gstav.c:33:39: fatal error: libavfilter/avfiltergraph.h: No such file or directory
#include <libavfilter/avfiltergraph.h>
^
compilation terminated.
Makefile:633: recipe for target ‘libgstlibav_la-gstav.lo’ failed
make[5]: *** [libgstlibav_la-gstav.lo] Error 1
make[5]: *** Waiting for unfinished jobs…
请大佬指教!