Well, this workflow won't work. DVCPRO HD is a codec native to FCP only...their Avid will not have it so when they open the file, it will be white or black...audio but no video. They will have to purchase a DVCPRO HD DECODER in order for this to work.
http://www.calibratedsoftware.com/QDVCProHD.asp
Then they will need to transcode to DNxHD for them to output. This really shouldn't cause much quality loss. Some, but negligible. You could always install the Avid codecs on your machine and then convert your final output to DNxHD before you give it to them. The LE codecs are free...PE codecs only come with Avid Media Composer or Adrenaline.
Shane
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