Hi all, I wanted to test QSV encoding and decoding, which is included since several months in FFmpeg, and have a few questions.
1. QSV encoding and decoding depends on libmfx, but no references are present in the code to the library, so I have to suppose that the required library is this one: https://github.com/lu-zero/mfx_dispatch While at it, do you know what's the point of the mfx_dispatch component (why adding the intel media library path to flags is not enough)? 2. The mfx_dispatch library compiles fine on my system, but then I wonder how it is supposed to reference the Intel Media library: https://software.intel.com/en-us/intel-media-server-studio ... I'm able to compile FFmpeg with --enable-libmfx after installing the mfx_dispatch library, and run this command: ffmpeg -i test.mp4 -c:v h264_qsv -y test.out.mp4 but then it fails with: Error initializing an internal MFX session Running strace on the command it results that it's looking for the libmfxsw64.so library and failing: open("/lib/x86_64-linux-gnu/libmfxsw64.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) open("/usr/lib/x86_64-linux-gnu/libmfxsw64.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) open("/lib/libmfxsw64.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) open("/usr/lib/libmfxsw64.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) munmap(0x7f9a55072000, 155122) = 0 If I update the LD_LIBRARY_PATH to point to the intel media library in /opt/intel/mediasdk it will find the library and then hang. I had some hard time finding relevant information on the Internet, so I ask if you can help to clarify these points. I'll happily provide a few benchmarks and update documentation accordingly if I manage to make it work. -- FFmpeg = Fancy and Forgiving Mean Problematic Excellent Gymnast _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
