{"id":"1.2.1","name":"Audio-only and Video-only (Prerecorded)","level":"A","principle":"Perceivable","operational_summary":"IF recorded media contains only audio, provide equivalent time-based information in text; IF it contains only video, provide an equivalent text alternative or audio track. Check the clearly identified alternative-to-text exception.","normative_source":"https://www.w3.org/TR/WCAG22/#audio-only-and-video-only-prerecorded","understanding_source":"https://www.w3.org/WAI/WCAG22/Understanding/audio-only-and-video-only-prerecorded.html","applicability_status":"NOT_EVALUATED","assessment_status":"NOT_TESTED","owner":null,"test_instance_ids":[],"exception_evidence_ids":[],"related_rules":[]}