Kilotest: Diagnoses of video audio track missing violation by HTML element 381 on Centre for Effective Altruism page

Basics

About the Centre for Effective Altruism page

• URL: https://www.effectivealtruism.org/
• Tested 38 days ago by job 6gw on 2026-04-24 at 21:54

About HTML element 381

• Tag name: VIDEO
• Text: [not applicable]
• Start tag: <video width="100%" height="100%" loop="" preload="metadata" src="https://videos.ctfassets.net/ohf186sfn6di/5t5d6LTL87gU4glUVcStbl/66aad8af287dd54ea5a40141e95ff52b/moving_portrait_arden.mp4" class="css-1t5je8n-StoryCardImage-previewVideo">
• XPath: [not obtained]
• Bounding box: x = 380, y = 2111, width = 320, height = 488

About the video audio track missing issue

• Why it matters: User cannot get help hearing video content as speech
• Priority: highest
• Related WCAG standard: 1.2.1

Diagnoses

Here is how tools diagnose the video audio track missing issue for HTML element 381 of the Centre for Effective Altruism page.

1. [warning] Can't collect data from the test target.

   Tool: QualWeb (University of Lisbon)

   Rule: QW-ACT-R54