{"abstract":"The first clip airs late by the black gap.","category":"Broadcast timecode arithmetic","checks":8,"contract":"Clips [SOM, EOM] use non-drop labels at fps with EOM inclusive; a clip may cross midnight on tape. Clips air back to back from start with gap black frames between consecutive clips. Return the on-air label of each clip followed by the exclusive end label of the schedule, wrapping at 24 hours.","evaluation_group":"w2-broadcast-timecode-arithmetic-playout-schedule","failed_approach":"Skipping the gap before the last clip instead of the first shifts the final clip early.","family":"w2-broadcast-timecode-arithmetic-playout-schedule-inter-clip-gap","id":"FA-78716","implementations":{"attempt":{"sha256":"4c9379eac56382d7b6a30ec1ee0ce34148a9db9079eb7003b5854a982e4bf945","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(start, clips, gap, fps):\n    def fr(t):\n        h,m,s,f=map(int,t.split(':'))\n        return ((h*60+m)*60+s)*fps+f\n    def lab(n):\n        n%=86400*fps\n        return '%02d:%02d:%02d:%02d'%(n//(3600*fps),n//(60*fps)%60,n//fps%60,n%fps)\n    t=fr(start)\n    out=[]\n    for i,(som,eom) in enumerate(clips):\n        if i<len(clips)-1:\n            t+=gap\n        out.append(lab(t))\n        d=(fr(eom)-fr(som))%(86400*fps)\n        t+=d+1\n    out.append(lab(t))\n    return out\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: inter-clip gap', ['23:59:59:00', [['00:00:00:00', '00:00:01:00'], ['00:00:00:00', '00:00:00:00']], 5, 25], ['23:59:59:00', '00:00:00:06', '00:00:00:07']), ('regression variant: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '01:00:30:00'], ['00:00:00:00', '01:00:30:00']], 25, 30], ['23:59:50:00', '15:00:20:26', '16:00:50:27']), ('partial repair probe: inter-clip gap', ['18:00:00:00', [['01:00:00:00', '00:00:01:00'], ['01:00:00:00', '10:00:10:00'], ['23:59:59:00', '00:00:00:10'], ['00:00:00:00', '00:00:00:10']], 25, 25], ['18:00:00:00', '17:00:02:01', '02:00:13:02', '02:00:15:13', '02:00:15:24']), ('partial repair variant: inter-clip gap', ['23:59:50:00', [['23:59:59:00', '00:00:00:10'], ['10:00:00:00', '01:00:30:00'], ['23:59:59:00', '00:00:00:00']], 25, 30], ['23:59:50:00', '23:59:52:06', '15:00:23:02', '15:00:24:03']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['00:00:00:00', [], 25, 25], ['00:00:00:00']), ('normal control', ['23:59:50:00', [], 1, 30], ['23:59:50:00']), ('normal control', ['18:00:00:00', [['00:00:00:00', '00:00:01:00'], ['01:00:00:00', '10:00:29:24'], ['23:59:59:00', '00:00:01:00']], 0, 25], ['18:00:00:00', '18:00:01:01', '03:00:31:01', '03:00:33:02'])], [('regression: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '00:00:00:10'], ['00:00:00:00', '10:00:29:24'], ['00:00:00:00', '01:00:30:00']], 25, 30], ['23:59:50:00', '13:59:51:06', '00:00:21:26', '01:00:51:27']), ('regression variant: inter-clip gap', ['18:00:00:00', [['23:59:59:00', '00:00:00:10'], ['23:59:59:00', '00:00:01:00']], 5, 25], ['18:00:00:00', '18:00:01:16', '18:00:03:17']), ('partial repair probe: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '01:00:30:00'], ['00:00:00:00', '01:00:30:00']], 25, 30], ['23:59:50:00', '15:00:20:26', '16:00:50:27']), ('partial repair variant: inter-clip gap', ['00:00:00:00', [['00:00:00:00', '01:00:30:00'], ['10:00:00:00', '00:00:00:00'], ['23:59:59:00', '00:00:01:00'], ['23:59:59:00', '00:00:00:00']], 25, 25], ['00:00:00:00', '01:00:31:01', '15:00:32:02', '15:00:35:03', '15:00:36:04']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['18:00:00:00', [['00:00:00:00', '10:00:29:24'], ['00:00:00:00', '10:00:10:00']], 0, 30], ['18:00:00:00', '04:00:29:25', '14:00:39:26']), ('normal control', ['00:00:00:00', [['00:00:00:00', '00:00:00:10'], ['10:00:00:00', '01:00:30:00'], ['10:00:00:00', '00:00:01:00'], ['00:00:00:00', '10:00:29:24']], 0, 25], ['00:00:00:00', '00:00:00:11', '15:00:30:12', '05:00:31:13', '15:01:01:13']), ('normal control', ['18:00:00:00', [], 0, 30], ['18:00:00:00'])], [('regression: inter-clip gap', ['18:00:00:00', [['23:59:59:00', '01:00:30:00']], 5, 30], ['18:00:00:00', '19:00:31:01']), ('regression variant: inter-clip gap', ['00:00:00:00', [['10:00:00:00', '00:00:01:00'], ['10:00:00:00', '00:00:00:10']], 1, 30], ['00:00:00:00', '14:00:01:02', '04:00:01:13']), ('partial repair probe: inter-clip gap', ['18:00:00:00', [['23:59:59:00', '00:00:00:10'], ['23:59:59:00', '00:00:01:00']], 5, 25], ['18:00:00:00', '18:00:01:16', '18:00:03:17']), ('partial repair variant: inter-clip gap', ['00:00:00:00', [['01:00:00:00', '00:00:01:00'], ['23:59:59:00', '00:00:00:00'], ['10:00:00:00', '01:00:30:00']], 25, 25], ['00:00:00:00', '23:00:02:01', '23:00:04:02', '14:00:34:03']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['18:00:00:00', [], 1, 30], ['18:00:00:00']), ('normal control', ['18:00:00:00', [], 25, 25], ['18:00:00:00']), ('normal control', ['00:00:00:00', [['23:59:59:00', '10:00:29:24']], 0, 30], ['00:00:00:00', '10:00:30:25'])], [('regression: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '00:00:00:00']], 25, 30], ['23:59:50:00', '13:59:50:01']), ('regression variant: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '00:00:00:00']], 5, 25], ['23:59:50:00', '13:59:50:01']), ('partial repair probe: inter-clip gap', ['00:00:00:00', [['10:00:00:00', '00:00:01:00'], ['10:00:00:00', '00:00:00:10']], 1, 30], ['00:00:00:00', '14:00:01:02', '04:00:01:13']), ('partial repair variant: inter-clip gap', ['00:00:00:00', [['01:00:00:00', '00:00:00:10'], ['10:00:00:00', '10:00:29:24']], 25, 30], ['00:00:00:00', '23:00:01:06', '23:00:31:01']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['00:00:00:00', [['10:00:00:00', '10:00:10:00'], ['10:00:00:00', '00:00:01:00'], ['23:59:59:00', '10:00:29:24'], ['23:59:59:00', '10:00:29:24']], 0, 25], ['00:00:00:00', '00:00:10:01', '14:00:11:02', '00:00:42:02', '10:01:13:02']), ('normal control', ['18:00:00:00', [], 1, 25], ['18:00:00:00']), ('normal control', ['18:00:00:00', [['00:00:00:00', '00:00:00:00'], ['23:59:59:00', '10:00:10:00'], ['00:00:00:00', '10:00:29:24']], 0, 25], ['18:00:00:00', '18:00:00:01', '04:00:11:02', '14:00:41:02'])], [('regression: inter-clip gap', ['18:00:00:00', [['01:00:00:00', '00:00:01:00'], ['01:00:00:00', '10:00:10:00'], ['23:59:59:00', '00:00:00:10'], ['00:00:00:00', '00:00:00:10']], 25, 25], ['18:00:00:00', '17:00:02:01', '02:00:13:02', '02:00:15:13', '02:00:15:24']), ('regression variant: inter-clip gap', ['00:00:00:00', [['01:00:00:00', '10:00:29:24'], ['01:00:00:00', '00:00:01:00'], ['23:59:59:00', '01:00:30:00']], 1, 30], ['00:00:00:00', '09:00:29:26', '08:00:30:28', '09:01:01:29']), ('partial repair probe: inter-clip gap', ['00:00:00:00', [['10:00:00:00', '00:00:00:10'], ['23:59:59:00', '00:00:00:00'], ['00:00:00:00', '10:00:10:00']], 25, 25], ['00:00:00:00', '14:00:01:11', '14:00:03:12', '00:00:13:13']), ('partial repair variant: inter-clip gap', ['23:59:50:00', [['00:00:00:00', '00:00:01:00'], ['23:59:59:00', '10:00:10:00'], ['01:00:00:00', '10:00:10:00'], ['23:59:59:00', '00:00:00:10']], 25, 25], ['23:59:50:00', '23:59:52:01', '10:00:04:02', '19:00:15:03', '19:00:16:14']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['18:00:00:00', [['23:59:59:00', '00:00:00:10'], ['10:00:00:00', '10:00:10:00'], ['01:00:00:00', '01:00:30:00']], 0, 25], ['18:00:00:00', '18:00:01:11', '18:00:11:12', '18:00:41:13']), ('normal control', ['00:00:00:00', [], 0, 25], ['00:00:00:00']), ('normal control', ['18:00:00:00', [], 5, 25], ['18:00:00:00'])]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"ed16da8af741cffa8d98e410e844bc700c08720ddd323e196b28796eacb32f60","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(start, clips, gap, fps):\n    def fr(t):\n        h,m,s,f=map(int,t.split(':'))\n        return ((h*60+m)*60+s)*fps+f\n    def lab(n):\n        n%=86400*fps\n        return '%02d:%02d:%02d:%02d'%(n//(3600*fps),n//(60*fps)%60,n//fps%60,n%fps)\n    t=fr(start)\n    out=[]\n    for i,(som,eom) in enumerate(clips):\n        if True:\n            t+=gap\n        out.append(lab(t))\n        d=(fr(eom)-fr(som))%(86400*fps)\n        t+=d+1\n    out.append(lab(t))\n    return out\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: inter-clip gap', ['23:59:59:00', [['00:00:00:00', '00:00:01:00'], ['00:00:00:00', '00:00:00:00']], 5, 25], ['23:59:59:00', '00:00:00:06', '00:00:00:07']), ('regression variant: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '01:00:30:00'], ['00:00:00:00', '01:00:30:00']], 25, 30], ['23:59:50:00', '15:00:20:26', '16:00:50:27']), ('partial repair probe: inter-clip gap', ['18:00:00:00', [['01:00:00:00', '00:00:01:00'], ['01:00:00:00', '10:00:10:00'], ['23:59:59:00', '00:00:00:10'], ['00:00:00:00', '00:00:00:10']], 25, 25], ['18:00:00:00', '17:00:02:01', '02:00:13:02', '02:00:15:13', '02:00:15:24']), ('partial repair variant: inter-clip gap', ['23:59:50:00', [['23:59:59:00', '00:00:00:10'], ['10:00:00:00', '01:00:30:00'], ['23:59:59:00', '00:00:00:00']], 25, 30], ['23:59:50:00', '23:59:52:06', '15:00:23:02', '15:00:24:03']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['00:00:00:00', [], 25, 25], ['00:00:00:00']), ('normal control', ['23:59:50:00', [], 1, 30], ['23:59:50:00']), ('normal control', ['18:00:00:00', [['00:00:00:00', '00:00:01:00'], ['01:00:00:00', '10:00:29:24'], ['23:59:59:00', '00:00:01:00']], 0, 25], ['18:00:00:00', '18:00:01:01', '03:00:31:01', '03:00:33:02'])], [('regression: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '00:00:00:10'], ['00:00:00:00', '10:00:29:24'], ['00:00:00:00', '01:00:30:00']], 25, 30], ['23:59:50:00', '13:59:51:06', '00:00:21:26', '01:00:51:27']), ('regression variant: inter-clip gap', ['18:00:00:00', [['23:59:59:00', '00:00:00:10'], ['23:59:59:00', '00:00:01:00']], 5, 25], ['18:00:00:00', '18:00:01:16', '18:00:03:17']), ('partial repair probe: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '01:00:30:00'], ['00:00:00:00', '01:00:30:00']], 25, 30], ['23:59:50:00', '15:00:20:26', '16:00:50:27']), ('partial repair variant: inter-clip gap', ['00:00:00:00', [['00:00:00:00', '01:00:30:00'], ['10:00:00:00', '00:00:00:00'], ['23:59:59:00', '00:00:01:00'], ['23:59:59:00', '00:00:00:00']], 25, 25], ['00:00:00:00', '01:00:31:01', '15:00:32:02', '15:00:35:03', '15:00:36:04']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['18:00:00:00', [['00:00:00:00', '10:00:29:24'], ['00:00:00:00', '10:00:10:00']], 0, 30], ['18:00:00:00', '04:00:29:25', '14:00:39:26']), ('normal control', ['00:00:00:00', [['00:00:00:00', '00:00:00:10'], ['10:00:00:00', '01:00:30:00'], ['10:00:00:00', '00:00:01:00'], ['00:00:00:00', '10:00:29:24']], 0, 25], ['00:00:00:00', '00:00:00:11', '15:00:30:12', '05:00:31:13', '15:01:01:13']), ('normal control', ['18:00:00:00', [], 0, 30], ['18:00:00:00'])], [('regression: inter-clip gap', ['18:00:00:00', [['23:59:59:00', '01:00:30:00']], 5, 30], ['18:00:00:00', '19:00:31:01']), ('regression variant: inter-clip gap', ['00:00:00:00', [['10:00:00:00', '00:00:01:00'], ['10:00:00:00', '00:00:00:10']], 1, 30], ['00:00:00:00', '14:00:01:02', '04:00:01:13']), ('partial repair probe: inter-clip gap', ['18:00:00:00', [['23:59:59:00', '00:00:00:10'], ['23:59:59:00', '00:00:01:00']], 5, 25], ['18:00:00:00', '18:00:01:16', '18:00:03:17']), ('partial repair variant: inter-clip gap', ['00:00:00:00', [['01:00:00:00', '00:00:01:00'], ['23:59:59:00', '00:00:00:00'], ['10:00:00:00', '01:00:30:00']], 25, 25], ['00:00:00:00', '23:00:02:01', '23:00:04:02', '14:00:34:03']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['18:00:00:00', [], 1, 30], ['18:00:00:00']), ('normal control', ['18:00:00:00', [], 25, 25], ['18:00:00:00']), ('normal control', ['00:00:00:00', [['23:59:59:00', '10:00:29:24']], 0, 30], ['00:00:00:00', '10:00:30:25'])], [('regression: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '00:00:00:00']], 25, 30], ['23:59:50:00', '13:59:50:01']), ('regression variant: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '00:00:00:00']], 5, 25], ['23:59:50:00', '13:59:50:01']), ('partial repair probe: inter-clip gap', ['00:00:00:00', [['10:00:00:00', '00:00:01:00'], ['10:00:00:00', '00:00:00:10']], 1, 30], ['00:00:00:00', '14:00:01:02', '04:00:01:13']), ('partial repair variant: inter-clip gap', ['00:00:00:00', [['01:00:00:00', '00:00:00:10'], ['10:00:00:00', '10:00:29:24']], 25, 30], ['00:00:00:00', '23:00:01:06', '23:00:31:01']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['00:00:00:00', [['10:00:00:00', '10:00:10:00'], ['10:00:00:00', '00:00:01:00'], ['23:59:59:00', '10:00:29:24'], ['23:59:59:00', '10:00:29:24']], 0, 25], ['00:00:00:00', '00:00:10:01', '14:00:11:02', '00:00:42:02', '10:01:13:02']), ('normal control', ['18:00:00:00', [], 1, 25], ['18:00:00:00']), ('normal control', ['18:00:00:00', [['00:00:00:00', '00:00:00:00'], ['23:59:59:00', '10:00:10:00'], ['00:00:00:00', '10:00:29:24']], 0, 25], ['18:00:00:00', '18:00:00:01', '04:00:11:02', '14:00:41:02'])], [('regression: inter-clip gap', ['18:00:00:00', [['01:00:00:00', '00:00:01:00'], ['01:00:00:00', '10:00:10:00'], ['23:59:59:00', '00:00:00:10'], ['00:00:00:00', '00:00:00:10']], 25, 25], ['18:00:00:00', '17:00:02:01', '02:00:13:02', '02:00:15:13', '02:00:15:24']), ('regression variant: inter-clip gap', ['00:00:00:00', [['01:00:00:00', '10:00:29:24'], ['01:00:00:00', '00:00:01:00'], ['23:59:59:00', '01:00:30:00']], 1, 30], ['00:00:00:00', '09:00:29:26', '08:00:30:28', '09:01:01:29']), ('partial repair probe: inter-clip gap', ['00:00:00:00', [['10:00:00:00', '00:00:00:10'], ['23:59:59:00', '00:00:00:00'], ['00:00:00:00', '10:00:10:00']], 25, 25], ['00:00:00:00', '14:00:01:11', '14:00:03:12', '00:00:13:13']), ('partial repair variant: inter-clip gap', ['23:59:50:00', [['00:00:00:00', '00:00:01:00'], ['23:59:59:00', '10:00:10:00'], ['01:00:00:00', '10:00:10:00'], ['23:59:59:00', '00:00:00:10']], 25, 25], ['23:59:50:00', '23:59:52:01', '10:00:04:02', '19:00:15:03', '19:00:16:14']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['18:00:00:00', [['23:59:59:00', '00:00:00:10'], ['10:00:00:00', '10:00:10:00'], ['01:00:00:00', '01:00:30:00']], 0, 25], ['18:00:00:00', '18:00:01:11', '18:00:11:12', '18:00:41:13']), ('normal control', ['00:00:00:00', [], 0, 25], ['00:00:00:00']), ('normal control', ['18:00:00:00', [], 5, 25], ['18:00:00:00'])]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"8c3244b3bf1154cb8c860c3d638c109b5fdfa63f381e9130dd7f4884f27feef1","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(start, clips, gap, fps):\n    def fr(t):\n        h,m,s,f=map(int,t.split(':'))\n        return ((h*60+m)*60+s)*fps+f\n    def lab(n):\n        n%=86400*fps\n        return '%02d:%02d:%02d:%02d'%(n//(3600*fps),n//(60*fps)%60,n//fps%60,n%fps)\n    t=fr(start)\n    out=[]\n    for i,(som,eom) in enumerate(clips):\n        if i:\n            t+=gap\n        out.append(lab(t))\n        d=(fr(eom)-fr(som))%(86400*fps)\n        t+=d+1\n    out.append(lab(t))\n    return out\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: inter-clip gap', ['23:59:59:00', [['00:00:00:00', '00:00:01:00'], ['00:00:00:00', '00:00:00:00']], 5, 25], ['23:59:59:00', '00:00:00:06', '00:00:00:07']), ('regression variant: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '01:00:30:00'], ['00:00:00:00', '01:00:30:00']], 25, 30], ['23:59:50:00', '15:00:20:26', '16:00:50:27']), ('partial repair probe: inter-clip gap', ['18:00:00:00', [['01:00:00:00', '00:00:01:00'], ['01:00:00:00', '10:00:10:00'], ['23:59:59:00', '00:00:00:10'], ['00:00:00:00', '00:00:00:10']], 25, 25], ['18:00:00:00', '17:00:02:01', '02:00:13:02', '02:00:15:13', '02:00:15:24']), ('partial repair variant: inter-clip gap', ['23:59:50:00', [['23:59:59:00', '00:00:00:10'], ['10:00:00:00', '01:00:30:00'], ['23:59:59:00', '00:00:00:00']], 25, 30], ['23:59:50:00', '23:59:52:06', '15:00:23:02', '15:00:24:03']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['00:00:00:00', [], 25, 25], ['00:00:00:00']), ('normal control', ['23:59:50:00', [], 1, 30], ['23:59:50:00']), ('normal control', ['18:00:00:00', [['00:00:00:00', '00:00:01:00'], ['01:00:00:00', '10:00:29:24'], ['23:59:59:00', '00:00:01:00']], 0, 25], ['18:00:00:00', '18:00:01:01', '03:00:31:01', '03:00:33:02'])], [('regression: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '00:00:00:10'], ['00:00:00:00', '10:00:29:24'], ['00:00:00:00', '01:00:30:00']], 25, 30], ['23:59:50:00', '13:59:51:06', '00:00:21:26', '01:00:51:27']), ('regression variant: inter-clip gap', ['18:00:00:00', [['23:59:59:00', '00:00:00:10'], ['23:59:59:00', '00:00:01:00']], 5, 25], ['18:00:00:00', '18:00:01:16', '18:00:03:17']), ('partial repair probe: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '01:00:30:00'], ['00:00:00:00', '01:00:30:00']], 25, 30], ['23:59:50:00', '15:00:20:26', '16:00:50:27']), ('partial repair variant: inter-clip gap', ['00:00:00:00', [['00:00:00:00', '01:00:30:00'], ['10:00:00:00', '00:00:00:00'], ['23:59:59:00', '00:00:01:00'], ['23:59:59:00', '00:00:00:00']], 25, 25], ['00:00:00:00', '01:00:31:01', '15:00:32:02', '15:00:35:03', '15:00:36:04']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['18:00:00:00', [['00:00:00:00', '10:00:29:24'], ['00:00:00:00', '10:00:10:00']], 0, 30], ['18:00:00:00', '04:00:29:25', '14:00:39:26']), ('normal control', ['00:00:00:00', [['00:00:00:00', '00:00:00:10'], ['10:00:00:00', '01:00:30:00'], ['10:00:00:00', '00:00:01:00'], ['00:00:00:00', '10:00:29:24']], 0, 25], ['00:00:00:00', '00:00:00:11', '15:00:30:12', '05:00:31:13', '15:01:01:13']), ('normal control', ['18:00:00:00', [], 0, 30], ['18:00:00:00'])], [('regression: inter-clip gap', ['18:00:00:00', [['23:59:59:00', '01:00:30:00']], 5, 30], ['18:00:00:00', '19:00:31:01']), ('regression variant: inter-clip gap', ['00:00:00:00', [['10:00:00:00', '00:00:01:00'], ['10:00:00:00', '00:00:00:10']], 1, 30], ['00:00:00:00', '14:00:01:02', '04:00:01:13']), ('partial repair probe: inter-clip gap', ['18:00:00:00', [['23:59:59:00', '00:00:00:10'], ['23:59:59:00', '00:00:01:00']], 5, 25], ['18:00:00:00', '18:00:01:16', '18:00:03:17']), ('partial repair variant: inter-clip gap', ['00:00:00:00', [['01:00:00:00', '00:00:01:00'], ['23:59:59:00', '00:00:00:00'], ['10:00:00:00', '01:00:30:00']], 25, 25], ['00:00:00:00', '23:00:02:01', '23:00:04:02', '14:00:34:03']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['18:00:00:00', [], 1, 30], ['18:00:00:00']), ('normal control', ['18:00:00:00', [], 25, 25], ['18:00:00:00']), ('normal control', ['00:00:00:00', [['23:59:59:00', '10:00:29:24']], 0, 30], ['00:00:00:00', '10:00:30:25'])], [('regression: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '00:00:00:00']], 25, 30], ['23:59:50:00', '13:59:50:01']), ('regression variant: inter-clip gap', ['23:59:50:00', [['10:00:00:00', '00:00:00:00']], 5, 25], ['23:59:50:00', '13:59:50:01']), ('partial repair probe: inter-clip gap', ['00:00:00:00', [['10:00:00:00', '00:00:01:00'], ['10:00:00:00', '00:00:00:10']], 1, 30], ['00:00:00:00', '14:00:01:02', '04:00:01:13']), ('partial repair variant: inter-clip gap', ['00:00:00:00', [['01:00:00:00', '00:00:00:10'], ['10:00:00:00', '10:00:29:24']], 25, 30], ['00:00:00:00', '23:00:01:06', '23:00:31:01']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['00:00:00:00', [['10:00:00:00', '10:00:10:00'], ['10:00:00:00', '00:00:01:00'], ['23:59:59:00', '10:00:29:24'], ['23:59:59:00', '10:00:29:24']], 0, 25], ['00:00:00:00', '00:00:10:01', '14:00:11:02', '00:00:42:02', '10:01:13:02']), ('normal control', ['18:00:00:00', [], 1, 25], ['18:00:00:00']), ('normal control', ['18:00:00:00', [['00:00:00:00', '00:00:00:00'], ['23:59:59:00', '10:00:10:00'], ['00:00:00:00', '10:00:29:24']], 0, 25], ['18:00:00:00', '18:00:00:01', '04:00:11:02', '14:00:41:02'])], [('regression: inter-clip gap', ['18:00:00:00', [['01:00:00:00', '00:00:01:00'], ['01:00:00:00', '10:00:10:00'], ['23:59:59:00', '00:00:00:10'], ['00:00:00:00', '00:00:00:10']], 25, 25], ['18:00:00:00', '17:00:02:01', '02:00:13:02', '02:00:15:13', '02:00:15:24']), ('regression variant: inter-clip gap', ['00:00:00:00', [['01:00:00:00', '10:00:29:24'], ['01:00:00:00', '00:00:01:00'], ['23:59:59:00', '01:00:30:00']], 1, 30], ['00:00:00:00', '09:00:29:26', '08:00:30:28', '09:01:01:29']), ('partial repair probe: inter-clip gap', ['00:00:00:00', [['10:00:00:00', '00:00:00:10'], ['23:59:59:00', '00:00:00:00'], ['00:00:00:00', '10:00:10:00']], 25, 25], ['00:00:00:00', '14:00:01:11', '14:00:03:12', '00:00:13:13']), ('partial repair variant: inter-clip gap', ['23:59:50:00', [['00:00:00:00', '00:00:01:00'], ['23:59:59:00', '10:00:10:00'], ['01:00:00:00', '10:00:10:00'], ['23:59:59:00', '00:00:00:10']], 25, 25], ['23:59:50:00', '23:59:52:01', '10:00:04:02', '19:00:15:03', '19:00:16:14']), ('boundary control', ['18:00:00:00', [['10:00:00:00', '10:00:00:24']], 0, 25], ['18:00:00:00', '18:00:01:00']), ('normal control', ['18:00:00:00', [['23:59:59:00', '00:00:00:10'], ['10:00:00:00', '10:00:10:00'], ['01:00:00:00', '01:00:30:00']], 0, 25], ['18:00:00:00', '18:00:01:11', '18:00:11:12', '18:00:41:13']), ('normal control', ['00:00:00:00', [], 0, 25], ['00:00:00:00']), ('normal control', ['18:00:00:00', [], 5, 25], ['18:00:00:00'])]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"A deterministic bounded teaching model with a stipulated toy contract; it does not claim conformance to SMPTE or any broadcast standard. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-broadcast-timecode-arithmetic-playout-schedule-inter-clip-gap","generated_at":"2026-09-29T14:49:37.964693+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Timecode arithmetic errors misplace edits, commercial breaks and captions against the broadcast clock.","repair":"Insert the gap only between consecutive clips.","root_cause":"Black is inserted before every clip, including the first.","sha256":"b54c81c066309cdd3132f783db31bfa400d828d82e2d279b899d140545b55041","title":"Playout schedule on-air times: inter-clip gap · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":39.185,"exit_code":1,"observations":[{"actual":["23:59:59:05","00:00:00:06","00:00:00:07"],"check":"regression: inter-clip gap","expected":["23:59:59:00","00:00:00:06","00:00:00:07"],"passed":false},{"actual":["23:59:50:25","15:00:20:26","16:00:50:27"],"check":"regression variant: inter-clip gap","expected":["23:59:50:00","15:00:20:26","16:00:50:27"],"passed":false},{"actual":["18:00:01:00","17:00:03:01","02:00:14:02","02:00:15:13","02:00:15:24"],"check":"partial repair probe: inter-clip gap","expected":["18:00:00:00","17:00:02:01","02:00:13:02","02:00:15:13","02:00:15:24"],"passed":false},{"actual":["23:59:50:25","23:59:53:01","15:00:23:02","15:00:24:03"],"check":"partial repair variant: inter-clip gap","expected":["23:59:50:00","23:59:52:06","15:00:23:02","15:00:24:03"],"passed":false},{"actual":["18:00:00:00","18:00:01:00"],"check":"boundary control","expected":["18:00:00:00","18:00:01:00"],"passed":true},{"actual":["00:00:00:00"],"check":"normal control","expected":["00:00:00:00"],"passed":true},{"actual":["23:59:50:00"],"check":"normal control","expected":["23:59:50:00"],"passed":true},{"actual":["18:00:00:00","18:00:01:01","03:00:31:01","03:00:33:02"],"check":"normal control","expected":["18:00:00:00","18:00:01:01","03:00:31:01","03:00:33:02"],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: inter-clip gap\", \"actual\": [\"23:59:59:05\", \"00:00:00:06\", \"00:00:00:07\"], \"expected\": [\"23:59:59:00\", \"00:00:00:06\", \"00:00:00:07\"], \"passed\": false}, {\"check\": \"regression variant: inter-clip gap\", \"actual\": [\"23:59:50:25\", \"15:00:20:26\", \"16:00:50:27\"], \"expected\": [\"23:59:50:00\", \"15:00:20:26\", \"16:00:50:27\"], \"passed\": false}, {\"check\": \"partial repair probe: inter-clip gap\", \"actual\": [\"18:00:01:00\", \"17:00:03:01\", \"02:00:14:02\", \"02:00:15:13\", \"02:00:15:24\"], \"expected\": [\"18:00:00:00\", \"17:00:02:01\", \"02:00:13:02\", \"02:00:15:13\", \"02:00:15:24\"], \"passed\": false}, {\"check\": \"partial repair variant: inter-clip gap\", \"actual\": [\"23:59:50:25\", \"23:59:53:01\", \"15:00:23:02\", \"15:00:24:03\"], \"expected\": [\"23:59:50:00\", \"23:59:52:06\", \"15:00:23:02\", \"15:00:24:03\"], \"passed\": false}, {\"check\": \"boundary control\", \"actual\": [\"18:00:00:00\", \"18:00:01:00\"], \"expected\": [\"18:00:00:00\", \"18:00:01:00\"], \"passed\": true}, {\"check\": \"normal control\", \"actual\": [\"00:00:00:00\"], \"expected\": [\"00:00:00:00\"], \"passed\": true}, {\"check\": \"normal control\", \"actual\": [\"23:59:50:00\"], \"expected\": [\"23:59:50:00\"], \"passed\": true}, {\"check\": \"normal control\", \"actual\": [\"18:00:00:00\", \"18:00:01:01\", \"03:00:31:01\", \"03:00:33:02\"], \"expected\": [\"18:00:00:00\", \"18:00:01:01\", \"03:00:31:01\", \"03:00:33:02\"], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":39.505,"exit_code":1,"observations":[{"actual":["23:59:59:05","00:00:00:11","00:00:00:12"],"check":"regression: inter-clip gap","expected":["23:59:59:00","00:00:00:06","00:00:00:07"],"passed":false},{"actual":["23:59:50:25","15:00:21:21","16:00:51:22"],"check":"regression variant: inter-clip gap","expected":["23:59:50:00","15:00:20:26","16:00:50:27"],"passed":false},{"actual":["18:00:01:00","17:00:03:01","02:00:14:02","02:00:16:13","02:00:16:24"],"check":"partial repair probe: inter-clip gap","expected":["18:00:00:00","17:00:02:01","02:00:13:02","02:00:15:13","02:00:15:24"],"passed":false},{"actual":["23:59:50:25","23:59:53:01","15:00:23:27","15:00:24:28"],"check":"partial repair variant: inter-clip gap","expected":["23:59:50:00","23:59:52:06","15:00:23:02","15:00:24:03"],"passed":false},{"actual":["18:00:00:00","18:00:01:00"],"check":"boundary control","expected":["18:00:00:00","18:00:01:00"],"passed":true},{"actual":["00:00:00:00"],"check":"normal control","expected":["00:00:00:00"],"passed":true},{"actual":["23:59:50:00"],"check":"normal control","expected":["23:59:50:00"],"passed":true},{"actual":["18:00:00:00","18:00:01:01","03:00:31:01","03:00:33:02"],"check":"normal control","expected":["18:00:00:00","18:00:01:01","03:00:31:01","03:00:33:02"],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: inter-clip gap\", \"actual\": [\"23:59:59:05\", \"00:00:00:11\", \"00:00:00:12\"], \"expected\": [\"23:59:59:00\", \"00:00:00:06\", \"00:00:00:07\"], \"passed\": false}, {\"check\": \"regression variant: inter-clip gap\", \"actual\": [\"23:59:50:25\", \"15:00:21:21\", \"16:00:51:22\"], \"expected\": [\"23:59:50:00\", \"15:00:20:26\", \"16:00:50:27\"], \"passed\": false}, {\"check\": \"partial repair probe: inter-clip gap\", \"actual\": [\"18:00:01:00\", \"17:00:03:01\", \"02:00:14:02\", \"02:00:16:13\", \"02:00:16:24\"], \"expected\": [\"18:00:00:00\", \"17:00:02:01\", \"02:00:13:02\", \"02:00:15:13\", \"02:00:15:24\"], \"passed\": false}, {\"check\": \"partial repair variant: inter-clip gap\", \"actual\": [\"23:59:50:25\", \"23:59:53:01\", \"15:00:23:27\", \"15:00:24:28\"], \"expected\": [\"23:59:50:00\", \"23:59:52:06\", \"15:00:23:02\", \"15:00:24:03\"], \"passed\": false}, {\"check\": \"boundary control\", \"actual\": [\"18:00:00:00\", \"18:00:01:00\"], \"expected\": [\"18:00:00:00\", \"18:00:01:00\"], \"passed\": true}, {\"check\": \"normal control\", \"actual\": [\"00:00:00:00\"], \"expected\": [\"00:00:00:00\"], \"passed\": true}, {\"check\": \"normal control\", \"actual\": [\"23:59:50:00\"], \"expected\": [\"23:59:50:00\"], \"passed\": true}, {\"check\": \"normal control\", \"actual\": [\"18:00:00:00\", \"18:00:01:01\", \"03:00:31:01\", \"03:00:33:02\"], \"expected\": [\"18:00:00:00\", \"18:00:01:01\", \"03:00:31:01\", \"03:00:33:02\"], \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":39.175,"exit_code":0,"observations":[{"actual":["23:59:59:00","00:00:00:06","00:00:00:07"],"check":"regression: inter-clip gap","expected":["23:59:59:00","00:00:00:06","00:00:00:07"],"passed":true},{"actual":["23:59:50:00","15:00:20:26","16:00:50:27"],"check":"regression variant: inter-clip gap","expected":["23:59:50:00","15:00:20:26","16:00:50:27"],"passed":true},{"actual":["18:00:00:00","17:00:02:01","02:00:13:02","02:00:15:13","02:00:15:24"],"check":"partial repair probe: inter-clip gap","expected":["18:00:00:00","17:00:02:01","02:00:13:02","02:00:15:13","02:00:15:24"],"passed":true},{"actual":["23:59:50:00","23:59:52:06","15:00:23:02","15:00:24:03"],"check":"partial repair variant: inter-clip gap","expected":["23:59:50:00","23:59:52:06","15:00:23:02","15:00:24:03"],"passed":true},{"actual":["18:00:00:00","18:00:01:00"],"check":"boundary control","expected":["18:00:00:00","18:00:01:00"],"passed":true},{"actual":["00:00:00:00"],"check":"normal control","expected":["00:00:00:00"],"passed":true},{"actual":["23:59:50:00"],"check":"normal control","expected":["23:59:50:00"],"passed":true},{"actual":["18:00:00:00","18:00:01:01","03:00:31:01","03:00:33:02"],"check":"normal control","expected":["18:00:00:00","18:00:01:01","03:00:31:01","03:00:33:02"],"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: inter-clip gap\", \"actual\": [\"23:59:59:00\", \"00:00:00:06\", \"00:00:00:07\"], \"expected\": [\"23:59:59:00\", \"00:00:00:06\", \"00:00:00:07\"], \"passed\": true}, {\"check\": \"regression variant: inter-clip gap\", \"actual\": [\"23:59:50:00\", \"15:00:20:26\", \"16:00:50:27\"], \"expected\": [\"23:59:50:00\", \"15:00:20:26\", \"16:00:50:27\"], \"passed\": true}, {\"check\": \"partial repair probe: inter-clip gap\", \"actual\": [\"18:00:00:00\", \"17:00:02:01\", \"02:00:13:02\", \"02:00:15:13\", \"02:00:15:24\"], \"expected\": [\"18:00:00:00\", \"17:00:02:01\", \"02:00:13:02\", \"02:00:15:13\", \"02:00:15:24\"], \"passed\": true}, {\"check\": \"partial repair variant: inter-clip gap\", \"actual\": [\"23:59:50:00\", \"23:59:52:06\", \"15:00:23:02\", \"15:00:24:03\"], \"expected\": [\"23:59:50:00\", \"23:59:52:06\", \"15:00:23:02\", \"15:00:24:03\"], \"passed\": true}, {\"check\": \"boundary control\", \"actual\": [\"18:00:00:00\", \"18:00:01:00\"], \"expected\": [\"18:00:00:00\", \"18:00:01:00\"], \"passed\": true}, {\"check\": \"normal control\", \"actual\": [\"00:00:00:00\"], \"expected\": [\"00:00:00:00\"], \"passed\": true}, {\"check\": \"normal control\", \"actual\": [\"23:59:50:00\"], \"expected\": [\"23:59:50:00\"], \"passed\": true}, {\"check\": \"normal control\", \"actual\": [\"18:00:00:00\", \"18:00:01:01\", \"03:00:31:01\", \"03:00:33:02\"], \"expected\": [\"18:00:00:00\", \"18:00:01:01\", \"03:00:31:01\", \"03:00:33:02\"], \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}