I think: GPU intel (internal) ---> vaapi GPU NVIDIA AMD (external) ---> vdpau Nvidia Optimus /Bumbelebee ---> ? (I do not use it) -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.cinelerra-gg.org/pipermail/cin/attachments/20190425/33cc6fa0/attachment.html>