{"observation":{"id":"17424a8a-97f1-40e8-9763-913b0eaf9af8","tool":"dubverse","tool_name":"Dubverse","criterion":"lip-sync-accuracy","criterion_name":"Lip Sync Accuracy","criterion_definition":"Does the dubbed audio visually match lip movements in the original video?","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"If the dubbed audio does not match the on-screen mouth movements, the core purpose of video translation with lip sync has failed. (3 of 3 judges)","scenario":null,"scenario_name":null,"group_tag":null,"scenario_description":null,"modality":null,"input_text":null,"input_artifact_refs":[],"stresses":[],"verdict":"mixed","score":null,"score_total":null,"note":"Lip sync is good for slow to medium speech, but fast instruction segments show a slight delay and fast speech parts show a noticeable audio-video mismatch.","evidence_state":"observed","source":"aggregate-synthesis","artifacts":[],"run_id":"9feca581-b454-4bda-a610-a646cd0092f0","study_title":"Translate Videos with Voice Cloning and Lip Sync Using AI","study_kind":"backfill","research_task":"86b96dfpf","tested_at":"2026-06-24T05:45:24.018000+00:00","completeness":"no-artifact","input":{"state":"cross-scenario","text":null,"files":[],"modality":null,"stresses":[]},"tool_page_slug":"dubverse","tool_url":"https://aidemos.com/tools/dubverse","permalink":"https://aidemos.com/evidence/17424a8a-97f1-40e8-9763-913b0eaf9af8","api_url":"https://ai.aidemos.com/v1/observations/17424a8a-97f1-40e8-9763-913b0eaf9af8"},"peers":[],"other_criteria":[],"appears_in":[{"page_type":"ranking","slug":"ai-video-dubbing-tools","title":"Best AI Tools to Translate Videos with Voice Cloning and Lip Sync","url":"https://aidemos.com/best/ai-video-dubbing-tools","binding":"run"}],"same_scenario":[]}