getting jaggies

I am sorry for posting this else where but not sure where the right place to post this is.

ok here is the issue and wasn't sure what area to post this in:

I have the cannon vixia hfm31 camera, I also use an imac. in order to get my files on my computer I have to use either imovie or final cut pro x. imovie converts the .mts files into .mov files . The clips look fine in imovie and in fcpx.

I have decided to start using adobe premier. The problem after looking though all the setting it seems is that the way imovie converts the .mts files into .mov files, I end up with small lines that look like interlacing which it isn't but I get that combed look if try to use the files in premiere to edit with. I know this because I have a pc laptop now and premier uses the same .mts fines perfectly on the pc.

Has anyone else encountered this? I really want to start using premier but am not sure how to get rid of this interlace look I tried deinterlacing in premier but it didn't work.

Any suggestions?

I shot in 30p I know premiere can edit mts but I can't seem to extract the files off the camera like that on the mac. I didn't know about make new sequence from clip option thanks I will look for that.