st->codec->bit_rate = st->codec->channels * st->codec->sample_rate
* st->codec->bits_per_coded_sample;
st->codec->block_align = iss->packet_size;
st->codec->bit_rate = st->codec->channels * st->codec->sample_rate
* st->codec->bits_per_coded_sample;
st->codec->block_align = iss->packet_size;