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Old Jan 20, 2013, 11:39 PM   #1
2012Tony2012
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How to Join Mp4 Video Files?

I have 5 x Mp4 video files I want to join into 1 file that plays from start to end, is that possible, if so, how?
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Old Jan 20, 2013, 11:40 PM   #2
ideal.dreams
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iMovie should be able to accomplish this with ease.
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Old Jan 20, 2013, 11:44 PM   #3
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Quote:
Originally Posted by ideal.dreams View Post
iMovie should be able to accomplish this with ease.
How?
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Old Jan 20, 2013, 11:53 PM   #4
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How?
Import your .mp4 files into iMovie first. Then make a new project, drag your files to the timeline back-to-back and then export the movie.
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Old Jan 21, 2013, 01:31 AM   #5
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Originally Posted by ideal.dreams View Post
Import your .mp4 files into iMovie first. Then make a new project, drag your files to the timeline back-to-back and then export the movie.
I am using iMovie '11 and it's taking 11 minutes to import 195MB of MP4 video files????

And then another 3 minutes to generate thumbnails???

Why so slow? And any way to speed it up?
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Old Jan 21, 2013, 08:44 AM   #6
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I's converting the mp4 as it imports into a Quicktime file using the Apple Intermediate Codec setting.

Quote:
And any way to speed it up?
Not really. It takes as long as it takes
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Old Jan 21, 2013, 11:27 AM   #7
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Quote:
Originally Posted by 2012Tony2012 View Post
I am using iMovie '11 and it's taking 11 minutes to import 195MB of MP4 video files????

And then another 3 minutes to generate thumbnails???

Why so slow? And any way to speed it up?
The older the processor in your computer is, the longer it will take iMovie to get things done. If you think 11 minutes is too long to wait, I wouldn't even bother exporting it, because that's probably going to take an hour or so.
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Old Jan 21, 2013, 06:00 PM   #8
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Quote:
Originally Posted by Dave Braine View Post
I's converting the mp4 as it imports into a Quicktime file using the Apple Intermediate Codec setting.


Not really. It takes as long as it takes
I found a way that speeds it up by 10000%. When importing DESELECT the "Optomize Video" and instead of taking heaps of time, it now only takes seconds.

----------

Quote:
Originally Posted by ideal.dreams View Post
The older the processor in your computer is, the longer it will take iMovie to get things done. If you think 11 minutes is too long to wait, I wouldn't even bother exporting it, because that's probably going to take an hour or so.
So exporting takes ages, yes I noticed that.

So why is iMovie so slow to export? Any other app that's faster with same features?
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Old Jan 22, 2013, 02:25 AM   #9
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Originally Posted by 2012Tony2012 View Post
So why is iMovie so slow to export? Any other app that's faster with same features?
Because it reencodes.

Some much better choices (I've also extensively posted on these here at MR forums at, say, http://forums.macrumors.com/showthread.php?p=15394130 - see my quick tutorial there) are iVI.

You can also give a try to QuickTime (even the non-Pro version built into OS X is able to join videos).

Finally, MP4Tools and MKVToolnix are also able to join videos without reencoding them - see http://forums.macrumors.com/showthread.php?t=1477358 .
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Old Jan 22, 2013, 06:45 AM   #10
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Quote:
When importing DESELECT the "Optomize Video"
Ahh yes. Forgot to ask about that, because I never have it selected. Sorry.
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Old Apr 19, 2014, 08:02 AM   #11
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I use Mp4joiner and Mp4tools to join videos, that I shoot using the same camera and all the same video properties.
I don't want any re-encoding, just 'merge'.
But, at the start of the new joined video(with mp4joiner) or at the end(with m4tools), the video is not ok.
Green screen and pixelized grey screens which seem to try to display video, although audio plays fine.
The joined videos are identical.
Why this happens?
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Old Apr 22, 2014, 03:08 AM   #12
cool11
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I need an application/tool to merge identical video files without re-encoding.
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Old Apr 24, 2014, 03:01 AM   #13
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Why mp4joiner does output such results from my videos?
Something goes wrong with merge, and as I said the videos are identical.
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