MPC_FRAMESIZE     109 libavformat/mpc.c     av_set_pts_info(st, 32, MPC_FRAMESIZE, st->codec->sample_rate);
MPC_FRAMESIZE     112 libavformat/mpc.c     s->duration = (int64_t)c->fcount * MPC_FRAMESIZE * AV_TIME_BASE / st->codec->sample_rate;