• Running ldd /usr/bin/ffmpeg | grep "avutil" outputs: libavutil.so.56 => /lib/aarch64-linux-gnu/libavutil.so.56 (0x0000007f9289f000).
  • In the vast majority of cases, the solution is to properly reinstall avutil-56.dll on your PC, to the Windows system folder.
  • What is avutil-ics-56.dll? ... avutil-ics-56.dll is usually located in the 'C:\Program Files (x86)\K-Lite Codec Pack\Icaros\64-bit\' folder.
  • avutil-56_ms.dll - Winbindex.