The Video Playback article  suggests to increase kern.ipc.shmmax kern.ipc.shmall to the following values:
Are those values still relevant? I mean, those values probably vary from machine to machine.
Maybe instead of suggesting some arbitrary values we should encourage to increase those values and point to further documentation describing how to choose a good value.
Checking a VM with 1GB of RAM and a system with 128GB of ram, both have default values of:
As such I doubt this recommendation matters.