AC3_FRAME_SIZE   2197 libavcodec/ac3enc.c         while (wpf > 1 && wpf * s->sample_rate / AC3_FRAME_SIZE * 16 > avctx->bit_rate)
AC3_FRAME_SIZE     64 libavcodec/ac3enc_template.c                           (AC3_FRAME_SIZE+AC3_BLOCK_SIZE) * sizeof(**s->planar_samples),
AC3_FRAME_SIZE     43 libavformat/spdifdec.c         *offset = AC3_FRAME_SIZE << 2;
AC3_FRAME_SIZE    111 libavformat/spdifenc.c     ctx->pkt_offset = AC3_FRAME_SIZE << 2;