【高音質】AACオーディオ総合8【mp4/m4a】

[qaac] release 2.51

1. Always write zero into avgBitrate field in esds decConfigDescriptor to be spec compliant. Was writing actual average bitrate before (this was automatically done by libmp4v2). The spec says that in case of VBR, is should be zero.
2. Write iTunes compatible "Encoding Params" tag.