I am having trouble with my new camera it is a JVC GZ-HD30 and records in AVCHD. My problem is when i play it back on my computer i get annoying lines when there is fast movement. I believe to be called interlaced. How do i get rid of these lines? I am using a macbook 13inch early 2008 running osx lion 10.7.2 and previewing in VLC player.
I'm pretty sure the issue you seeing is due o a few things - 1) you have an older, slower machine (AVCHD is heavily compressed so you need a lot of processor to view in real time), 2) AVCHD codec may be causing artifacts.
I suggest checking the final cut, premiere or Vegas (or whatever editor you are using) forums for more advice on converting your footage for editing. I convert AVCHD the same as dslr footage - to apple prores for editing. Use compressor if you are using final cut (I still haven't converted to X so I can't speak to it).
Like Jonathan said, AVCHD is very processor intensive to play back. I convert all my AVCHD using Cineform Neoscene, which turns it into AVI and brings up the chroma sampling to 4:2:2 without losing much (if any) information. The avi files are much larger, but they're much easier to play back and edit. But I use this to edit on Sony Vegas, so if you don't then ProRes may be what you need.