[Solved] Compile error when using FFMPEG library

A lowercase -l is a linker option used to specify libraries. They might look like libsomething.a and becomes -lsomething in the linker invocation. In order to add a directory to the header search path, use a capital i, -I. gcc main.c -L/some/path/ffmpeg_build/lib -I/some/path/ffmpeg_build/include 1 solved Compile error when using FFMPEG library