show_formats      153 cmdutils.h     void show_formats(void);
show_formats     3770 ffmpeg.c           { "formats", OPT_EXIT, {(void*)show_formats}, "show available formats, codecs, protocols, ..." },
show_formats     2485 ffplay.c           { "formats", OPT_EXIT, {(void*)show_formats}, "show available formats, codecs, protocols, ..." },
show_formats     4466 ffserver.c         { "formats", OPT_EXIT, {(void*)show_formats}, "show available formats, codecs, protocols, ..." },