Tweak understanding for 1.2.3 and 1.2.5 #1790
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Understanding Audio Description or Media Alternative (Prerecorded) |
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In brief |
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Intent of Audio Description or Media Alternative (Prerecorded) |
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The intent of this Success Criterion is to provide people who are blind or visually |
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| impaired access to the visual information in a synchronized media presentation. This | ||
| Success Criterion describes two approaches, either of which can be used. | ||
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One approach is to provide audio description of the video content. The audio description |
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| 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 is important and not described | ||
| or spoken in the main sound track. Audio description is added during existing | ||
| pauses in the dialogue. | ||
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The second approach involves providing all of the information in the synchronized |
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| 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. | ||
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@@ -49,25 +44,18 @@ Intent of Audio Description or Media Alternative (Prerecorded) |
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| more complete representation of the synchronized media content than audio description | ||
| alone. | ||
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If the original audio does not have sufficient pauses in the dialogue, authors need to provide |
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There was a problem hiding this comment. I am (still) strongly of the opinion that this paragraph (lines 47-49) goes beyond the SC. There was a problem hiding this comment. and that's probably where we fundamentally disagree. if there's no pauses, how can the video claim to pass the SC that requires audio description (or be not applicable)? There was a problem hiding this comment. i still maintain that if a video with both dialog and important visual information has no gaps in the dialog to even add some form of AD, and the existing dialog does not mention/explain the visual information already (i.e. if somebody can't see the visual part of the video, they will simply NOT get that information), it must use some alternative at least to convey that visual information. happy to say that on paper (based on the definition of what AD is, and that it's extra description that is added in gaps) the video itself may nominally "pass" 1.2.3 if there are no gaps, but the end result would still otherwise be that a blind/low vision user will simply not get an equivalent for that visual information. alternatively, would that then be a failure of 1.1.1 instead? basically, i'm willing to concede that 1.2.3 could "pass" (on paper), but there must be some other way then to fail the fact that there's visual information that is not conveyed. There was a problem hiding this comment. also, keeping in mind that these lines here are in the "AD or media alternative" SC. I don't think it's "beyond the SC" to say that if you can't do AD here, you then have to go the media alternative route? There was a problem hiding this comment. I think Patrick's point is valid here; the existing wording in the 1.2 Guideline text already hints at 1.2.3 having a role to backfill missing important visual information that cannot be fit in the synchronized media. The other thought I have is that all this focus re-confirms something I think we knew: the 1.2 SCs are not really cumulative in the sense of most of SCs, where one achieves A, and then does a bit more and achieves AA, etc. Here, its a messy whole, and achieving any one SC is not necessarily a baseline for higher level SCs. There was a problem hiding this comment.
We have this sort of subjectivity in other places as well, even all the way back to 1.1.1 and what kind of text alternative would provide "equivalent purpose". EDIT: ah, i seem to have made that point elsewhere here already There was a problem hiding this comment. wondering if adding a note that acknowledges the subjectivity here might be helpful? we can't guarantee that authors/auditors will 100% agree, but at least we can foreshadow that there is sometimes a difference of opinion, but that generally AD tries to be succinct |
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| an appropriate alternative instead. | ||
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If there is any interaction as part of the synchronized media presentation (e.g., |
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| "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. | ||
| 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 | ||
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@@ -81,61 +69,40 @@ Intent of Audio Description or Media Alternative (Prerecorded) |
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| 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. | ||
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See also |
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| 1.2.5 Audio Description (Prerecorded), | ||
| 1.2.7 Extended Audio Description (Prerecorded) and | ||
| 1.2.8 Media Alternative (Prerecorded). | ||
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Benefits of Audio Description or Media Alternative (Prerecorded) |
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| other synchronized media content, including people who have difficulty perceiving | ||
| or understanding moving images. | ||
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Examples of Audio Description or Media Alternative (Prerecorded) |
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Describer: A title, "Teaching Evolution Case Studies. Bonnie Chen." A teacher shows photographs of birds with long, thin beaks. |
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Bonnie Chen: "These photos were all taken at the Everglades." |
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Describer: The teacher hands each student two flat, thin wooden sticks. |
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Bonnie Chen: "Today you will pretend to be a species of wading bird that has a beak like this." |
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Describer: The teacher holds two of the sticks to her mouth making the shape of a beak. |
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Transcript of audio based on the first few minutes of "Teaching Evolution Case Studies, Bonnie Chen" (copyright WGBH and Clear Blue Sky Productions, Inc.) |
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| intranet. The video involves explaining use of a new technology and has a person talking | ||
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| for time-based media that all employees, including those who cannot see the demonstrations, | ||
| can use to better understand what is being presented. | ||
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Resources for Audio Description or Media Alternative (Prerecorded) |
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Techniques for Audio Description or Media Alternative (Prerecorded) |
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Sufficient Techniques for Audio Description or Media Alternative (Prerecorded) |
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Providing an alternative for time-based media including any interaction using one of the following techniques |
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Linking to the alternative for time-based media using one of the following techniques |
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Providing a version of a movie with audio descriptions using one of the following: |
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Providing a movie with extended audio descriptions using one of the following: |
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Additional Techniques (Advisory) for Audio Description or Media Alternative (Prerecorded) |
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Failures for Audio Description or Media Alternative (Prerecorded) |
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I feel like even this inversion of the existing information is something we should be cautious about.
In the existing text, the starting point is "During existing pauses in dialog...". It emphasizes that someone attempting to provide context for missing important visual information has to assess what openings/opportunities are available. This reflects the reality of how audio descriptions tend to be done, in my experience. The location and duration of pauses in the dialog is the constraint under which AA level remediation (which tackles what can be done in synchronized video) takes place.
There is a slightly different feel when we invert the paragraph, IMO.