{"observation":{"id":"2176350b-7bf3-4457-a943-e84786bd3cc9","tool":"media-io","tool_name":"Media.io","criterion":"lighting-adaptation","criterion_name":"Lighting adaptation","criterion_definition":"Does the replaced background look naturally lit relative to the subject, or obviously composited?","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"If the replaced background does not match the subject’s lighting, the composite looks fake, so this is central to replacement quality. (3 of 3 judges)","scenario":"indoor-talking-head","scenario_name":"Indoor Talking Head","group_tag":"remove-or-replace-video-backgrounds-using-ai","scenario_description":"An indoor talking-head video of a person speaking directly to the camera with a static background, natural hand gestures, and facial expressions. It was used to test how well tools preserve the subject while replacing an indoor background.","modality":"video","input_text":null,"input_artifact_refs":[{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/remove-or-replace-video-backgrounds-usin-input-2-0e8b7fa1a596.mp4","role":"input","filename":"Input 2.mp4"}],"stresses":["Static camera performance","Face and body segmentation","Facial expression preservation","Background replacement accuracy in an indoor environment"],"verdict":"struggled","score":null,"score_total":null,"note":"The replacement scene looked coherent, but the subject kept flat neutral source lighting against the moody studio backdrop, with no grounding shadow and a monitor element colliding with the hair silhouette.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://cdn.futuresmart.ai/public/aidemos/4e8c31f2e57a455b9933e73a6671f251.png?v=1","role":"output","alt":null},{"url":"https://cdn.futuresmart.ai/public/aidemos/35c59fbf037e4e7aa3e65178d8dd5c27.png?v=1","role":"output","alt":null},{"url":"https://cdn.futuresmart.ai/public/aidemos/ac7123ba67264f8a8afa0fcb26734b79.png?v=1","role":"output","alt":null},{"url":"https://cdn.futuresmart.ai/public/aidemos/b1ba95b1f66a4a8c90b0201561c8b3e2.mp4?v=1","role":"output","alt":null},{"url":"https://cdn.futuresmart.ai/public/aidemos/2912c3bd2c34492cbd0f7eb26a8344f9.mp4?v=1","role":"output","alt":null},{"url":"https://cdn.futuresmart.ai/public/aidemos/970705f49c5f4ef5bc41aace4b95a367.mp4?v=1","role":"output","alt":null}],"run_id":"10155228-7ce8-438a-a210-547331ef080b","study_title":"Remove or Replace Video Backgrounds Using AI","study_kind":"generation","research_task":"86ba42c2d","tested_at":null,"completeness":"input-and-output","input":{"state":"files","text":null,"files":[{"url":"https://d3epheqghktydj.cloudfront.net/remove-or-replace-video-backgrounds-usin-input-2-0e8b7fa1a596.mp4","filename":"Input 2.mp4","alt":"Indoor Talking Head","role":"input"}],"modality":"video","stresses":["Static camera performance","Face and body segmentation","Facial expression preservation","Background replacement accuracy in an indoor environment"]},"tool_page_slug":"media-io","tool_url":"https://aidemos.com/tools/media-io","permalink":"https://aidemos.com/evidence/2176350b-7bf3-4457-a943-e84786bd3cc9","api_url":"https://ai.aidemos.com/v1/observations/2176350b-7bf3-4457-a943-e84786bd3cc9"},"peers":[{"id":"69240bb5-8766-4fbb-9a67-aa46dbf15bc4","tool":"descript","tool_name":"Descript","verdict":"struggled","score":null,"score_total":null,"note":"The subject keeps flat neutral lighting instead of picking up the new room’s warm or cool color spill, so the composite reads less naturally lit.","artifact_count":1,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/eb875ef472994019aff68a45d691afb2.png?v=1","evidence_url":"https://aidemos.com/evidence/69240bb5-8766-4fbb-9a67-aa46dbf15bc4"}],"other_criteria":[{"id":"dfae1f9b-ba9d-412d-8376-14981555bc73","criterion":"hair-and-fine-detail","criterion_name":"Hair and fine detail","rank_role":"decisive","verdict":"struggled","score":null,"score_total":null,"note":"Hair matting stayed stiff and slightly jagged against the dark backdrop, giving the head a hard, sticker-like edge instead of soft hair detail.","artifact_count":4,"evidence_url":"https://aidemos.com/evidence/dfae1f9b-ba9d-412d-8376-14981555bc73"}],"appears_in":[{"page_type":"ranking","slug":"video-background-removers","title":"Best AI Tools to Remove or Replace Video Backgrounds with AI","url":"https://aidemos.com/best/video-background-removers","binding":"run"}],"same_scenario":[{"id":"69240bb5-8766-4fbb-9a67-aa46dbf15bc4","tool":"descript","tool_name":"Descript","verdict":"struggled","score":null,"score_total":null,"note":"The subject keeps flat neutral lighting instead of picking up the new room’s warm or cool color spill, so the composite reads less naturally lit."}]}