Source: https://www.openshot.org/blog/2020/02/08/openshot-250-released-video-editing-hardware-acceleration/
Perhaps one of the most exciting changes in OpenShot 2.5.0 is our experimental support for hardware acceleration. You will see some new options available if you have a supported encoder/decoder. Many graphics cards come with the ability to encode and decode video data without using the CPU. This can result in a huge performance improvement on some systems, but also depends on the input and output formats, and many other factors. For example, if you are using only MP4/H.264 input files, and your graphics card is supported, it can help OpenShot decode the pixel data from the video, and on the flip side, encode the pixel data back into a video. This can increase performance by up to 30-40%, just depending on all the various factors.
