This is the best summary I could come up with:
The long-in-development work for a fully-functional multi-threaded FFmpeg command line has been merged!
FFmpeg is widely-used throughout many industries for video transcoding and in today's many-core world this is a terrific improvement for this key open-source project.
The patches include adding the thread-aware transcode scheduling infrastructure, moving encoding to a separate thread, and various other low-level changes.
Change the main loop and every component (demuxers, decoders, filters, encoders, muxers) to use the previously added transcode scheduler.
There's a recent presentation on this work by developer Anton Khirnov.
It's terrific seeing this merged and will be interesting to see the performance impact in practice.
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