The 5.1 reading of a voice cue s three concurrent streams was recorded here as a
hypothesis with counter-evidence attached. It is now answered, by the port
fitting the disc s decoded streams against a clean capture of the game s own
6-channel output, with the instrument controlled first (known-present margin
+0.248, known-absent +0.005).
Speech-band margins put streams 2 and 3 at +0.305 and +0.307 on FC, r = 0.989,
above the known-present control, while stream 1 sits in the noise on every
channel. The low band mirrors it exactly: the movie bed at 0.76 to 0.84 on the
four corners against 0.32 on FC. Dialogue in the centre, bed in the corners.
The hypothesis was right for a reason the file could never have supplied.
ChannelMask reads 0x0002 on all three streams, so the header is not merely
unhelpful, it is actively misleading -- refusing to call it 5.1 from the header
was correct, and the oracle answered what the header could not.
Three limits recorded as the measurer stated them: streams 2 and 3 are
indistinguishable to this instrument, so no rule for choosing between them is
vindicated; the one-of-three-streams warning stands, since nothing says what
streams 1 and 3 contribute; and the reach is 59.7 s of a 137 s movie, one run,
one asset.
Also records the capture that would strengthen it most and why it is not taken:
S00A rather than a longer ADV, because its second full-length stream is digital
silence where ADV s is a 0.60x copy, so a structurally different movie would
agree. Reaching it needs a driven rendered run -- S00A starts about 4.5 s after A
on the save slot -- so it cannot use --gpu=null and will carry the additive
padding.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QsEPXWVaEpyfudtR6re1Pd
8841fe9c91