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, String filters, AVFilterInOut** inputs, AVFilterInOut** outputs);
 public static extern int avfilter_graph_config(AVFilterGraph* graphctx, void* log_ctx);
 public static extern void avfilter_graph_free(AVFilterGraph** graph);
 public static extern int avfilter_graph_create_filter(AVFilterContext** @filt_ctx, AVFilter* @filt, [MarshalAs(UnmanagedType.LPStr)] string @name, [MarshalAs(UnmanagedType.LPStr)] string @args, void* @opaque, AVFilterGraph* @graph_ctx);
 public static extern void avfilter_graph_set_auto_convert(AVFilterGraph* graph, int flags);
 public static extern AVFilterContext* avfilter_graph_get_filter(AVFilterGraph* graph, String name);
 public static extern String avfilter_graph_dump(AVFilterGraph* graph, String options);
 public static extern sbyte* avfilter_graph_dump(AVFilterGraph* @graph, [MarshalAs(UnmanagedType.LPStr)] string @options);
 public static extern AVFilterContext* avfilter_graph_alloc_filter(AVFilterGraph* graph, AVFilter* filter, String name);
 public static extern int avfilter_graph_queue_command(AVFilterGraph* @graph, [MarshalAs(UnmanagedType.LPStr)] string @target, [MarshalAs(UnmanagedType.LPStr)] string @cmd, [MarshalAs(UnmanagedType.LPStr)] string @arg, int @flags, double @ts);
 public static extern int avfilter_graph_send_command(AVFilterGraph* @graph, [MarshalAs(UnmanagedType.LPStr)] string @target, [MarshalAs(UnmanagedType.LPStr)] string @cmd, [MarshalAs(UnmanagedType.LPStr)] string @arg, IntPtr @res, int @res_len, int @flags);
 public static extern int avfilter_graph_parse2(AVFilterGraph* @graph, [MarshalAs(UnmanagedType.LPStr)] string @filters, AVFilterInOut** @inputs, AVFilterInOut** @outputs);
 public static extern int avfilter_graph_send_command(AVFilterGraph* graph, String target, String cmd, String arg, String res, int res_len, int flags);
 public static extern int avfilter_graph_add_filter(AVFilterGraph* graphctx, AVFilterContext* filter);
 public static extern int avfilter_graph_queue_command(AVFilterGraph* graph, String target, String cmd, String arg, int flags, double ts);
 public static extern int avfilter_graph_create_filter(AVFilterContext** filt_ctx, AVFilter* filt, String name, String args, void* opaque, AVFilterGraph* graph_ctx);
 public static extern int avfilter_graph_request_oldest(AVFilterGraph* graph);
 public static extern AVFilterContext* avfilter_graph_get_filter(AVFilterGraph* @graph, [MarshalAs(UnmanagedType.LPStr)] string @name);