Fix up build and start site generator.

src/video/CMakeLists.txt

@@ -1,40 +1,50 @@
 list(APPEND video_HEADERS 
     Video.h
-    FfmpegInterface.h
+    BasicVideoConverter.h
+    IVideoConverter.h
     )
 
 list(APPEND video_LIB_INCLUDES 
     Video.cpp
-    FfmegInterface.cpp
+    BasicVideoConverter.cpp
     )
+    
+list(APPEND video_DEFINES "")
+
+find_package(PkgConfig QUIET)
+set(_HAS_FFMPEG Off)
+if(PkgConfig)
+	pkg_check_modules(LIBAV IMPORTED_TARGET
+	    libavdevice
+	    libavfilter
+	    libavformat
+	    libavcodec
+	    libswresample
+	    libswscale
+	    libavutil
+	)    
+	list(APPEND video_LIBS PkgConfig::LIBAV)
+	list(APPEND video_HEADERS 
+		FfmpegInterface.h
+		)
+	list(APPEND video_LIB_INCLUDES 
+		FfmegInterface.cpp
+		)
+	list(APPEND video_DEFINES "HAS_FFMPEG")
+	set(_HAS_FFMPEG ON)
+else()
+	message(STATUS "LIBRARY CHECK: PkgConfig not found - disabling ffmpeg based video i/o.")
+endif()
+
+set(HAS_FFMPEG ${_HAS_FFMPEG} CACHE BOOL "Can build with FFMPEG")
 
 add_library(video SHARED ${video_LIB_INCLUDES} ${video_HEADERS})
 
-target_include_directories(video PUBLIC
-                          "${CMAKE_CURRENT_SOURCE_DIR}"
-                          )
+target_include_directories(video PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")
 set_target_properties( video PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS ON )   
 
 list(APPEND video_LIBS image)
 
-find_package(PkgConfig QUIET)
-
-if(PkgConfig)
-pkg_check_modules(LIBAV IMPORTED_TARGET
-    libavdevice
-    libavfilter
-    libavformat
-    libavcodec
-    libswresample
-    libswscale
-    libavutil
-)    
-list(APPEND video_LIBS PkgConfig::LIBAV)
-else()
-message(STATUS "LIBRARY CHECK: PkgConfig not found - disabling ffmpeg based video i/o.")
-endif()
-
 target_link_libraries( video PUBLIC ${video_LIBS})
 
-
-set_property(TARGET video PROPERTY FOLDER src)
+set_property(TARGET video PROPERTY FOLDER src)