Similar to Terje, using system ffmpeg I get his same result and error (I have amd graphics). I do not find the extension "VK_KHR_video_decode_queue" in "vulkaninfo". I see in https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_KHR_vid... the description: "This extension builds upon the VK_KHR_video_queue extension by adding common APIs specific to video decoding and thus enabling implementations to expose queue families supporting video decode operations. More specifically, it adds video decode specific capabilities and a new command buffer command that allows recording video decode operations against a video session. This extension is to be used in conjunction with other codec specific video decode extensions that enable decoding video sequences of specific video compression standards." In CinGG .../thirdparty/makefile I find no reference to "vulkan", "video" and "decode". Using "CIN_HW_DEV=vulkan /home/paz/cinelerra5/cinelerra-5.1/bin/cin" With mxf video: Decoder dnxhd does not support device type vulkan. HW device init failed, using SW decode. With h264 video: Unknown HW surface format: vulkan Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. FFStream::decode: avcodec_send_packet failed. file:/home/paz/video_editing/free_video/bbb_sunflower_1080p_30fps_normal.mp4 err: Invalid data found when processing input FFStream::decode: failed HW device init failed, using SW decode. CinGG compile with ffmpeg.git: ( ./configure don't recognize "--enable-vulkan") Without CIN_HW_DEV=vulkan /home/paz/cinelerra5/cinelerra-5.1/bin/cin: No message to terminal during playback. With CIN_HW_DEV=vulkan /home/paz/cinelerra5/cinelerra-5.1/bin/cin: Same error: Unknown HW surface format: vulkan Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. Failed to get HW surface format. FFStream::decode: avcodec_send_packet failed. file:/home/paz/video_editing/free_video/bbb_sunflower_1080p_30fps_normal.mp4 err: Invalid data found when processing input FFStream::decode: failed HW device init failed, using SW decode.