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From: Steve Green
Date: Wed, Aug 11 2021 1:02AM
Subject: Colour contrast of text in video content
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As far as I can tell, no WCAG success criteria require text in videos to have sufficient colour contrast. Am I missing something?

I am currently testing some videos that contain important text content that is not presented anywhere else. The colour contrast would fail SC 1.4.3, but it does not appear to apply. It seems that the only requirement is that the text is presented in the audio track or an audio description, but that really doesn't feel adequate.

Assuming I am not missing anything, does anyone know why text in video content was not included in SC 1.4.3? Any other thoughts on the matter?

Regards,
Steve Green
Managing Director
Test Partners Ltd
020 3002 4176 (direct)
0800 612 2780 (switchboard)
07957 246 276 (mobile)
020 7692 5517 (fax)
Skype: testpartners
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Connect to me on LinkedIn - http://uk.linkedin.com/in/stevegreen2

From: Morten Tollefsen
Date: Wed, Aug 11 2021 1:39AM
Subject: Re: Colour contrast of text in video content
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Hi.

I had the problem as presented some months ago: a Norwegian museum produced about 50 videos with a lot of text contents. Their goal was to make the videos as good as possible for as many as possible regardless of WCAG, and we therefore tried to meet 1.4.3 (even if this was sometimes tricky because of, at least for these videos, the element of art). Sorry, this does not answer your question, but even if wcag do not have a 100% clear success criteria for this, it is obviously important with sufficient contrast also in videos.

Morten

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Sendt: onsdag 11. august 2021 09:02
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Emne: [WebAIM] Colour contrast of text in video content

As far as I can tell, no WCAG success criteria require text in videos to have sufficient colour contrast. Am I missing something?

I am currently testing some videos that contain important text content that is not presented anywhere else. The colour contrast would fail SC 1.4.3, but it does not appear to apply. It seems that the only requirement is that the text is presented in the audio track or an audio description, but that really doesn't feel adequate.

Assuming I am not missing anything, does anyone know why text in video content was not included in SC 1.4.3? Any other thoughts on the matter?

Regards,
Steve Green
Managing Director
Test Partners Ltd
020 3002 4176 (direct)
0800 612 2780 (switchboard)
07957 246 276 (mobile)
020 7692 5517 (fax)
Skype: testpartners
= EMAIL ADDRESS REMOVED =
www.testpartners.co.uk
 
Connect to me on LinkedIn - http://uk.linkedin.com/in/stevegreen2

From: Detlev Fischer
Date: Wed, Aug 11 2021 3:27AM
Subject: Re: Colour contrast of text in video content
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Since 1.4.3 does not specify *where* that text would sit (and also
applies to text as graphic) I cannot see why it should not apply to text
in video (both to captioning and text as graphic used as part of the
image).
Detlev

Am 11.08.2021 um 09:02 schrieb Steve Green:
> As far as I can tell, no WCAG success criteria require text in videos to have sufficient colour contrast. Am I missing something?
>
> I am currently testing some videos that contain important text content that is not presented anywhere else. The colour contrast would fail SC 1.4.3, but it does not appear to apply. It seems that the only requirement is that the text is presented in the audio track or an audio description, but that really doesn't feel adequate.
>
> Assuming I am not missing anything, does anyone know why text in video content was not included in SC 1.4.3? Any other thoughts on the matter?
>
> Regards,
> Steve Green
> Managing Director
> Test Partners Ltd
> 020 3002 4176 (direct)
> 0800 612 2780 (switchboard)
> 07957 246 276 (mobile)
> 020 7692 5517 (fax)
> Skype: testpartners
> = EMAIL ADDRESS REMOVED =
> www.testpartners.co.uk
>
> Connect to me on LinkedIn - http://uk.linkedin.com/in/stevegreen2
>
> > > > --
Detlev Fischer
DIAS GmbH
(Testkreis is now part of DIAS GmbH)

Mobil +49 (0)157 57 57 57 45

http://www.dias.de
Beratung, Tests und Schulungen für barrierefreie Websites

From: Patrick H. Lauke
Date: Wed, Aug 11 2021 3:48AM
Subject: Re: Colour contrast of text in video content
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On 11/08/2021 10:27, Detlev Fischer wrote:
> Since 1.4.3 does not specify *where* that text would sit (and also
> applies to text as graphic) I cannot see why it should not apply to text
> in video (both to captioning and text as graphic used as part of the
> image).

Agree, this has been our take on 1.4.3 as well. Text in video, text in
images/SVGs, etc all fall under 1.4.3.

P
--
Patrick H. Lauke

https://www.splintered.co.uk/ | https://github.com/patrickhlauke
https://flickr.com/photos/redux/ | https://www.deviantart.com/redux
twitter: @patrick_h_lauke | skype: patrick_h_lauke

From: Steve Green
Date: Wed, Aug 11 2021 4:54AM
Subject: Re: Colour contrast of text in video content
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I have done some further investigation and I have found the answer. The normative text of SC 1.4.3 refers to "The visual presentation of text and images of text..."

WCAG's definition of "image of text" is "text that has been rendered in a non-text form (e.g., an image)...", which would include video content.

It doesn't help that the Understanding page informally describes an image of text as "text that has been rendered into pixels and then stored in an image format", which would not include video content, since it is not an image format. That paragraph should have just pointed to the formal definition instead of paraphrasing it inaccurately.

Thanks to all who replied to my question - it looks like I was wrong (again).

Steve

From: Tom Livingston
Date: Wed, Aug 11 2021 6:10AM
Subject: Re: Colour contrast of text in video content
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On Wed, Aug 11, 2021 at 3:02 AM Steve Green
< = EMAIL ADDRESS REMOVED = > wrote:
>
> As far as I can tell, no WCAG success criteria require text in videos to have sufficient colour contrast. Am I missing something?
>
> I am currently testing some videos that contain important text content that is not presented anywhere else. The colour contrast would fail SC 1.4.3, but it does not appear to apply. It seems that the only requirement is that the text is presented in the audio track or an audio description, but that really doesn't feel adequate.
>
> Assuming I am not missing anything, does anyone know why text in video content was not included in SC 1.4.3? Any other thoughts on the matter?
>

Would this be handled with transcripts if the video could not be made compliant?


--

Tom Livingston | Senior Front End Developer | Media Logic |
ph: 518.456.3015x231 | fx: 518.456.4279 | medialogic.com


#663399

From: Steve Green
Date: Wed, Aug 11 2021 6:17AM
Subject: Re: Colour contrast of text in video content
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That is exactly what I recommended to a client this morning. The transcript might need to include some of the visual content that it wouldn't usually contain, so the authoring process might be different than usual. Nevertheless, I would say that it is an acceptable alternative format as long as the transcript and the mechanism to access it are accessible.

Steve

From: Patrick H. Lauke
Date: Wed, Aug 11 2021 7:58AM
Subject: Re: Colour contrast of text in video content
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On 11/08/2021 13:17, Steve Green wrote:
> The transcript might need to include some of the visual content that it wouldn't usually contain

Shouldn't a transcript already include a description/text version of any
important visuals already, rather than just being a transcript purely of
any dialogue/audio? (though it looks like WCAG is a bit vague on the
terminology here)

P
--
Patrick H. Lauke

https://www.splintered.co.uk/ | https://github.com/patrickhlauke
https://flickr.com/photos/redux/ | https://www.deviantart.com/redux
twitter: @patrick_h_lauke | skype: patrick_h_lauke

From: Steve Green
Date: Wed, Aug 11 2021 8:38AM
Subject: Re: Colour contrast of text in video content
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Sorry, I miswrote what I was thinking. You are right that the transcripts for both purposes must contain all the important visual information. However, I believe there can legitimately be other differences.

Assuming we are talking about synchronised media, a transcript only gets you to level A conformance (SC 1.2.3). If you want to achieve AA, you must have an audio description (except in the case of a single talking head). Therefore, the transcript does not need to meet the requirements of SC 1.2.3 because the audio description already does that.

The transcript only needs to meet SC 1.1.1 because it is only acting as a text alternative for an image of text. As such, it doesn't need to contain any of the audio content.

Unless I'm wrong again.

Steve