can be provided, then the content fails this success criterion -- no audio descriptions have been provided. However, the information can still be made available to users through other time-based media requirements at A and AAA levels.

+

Where all pauses in the dialogue contain audio descriptions, yet additional important visual information has not been described, the video can provide that additional content through either extended audio descriptions or a combination of A and AA. As noted in the [Time-based media guideline](https://www.w3.org/WAI/WCAG22/Understanding/time-based-media), "Sometimes, there is so much dialogue that audio description cannot fit into existing pauses in the dialogue. The option at Level A to provide an alternative for time-based media instead of audio description for synchronized media would allow access to all of the information in the synchronized media. This option also allows access to the visual information in non-visual form when audio description is not provided for some other reason." favour of an audio description without losing important information. In these cases, the content will fail this success criterion.

From 3c1c453beab27094c5703408bf22c443ac34b627 Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Fri, 26 Jul 2024 14:16:06 +0100 Subject: [PATCH 11/12] Markup cleanup --- ...tion-or-media-alternative-prerecorded.html | 228 +++--------------- .../20/audio-description-prerecorded.html | 190 +++------------ 2 files changed, 65 insertions(+), 353 deletions(-) diff --git a/understanding/20/audio-description-or-media-alternative-prerecorded.html b/understanding/20/audio-description-or-media-alternative-prerecorded.html index 84702424b0..03bbe7d0b9 100644 --- a/understanding/20/audio-description-or-media-alternative-prerecorded.html +++ b/understanding/20/audio-description-or-media-alternative-prerecorded.html @@ -7,7 +7,7 @@

Understanding Audio Description or Media Alternative (Prerecorded)

- +

In brief

@@ -15,18 +15,14 @@

In brief

What to do
Provide a description of the visual content in videos.
Why it's important
People who are blind or who cannot understand the visual content can have it described.
-
- +

Intent of Audio Description or Media Alternative (Prerecorded)

- -

The intent of this Success Criterion is to provide people who are blind or visually impaired access to the visual information in a synchronized media presentation. This Success Criterion describes two approaches, either of which can be used.

-

One approach is to provide audio description of the video content. The audio description augments the audio portion of the presentation with the information needed when the video portion is not available. Audio description provides information about actions, @@ -34,7 +30,6 @@

Intent of Audio Description or Media Alternative (Prerecorded)

or spoken in the main sound track. Audio description is added during existing pauses in the dialogue.

-

The second approach involves providing all of the information in the synchronized media (both visual and auditory) in text form. An alternative for time-based media provides a running description of all that is going on in the synchronized media content. @@ -49,25 +44,18 @@

Intent of Audio Description or Media Alternative (Prerecorded)

more complete representation of the synchronized media content than audio description alone.

-

If the original audio does not have sufficient pauses in the dialogue, authors need to provide an appropriate alternative instead.

-

If there is any interaction as part of the synchronized media presentation (e.g., "press now to answer the question") then the alternative for time-based media would provide hyperlinks or whatever is needed to provide the same functionality.

-
-

For 1.2.3, 1.2.5, and 1.2.7, if all of the information in the video track is already - provided in the audio track, no audio description is necessary. - - + provided in the audio track, no audio description is necessary.

-

1.2.3, 1.2.5, and 1.2.8 overlap somewhat with each other. This is to give the author some choice at the minimum conformance level, and to provide additional requirements @@ -81,61 +69,40 @@

Intent of Audio Description or Media Alternative (Prerecorded)

however, by providing a text description, and the 1.2.5 requirement for an audio description was met, then 1.2.8 does not add new requirements.

-
-

See also 1.2.5 Audio Description (Prerecorded), 1.2.7 Extended Audio Description (Prerecorded) and 1.2.8 Media Alternative (Prerecorded).

- -
+

Benefits of Audio Description or Media Alternative (Prerecorded)

- - +
    -
  • This Success Criterion may help some people who have difficulty watching video or other synchronized media content, including people who have difficulty perceiving or understanding moving images.
    • -
-
- +

Examples of Audio Description or Media Alternative (Prerecorded)

A movie with audio description
-

- Describer: A title, "Teaching Evolution Case Studies. Bonnie Chen." A teacher shows photographs - of birds with long, thin beaks. -

- -

- Bonnie Chen: "These photos were all taken at the Everglades." -

- -

- Describer: The teacher hands each student two flat, thin wooden sticks. -

- -

- Bonnie Chen: "Today you will pretend to be a species of wading bird that has a beak like this." -

- -

- Describer: The teacher holds two of the sticks to her mouth making the shape of a beak. -

- +
+

Describer: A title, "Teaching Evolution Case Studies. Bonnie Chen." A teacher shows photographs of birds with long, thin beaks.

+

Bonnie Chen: "These photos were all taken at the Everglades."

+

Describer: The teacher hands each student two flat, thin wooden sticks.

+

Bonnie Chen: "Today you will pretend to be a species of wading bird that has a beak like this."

+

Describer: The teacher holds two of the sticks to her mouth making the shape of a beak.

+

Transcript of audio based on the first few minutes of "Teaching Evolution Case Studies, Bonnie Chen" (copyright WGBH and Clear Blue Sky Productions, Inc.)

-
+
An alternative for time-based media for a training video
A company purchases a Training video for use by its employees and puts it on the companies intranet. The video involves explaining use of a new technology and has a person talking @@ -144,189 +111,66 @@

Examples of Audio Description or Media Alternative (Prerecorded)

for time-based media that all employees, including those who cannot see the demonstrations, can use to better understand what is being presented.
-
- +

Resources for Audio Description or Media Alternative (Prerecorded)

- - -
- +

Techniques for Audio Description or Media Alternative (Prerecorded)

- -

Sufficient Techniques for Audio Description or Media Alternative (Prerecorded)

- - -
- +

Additional Techniques (Advisory) for Audio Description or Media Alternative (Prerecorded)

- -
    - -
  • - - - -
    • - +
-
- +

Failures for Audio Description or Media Alternative (Prerecorded)

- -
-
- diff --git a/understanding/20/audio-description-prerecorded.html b/understanding/20/audio-description-prerecorded.html index 7c1df46530..36ab67b579 100644 --- a/understanding/20/audio-description-prerecorded.html +++ b/understanding/20/audio-description-prerecorded.html @@ -7,7 +7,7 @@

Understanding Audio Description (Prerecorded)

- +

In brief

@@ -15,13 +15,10 @@

In brief

What to do
Provide a synchronized spoken description of the visual content in videos.
Why it's important
People who cannot see or understand the visual content can hear about it while playing videos.
-
- +

Intent of Audio Description (Prerecorded)

- -

The intent of this Success Criterion is to provide people who are blind or visually impaired access to the visual information in a synchronized media presentation. The audio description augments the audio portion of the presentation with the information @@ -30,7 +27,6 @@

Intent of Audio Description (Prerecorded)

or spoken in the main sound track. Audio description is added during existing pauses in the dialogue.

-

This success criterion applies to all videos that contain "important visual details that cannot be understood from the main soundtrack alone". If the original audio offers no pauses in the dialog where audio descriptions can be provided, then the content fails this success criterion -- no audio descriptions have been provided. However, the information can still be made available to users through other time-based media requirements at A and AAA levels.

@@ -41,14 +37,10 @@

Intent of Audio Description (Prerecorded)

-

For 1.2.3, 1.2.5, and 1.2.7, if all of the information in the video track is already provided in the audio track, no audio description is necessary. - -

-

1.2.3, 1.2.5, and 1.2.8 overlap somewhat with each other. This is to give the author some choice at the minimum conformance level, and to provide additional requirements @@ -62,206 +54,82 @@

Intent of Audio Description (Prerecorded)

however, by providing a text description, and the 1.2.5 requirement for an audio description was met, then 1.2.8 does not add new requirements.

-
- -

Benefits of Audio Description (Prerecorded)

- -
    -
  • People who are blind or have low vision as well as those with cognitive limitations who have difficulty interpreting visually what is happening benefit from audio description of visual information.
    • -
-
- +

Examples of Audio Description (Prerecorded)

-
A movie with audio description
-
-

- Describer: A title, "Teaching Evolution Case Studies. Bonnie Chen." A teacher shows photographs - of birds with long, thin beaks. -

- -

- - Bonnie Chen: "These photos were all taken at the Everglades." -

- -

- - Describer: The teacher hands each student two flat, thin wooden sticks. -

- -

- - Bonnie Chen: "Today you will pretend to be a species of wading bird that has a beak like this." -

- -

- - Describer: The teacher holds two of the sticks to her mouth making the shape of a beak. -

- +
+
+

Describer: A title, "Teaching Evolution Case Studies. Bonnie Chen." A teacher shows photographs of birds with long, thin beaks.

+

Bonnie Chen: "These photos were all taken at the Everglades."

+

Describer: The teacher hands each student two flat, thin wooden sticks.

+

Bonnie Chen: "Today you will pretend to be a species of wading bird that has a beak like this."

+

Describer: The teacher holds two of the sticks to her mouth making the shape of a beak.

+

Transcript of audio based on the first few minutes of "Teaching Evolution Case Studies, Bonnie Chen" (copyright WGBH and Clear Blue Sky Productions, Inc.)

-
- +

Resources for Audio Description (Prerecorded)

- - -
- +

Techniques for Audio Description (Prerecorded)

- -

Sufficient Techniques for Audio Description (Prerecorded)

- - -
- +

Additional Techniques (Advisory) for Audio Description (Prerecorded)

- -
    - -
  • - - - -
    • - +
-
- +

Failures for Audio Description (Prerecorded)

- -
-
- From 86adef732fbb10fdac4ff53225b283097f6d0434 Mon Sep 17 00:00:00 2001 From: "Patrick H. Lauke" Date: Fri, 26 Jul 2024 14:55:26 +0100 Subject: [PATCH 12/12] Further language tweaks --- ...-description-or-media-alternative-prerecorded.html | 2 +- understanding/20/audio-description-prerecorded.html | 11 ++++------- 2 files changed, 5 insertions(+), 8 deletions(-) diff --git a/understanding/20/audio-description-or-media-alternative-prerecorded.html b/understanding/20/audio-description-or-media-alternative-prerecorded.html index 03bbe7d0b9..20ec79ee90 100644 --- a/understanding/20/audio-description-or-media-alternative-prerecorded.html +++ b/understanding/20/audio-description-or-media-alternative-prerecorded.html @@ -45,7 +45,7 @@

Intent of Audio Description or Media Alternative (Prerecorded)

alone.

If the original audio does not have sufficient pauses in the dialogue, authors need to provide - an appropriate alternative instead. + an appropriate alternative instead in order to pass this criterion.

If there is any interaction as part of the synchronized media presentation (e.g., "press now to answer the question") then the alternative for time-based media would diff --git a/understanding/20/audio-description-prerecorded.html b/understanding/20/audio-description-prerecorded.html index 36ab67b579..3c97d2b727 100644 --- a/understanding/20/audio-description-prerecorded.html +++ b/understanding/20/audio-description-prerecorded.html @@ -28,18 +28,15 @@

Intent of Audio Description (Prerecorded)

pauses in the dialogue.

-

This success criterion applies to all videos that contain "important visual details that cannot be understood from the main soundtrack alone". If the original audio - offers no pauses in the dialog where audio descriptions can be provided, then the content fails this success criterion -- no audio descriptions have been provided. However, the information can still be made available to users through other time-based media requirements at A and AAA levels.

-

Where all pauses in the dialogue contain audio descriptions, yet additional important visual information has not been described, the video can provide that additional content through either extended audio descriptions or a combination of A and AA. As noted in the [Time-based media guideline](https://www.w3.org/WAI/WCAG22/Understanding/time-based-media), "Sometimes, there is so much dialogue that audio description cannot fit into existing pauses in the dialogue. The option at Level A to provide an alternative for time-based media instead of audio description for synchronized media would allow access to all of the information in the synchronized media. This option also allows access to the visual information in non-visual form when audio description is not provided for some other reason." - favour of an audio description without losing important information. In these cases, - the content will fail this success criterion. -

+

This Success Criterion applies to all video content that contains important visual details that cannot be understood from the main soundtrack alone. Content is not exempted if the original audio offers no pauses in the dialog where audio descriptions can be provided – it fails this Success Criterion. Similarly, where all pauses in the dialogue contain audio descriptions, yet additional important visual information has not been described, it fails this Success Criterion.

+

Despite failing this Success Criterion, authors are encouraged to then fall back to at least satisfying the requirements for Success Criterion 1.2.3 Audio Description or Media Alternative (Prerecorded). As noted in the [Time-based media guideline](https://www.w3.org/WAI/WCAG22/Understanding/time-based-media):

+
Sometimes, there is so much dialogue that audio description cannot fit into existing pauses in the dialogue. The option at Level A to provide an alternative for time-based media instead of audio description for synchronized media would allow access to all of the information in the synchronized media. This option also allows access to the visual information in non-visual form when audio description is not provided for some other reason.

For 1.2.3, 1.2.5, and 1.2.7, if all of the information in the video track is already - provided in the audio track, no audio description is necessary. + provided in the audio track, no audio description is necessary.

1.2.3, 1.2.5, and 1.2.8 overlap somewhat with each other. This is to give the author