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av_hwframe_transfer_data() is a full GPU<->host frame copy that ran on every hwaccel decoded/encoded frame while holding the GIL. Wrap call sites, folding av_hwframe_get_buffer() into the upload's region since it blocks when the surface pool is exhausted.
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av_hwframe_transfer_data() is a full GPU<->host frame copy that ran on every hwaccel decoded/encoded frame while holding the GIL. Wrap call sites, folding av_hwframe_get_buffer() into the upload's region since it blocks when the surface pool is exhausted.