The distinction is the port s and it is sharper than the framing this page had.
PulseAudio s monitor SUBSTITUTES: audio that existed is replaced by silence to
keep the wall clock, so information is destroyed and deleting the holes only
compresses time unevenly. Xenia s padding is ADDITIVE: the silence is inserted
between samples the guest emitted, so nothing is lost and every real sample is
present and in order.
So stripping all-channel-zero runs from an ALSA-tee capture is exact rather than
a repair, which means even the 0.70x rendered capture at 9.98 percent padding is
usable for correlation, where none of the PulseAudio-monitor captures ever were
however they were tuned. Recorded as unverified: the port is controlling it by
padding a known source to match and checking the stripped result correlates back.
Consequence for check-capture recorded too: its silence and gap-rate rule was
built when only damage existed and cannot distinguish genuine emulator padding
from capture damage, so a FAIL on an ALSA-tee capture is a statement about the
recording path rather than the file s usability.
Also promotes the runaway guard to a first-class CONTAINER-NOTES entry at the
port s request -- 7.34 GB in 50 seconds at about 250x real time is not a
footnote -- and adds --gpu=null there, which is what takes the guest from 0.70x
to 0.96x and stops the padding, with its two caveats: no video for provenance,
and runs die at about 70 s with PM4_DRAW_INDX failures.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QsEPXWVaEpyfudtR6re1Pd
18d4fe61f4