How to Reduce Video File Size on iPhone Properly for Beginners

Open the Settings app from your home screen, and tap the Camera option.

Head to the Formats screen, and select High Efficiency. Then the videos recorded on iPhone will be encoded in HEIF/HEVC format.

Go back to the Camera settings screen, and tap Record Video. Then choose a lower video resolution on the list.

Then open the Camera app, and record a video. Then you will find the file size is smaller than MP4.

Run the video compressor app on your iPhone.

Tap the Add icon to open your Camera Roll. Here you can select the video to compress on your iPhone. The first time you open the app, you need to permit it to access your Camera Roll.

Tap the Next button at the top right corner to open the video in the video compressor. Then downscale the Frame Rate and/or Video Dimensions until you are satisfied.

Press the Compress button to decrease the size of the iPhone video. Now, you will be asked to Delete Original or Keep original video.

Install the video compressor

Launch the best video compressor once you install it on your PC. There is another version for Mac. Go to the Toolbox window from the top of the screen.

Open iPhone video

Choose the Video Compressor option, and drag and drop the large iPhone video into the main interface. If you still have the video on your iOS device, transfer it to your computer first.

Compress iPhone video

Enter a new filename into the box, and move the Size slider until the file size is small enough. You can also type in a value into the box to reduce the iPhone video file size accurately. Here you can also change the video format, resolution, and other options to compress it further. Click the Folder icon at the bottom and select a specific directory. Finally, click on the Compress button to confirm the changes.

Reduce video size by trimming

If the iPhone video is very long, there is another way to compress it without downscaling the resolution. Go back to the Toolbox window, and choose Video Trimmer. Then open the iPhone video. Play the video, click the Set Start button to set the new starting point, and hit the Set End button to set the new ending. Press the Add Segment button on the left side to add the clip to the list, and trim other segments. At last, set the output format and destination. Click the Export button to save the small video clips.