st->duration = ModPlug_GetLength(modplug->f);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_PCM_S16LE;
st->duration = ModPlug_GetLength(modplug->f);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_PCM_S16LE;