Might (even most likely!) break many other encoding devices! with such profile (wrongly named but still) cat /usr/share/cin/ffmpeg/video/ffv1_vulkan.mov mov hevc_vulkan cin_pix_fmt=nv12 cin_hw_device=vulkan #coder=0 #context=1 #g=1 level=4 strict=-2 and attached patch I finally got: root@slax:/dev/shm/tmp/cinelerra-goodguy-20260206/cinelerra-5.1# bin/cin Cinelerra Infinity - built: Feb 6 2026 06:54:53 git://git.cinelerra-gg.org/goodguy/cinelerra.git (c) 2006-2019 Heroine Virtual Ltd. by Adam Williams 2007-2020 mods for Cinelerra-GG by W.P.Morrow aka goodguy 2003-2017 mods for Cinelerra-CV by CinelerraCV team 2015-2026 mods for Cinelerra-GG by Cinelerra-GG team Libav version: Lavc62.11.100 Cinelerra is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. There is absolutely no warranty for Cinelerra. BC_DisplayInfo::gl_fb_config failed [Vulkan @ 0xc22e8c40] Supported layers: [Vulkan @ 0xc22e8c40] VK_LAYER_LUNARG_gfxreconstruct [Vulkan @ 0xc22e8c40] VK_LAYER_KHRONOS_validation [Vulkan @ 0xc22e8c40] VK_LAYER_KHRONOS_synchronization2 [Vulkan @ 0xc22e8c40] VK_LAYER_LUNARG_monitor [Vulkan @ 0xc22e8c40] VK_LAYER_KHRONOS_shader_object [Vulkan @ 0xc22e8c40] VK_LAYER_KHRONOS_timeline_semaphore [Vulkan @ 0xc22e8c40] VK_LAYER_LUNARG_api_dump [Vulkan @ 0xc22e8c40] VK_LAYER_KHRONOS_profiles [Vulkan @ 0xc22e8c40] VK_LAYER_LUNARG_screenshot [Vulkan @ 0xc22e8c40] GPU listing: [Vulkan @ 0xc22e8c40] 0: AMD Radeon RX 550 / 550 Series (RADV POLARIS12) (discrete) (0x699f) [Vulkan @ 0xc22e8c40] 1: llvmpipe (LLVM 20.1.3, 256 bits) (software) (0x0) [Vulkan @ 0xc22e8c40] Device 0 selected: AMD Radeon RX 550 / 550 Series (RADV POLARIS12) (discrete) (0x699f) [Vulkan @ 0xc22e8c40] Using device extension VK_KHR_push_descriptor [Vulkan @ 0xc22e8c40] Using device extension VK_EXT_descriptor_buffer [Vulkan @ 0xc22e8c40] Using device extension VK_EXT_physical_device_drm [Vulkan @ 0xc22e8c40] Using device extension VK_EXT_shader_atomic_float [Vulkan @ 0xc22e8c40] Using device extension VK_EXT_shader_object [Vulkan @ 0xc22e8c40] Using device extension VK_KHR_shader_subgroup_rotate [Vulkan @ 0xc22e8c40] Using device extension VK_KHR_shader_expect_assume [Vulkan @ 0xc22e8c40] Using device extension VK_KHR_external_memory_fd [Vulkan @ 0xc22e8c40] Using device extension VK_EXT_external_memory_dma_buf [Vulkan @ 0xc22e8c40] Using device extension VK_KHR_external_semaphore_fd [Vulkan @ 0xc22e8c40] Using device extension VK_EXT_external_memory_host [Vulkan @ 0xc22e8c40] Queue families: [Vulkan @ 0xc22e8c40] 0: graphics compute transfer sparse (queues: 1) [Vulkan @ 0xc22e8c40] 1: compute transfer sparse (queues: 4) [Vulkan @ 0xc22e8c40] 2: sparse (queues: 1) [Vulkan @ 0xc22e8c40] Using device: AMD Radeon RX 550 / 550 Series (RADV POLARIS12) [Vulkan @ 0xc22e8c40] Alignments: [Vulkan @ 0xc22e8c40] optimalBufferCopyRowPitchAlignment: 1 [Vulkan @ 0xc22e8c40] minMemoryMapAlignment: 4096 [Vulkan @ 0xc22e8c40] nonCoherentAtomSize: 64 [Vulkan @ 0xc22e8c40] minImportedHostPointerAlignment: 4096 [Vulkan @ 0xc22e8c40] Using queue family 0 (queues: 1) for graphics [Vulkan @ 0xc22e8c40] Using queue family 1 (queues: 4) for compute transfers type, inserting hwupload filter .. err: Error number 11 occurred detected 4 logical cores [hwupload @ 0xe493e480] A hardware device reference is required to upload frames to. Vulkan pixfmt! [hevc_vulkan @ 0xe4918340] Device does not support the VK_KHR_video_encode_queue extension! FFMPEG::open_encoder err: Функция не реализована int FFMPEG::open_encoder(const char*, const char*): open failed hevc_vulkan:/dev/shm/y4m_tut.mov Render::render_single: Session finished. Total excess of backups: -50 Session time: 0:00:24 Cpu time: user: 0:00:03.668 sys: 0:00:00.911 So, it goes deeper now?