{"abstract":"Timestamps exported with a period before the milliseconds are rejected as invalid.","category":"Subtitle cue timing","checks":9,"contract":"Parse an SRT timestamp HH:MM:SS,mmm to integer milliseconds. Hours have 2 or more digits, minutes and seconds are below 60, the fraction has 1 to 3 digits and is right-padded (\",5\" means 500 ms), \".\" is accepted as the separator, surrounding whitespace (including a CR from CRLF files) is ignored; invalid text returns None.","evaluation_group":"w2-subtitle-cue-timing-srt-parse","failed_approach":"Normalizing semicolons instead of periods still rejects the common period-separated export form.","family":"w2-subtitle-cue-timing-srt-parse-dot-separator-acceptance","id":"FA-77846","implementations":{"attempt":{"sha256":"d13f378fae52821a898e1b0fc3b0260c2afa96fd9228aab7ba126111c5940cd2","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(s):\n    s=s.strip()\n    parts=s.replace(';',',').split(',')\n    if len(parts)!=2: return None\n    hms,frac=parts\n    fields=hms.split(':')\n    if len(fields)!=3: return None\n    if not all(p.isdigit() for p in fields) or not frac.isdigit(): return None\n    if len(frac)>3: return None\n    h,mi,se=int(fields[0]),int(fields[1]),int(fields[2])\n    if mi>=60 or se>=60: return None\n    ms=int(frac.ljust(3,'0'))\n    return h*3600000+mi*60000+se*1000+ms\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: dot separator acceptance', ['01:02:03.004'], 3723004), ('regression variant: dot separator acceptance', ['100:59:42.001\\r'], 363582001), ('partial repair probe: dot separator acceptance', ['00:30:59;12'], None), ('partial repair variant: dot separator acceptance', [' 100:00:01.50\\r'], 360001500), ('boundary control', ['00:00:00,000'], 0), ('boundary control', ['00:60:00,000'], None), ('normal control', ['00:00:01,5'], 1500), ('normal control', ['100:00:00,000'], 360000000), ('normal control', ['00:61:00;5 \\r'], None)], [('regression: dot separator acceptance', ['99:00:00.500\\r'], 356400500), ('regression variant: dot separator acceptance', ['01:59:00.500\\t'], 7140500), ('partial repair probe: dot separator acceptance', ['00:59:00.000'], 3540000), ('partial repair variant: dot separator acceptance', ['123:59:59.000 \\r'], 446399000), ('boundary control', ['00:00:01,5'], 1500), ('boundary control', ['100:00:00,000'], 360000000), ('normal control', ['123:60:59,5'], None), ('normal control', ['99:00:59,001 \\r'], 356459001), ('normal control', [' 00:61:01;999\\r'], None)], [('regression: dot separator acceptance', ['00:59:00.000'], 3540000), ('regression variant: dot separator acceptance', [' 100:00:01.50\\r'], 360001500), ('partial repair probe: dot separator acceptance', [' 10:05:00.000'], 36300000), ('partial repair variant: dot separator acceptance', ['02:00:59;999'], None), ('boundary control', ['00:59:59,999\\r'], 3599999), ('boundary control', ['00:00:00,000'], 0), ('normal control', [' 00:00:60,12 '], None), ('normal control', [' 10:00:61.001\\r'], None), ('normal control', ['00:00:60,1234\\r'], None)], [('regression: dot separator acceptance', [' 10:05:00.000'], 36300000), ('regression variant: dot separator acceptance', ['123:59:59.000 \\r'], 446399000), ('partial repair probe: dot separator acceptance', [' 00:05:00.5 '], 300500), ('partial repair variant: dot separator acceptance', ['10:00:42;07'], None), ('boundary control', ['00:60:00,000'], None), ('boundary control', ['00:00:01,5'], 1500), ('normal control', ['00:00:60,07'], None), ('normal control', ['99:60:59,12 \\r'], None), ('normal control', ['100:60:60,999 '], None)], [('regression: dot separator acceptance', [' 00:05:00.5 '], 300500), ('regression variant: dot separator acceptance', ['123:05:01.12\\t'], 443101120), ('partial repair probe: dot separator acceptance', ['100:59:42.001\\r'], 363582001), ('partial repair variant: dot separator acceptance', ['00:00:42;07\\r'], None), ('boundary control', ['100:00:00,000'], 360000000), ('boundary control', ['00:59:59,999\\r'], 3599999), ('normal control', [' 10:60:61;999'], None), ('normal control', ['02:00:01,1234 \\r'], None), ('normal control', ['02:30:42,5\\t'], 9042500)]]\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":"3cdda36c0690b63447252b82cc0b3249e1209ce41813cb15ae5f17ac16c0554b","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(s):\n    s=s.strip()\n    parts=s.split(',')\n    if len(parts)!=2: return None\n    hms,frac=parts\n    fields=hms.split(':')\n    if len(fields)!=3: return None\n    if not all(p.isdigit() for p in fields) or not frac.isdigit(): return None\n    if len(frac)>3: return None\n    h,mi,se=int(fields[0]),int(fields[1]),int(fields[2])\n    if mi>=60 or se>=60: return None\n    ms=int(frac.ljust(3,'0'))\n    return h*3600000+mi*60000+se*1000+ms\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: dot separator acceptance', ['01:02:03.004'], 3723004), ('regression variant: dot separator acceptance', ['100:59:42.001\\r'], 363582001), ('partial repair probe: dot separator acceptance', ['00:30:59;12'], None), ('partial repair variant: dot separator acceptance', [' 100:00:01.50\\r'], 360001500), ('boundary control', ['00:00:00,000'], 0), ('boundary control', ['00:60:00,000'], None), ('normal control', ['00:00:01,5'], 1500), ('normal control', ['100:00:00,000'], 360000000), ('normal control', ['00:61:00;5 \\r'], None)], [('regression: dot separator acceptance', ['99:00:00.500\\r'], 356400500), ('regression variant: dot separator acceptance', ['01:59:00.500\\t'], 7140500), ('partial repair probe: dot separator acceptance', ['00:59:00.000'], 3540000), ('partial repair variant: dot separator acceptance', ['123:59:59.000 \\r'], 446399000), ('boundary control', ['00:00:01,5'], 1500), ('boundary control', ['100:00:00,000'], 360000000), ('normal control', ['123:60:59,5'], None), ('normal control', ['99:00:59,001 \\r'], 356459001), ('normal control', [' 00:61:01;999\\r'], None)], [('regression: dot separator acceptance', ['00:59:00.000'], 3540000), ('regression variant: dot separator acceptance', [' 100:00:01.50\\r'], 360001500), ('partial repair probe: dot separator acceptance', [' 10:05:00.000'], 36300000), ('partial repair variant: dot separator acceptance', ['02:00:59;999'], None), ('boundary control', ['00:59:59,999\\r'], 3599999), ('boundary control', ['00:00:00,000'], 0), ('normal control', [' 00:00:60,12 '], None), ('normal control', [' 10:00:61.001\\r'], None), ('normal control', ['00:00:60,1234\\r'], None)], [('regression: dot separator acceptance', [' 10:05:00.000'], 36300000), ('regression variant: dot separator acceptance', ['123:59:59.000 \\r'], 446399000), ('partial repair probe: dot separator acceptance', [' 00:05:00.5 '], 300500), ('partial repair variant: dot separator acceptance', ['10:00:42;07'], None), ('boundary control', ['00:60:00,000'], None), ('boundary control', ['00:00:01,5'], 1500), ('normal control', ['00:00:60,07'], None), ('normal control', ['99:60:59,12 \\r'], None), ('normal control', ['100:60:60,999 '], None)], [('regression: dot separator acceptance', [' 00:05:00.5 '], 300500), ('regression variant: dot separator acceptance', ['123:05:01.12\\t'], 443101120), ('partial repair probe: dot separator acceptance', ['100:59:42.001\\r'], 363582001), ('partial repair variant: dot separator acceptance', ['00:00:42;07\\r'], None), ('boundary control', ['100:00:00,000'], 360000000), ('boundary control', ['00:59:59,999\\r'], 3599999), ('normal control', [' 10:60:61;999'], None), ('normal control', ['02:00:01,1234 \\r'], None), ('normal control', ['02:30:42,5\\t'], 9042500)]]\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":"5db26b4702a6c344980c4e8fd336efb41fbf1a7a0f802b18b714894eedc9d12c","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(s):\n    s=s.strip()\n    parts=s.replace('.',',').split(',')\n    if len(parts)!=2: return None\n    hms,frac=parts\n    fields=hms.split(':')\n    if len(fields)!=3: return None\n    if not all(p.isdigit() for p in fields) or not frac.isdigit(): return None\n    if len(frac)>3: return None\n    h,mi,se=int(fields[0]),int(fields[1]),int(fields[2])\n    if mi>=60 or se>=60: return None\n    ms=int(frac.ljust(3,'0'))\n    return h*3600000+mi*60000+se*1000+ms\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: dot separator acceptance', ['01:02:03.004'], 3723004), ('regression variant: dot separator acceptance', ['100:59:42.001\\r'], 363582001), ('partial repair probe: dot separator acceptance', ['00:30:59;12'], None), ('partial repair variant: dot separator acceptance', [' 100:00:01.50\\r'], 360001500), ('boundary control', ['00:00:00,000'], 0), ('boundary control', ['00:60:00,000'], None), ('normal control', ['00:00:01,5'], 1500), ('normal control', ['100:00:00,000'], 360000000), ('normal control', ['00:61:00;5 \\r'], None)], [('regression: dot separator acceptance', ['99:00:00.500\\r'], 356400500), ('regression variant: dot separator acceptance', ['01:59:00.500\\t'], 7140500), ('partial repair probe: dot separator acceptance', ['00:59:00.000'], 3540000), ('partial repair variant: dot separator acceptance', ['123:59:59.000 \\r'], 446399000), ('boundary control', ['00:00:01,5'], 1500), ('boundary control', ['100:00:00,000'], 360000000), ('normal control', ['123:60:59,5'], None), ('normal control', ['99:00:59,001 \\r'], 356459001), ('normal control', [' 00:61:01;999\\r'], None)], [('regression: dot separator acceptance', ['00:59:00.000'], 3540000), ('regression variant: dot separator acceptance', [' 100:00:01.50\\r'], 360001500), ('partial repair probe: dot separator acceptance', [' 10:05:00.000'], 36300000), ('partial repair variant: dot separator acceptance', ['02:00:59;999'], None), ('boundary control', ['00:59:59,999\\r'], 3599999), ('boundary control', ['00:00:00,000'], 0), ('normal control', [' 00:00:60,12 '], None), ('normal control', [' 10:00:61.001\\r'], None), ('normal control', ['00:00:60,1234\\r'], None)], [('regression: dot separator acceptance', [' 10:05:00.000'], 36300000), ('regression variant: dot separator acceptance', ['123:59:59.000 \\r'], 446399000), ('partial repair probe: dot separator acceptance', [' 00:05:00.5 '], 300500), ('partial repair variant: dot separator acceptance', ['10:00:42;07'], None), ('boundary control', ['00:60:00,000'], None), ('boundary control', ['00:00:01,5'], 1500), ('normal control', ['00:00:60,07'], None), ('normal control', ['99:60:59,12 \\r'], None), ('normal control', ['100:60:60,999 '], None)], [('regression: dot separator acceptance', [' 00:05:00.5 '], 300500), ('regression variant: dot separator acceptance', ['123:05:01.12\\t'], 443101120), ('partial repair probe: dot separator acceptance', ['100:59:42.001\\r'], 363582001), ('partial repair variant: dot separator acceptance', ['00:00:42;07\\r'], None), ('boundary control', ['100:00:00,000'], 360000000), ('boundary control', ['00:59:59,999\\r'], 3599999), ('normal control', [' 10:60:61;999'], None), ('normal control', ['02:00:01,1234 \\r'], None), ('normal control', ['02:30:42,5\\t'], 9042500)]]\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 any subtitle 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-subtitle-cue-timing-srt-parse-dot-separator-acceptance","generated_at":"2026-09-29T14:49:29.741984+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Subtitle timing defects shift, hide or overlap captions that viewers depend on for comprehension and accessibility.","repair":"Normalize '.' to ',' before splitting the seconds from the fraction.","root_cause":"The separator normalization step is missing, so only the comma form splits into two parts.","sha256":"298603c9dc6f57dafeba2a63685ce30d5c5c754c97c72851e38694e6bdddb1d2","title":"SRT timestamp parsing: dot separator acceptance · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":40.997,"exit_code":1,"observations":[{"actual":null,"check":"regression: dot separator acceptance","expected":3723004,"passed":false},{"actual":null,"check":"regression variant: dot separator acceptance","expected":363582001,"passed":false},{"actual":1859120,"check":"partial repair probe: dot separator acceptance","expected":null,"passed":false},{"actual":null,"check":"partial repair variant: dot separator acceptance","expected":360001500,"passed":false},{"actual":0,"check":"boundary control","expected":0,"passed":true},{"actual":null,"check":"boundary control","expected":null,"passed":true},{"actual":1500,"check":"normal control","expected":1500,"passed":true},{"actual":360000000,"check":"normal control","expected":360000000,"passed":true},{"actual":null,"check":"normal control","expected":null,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: dot separator acceptance\", \"actual\": null, \"expected\": 3723004, \"passed\": false}, {\"check\": \"regression variant: dot separator acceptance\", \"actual\": null, \"expected\": 363582001, \"passed\": false}, {\"check\": \"partial repair probe: dot separator acceptance\", \"actual\": 1859120, \"expected\": null, \"passed\": false}, {\"check\": \"partial repair variant: dot separator acceptance\", \"actual\": null, \"expected\": 360001500, \"passed\": false}, {\"check\": \"boundary control\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"boundary control\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"normal control\", \"actual\": 1500, \"expected\": 1500, \"passed\": true}, {\"check\": \"normal control\", \"actual\": 360000000, \"expected\": 360000000, \"passed\": true}, {\"check\": \"normal control\", \"actual\": null, \"expected\": null, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":42.931,"exit_code":1,"observations":[{"actual":null,"check":"regression: dot separator acceptance","expected":3723004,"passed":false},{"actual":null,"check":"regression variant: dot separator acceptance","expected":363582001,"passed":false},{"actual":null,"check":"partial repair probe: dot separator acceptance","expected":null,"passed":true},{"actual":null,"check":"partial repair variant: dot separator acceptance","expected":360001500,"passed":false},{"actual":0,"check":"boundary control","expected":0,"passed":true},{"actual":null,"check":"boundary control","expected":null,"passed":true},{"actual":1500,"check":"normal control","expected":1500,"passed":true},{"actual":360000000,"check":"normal control","expected":360000000,"passed":true},{"actual":null,"check":"normal control","expected":null,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: dot separator acceptance\", \"actual\": null, \"expected\": 3723004, \"passed\": false}, {\"check\": \"regression variant: dot separator acceptance\", \"actual\": null, \"expected\": 363582001, \"passed\": false}, {\"check\": \"partial repair probe: dot separator acceptance\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"partial repair variant: dot separator acceptance\", \"actual\": null, \"expected\": 360001500, \"passed\": false}, {\"check\": \"boundary control\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"boundary control\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"normal control\", \"actual\": 1500, \"expected\": 1500, \"passed\": true}, {\"check\": \"normal control\", \"actual\": 360000000, \"expected\": 360000000, \"passed\": true}, {\"check\": \"normal control\", \"actual\": null, \"expected\": null, \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":44.498,"exit_code":0,"observations":[{"actual":3723004,"check":"regression: dot separator acceptance","expected":3723004,"passed":true},{"actual":363582001,"check":"regression variant: dot separator acceptance","expected":363582001,"passed":true},{"actual":null,"check":"partial repair probe: dot separator acceptance","expected":null,"passed":true},{"actual":360001500,"check":"partial repair variant: dot separator acceptance","expected":360001500,"passed":true},{"actual":0,"check":"boundary control","expected":0,"passed":true},{"actual":null,"check":"boundary control","expected":null,"passed":true},{"actual":1500,"check":"normal control","expected":1500,"passed":true},{"actual":360000000,"check":"normal control","expected":360000000,"passed":true},{"actual":null,"check":"normal control","expected":null,"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: dot separator acceptance\", \"actual\": 3723004, \"expected\": 3723004, \"passed\": true}, {\"check\": \"regression variant: dot separator acceptance\", \"actual\": 363582001, \"expected\": 363582001, \"passed\": true}, {\"check\": \"partial repair probe: dot separator acceptance\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"partial repair variant: dot separator acceptance\", \"actual\": 360001500, \"expected\": 360001500, \"passed\": true}, {\"check\": \"boundary control\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"boundary control\", \"actual\": null, \"expected\": null, \"passed\": true}, {\"check\": \"normal control\", \"actual\": 1500, \"expected\": 1500, \"passed\": true}, {\"check\": \"normal control\", \"actual\": 360000000, \"expected\": 360000000, \"passed\": true}, {\"check\": \"normal control\", \"actual\": null, \"expected\": null, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}