Select the share icon in the lower left corner of the video. Select the cut icon above. Select the option to import materials into the shear block. Select the shift icon below. After setting the double speed, click the confirmation icon.

Click the stopwatch icon, select the required multiple, and click on the top left corner to finish.

-1 Steps 1 Click Video-In the phone photo album interface, click Video. 2 View the video! -2 Step 2 View Video-In the expanded video interface, you can view the video.

Open the editing software, click+to open the iMovie editing software that comes with iphone, and click+to create a new project. 2 Click on the video to import the video. Click on the video to import the video that needs to be accelerated. 3 Click the stopwatch, select the multiple, click the stopwatch icon, select the required multiple, and click on the upper left corner to finish.

If you want to double the speed of Apple video, you can use the "iMovie clip" that comes with your phone to adjust the speed, or you can use third-party software.