{"observation":{"id":"10f86a9c-bbb3-4095-a516-8ae829eac418","tool":"opus-clip","tool_name":"Opus Clip","criterion":"timing-precision","criterion_name":"Timing precision","criterion_definition":"How accurately the tool syncs captions at the word level so highlights land on the right word at the right moment.","criterion_evidence_type":"transformation","criterion_rank_role":null,"criterion_rank_role_reason":null,"scenario":"ai-demos-chatbot-short","scenario_name":"AI demos chatbot short","group_tag":null,"scenario_description":"Fast-speaking single-speaker clip used to stress whether visual word-by-word highlighting stays synchronized with rapid audio.","modality":"video","input_text":null,"input_artifact_refs":[{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/veed-io-input-01-video-6430610baee5.mp4","role":"input","filename":"Input 01 – Video.mp4"}],"stresses":["high-speed audio-visual sync","caption timing under rapid speech","sync drift detection","highlight lag during fast delivery"],"verdict":"struggled","score":null,"score_total":null,"note":"At 1.15x playback speed, word highlighting falls behind fast speech enough to show visible text lag and minor frame drops, so rapid captions are not perfectly locked to the audio.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://d3epheqghktydj.cloudfront.net/veed-io-ai-demos-chatbot-short-f27270c10062.mp4","role":"input","alt":null},{"url":"https://d3epheqghktydj.cloudfront.net/opus-clip-output-2-3ac05520e6c5.png","role":"context","alt":null}],"run_id":"476abcc6-bd47-4f8c-8d81-d7ff6f5293a2","study_title":"Generate Animated Captions with Effects for Videos","study_kind":"generation","research_task":"86ba42c3z","tested_at":null,"completeness":"input-and-output","input":{"state":"files","text":null,"files":[{"url":"https://d3epheqghktydj.cloudfront.net/veed-io-input-01-video-6430610baee5.mp4","filename":"Input 01 – Video.mp4","alt":"AI demos chatbot short","role":"input"}],"modality":"video","stresses":["high-speed audio-visual sync","caption timing under rapid speech","sync drift detection","highlight lag during fast delivery"]},"tool_page_slug":"opus-clip","tool_url":"https://aidemos.com/tools/opus-clip","permalink":"https://aidemos.com/evidence/10f86a9c-bbb3-4095-a516-8ae829eac418","api_url":"https://ai.aidemos.com/v1/observations/10f86a9c-bbb3-4095-a516-8ae829eac418"},"peers":[{"id":"a2b85065-c712-48d4-abc4-99a89fb50d22","tool":"autocaption-io","tool_name":"AutoCaption.io","verdict":"worked","score":null,"score_total":null,"note":"The word-level highlight system stayed locked to the active words during fast speech, with no visible drift across the timeline.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/veed-io-ai-demos-chatbot-short-f27270c10062.mp4","evidence_url":"https://aidemos.com/evidence/a2b85065-c712-48d4-abc4-99a89fb50d22"},{"id":"c539f47e-ac8f-4a99-b976-37cf58ace541","tool":"vidyo-ai","tool_name":"Vidyo.ai","verdict":"mixed","score":null,"score_total":null,"note":"At about 1.15x spoken pace, word highlighting stayed acceptably synchronized, but it still showed fractional-frame lag during the fastest phonetic bursts.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/veed-io-ai-demos-chatbot-short-f27270c10062.mp4","evidence_url":"https://aidemos.com/evidence/c539f47e-ac8f-4a99-b976-37cf58ace541"},{"id":"eb426764-48b3-442d-8ff1-d39065d4611f","tool":"vizard-ai","tool_name":"Vizard.ai","verdict":"worked","score":null,"score_total":null,"note":"Word-level caption highlighting stayed locked to rapid speech, with the report saying it maintained high accuracy and showed no sync drift during fast syllables.","artifact_count":2,"thumbnail":"https://d3epheqghktydj.cloudfront.net/veed-io-ai-demos-chatbot-short-f27270c10062.mp4","evidence_url":"https://aidemos.com/evidence/eb426764-48b3-442d-8ff1-d39065d4611f"}],"other_criteria":[{"id":"882aa8d8-3daf-4e9f-a9e2-542cc83d956a","criterion":"animation-quality","criterion_name":"Animation quality","rank_role":null,"verdict":"struggled","score":null,"score_total":null,"note":"The highlight animation is not fully smooth under speed stress; the report describes minor frame drops and visible stuttering rather than polished continuous motion.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/882aa8d8-3daf-4e9f-a9e2-542cc83d956a"}],"appears_in":[{"page_type":"ranking","slug":"animated-caption-tools","title":"Best AI Tools for Animated Captions with Effects in Videos","url":"https://aidemos.com/best/animated-caption-tools","binding":"run"}],"same_scenario":[{"id":"a2b85065-c712-48d4-abc4-99a89fb50d22","tool":"autocaption-io","tool_name":"AutoCaption.io","verdict":"worked","score":null,"score_total":null,"note":"The word-level highlight system stayed locked to the active words during fast speech, with no visible drift across the timeline."},{"id":"c539f47e-ac8f-4a99-b976-37cf58ace541","tool":"vidyo-ai","tool_name":"Vidyo.ai","verdict":"mixed","score":null,"score_total":null,"note":"At about 1.15x spoken pace, word highlighting stayed acceptably synchronized, but it still showed fractional-frame lag during the fastest phonetic bursts."},{"id":"eb426764-48b3-442d-8ff1-d39065d4611f","tool":"vizard-ai","tool_name":"Vizard.ai","verdict":"worked","score":null,"score_total":null,"note":"Word-level caption highlighting stayed locked to rapid speech, with the report saying it maintained high accuracy and showed no sync drift during fast syllables."}]}