That way if you directly modified the original video file in the photo library and made a mistake, you can revert to your saved copy. It is strongly recommended that you backup a file before editing. You will learn how to convert or change slow-mo video to normal speed, and turn normal videos to slow-motion videos or speed up videos on iPhone. Today, we will show you how to edit video playback speed on iPhone, not only those slow-mo videos but also videos at regular speed. When you want to watch long videos in a short time, you can increase the playback speed when you need your audiences to focus on certain parts of the video, you can slow it down. Sometimes, we may like to edit the playback speed of our videos. And if you use an earlier iPhone model or iOS version, the stock Camera app does not support slow-motion or time-lapse video at all. But it lacks the flexibility to slow down video, speed up video, edit iPhone video speed like 1/4X, 1/2X, 3/4X, 2X, 3X, etc. Since the iMovie app seems to work fine on the iPhone 3GS, I have to wonder if the most probable explanation is that Apple is pulling this stunt to get people to buy newer iPhones.Recent iPhone models and iOS versions have a new feature called SLO-MO which allows user to record slow motion videos using iPhone. (Image lost – see Digital Dark Ages) Shows iPhone 3GS, model number MC137LL Version 1.3 of iMovie is what was installed automatically on my iPhone 3GS. I cannot prove that I am not making this up, but here is at least a screenshot showing the model number MC137LL iPhone that I have. Trying to use “Update All” fails for seemingly-arbitrary reasons. When I open the App Store to update software, I can no longer use the “Update All” feature, because the phone immediately objects saying, “This App Is Incompatible With This iPhone: This app requires a front facing camera.” Instead I have to s-l-o-w-l-y select each app individually and click the Update button in each detail screen.
Editing video works fine in iMovie, even on the supposedly-unsupported iPhone 3GS Errors Updating Software The home screen in iMovie showing an active project on my supposedly-unsupported iPhone 3GS. It does not really need a front facing camera. I guess it probably took longer to export than on a new iPhone, but the point is this: it worked. I was able to edit a video sequence and export it properly. iMovie downloaded automatically to my (unsupported) iPhone 3GS when I installed iMovie on another iPhone 4S. Somehow the “automatically download Apps purchased on other iOS devices” option got selected, so when I installed iMovie on a iPhone 4S, it downloaded to my other iPhone 3GS without the normal compatibility checks. It makes me wonder if it is just a stunt to get people to buy new iPhones. I was surprised to see that Apple’s iMovie iOS app runs on my iPhone 3GS (not jailbroken), even though Apple does not officially support it.
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