Attempt to work around travis.

cmake/FindFFmpeg.cmake

@@ -33,7 +33,7 @@ include(FindPackageHandleStandardArgs)
 
 # The default components were taken from a survey over other FindFFMPEG.cmake files
 if (NOT FFmpeg_FIND_COMPONENTS)
-  set(FFmpeg_FIND_COMPONENTS AVCODEC AVFORMAT AVUTIL SWSCALE SWRESAMPLE)
+  set(FFmpeg_FIND_COMPONENTS AVCODEC AVFORMAT AVUTIL SWSCALE)
 endif ()
 
 #
@@ -144,7 +144,7 @@ if (NOT FFMPEG_LIBRARIES)
 endif ()
 
 # Now set the noncached _FOUND vars for the components.
-foreach (_component AVCODEC AVDEVICE AVFORMAT AVUTIL POSTPROCESS SWSCALE SWRESAMPLE)
+foreach (_component AVCODEC AVDEVICE AVFORMAT AVUTIL POSTPROCESS SWSCALE)
   set_component_found(${_component})
 endforeach ()