ff_riff_write_info  440 libavformat/avienc.c     ff_riff_write_info(s);
ff_riff_write_info   77 libavformat/riff.h void ff_riff_write_info(AVFormatContext *s);
ff_riff_write_info  367 libavformat/wavenc.c         ff_riff_write_info(s);