Helo, I am trying to decode a video stream in C++ application using ffmpeg cuda hardware acceleration. My windows machine has GPU is GTX1060 Update driver version 512.59
err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_CUDA, NULL, NULL, 0) Function fails with errorcode -12 but when I pass AV_HWDEVICE_TYPE_DXVA2, it succeeds. ---------------------------- My observations about ffmpeg cuda compiled tool : I observed that cuda based image decoding and video decoding is working fine using ffmpeg tool as below example works and use GPU for decoding purpose. ex1. ffmpeg -hwaccel cuda -i "D:\myvideo.avi" output.mp4 ex2. ffmpeg -hwaccel cuda -i D:\myvideo.mp4 -y ./tests/%04d.jpg also the tool shows it supports cuda hardware acceleration. command: ffmpeg.exe -hwaccels output: ffmpeg version 4.4.git Copyright (c) 2000-2022 the FFmpeg developers built with Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30140 for x64 configuration: --enable-nonfree --enable-shared --enable-ffnvcodec --enable-cuda-llvm --enable-gpl --disable-debug --enable-cuda-nvcc --enable-libnpp --toolchain=msvc --extra-cflags=-I../nv_sdk --extra-ldflags='-libpath:../nv_sdk' --nvccflags='-gencode arch=compute_60,code=sm_60 -O2' libavutil 57. 24.101 / 57. 24.101 libavcodec 59. 28.100 / 59. 28.100 libavformat 59. 23.100 / 59. 23.100 libavdevice 59. 6.100 / 59. 6.100 libavfilter 8. 38.100 / 8. 38.100 libswscale 6. 6.100 / 6. 6.100 libswresample 4. 6.100 / 4. 6.100 libpostproc 56. 5.100 / 56. 5.100 Hardware acceleration methods: cuda dxva2 d3d11va ----------------------------------------- So it looks like the compiled libraries are fine. I am missing some other thing. Can someone help on this cuda based decoding using ffmpeg. Thanks Santosh
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