warnings:
liblavplay.c:1577:8: warning: variable ‘hn’ set but not used
liblavplay.c:1863:9: warning: variable ‘frame_number’ set but not used
liblavplay.c:2677:7: warning: implicit declaration of function ‘fabs’ [-Wimplicit-function-declaration]
fabs(editlist->video_fps - new_eli->video_fps) < 0.0000001 &&
^~~~
liblavplay.c:2677:7: note: include ‘<math.h>’ or provide a declaration of ‘fabs’
fabs
