I downloaded some movies from the internet in mp4 format. Now that I'm trying to watch them, the video suddenly stops roughly about halfway the movie. How can I fix the problem?
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1. First download the video repair utility here : http://www.grauonline.de/cmsimple2_6...ility#download (you may still need to use an old version just like for Windows)

2. Unzip the downloaded file (which might be automatic) and double-click the "gs.app" or "gs" included file.

3. The first time you launch it, you might have a warning message about the app coming from an unidentified developer. This is an OS X security for the first time you launch downloaded applications. To temporarily disable it, go to System Preferences (in the Apple menu), then Security and Confidentiality / General tab.
Clic the locker icon, enter your password, then set authorization for downloaded applications to "from anywhere" (I am actually using it in French, so the English wording might be a bit different).You should now be able to open the gs.app. Once you have done it, put the security setting back to its original setting.

4. Then use the repair tool (you will need one working video with the same settings as the one you want to repair).

5. Since the demo version only repairs 50% of the video, you need to double the file size. Here is how to double the file size on a Mac:

- Open the Terminal app (time Terminal in Spotlight, upper right of your screen)
- Type "cat " without the quotes. The space is important.
- Then drag you video to the terminal window. This will input the path to the file plus a space in the Terminal window,
- Drag the video file to the terminal window a second time.
- Type "> " in the terminal
- Drag the video file to the terminal window a third time.
- Using the left arrow, go before the extension (.Je9s6r5) and type "doubled". This just adds "doubled" to the name of the result file.

The line in Terminal should look like that, where the actual path can be a lot longer:
cat /PATH/GOPR0002.MP4 /PATH/GOPR0002.MP4 > /PATH/GOPR0002doubled.MP4

Press the Return key. If you do not get an error message, you will just have the usual invite in the Terminal after the copy is complete ...Rat Cortisol ELISA Kit

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