How to compress .MOV files?

So, I have a monster 4GB folder full of .MOV files shot on an iPhone 4 that I need to compress small enough to fit on two or three 700MB discs - or a 2GB flash drive. However, I don't really know how to it. I used the Archive Utility to zip it and the folder is still the same size as the original, so I assume that doesn't truly "compress" things. Is it possible to compress in iMovie (and if so, how), or will I need freeware to do it? Or is it even possible at all?

Is it possible to compress in iMovie (and if so, how), or will I need freeware to do it? Or is it even possible at all?
The basic answer here is that any converter app that exports the audio + video data to a lower combined total data rate will produce a small file. However, there is a limit to your ability to decrease the data rates and still produce useable output. In general, decreasing the data rate will drecrease quality unless you also decrease the dimensions of the targeted encoding matrix and/or otherwise modify the distribution of data per unit of time. In most cases the basic strategy is to use a high effeciency codec export option that allows the user to manually modify the export settings to produce the most compact file with a level of quality that the user "can live with." How low you can go will usually depend on the preferences of the specific user. Since your iPhone files are already highly compressed, my personal recommendation in your case would really be to move up to higher density optical media (e.g., DVD) or break down and spend the $10-$20 it would take to upgrade to a 16 GB or 32 GB drive.

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Yes. What format is it now, what size are you aiming for? H264 is a good choice, great results and a much smaller file size.
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or how do i de compress it?
That usually does not turn out so well. Keep the original instead -hard drives are cheap these days. Just buy an external drive and store it there.
More about video compression: http://en.wikipedia.org/wiki/Video_compression

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