3f945808d6
Closes the last open question on the voice regions: why one cue s byte span decodes to ~2.6x the movie s length. The port measured, with controls including a cross-movie negative, that a region s leading chunk is the TAIL of the full-length chunk that follows it -- r = 0.998 at a lag that puts it flush against that chunk s end, residual 16.7 dB down over 84.5 s. They withdrew their own earlier 0.768, which came from a search that scored best on the boundary of its own lag range. Checked it here by an independent route that needs no decoder. If the leading chunk is the tail of a full-length first stream, the whole leading stream should be one complete take of chunk 1 s duration. For ADV: 504464 + 808304 = 1312768 B at chunk 0 s byte rate of 9559.7 B/s is 137.323 s, against chunk 1 s measured 137.324 s. One millisecond over 137 seconds, from byte rates rather than from envelope correlation. And the byte structure settles the shape disc-wide. Counting stream starts inside every inter-descriptor span: 258 hold exactly 1 stream, 28 hold exactly 3, and nothing holds 2 or any other number. All 20 spans over 1.5 MB are 3-stream. The 95 movie regions decompose 70 + 8 + 17, and the 8 are independently the same 8 the first census found as bank-header-with-3-chunks. So 359 s = 84.55 + 137.32 + 137.32: three presentations of one take, the first clipped by resolve_movie_voice_region s own 1.5 MB guard. Consequences recorded for the port: dropping the leading chunk is removing a duplicate rather than truncating, so the hedge is lifted; but summing chunk 1 and chunk 2 is wrong, because they are the same take at different gain, not two stems. Take one stream. Also flags a coincidence I nearly built on: the 504464 B constant is structural, not proportional -- ADV s proportional prediction lands within 8 bytes of it and S00A s is 4305 B out. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QsEPXWVaEpyfudtR6re1Pd
56 lines
5.4 KiB
Plaintext
56 lines
5.4 KiB
Plaintext
registry: 4280 cue names, 4280 distinct ids
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scanning dat/sound 421739888..537953648 (116.2 MB)
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287 trailer descriptors found
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of those, 287 carry an id the registry names, 0 do not
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leading span -> owning cue
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ADV lead 808304 B bracketed by desc@Some((433425776, 1528)) .. desc@Some((437044592, 1600)) owner VOICE_ADV [movie cue]
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S00A lead 1324400 B bracketed by desc@Some((452294000, 1500)) .. desc@Some((455499120, 1501)) owner VOICE_S00A [movie cue]
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S01A lead 1154416 B bracketed by desc@Some((455499120, 1501)) .. desc@Some((460117360, 1502)) owner VOICE_S01A [movie cue]
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S02B lead 431472 B bracketed by desc@Some((461518192, 1503)) .. desc@Some((463838576, 1504)) owner VOICE_S02B [movie cue]
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S02C lead 1869168 B bracketed by desc@Some((463838576, 1504)) .. desc@Some((469970288, 1506)) owner VOICE_S02C [movie cue]
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S03A lead 253296 B bracketed by desc@Some((469970288, 1506)) .. desc@Some((472020336, 1507)) owner VOICE_S03A [movie cue]
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S04B lead 556400 B bracketed by desc@Some((480003440, 1508)) .. desc@Some((482938224, 1509)) owner VOICE_S04B [movie cue]
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S06A lead 351600 B bracketed by desc@Some((483433840, 1510)) .. desc@Some((485457264, 1511)) owner VOICE_S06A [movie cue]
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S06B lead 607600 B bracketed by desc@Some((485457264, 1511)) .. desc@Some((488908144, 1512)) owner VOICE_S06B [movie cue]
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S07A lead 505200 B bracketed by desc@Some((488908144, 1512)) .. desc@Some((491443568, 1513)) owner VOICE_S07A [movie cue]
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S09B lead 177520 B bracketed by desc@Some((491634032, 1514)) .. desc@Some((493743472, 1515)) owner VOICE_S09B [movie cue]
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S11C lead 742768 B bracketed by desc@Some((502173040, 1517)) .. desc@Some((505619824, 1518)) owner VOICE_S11C [movie cue]
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S12C lead 1844592 B bracketed by desc@Some((506262896, 1520)) .. desc@Some((512406896, 1521)) owner VOICE_S12C [movie cue]
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S13A lead 402800 B bracketed by desc@Some((512406896, 1521)) .. desc@Some((514874736, 1522)) owner VOICE_S13A [movie cue]
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S14A lead 1817968 B bracketed by desc@Some((515278192, 1523)) .. desc@Some((521794928, 1524)) owner VOICE_S14A [movie cue]
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S15A lead 255344 B bracketed by desc@Some((521794928, 1524)) .. desc@Some((524309872, 1525)) owner VOICE_S15A [movie cue]
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S15C lead 931184 B bracketed by desc@Some((525626736, 1526)) .. desc@Some((529565040, 1527)) owner VOICE_S15C [movie cue]
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verdicts: {"movie cue": 17}
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cue span vs the 1.5 MB guard, and what the region actually starts at:
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ADV true cue span 3618816 B (> guard: true) region starts at 433930240, true start 433425776 -> 504464 B of the cue's own audio is OUTSIDE the region
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S00A true cue span 3205120 B (> guard: true) region starts at 452798464, true start 452294000 -> 504464 B of the cue's own audio is OUTSIDE the region
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S01A true cue span 4618240 B (> guard: true) region starts at 456003584, true start 455499120 -> 504464 B of the cue's own audio is OUTSIDE the region
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S02B true cue span 2320384 B (> guard: true) region starts at 462022656, true start 461518192 -> 504464 B of the cue's own audio is OUTSIDE the region
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S02C true cue span 6131712 B (> guard: true) region starts at 464343040, true start 463838576 -> 504464 B of the cue's own audio is OUTSIDE the region
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S03A true cue span 2050048 B (> guard: true) region starts at 470474752, true start 469970288 -> 504464 B of the cue's own audio is OUTSIDE the region
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S04B true cue span 2934784 B (> guard: true) region starts at 480507904, true start 480003440 -> 504464 B of the cue's own audio is OUTSIDE the region
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S06A true cue span 2023424 B (> guard: true) region starts at 483938304, true start 483433840 -> 504464 B of the cue's own audio is OUTSIDE the region
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S06B true cue span 3450880 B (> guard: true) region starts at 485961728, true start 485457264 -> 504464 B of the cue's own audio is OUTSIDE the region
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S07A true cue span 2535424 B (> guard: true) region starts at 489412608, true start 488908144 -> 504464 B of the cue's own audio is OUTSIDE the region
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S09B true cue span 2109440 B (> guard: true) region starts at 492138496, true start 491634032 -> 504464 B of the cue's own audio is OUTSIDE the region
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S11C true cue span 3446784 B (> guard: true) region starts at 502677504, true start 502173040 -> 504464 B of the cue's own audio is OUTSIDE the region
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S12C true cue span 6144000 B (> guard: true) region starts at 506767360, true start 506262896 -> 504464 B of the cue's own audio is OUTSIDE the region
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S13A true cue span 2467840 B (> guard: true) region starts at 512911360, true start 512406896 -> 504464 B of the cue's own audio is OUTSIDE the region
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S14A true cue span 6516736 B (> guard: true) region starts at 515782656, true start 515278192 -> 504464 B of the cue's own audio is OUTSIDE the region
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S15A true cue span 2514944 B (> guard: true) region starts at 522299392, true start 521794928 -> 504464 B of the cue's own audio is OUTSIDE the region
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S15C true cue span 3938304 B (> guard: true) region starts at 526131200, true start 525626736 -> 504464 B of the cue's own audio is OUTSIDE the region
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cues over the 1.5 MB guard: 17, of which stream-opening: 17
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cues under the guard: 78, of which stream-opening: 0
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stream starts inside each cue's TRUE span (desc(N-1)..desc(N)):
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all inter-descriptor spans: {1: 258, 3: 28}
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spans >= 1.5 MB (the long cues): {3: 20}
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