av_buffersink_get_frame_rate 2833 ffmpeg.c                           ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
av_buffersink_get_frame_rate  163 libavfilter/buffersink.h AVRational av_buffersink_get_frame_rate(AVFilterContext *ctx);
av_buffersink_get_frame_rate  173 tools/uncoded_frame.c             st->stream->  r_frame_rate = av_buffersink_get_frame_rate(st->sink);