fastflix.org
FastFlix is a free GUI for encoding videos, working with FFmpeg and a variety of software and hardware encoders. Software encoder support includes x265, x264, rav1e, AOM AV1, SVT AV1, VP9 and VVC. Hardware encoders require appropriate hardware, and most Nvidia, Intel and AMD encoders use rigaya's encoders that must be downloaded separately and linked in the settings panel. FFmpeg version 4.3 or greater is required.