[confirm edits published] Incorrect advice for video-only and transcripts

[patrickhlauke]

On https://www.w3.org/WAI/media/av/transcripts/#checklist the guide currently states:

Video-only (no audio content): For pre-recorded and live: Transcripts are not needed because there is no audio information.

This seems incorrect, or at least misleading. Yes, lacking any audio, there's no need for an audio transcript. However, a media alternative that described the visual aspect is still needed (roughly what the guide here alludes to earlier with "Descriptive transcript", but without any audio transcription).

Per 1.2.1 Audio-only and Video-only (Prerecorded) https://www.w3.org/TR/WCAG21/#audio-only-and-video-only-prerecorded

Prerecorded Video-only Either an alternative for time-based media or an audio track is provided that presents equivalent information for prerecorded video-only content.

https://www.w3.org/TR/WCAG21/#dfn-alternative-for-time-based-media

alternative for time-based media document including correctly sequenced text descriptions of time-based visual and auditory information and providing a means for achieving the outcomes of any time-based interaction

While it seems the guide here is trying to primarily address audio transcripts, it would at least be good to mention/cross-reference the fact that video-only content will also still need a media alternative.

[shawna-slh]

Agree!

I made a quick fix for now. https://github.com/w3c/wai-media-guide/pull/128/files

I'm leaving this issue open since that edit needs WG review, and I want to think more about if we want to tweak it here, and/or edit related info elsewhere.

(p.s. sooo sorry that we missed this GitHub issue earlier)

Thanks, Patrick!

[shawna-slh]

This has needs AG WG review. (was previously listed in EOWG review) Can be reviewed here:

• Diff of markup
• In resource: In Transcripts, under Does My Media Need a Transcript?, Video-only (no audio content): -- all 4 bullets in that section.

I encourage anyone to review it and put a +1 in this issue or otherwise indicate their review comments. Thanks!

[shawna-slh]

reviewed by AG WG