scale_opencl does not support rgba output in this jellyfin-ffmpeg build.
Rewrite the OpenCL kernel to accept and emit NV12 planes directly
(src_y, src_uv, dst_y, dst_uv) doing YCbCr↔RGB conversion internally.
Remove the scale_opencl=format=rgba and scale_opencl=format=nv12
wrappers from GetCrtShaderOclFilters — program_opencl alone is enough.
VAAPI decoder path: hwdownload+hwupload to QSV (safe; program_opencl
creates new output frames without a VAAPI reverse link).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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