{"observation":{"id":"d3a9a3e0-42e1-4677-9f8c-fe0abcd1bdc5","tool":"sync-labs","tool_name":"Sync Labs","criterion":"voice-cloning-quality","criterion_name":"Voice Cloning Quality","criterion_definition":"Does the dubbed voice sound natural, and does it match the original speaker's energy, tone, and style?","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"Natural-sounding voice matching is central to successful voice cloning, which is a core part of this ranking. (3 of 3 judges)","scenario":"educational-airport-conversation-short-english-spanish","scenario_name":"Educational airport conversation short (English → Spanish)","group_tag":"video-translation-voice-clone-lip-sync","scenario_description":"A structured educational/conversation-style English short video used to test translation into Spanish with clear narration, steadier pacing, and easier lip-sync alignment than the other scenarios.","modality":"video","input_text":null,"input_artifact_refs":[{"alt":null,"url":null,"role":null,"filename":"Airport English Conversation #english #learnenglish.publer.com.mp4"}],"stresses":["Structured speech translation accuracy","English-to-Spanish narration quality","Longer-phrase lip-sync consistency","Clear voice rendering for informational content","Export/download reliability in a simple speaking scenario"],"verdict":"mixed","score":null,"score_total":null,"note":"The voice is understandable but slightly robotic, so the tool does not strongly clone the original speaker's natural tone.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://cdn.futuresmart.ai/public/aidemos/2e19d15a954b426fba4f1126d3c78c89.mp4?v=1","role":"output","alt":null}],"run_id":"ec1dd100-6af8-4f49-8f19-b78492702b14","study_title":"Translate Videos with Voice Cloning and Lip Sync Using AI","study_kind":"generation","research_task":"86b96dfpf","tested_at":null,"completeness":"output-only","input":{"state":"not-captured","text":null,"files":[],"modality":"video","stresses":["Structured speech translation accuracy","English-to-Spanish narration quality","Longer-phrase lip-sync consistency","Clear voice rendering for informational content","Export/download reliability in a simple speaking scenario"]},"tool_page_slug":"sync-labs","tool_url":"https://aidemos.com/tools/sync-labs","permalink":"https://aidemos.com/evidence/d3a9a3e0-42e1-4677-9f8c-fe0abcd1bdc5","api_url":"https://ai.aidemos.com/v1/observations/d3a9a3e0-42e1-4677-9f8c-fe0abcd1bdc5"},"peers":[{"id":"736fc6eb-a049-4c15-9ad8-01985e12f148","tool":"d-id","tool_name":"D-ID","verdict":"worked","score":null,"score_total":null,"note":"It outputs a clear, professional-sounding Spanish voice.","artifact_count":0,"thumbnail":null,"evidence_url":"https://aidemos.com/evidence/736fc6eb-a049-4c15-9ad8-01985e12f148"},{"id":"c7b05430-3e47-41d3-94ed-4abce5fc99ff","tool":"dubverse","tool_name":"Dubverse","verdict":"worked","score":null,"score_total":null,"note":"The dubbed voice sounds natural and professional, especially in a neutral educational tone.","artifact_count":0,"thumbnail":null,"evidence_url":"https://aidemos.com/evidence/c7b05430-3e47-41d3-94ed-4abce5fc99ff"},{"id":"aa3d94ef-0421-42d8-9f6a-1de7eaca58c8","tool":"elevenlabs","tool_name":"ElevenLabs","verdict":"worked","score":null,"score_total":null,"note":"The Spanish dubbed voice was described as clear, professional, highly natural sounding, and especially well matched to an educational tone.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/e2db6468583448f28495cee5b785431e.mp4?v=1","evidence_url":"https://aidemos.com/evidence/aa3d94ef-0421-42d8-9f6a-1de7eaca58c8"}],"other_criteria":[{"id":"f037dbdb-abdd-434b-b2ed-4fa491feb92e","criterion":"automation-level","criterion_name":"Automation Level","rank_role":"context","verdict":"worked","score":null,"score_total":null,"note":"After upload, the workflow is rated high automation end-to-end.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/f037dbdb-abdd-434b-b2ed-4fa491feb92e"},{"id":"2dac58d1-57f0-4558-8e66-76eed10d56f5","criterion":"input-handling","criterion_name":"Input Handling","rank_role":"context","verdict":"struggled","score":null,"score_total":null,"note":"The educational clip also required manual upload, and the report says there was no smooth YouTube ingestion.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/2dac58d1-57f0-4558-8e66-76eed10d56f5"},{"id":"83888617-eedb-4955-a52f-443fa404ecd7","criterion":"lip-sync-accuracy","criterion_name":"Lip Sync Accuracy","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"Lip sync is better on the slower educational clip, although slight lag in lip movement remains.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/83888617-eedb-4955-a52f-443fa404ecd7"},{"id":"9de6d786-f08c-4fd4-9a25-301e05cd706f","criterion":"translation-accuracy","criterion_name":"Translation Accuracy","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The Spanish translation is accurate and clear, especially for structured educational speech.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/9de6d786-f08c-4fd4-9a25-301e05cd706f"}],"appears_in":[{"page_type":"ranking","slug":"video-translation-tools","title":"Best AI Tools for Video Translation with Voice Cloning and Lip Sync","url":"https://aidemos.com/best/video-translation-tools","binding":"run"},{"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":"study"}],"same_scenario":[{"id":"736fc6eb-a049-4c15-9ad8-01985e12f148","tool":"d-id","tool_name":"D-ID","verdict":"worked","score":null,"score_total":null,"note":"It outputs a clear, professional-sounding Spanish voice."},{"id":"c7b05430-3e47-41d3-94ed-4abce5fc99ff","tool":"dubverse","tool_name":"Dubverse","verdict":"worked","score":null,"score_total":null,"note":"The dubbed voice sounds natural and professional, especially in a neutral educational tone."},{"id":"aa3d94ef-0421-42d8-9f6a-1de7eaca58c8","tool":"elevenlabs","tool_name":"ElevenLabs","verdict":"worked","score":null,"score_total":null,"note":"The Spanish dubbed voice was described as clear, professional, highly natural sounding, and especially well matched to an educational tone."}]}