public static extern int avfilter_graph_parse2(AVFilterGraph* graph, String filters, AVFilterInOut** inputs, AVFilterInOut** outputs);
public static extern void avfilter_inout_free(AVFilterInOut** inout);
public static extern int avfilter_graph_parse_ptr(AVFilterGraph* graph, String filters, AVFilterInOut** inputs, AVFilterInOut** outputs, void* log_ctx);
public static extern int avfilter_graph_parse2(AVFilterGraph* @graph, [MarshalAs(UnmanagedType.LPStr)] string @filters, AVFilterInOut** @inputs, AVFilterInOut** @outputs);