-VLC_EXPORT( void, video_format_Setup, ( video_format_t *, vlc_fourcc_t i_chroma, int i_width, int i_height, int i_aspect ) );
+VLC_EXPORT( void, video_format_Setup, ( video_format_t *, vlc_fourcc_t i_chroma, int i_width, int i_height, int i_sar_num, int i_sar_den ) );
+
+/**
+ * It will copy the crop properties from a video_format_t to another.
+ */
+VLC_EXPORT( void, video_format_CopyCrop, ( video_format_t *, const video_format_t * ) );
+
+/**
+ * It will compute the crop/ar properties when scaling.
+ */
+VLC_EXPORT( void, video_format_ScaleCropAr, ( video_format_t *, const video_format_t * ) );