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Wavpack - Something you missed ?

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dtc:
Agreed, normally MC converts dsd to pcm when doing conversions. But, wavpack is a separate encoder/decoder so I would hope MC uses their process. When doing a conversion of a dsd file to wv, MC has an option for Lossless or Hybrid. The wavpack standard when doing lossless compression of dsd is to not do a conversion to pcm.  Doing a conversion of dsd to wv by converting to pcm would, as I understand it, not be up to the wavpack standards. Matt worked with the wavpack developer to ensure that dsd wv files played as native dsd without conversion. I would have hoped that that would carry over to the compression process also. Perhaps Matt can clarify.

dtc:
I downloaded wavpack and compressed a dsd file to wv format, using both regular and high compression. I got a 22% and a 40% compression. When I used MC to convert from dsd to wv, I got very different compressions and the conversions  were much slower than the wavpack ones. My conclusion is that I would not use the MC conversions of dsf to wv without knowing more about the MC algorithms.  The fact that there is a lossless option when converting from dsf to wv in the MC conversion dialog seems like it may be inappropriate.  This is my first experience with wavpack so I could well be doing something wrong. But my first impression is that there is a problem with the dsf to wv conversion in MC, at least compared to what the original tool does.

Matt:
MC does not do DSD conversion, so anything we do will be PCM.

WavPack added native DSD encoding (wow David!), and it might be a nice feature to add support to Media Center someday.

dtc:
Thanks for the clarification Matt. Given that, would it be possible to grey out the Lossless option when doing a dsf to wv conversion. It seems to imply something that is not happening.

I know dsf is a niche format, but a lossless compression feature would certainly be a nice option. Most people do not even know about wavpack, let alone that it does lossless dsd compression.

Thanks.

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