$ ldd ./TestProgram
        linux-vdso.so.1 (0x00007ffce5f1e000)
        libffmpeg.so => /home/levelchart8/Downloads/./libffmpeg.so (0x00007f267119f000)
        libdl.so.2 => /nix/store/9hy6c2hv8lcwc6clnc1p2jf09cs5q9dp-glibc-2.30/lib/libdl.so.2 (0x00007f267119a000)
        libpthread.so.0 => /nix/store/9hy6c2hv8lcwc6clnc1p2jf09cs5q9dp-glibc-2.30/lib/libpthread.so.0 (0x00007f2671179000)
        librt.so.1 => /nix/store/9hy6c2hv8lcwc6clnc1p2jf09cs5q9dp-glibc-2.30/lib/librt.so.1 (0x00007f267116f000)
        libgobject-2.0.so.0 => not found
        libglib-2.0.so.0 => not found
        libgio-2.0.so.0 => not found
        libX11.so.6 => not found
        libX11-xcb.so.1 => not found
        libxcb.so.1 => not found
        libxcb-dri3.so.0 => not found
        libXcomposite.so.1 => not found
        libXcursor.so.1 => not found
        libXdamage.so.1 => not found
        libXext.so.6 => not found
        libXfixes.so.3 => not found
        libXi.so.6 => not found
        libXrender.so.1 => not found
        libXtst.so.6 => not found
        libnss3.so => not found
        libnssutil3.so => not found
        libsmime3.so => not found
        libnspr4.so => not found
        libatk-1.0.so.0 => not found
        libatk-bridge-2.0.so.0 => not found
        libdbus-1.so.3 => not found
        libgdk_pixbuf-2.0.so.0 => not found
        libgtk-3.so.0 => not found
        libgdk-3.so.0 => not found
        libpangocairo-1.0.so.0 => not found
        libpango-1.0.so.0 => not found
        libcairo.so.2 => not found
        libm.so.6 => /nix/store/9hy6c2hv8lcwc6clnc1p2jf09cs5q9dp-glibc-2.30/lib/libm.so.6 (0x00007f2671025000)
        libXrandr.so.2 => not found
        libexpat.so.1 => not found
        libdrm.so.2 => not found
        libgbm.so.1 => not found
        libXss.so.1 => not found
        libasound.so.2 => not found
        libatspi.so.0 => not found
        libcups.so.2 => not found
        libgcc_s.so.1 => /nix/store/9hy6c2hv8lcwc6clnc1p2jf09cs5q9dp-glibc-2.30/lib/libgcc_s.so.1 (0x00007f2671007000)
        libc.so.6 => /nix/store/9hy6c2hv8lcwc6clnc1p2jf09cs5q9dp-glibc-2.30/lib/libc.so.6 (0x00007f2670e48000)
        /lib64/ld-linux-x86-64.so.2 => /nix/store/9hy6c2hv8lcwc6clnc1p2jf09cs5q9dp-glibc-2.30/lib64/ld-linux-x86-64.so.2 (0x00007f2679539000)