The long-awaited multi-threaded FFmpeg command line feature has finally been merged into FFmpeg Git. This is a major improvement for the widely-used open-source project that is used in various industries for video transcoding. According to FFmpeg developers, this is one of the most complex changes made to the FFmpeg CLI in decades. The new code includes a thread-aware transcode scheduling infrastructure and separate encoding threads. This allows different components to run in parallel, resulting in potentially improved performance. Users are encouraged to test the new feature and report any issues to the FFmpeg Trac. Overall, this is an exciting development for FFmpeg.
https://www.phoronix.com/news/FFmpeg-CLI-MT-Merged