The invention relates to a computer-implemented method for reducing video latency and computer program product thereto for a computer video processing system. Two separate threads, an input thread and an output thread, are created and configured to run simultaneously and independently from each other. The input thread is configured to process video input frames that may be split into a plurality of input slices. The output thread is configured to process video output frames. The video output frames may also be split into a plurality of output slices.