I found this thread while looking at av1 parameters..<div><br></div><div><a href="https://stackoverflow.com/questions/41372045/vp9-encoding-limited-to-4-threads">https://stackoverflow.com/questions/41372045/vp9-encoding-limited-to-4-threads</a></div><div><br></div><div>====</div><div>Apparently since ffmpeg 3.3/libvpx 1.6.2, there is now support -row-mt=1 option which provides better encoding parallelization and more than 4 threads for 1080p content. Threadripper guys go nuts! - <a href="http://groups.google.com/a/webmproject.org/forum/#!topic/codec-devel/">groups.google.com/a/webmproject.org/forum/#!topic/codec-devel/</a>… – Programster Oct 29 &#39;17 at 10:15 </div><div><br></div><div>===</div><div>As some people in comments and below have already commented, more recent versions of libvpx support -row-mt 1 to enable tile row multi-threading. </div><div><br></div><div>===</div><div><br></div><div>we use libvpx 1.8.2 / ffmpeg 4.3 so it should be applicable to us</div><div><br></div><div>can anyone test few vp9 profiles modified with this parameter? (on high-cpu machines) </div><div><br></div><div><br></div>