Cabal Clippers Army

Module F / Reference / 10-20 min

WCAG 2.x and platform accessibility rules

Understand accessibility basics for captions, flashing content, transcript availability, and readability.

TL;DR

Use this lesson to understand accessibility basics for captions, flashing content, transcript availability, and readability. Treat it as practical guidance, not a rigid rulebook.

Why it matters

Captions make clips understandable without sound, searchable after publishing, and reviewable by editors before export. The goal is to help you make a stronger clip without taking away your creative freedom.

What you will learn

Understand the caption or transcript decision behind this workflow.
Produce a usable transcript, caption file, or burned-in caption pass for one clip.
Catch the caption mistakes that most often hurt readability, accuracy, or platform fit.

Prerequisites

  • An audio file, video file, URL, or exported clip
  • A target output format such as SRT, VTT, burned-in MP4, or transcript text

What you need

A clip, audio file, transcript, or source URL.
A caption/transcription tool that can edit text and timing.
The target platform and caption delivery method.
A phone-size preview before export.

Core concept

Caption work is part accuracy and part design. The workflow only works if viewers can read the result quickly on a phone.

Example

Scenario

Auto-captions are mostly correct, but the clip contains names, numbers, jargon, or fast speech.

Move

Apply the workflow to a short section first and proofread the result at phone size.

Result

The caption pass becomes readable and accurate enough that sound-off viewers can follow the clip.

How to do it

  1. 1Use accessibility rules as a baseline for readability, contrast, flashing content, and transcript availability.
  2. 2Keep caption contrast high and line length short enough for phone viewing.
  3. 3Avoid rapid flashing, intense strobing, or effects that could be uncomfortable or unsafe.
  4. 4Provide or preserve transcripts when the platform or workflow allows it.
  5. 5Check accessibility without making the clip feel sterile; the goal is clarity and safety.

Expected output

A caption or transcript artifact that is proofread, timed, readable on a phone, and matched to the target platform.

Practice task

Produce a clean caption pass

  1. 1Take a 20-30 second section of a real clip.
  2. 2Apply the caption or transcript workflow from this lesson.
  3. 3Proofread it with sound on, then watch it again with sound off at phone size.

Check your work

Names, numbers, jargon, acronyms, and claims are correct.
Caption lines are short, timed well, and readable on a phone.
The final export uses the caption method the target platform will actually show.

Common mistakes and fixes

Do not finish WCAG 2.x and platform accessibility rules without checking the exact words against the audio.
Do not let long caption blocks fill the screen on mobile.
Do not ignore names, numbers, acronyms, tickers, and niche terms.
Do not assume every platform will show sidecar caption files.
Do not export before checking caption placement at phone size.

Troubleshooting

If captions are too dense, split or rewrite into shorter one- or two-line blocks.
If caption timing drifts, fix timing after the final edit rather than before.
If platform captions and burned-in captions clash, choose one caption strategy for that upload.

Related resources

Caption QA checklistOpen resourceSRT/VTT/ASS format referenceOpen resourceCustom vocabulary templateOpen resource