avfilter_graph_request_oldest 3739 ffmpeg.c           ret = avfilter_graph_request_oldest(graph->graph);
avfilter_graph_request_oldest 1529 libavfilter/avfilter.h int avfilter_graph_request_oldest(AVFilterGraph *graph);
avfilter_graph_request_oldest  215 tools/uncoded_frame.c         ret = avfilter_graph_request_oldest(in_graph);