Files
libva-multiplanar/phase0_evidence/2026-05-04/mpv_vaapi_2026-05-04.strace.138297
marfrit f15ba8b147 Phase 0 in-session re-verification: 2026-04-26 picture holds
Re-executed deliverables #1 (verify failure-mode finding) and #4 (capture
contract trace) on ohm against the substrate that's actually deployed —
not the libva-v4l2-request-fourier git fork master, but the
libva-v4l2-request-ohm-gl-fix package built on boltzmann from the Step 1
18-patch series.

Result: vainfo enumerates 7 H.264 + 2 MPEG-2 profiles cleanly; mpv
--hwdec=vaapi-copy decodes 68 H.264 frames end-to-end through the full
V4L2-stateless contract on hantro /dev/video1 + /dev/media0. Zero
EINVAL/EAGAIN/EBUSY on the request-API path. No rig drift requiring
Phase 2 loopback.

Inventory finding documented: the git fork at e8c3937 is a pre-Step-1
substrate; rebuilding from it as-is would be a regression. Step 1
reconciliation (deliverable #2) is upstream of any future build-from-fork
action.

Rig caveat captured: --hwdec=vaapi requires a real VO; --hwdec=vaapi-copy
is the headless-safe alternative for SSH-driven test rigs.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-04 09:16:38 +00:00

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1777884987.347100 mmap(0xffff80000000, 67108864, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff80000000
1777884987.348643 mmap(0x4dc76478c000, 131072, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4dc76478c000
1777884987.351180 mmap(0x4dc7647ec000, 131072, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4dc7647ec000
1777884987.387563 mmap(0xffff9f9a0000, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff95910000
1777884987.387980 mmap(0xffff9d220000, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff95910000
1777884987.389317 mmap(0xffffa2e20000, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff95910000
1777884987.389574 mmap(0xffffa3160000, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff95910000
1777884987.390920 mmap(0xffffa1a50000, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff95910000
1777884987.391193 mmap(0xffff9ebd0000, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffff95910000
1777884987.391389 mmap(0xffffa4dc0000, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffffa4dc0000
1777884987.392118 mmap(0x4dc7688cc000, 131072, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4dc7688cc000
1777884987.411360 +++ exited with 0 +++