I recorded video using a JVC GY HM 170u and used the HD 1080 QT YUV422 setting providing the best color sample. However after taking QT off the card and viewing in my computer I can not see the video. Importing into MC I see the green bar on the source monitor indicating a mixed frame rate however I was shot at 30 FPS and imported fine at 30 FPS. 

When I reencode the video to QT match source h264 I can see the video in MC however it does seems washed out. Waiting on a reply from JVC Tech Lorenzo White.

Could someone have an idea what is going on? I can view the files in VLC, both audio and 1 and 2 are there fine.  

Update: According to this JVC report Media composer does not support 50M YUV422, I guess this will have to be converted. 

http://pro.jvc.com/pro/attributes/4k/desc/nle_hd.html

How do I preserve the 422 color and what do I convert it to?

Just a guess. Try to load your files into Resolve and export from there to Avid.

Joachim