FF_OUTLINK_IDX    124 libavfilter/avf_concat.c     unsigned out_no = FF_OUTLINK_IDX(outlink);
FF_OUTLINK_IDX    102 libavfilter/f_streamselect.c     const int outlink_idx = FF_OUTLINK_IDX(outlink);
FF_OUTLINK_IDX    393 libavfilter/src_movie.c     unsigned out_id = FF_OUTLINK_IDX(outlink);
FF_OUTLINK_IDX    603 libavfilter/src_movie.c     unsigned out_id = FF_OUTLINK_IDX(outlink);