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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?

iMac, Mac OS X (10.6.8)

Posted on Jul 31, 2011 8:37 PM

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10 replies

Jan 7, 2015 10:12 PM in response to unawonder

You may also refer to this step by step guide to compress MOV to smaller size at the same time no quality loss

This guide can easily:

  • Compress MOV fast and with almost no loss of video and audio quality loss.
  • Compress MOV as well as save the compressed MOV to MP4, AVI, WMV, 3GP, MKV, ASF etc.
  • Compress MOV video on Mac OS X or Windows computer
  • Besides compressing MOV files, it also can compress AVI, MP4, MP3, MKV, AVCHD, Apple ProRes, etc. as well as MOV.
  • This powerful MOV Compressor also features other editing function like rotate, split, merge, watermark, effect, subtitles and more.

Dec 12, 2012 6:33 PM in response to xTRIGGER092x

I know a step by step guide on how to compress MOV, MKV, MPEG, AVI, MP4, WMV, MOV, VOB, FLV, MPEG2 and more on Mac or Windows at How to Compress Video MOV, MKV, AVI, MP4, MPEG, FLV, WMV, VOB?


Besides compressing video to smaller files size, this guide also applies to compress audio to smaller file size, and applies to convert video to other video or audio formats


Hope it helps more or less

Jul 31, 2011 8:43 PM in response to xTRIGGER092x

There are MANY ways to accomplish the compression you're talking about.


One method is to open the file in Quicktime and then export it from there -- try out some of the various export options to find the best balance of image quality and size that you like.



Even though the quality may not be perfect, my prefered method is to use Handbrake to compress the files.


In order to use Handbrake you'll want to download it along with VLC for the mac. Open VLC first and make sure it launches, then open Handbrake. Handbrake uses VLC for some of it's decoding/encoding tasks so you'll want to make sure it is on your computer.

Anyhow, once Handbrake is open, you can choose one of the video files, select a preset on the right side for what format you'd like it to be in -- iPad, iPhone, AppleTV, Universal, etc. You can then choose where to save the file and what name to give it, and click Encode. Alternatively you can queue that file up and then choose the next one, then encode them all at once.

Mar 7, 2013 4:37 AM in response to xTRIGGER092x

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.


User uploaded file

Mar 8, 2015 11:38 PM in response to xTRIGGER092x

There are three methods to compress a large MOV file:


Method one: Convert MOV to H.264 MP4
Method two: Reduce MOV Frame Size
Method three: Decrease MOV Bitrate

I know a step by step guide that will help you compress MOV files with the above methods.

Beside compress MOV, the guide also inform us how to compress MP4, AVI, WMV, MKV, FLV, ASF, MP3, WAV and so on.

How to compress .MOV files?

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