AUDIO_FIFO_SIZE   200 libavformat/swfenc.c                 swf->audio_fifo= av_fifo_alloc(AUDIO_FIFO_SIZE);
AUDIO_FIFO_SIZE   458 libavformat/swfenc.c     if (av_fifo_size(swf->audio_fifo) + size > AUDIO_FIFO_SIZE) {