The prod iGPU has no VC-1 Advanced decode ("No support for codec vc1 profile 3"), so every VC-1
session died on the GPU and fell back to libx264, which needs ~17 s for the three warm-up segments:
a start or a seek took ~19.5 s. VC-1, XviD and DivX now take CPU decode -> hwupload -> h264_vaapi
(three segments in 5.5 s for a 1080p VC-1 remux, measured on prod hardware with this argv).
The transcode_hw facet now says whether the GPU encodes: VC-1/XviD/DivX count, and so does an HDR
film (the OpenCL tonemap runs on the GPU; the facet said software). Migration 0119 rewrites the
stored facet and re-queues 10-bit items for the HDR probe.
peter
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