HDCD CDs and transcoding

[simoncn]

I think the version of FFmpeg that is included in Synology DSM is too old to support the hdcd filter. There is a newer version available for download from the SynoCommunity repository. After installing this, you might need to update the stream.converter property to point to the correct location for the later version of FFmpeg. I am away from home at present, so I can't verify the correct setting.