Video: VP9 1920x1200 60fps (ffmpeg -vf scale=1920:-1:flags=neighbor -c:v libvpx-vp9 -b:v 0 -crf 33 -threads 12 -speed 4 -tile-columns 6 -frame-parallel 1 -pix_fmt yuv420p)
Audio: OPUS 48kHz 96kbit/s (ffmpeg -af aresample=resampler=soxr -ar 48000 -c:a libopus)
Video: H.264 1920x1200 60fps (ffmpeg -vf scale=1920:-1:flags=neighbor -c:v libx264 -coder 1 -bf 2 -g 30 -crf 26 -profile:v high -pix_fmt yuv420p -tune grain -use_editlist false -movflags +faststart)
Audio: AAC-LC 48kHz (qaac --tvbr 91 --quality 2)
1280x800 videos:
lossless audio (FLAC 16bit 55467kHz): brambles.flac (13M)
lossless video (FFV1 640x400 60fps/FLAC 16bit 55467kHz) (WARNING huge file): brambles.mkv (980M)