{"observation":{"id":"b1cc7512-fcf0-4f24-a52a-05286b3da77b","tool":"synthesia","tool_name":"Synthesia","criterion":"output-quality-export","criterion_name":"Output Quality & Export","criterion_definition":"Is the final exported video clean, downloadable, and production-ready, including any watermark or credit restrictions?","criterion_evidence_type":"capability","criterion_rank_role":"context","criterion_rank_role_reason":"Downloadability, watermark rules, and export polish matter for delivery, but they are downstream of whether the tool actually performs the translation and dubbing well. (3 of 3 judges)","scenario":"hindi-vlog-style-talking-head-hindi-english","scenario_name":"Hindi vlog-style talking head (Hindi → English)","group_tag":"video-translation-voice-clone-lip-sync","scenario_description":"A casual Hindi/Hinglish talking-head or vlog-style creator video translated into English to stress informal language handling, slang, and natural-sounding voice cloning on real creator content.","modality":"video","input_text":null,"input_artifact_refs":[],"stresses":[],"verdict":"failed","score":null,"score_total":null,"note":"Although the avatar output was described as professional-looking, export was restricted to the paid plan or limited trial and there was no reliable free download.","evidence_state":"verified","source":"first-party","artifacts":[{"url":"https://d3epheqghktydj.cloudfront.net/synthesia-input-1-fitness-video-online-video-cutter-com.mp4","role":"input","alt":"Synthesia — Input 1 Fitness Video (online-video-cutter.com).mp4"}],"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":"input-only","input":{"state":"not-captured","text":null,"files":[],"modality":"video","stresses":[]},"tool_page_slug":"synthesia","tool_url":"https://aidemos.com/tools/synthesia","permalink":"https://aidemos.com/evidence/b1cc7512-fcf0-4f24-a52a-05286b3da77b","api_url":"https://ai.aidemos.com/v1/observations/b1cc7512-fcf0-4f24-a52a-05286b3da77b"},"peers":[{"id":"6d253faa-92b9-4bf9-8dd6-43599ff6354a","tool":"d-id","tool_name":"D-ID","verdict":"mixed","score":null,"score_total":null,"note":"Export was available, but the free plan added limitations such as credits and watermarks.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/d-id-d-id-educationalvideo-en-es-mp4.mp4","evidence_url":"https://aidemos.com/evidence/6d253faa-92b9-4bf9-8dd6-43599ff6354a"},{"id":"52295852-5bc7-4589-acd2-e6e1654cf14c","tool":"elevenlabs","tool_name":"ElevenLabs","verdict":"failed","score":null,"score_total":null,"note":"The exported dub is not fully production-ready because the last part of the audio is missing.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/elevenlabs-input-2-educational-es-dubbed.mp4","evidence_url":"https://aidemos.com/evidence/52295852-5bc7-4589-acd2-e6e1654cf14c"}],"other_criteria":[{"id":"9e0d1ab3-8778-4f60-a7eb-e6e29596a4f4","criterion":"translation-accuracy","criterion_name":"Translation Accuracy","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The Hindi translation preserved the source meaning accurately for the fitness short.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/9e0d1ab3-8778-4f60-a7eb-e6e29596a4f4"},{"id":"efb14767-e1eb-4dfd-ae5c-751c213331e3","criterion":"translation-accuracy","criterion_name":"Translation Accuracy","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"The English translation was semantically accurate, but the output shifted the casual vlog register toward a slightly more formal tone.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/efb14767-e1eb-4dfd-ae5c-751c213331e3"},{"id":"030c9db7-f816-43d2-b027-776df036ad69","criterion":"translation-accuracy","criterion_name":"Translation Accuracy","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The Spanish output was reported as accurate and well-structured, showing that the tool can preserve educational content clearly during translation.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/030c9db7-f816-43d2-b027-776df036ad69"},{"id":"e219f2da-9cfd-4b35-af38-9f5e8628329a","criterion":"voice-cloning-quality","criterion_name":"Voice Cloning Quality","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"The generated Hindi voice was clear and natural, but the output used an AI avatar instead of the original person, so it did not preserve the source speaker’s identity or style.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/e219f2da-9cfd-4b35-af38-9f5e8628329a"},{"id":"45471936-c9c8-42d9-8935-b184a7aa6e90","criterion":"voice-cloning-quality","criterion_name":"Voice Cloning Quality","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"The dubbed voice was clean and understandable, but it did not fully capture the casual conversational tone of the original vlog speaker.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/45471936-c9c8-42d9-8935-b184a7aa6e90"},{"id":"c32e56fb-f126-4c48-ae4f-6fa64b280f18","criterion":"voice-cloning-quality","criterion_name":"Voice Cloning Quality","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"The Spanish voice sounded natural and professional, but the report frames the workflow as avatar-based rather than source-speaker-based, so it does not demonstrate true original-speaker voice cloning.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/c32e56fb-f126-4c48-ae4f-6fa64b280f18"}],"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":[{"id":"6d253faa-92b9-4bf9-8dd6-43599ff6354a","tool":"d-id","tool_name":"D-ID","verdict":"mixed","score":null,"score_total":null,"note":"Export was available, but the free plan added limitations such as credits and watermarks."},{"id":"52295852-5bc7-4589-acd2-e6e1654cf14c","tool":"elevenlabs","tool_name":"ElevenLabs","verdict":"failed","score":null,"score_total":null,"note":"The exported dub is not fully production-ready because the last part of the audio is missing."}]}