diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 9e0baac..bb3ef76 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -287,6 +287,8 @@ if(BUILD_PANGOLIN_VIDEO AND _LINUX_)
   message(STATUS "V4L Found and Enabled")
 endif()
 
+add_definitions(-DHAVE_FFMPEG_AVPIXELFORMAT)
+
 find_package(FFMPEG QUIET)
 if(BUILD_PANGOLIN_VIDEO AND FFMPEG_FOUND)
   set(HAVE_FFMPEG 1)