-i C:\\vid\\01 - Orphan Bird.mp3 -c:v:0.1 libvpx-vp9 -pass 1 -lossless 1 -threads 8 -speed 4 -tile-columns 6 -frame-parallel 1 -an -f webm C:/vid/temp/null
-i C:\\vid\\01 - Orphan Bird.mp3 -c:v:0.1 libvpx-vp9 -pass 2 -lossless 1 -threads 8 -speed 2 -tile-columns 6 -frame-parallel 1 -auto-alt-ref 1 -lag-in-frames 25 -c:a:0.0 copy -f webm C:\\vid\\01 - Orphan Bird.webm