Patch by Howard Chu, hyc highlandsun com
Originally committed as revision 22835 to svn://svn.ffmpeg.org/ffmpeg/trunk
if(!strcmp(key, "duration")) s->duration = num_val * AV_TIME_BASE;
else if(!strcmp(key, "videodatarate") && vcodec && 0 <= (int)(num_val * 1024.0))
vcodec->bit_rate = num_val * 1024.0;
+ else if(!strcmp(key, "audiodatarate") && acodec && 0 <= (int)(num_val * 1024.0))
+ acodec->bit_rate = num_val * 1024.0;
} else if (amf_type == AMF_DATA_TYPE_STRING)
av_metadata_set(&s->metadata, key, str_val);
}