vd_lavc: derive hwdec surface pool size from VO requirements - #18309
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VOs can hold more frames than the requested lookahead. vo_gpu_next's pl_queue retains past frames for the interpolation mixing window. Let VOs declare the total number of frames they may reference at the same time, so fixed hwdec surface pools can be sized accordingly.
Change --hwdec-extra-frames default to auto, which sizes fixed hw frame pools from the number of frames the VO declares to reference, instead of a static guess. Fixes pool exhaustion with e.g. --interpolation and a tscale filter with larger radius. Fixes: mpv-player#18205
philipl
approved these changes
Jul 28, 2026
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