- From: Mitchell Evan <mtchllvn@gmail.com>
- Date: Wed, 18 May 2022 14:40:15 +0200
- To: Steve Green <steve.green@testpartners.co.uk>
- Cc: John Foliot <john@foliot.ca>, Greg Jellin <greg@gregjellin.com>, Shawn Henry <shawn@w3.org>, Wai-Ig <w3c-wai-ig@w3.org>
- Message-ID: <CAK=xW6th_iFGeZD-HVUKgY=4T5S-vaa7Gp6PsTtfNrw1ieNgGg@mail.gmail.com>
Thank you Greg for filing Ambiguous language defining Audio Description in Understanding 1.2.5 (WCAG issue #2441) <https://github.com/w3c/wcag/issues/2441>, to clarify that a single audio track can satisfy 1.2.3 and 1.2.5. I've added a comment there, further clarifying that the single audio track can either contain traditional interleaved audio description, or "integrated description" as Shawn mentioned. > Peter Shikli wrote “level AA rating requires only that you fit the audio description in the pauses between dialog”, but when I raised this exact same issue in the WebAIM forum last year, the consensus was the opposite. Great point! I would love to see this one resolved... How to add audio descriptions to video? (WCAG issue #1768) <https://github.com/w3c/wcag/issues/1768> Cheers, Mitchell Evan, CPWA linkedin.com/in/mitchellrevan <https://www.linkedin.com/in/mitchellrevan> Twitter @mitchellrevan <https://twitter.com/mitchellrevan> +49 1525 8950540 +1 510 375 6104 On Wed, 18 May 2022 at 03:06, Steve Green <steve.green@testpartners.co.uk> wrote: > Although https://www.w3.org/WAI/media/av/description/ contains lots of > good stuff, it is still ambiguous because the “Description method” section > does not state which of the steps conform with level AA and which conform > with level AAA. > > > > Peter Shikli wrote “level AA rating requires only that you fit the audio > description in the pauses between dialog”, but when I raised this exact > same issue in the WebAIM forum last year, the consensus was the opposite. > See https://webaim.org/discussion/mail_thread?thread=10114 > > > > To me, and most in the WebAIM discussion, it seems unlikely that the > authors of the success criterion would mandate audio description at level > AA, but then say you don’t need to bother if there are insufficient gaps in > the audio track. > > > > If that is indeed correct, you could start with a video that has > sufficient gaps in the audio track, and achieve level AA conformance by > cutting out the gaps rather than by adding audio description. It would be > perverse of WCAG to incentivise such behaviour. > > > > Steve Green > > Managing Director > > Test Partners Ltd > > > > > > *From:* John Foliot <john@foliot.ca> > *Sent:* 18 May 2022 01:44 > *To:* Greg Jellin <greg@gregjellin.com> > *Cc:* Shawn Henry <shawn@w3.org>; Wai-Ig <w3c-wai-ig@w3.org> > *Subject:* Re: Seeking clarity regarding the terminology in Success > Criterion 1.2.5 Audio Description > > > > As a corollary to this discussion, you may also find the MAUR (Media > Accessibility User Requirements) an interesting read: > > https://www.w3.org/TR/media-accessibility-reqs/ > > > > Although non-normative in stature, it looks at media accessibilty through > a Best Practices lens, but is quite extensive. > > > > JF > > > > On Tue., May 17, 2022, 7:18 p.m. Greg Jellin, <greg@gregjellin.com> wrote: > > Fantastic resources, Shawn. Thanks. > > On 5/17/2022 4:11 PM, Shawn Henry wrote: > > Hi, Greg, > > > > In many cases "integrated description" included in the main video is > > the best solution. I hope that you find useful information for your > > situation in the W3C WAI resource "Making Audio and Video Media > > Accessible", particularly: > > * https://www.w3.org/WAI/media/av/description/ > > * https://www.w3.org/WAI/media/av/av-content/#integrate-description > > > > Hopefully that resource also clears up misunderstandings in this > > e-mail thread about WCAG requirements at Level A, AA, AAA and meeting > > people's accessibility needs and preferences. > > > > --- > > > > Indeed the WCAG information could be made more clear, and better cover > > current technology and options. I encourage you to submit suggestions > > to improve the wording in the Understanding document. (We can't change > > the wording in WCAG itself.) It's best if you can submit a GitHub Pull > > Request. Alternatively, you can use a form or send e-mail. > > Instructions are here: > > https://www.w3.org/WAI/standards-guidelines/wcag/commenting/ > > > > If you have suggestions for the "Making Audio and Video Media > > Accessible" resource, you can use the e-mail or GitHub links near the > > end of the page in the 'Help improve this page' box. > > > > Best, > > ~Shawn > > <http://www.w3.org/People/Shawn/> > > > > > > On 17-May-22 4:46 PM, Greg Jellin wrote: > >> Peter, > >> > >> I hear what you are saying, that using only existing pauses may > >> provide an excuse to provide limited AD, if interpreted that way. > >> > >> But my main concern is whether the SC requires the AD, no matter how > >> brief, to be included in the integrated (main) soundtrack or is it > >> required to be a separate sound track. I know the answer to this (at > >> least I think I do), but the language used in both the SC and the > >> Understanding regarding the term Audio Description is ambiguous. > >> > >> This ambiguity creates a lot of confusion amongst A11y folks as well > >> as our clients. I am currently defending a VPAT in which a potential > >> client is making the claim that because a separate AD track is not > >> provided that we are failing 1.2.5. > >> > >> Greg > >> > >> > >> On 5/17/2022 2:08 PM, Peter Shikli wrote: > >>> Greg, > >>> > >>> Indeed there is lots of confusion regarding that. The simplest way > >>> to understand it is that WCAG 2.1 to a level AA rating requires only > >>> that you fit the audio description in the pauses between dialog, > >>> whereas a level AAA satisfies the requirement with a separate MP3 > >>> audio file that accompanies the video. This latter is called an > >>> extended audio description. We are big fans of producing such > >>> extended audio descriptions compared to the minimalist version to > >>> comply at the AA level. > >>> > >>> Among other things, many videos do not provide a time slice between > >>> the dialog to adequately describe the scene. The level AA rating > >>> says it's OK to shortchange the blind in this regard. It's also much > >>> harder to embed such a AA audio description as a track on the few > >>> video players that support it. I can think of more reasons, but this > >>> is why we have produced a fully functional sound studio as part of > >>> our accessibility services with trained voiceover artists. > >>> > >>> Extended audio descriptions are the right way to meet the needs of > >>> the blind. > >>> > >>> Cheers, > >>> Peter Shikli > >>> Access2online Inc. > >>> 29030 SW Town Center Loop East > >>> Suite 202-187 > >>> Wilsonville, OR 97070 > >>> 503-570-6831 - pshikli@access2online.com > >>> Cell: 949-677-3705 > >>> FAX: 503-582-8337 > >>> www.access2online.com <http://www.access2online.com> > >>> Prison inmates helping the internet become accessible > >>> > >>> On Tue, May 17, 2022 at 1:35 PM Greg Jellin <greg@gregjellin.com> > >>> wrote: > >>> > >>> Warning, it is a bit challenging to describe my concern so this > >>> is a bit verbose. > >>> > >>> Success Criterion 1.2.5 Audio Description (Prerecorded) states, > >>> "Audio description is provided for all prerecorded video content in > >>> synchronized media." > >>> > >>> In the normative part of the SC there are no exceptions, thus my > >>> interpretation is that an Audio Description is always required for > >>> synchronized media. Where it gets tricky for me is the definition of > >>> Audio Description. > >>> > >>> When reading the Understanding (non-normative) doc for 1.2.5 the > >>> term Audio Description appears to me to be ambiguously defined. I > >>> would argue that the term is being used in some parts of the > >>> document to mean a separate audio track that augments the integrated > >>> (main) audio of the synchronized media to describe visual details, > >>> but in other parts to mean a description of visual details that may > >>> be in the integrated audio OR a separate audio track. > >>> > >>> So which is is it? Is Audio Description defined describing in > >>> audio the visual content as separate track? Or, is Audio Description > >>> defined as describing in audio the visual content within the > >>> integrated (main) audio OR as a separate track. > >>> > >>> This is important, because if WCAG defines Audio Description as > >>> always being a separate track, then the SC (normative) requires a > >>> separate track for all synchronized media. > >>> > >>> Some examples of ambiguous language: > >>> > >>> /In the Understanding doc (Note section below "Intent") the > >>> following is stated, "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."/ > >>> > >>> My interpretation of that language is that audio description is > >>> a separate track, but is only necessary if the main audio track does > >>> not sufficiently describe the visual content. The problem is that > >>> this directly conflicts with the SC, "Audio description is provided > >>> for ALL..." > >>> > >>> /In the Key Terms section audio description is defined as > >>> "//narration added to the soundtrack to describe important visual > >>> details that cannot be understood from the main soundtrack alone". > >>> / > >>> > >>> Again, this implies that there is a 2nd (separate) soundtrack. > >>> > >>> My sense is that the term Audio Description is being used to > >>> have two different meanings (ambiguous). In the SC statement it > >>> means that the visual content must be described (either in the > >>> integrated audio or a separate audio track) and in the Understanding > >>> doc it means explicitly a separate audio track. > >>> > >>> Thoughts? > >>> > >>> Greg > >>> > >
Received on Wednesday, 18 May 2022 12:40:39 UTC