MPC_FRAME_SIZE     61 libavcodec/mpc.h     int Q[2][MPC_FRAME_SIZE];
MPC_FRAME_SIZE    225 libavcodec/mpc7.c     frame->nb_samples = MPC_FRAME_SIZE;
MPC_FRAME_SIZE    414 libavcodec/mpc8.c     frame->nb_samples = MPC_FRAME_SIZE;