DRM instead of X11, to use a non-Intel GPU for rendering but still use
Quick Sync (by giving e.g. “--va-display /dev/dri/renderD128”).
- - Two or more Blackmagic USB3 cards, either HDMI or SDI. These are driven
- through the “bmusb” driver embedded in bmusb/, using libusb-1.0.
+ - Two or more Blackmagic USB3 or PCI cards, either HDMI or SDI.
+ The PCI cards need Blackmagic's own drivers installed. The USB3 cards
+ are driven through the “bmusb” driver embedded in bmusb/, using libusb-1.0.
Note that you will want a recent Linux kernel to avoid LPM (link power
management) and bandwidth allocation issues with USB3.