VIDEOWRITER_PROP_HW_ACCELERATION_USE_OPENCL top-level constant
int
const VIDEOWRITER_PROP_HW_ACCELERATION_USE_OPENCL
(open-only) If non-zero, create new OpenCL context and bind it to current thread. The OpenCL context created with Video Acceleration context attached it (if not attached yet) for optimized GPU data copy between cv::UMat and HW accelerated encoder.
Implementation
const int VIDEOWRITER_PROP_HW_ACCELERATION_USE_OPENCL = 8;