I tried to build with the 5 patches that Phyllis used. Everything is OK, no errors. Does the “0002-Make-Paralell...” patch perhaps serve to speed up compilation? It seemed faster to me, but I would need to do more testing. In ./configure, I tried adding “--with-vulkan” and, for the first time, it worked, and now CinGG sees my Vulkan decoder (even though it doesn't work with h264). Decoder h264 does not support device type vulkan. HW device init failed, using SW decode. NB: I have to use X11-OpenGL, otherwise Vulkan is not recognized. For the encoder, I have: /home/paz/cinelerra/cinelerra-5.1/thirdparty/ffmpeg-8.0/./ffmpeg -encoders | grep vulkan V....D av1_vulkan AV1 (Vulkan) (codec av1) V....D h264_vulkan H.264/AVC (Vulkan) (codec h264) V....D hevc_vulkan H.265/HEVC (Vulkan) (codec hevc) When I try to render, I don't see any presets with Vulkan. Do I have to create them myself? Finally, what tests should I run for “yuva16”?