Initial commit

2025-12-22 00:21:10 -05:00
commit 2bd947dfe5
91 changed files with 3819 additions and 0 deletions
@@ -0,0 +1,40 @@
+[Back to 1 Perceivable index](index.md)
+
+# 1.2.2 Captions (Prerecorded)
+
+- Level: A
+- Guideline: 1.2 Time-based Media
+- Principle: 1 Perceivable
+
+## What it is
+
+Captions are provided for all prerecorded audio content in synchronized media, except when the media is a media alternative for text and is clearly labeled as such.
+
+## How to test
+
+- Check: Captions are provided for all prerecorded audio content in synchronized media, except when the media is a media alternative for text and is clearly labeled as such.
+- Use the sufficient techniques below as acceptable methods when applicable.
+- Confirm none of the common failures apply.
+
+## Sufficient techniques (W3C)
+
+- G93: Providing open (always visible) captions
+- G87: Providing closed captions
+- SM11: Providing captions through synchronized text streams in SMIL 1.0
+- SM12: Providing captions through synchronized text streams in SMIL 2.0
+- H95: Using the track element to provide captions
+- Using any readily available media format that has a video player that supports closed captioning
+
+## Common failures (W3C)
+
+- F8: Failure of Success Criterion 1.2.2 due to captions omitting some dialogue or important sound effects
+- F75: Failure of Success Criterion 1.2.2 by providing synchronized media without captions when the synchronized media presents more information than is presented on the page
+- F74: Failure of Success Criterion 1.2.2 and 1.2.8 due to not labeling a synchronized media alternative to text as an alternative
+
+## Resources
+
+- WCAG 2.2 SC: https://www.w3.org/TR/WCAG22/#captions-prerecorded
+- Understanding: https://www.w3.org/WAI/WCAG22/Understanding/captions-prerecorded.html
+- Quick reference: https://www.w3.org/WAI/WCAG22/quickref/?versions=2.2#captions-prerecorded
+
+[Back to 1 Perceivable index](index.md)