/**
* Take a snapshot and save it to a file
+ * @param num: the video output id (0 for the first/only one)
* @param filepath: path where to save the file
* @param widht: widht of the snapshot
* @param height: height of the snapshot
+ * @return 0 on success, -1 if the video output was not found
*/
- void snapshot( const char *filepath, int widht, int height );
+ int snapshot( int num, const char *filepath, int widht, int height );
/**
* Enable or disable deinterlace filter and select the deinterlace filter to use