How to Brighten a Video on iPhone - Edit Video Brightness and Fix Dark iPhone Video in Low Light

By Harold Bentsen, Updated: Nov. 30, 2021
4 Ways to Fix and Brighten Dark Videos on iPhone 13/12/11/XS/8 Without a Hitch

At the mere mention of iPhone video brightening idea, the first response for most people may be: do it with a video editing app on iPhone. However, unlike photos, videos on iphone cannot be brightened up directly by default or even through iMovie. Even the filters or special effects provided by some popular video editor apps are not the right troubleshooters for dark videos.

Actually, to lighten a video and adjust colors on iPhone has many drawbacks. It is NOT a common approach working for everyone in every situation. To understand this, please read the texts below that will dig into respective pros and cons of "brightening video on iPhone" and "lightening iPhone video on PC or Mac". Hopefully, you can find the most proper way and best video editor app among the 4 ways such as to polish up your HD / 4K dark videos that are shot in low light without a hitch.

Plan Ahead: How to Brighten an iPhone Video While Recording

If you can get thing right in pre-production, why leave it to post-production? Focus and exposure values are at the heart of brightening a video properly. There is no 1-tap magic to bring up the luminance value of your video, because when you change it, the brighter part will be overexposed. Follow these steps to properly brighten an iPhone video before or while recording:

Brighten an iPhone Video While Recording

Step 1. Tap on the screen the part you want to focus on, and you shall see a yellow box with a sun icon next to it.

Step 2. Tap on that sun icon and swipe it up and down to adjust the brightness. If it is not ideal, you can tap on the screen again to slightly change the focus point, and re-adjust the exposure level.

Step 3. If you want the video to have a same brightness level the entire time, go firmly press on the box, and you shall see an AE/AF LOCK on top of the screen. It will ensure that the camera will not automatically adjust focus point and exposure.

Bonus Tip: If you are shooting an iPhone video in an environment with constant light changing, or you want to combine several iPhone videos together, but find out that the clips have different brightness level, you will need professional color grading software to balance out the footage.

#1. Fix and Brighten a Dark iPhone Video on Computer [with Software]

To brighten an iPhone video does not have to edit the video on iPhone. Other than on iPhone with an iOS app, to lighten a dark video on your PC or Mac is a nice choice. Don't fret about moving video files back and fro between iPhone and computer. Transferring videos from iPhone to PC will only cost you several seconds if you choose the right software, such as DearMob iPhone Manager. So, just set your heart at rest and enjoy the benefits brought by it.

At lease, adjusting video brightness on a desktop or notebook has the advantages as follows:

1. The much larger screen size of computer is more eye-protective. The average desktop monitor diagonal size is 22.1 inches. While on the portable PC side, the average display diagonal size of portable PC is 16.1 inches. It is friendly to aged folks or people with poor eyesight.

2. Every detail of video can be seen more clearly and be edited more accurately without the need of zooming in. You can decide whether to brighten the shading and shadow.

3. Video editor on PC averagely has more powerful features than that on a mobile phone. By and large, mobile app is lightweight and has fewer features. Therefore, desktop-based video editor will be more function supportive, e.g.: supporting slow-motion videos, denoising videos and stabilizing videos.

4. It will be more speedy and convenient to batch-process your videos on a computer. Likewise, you can take full advantage of software and hardware acceleration to make video editing on the double.

5. Computer, containing hard drive, is a storage medium itself. After the videos being brightened and adjusted, they can be saved into the computer as the target. In addition, computer can be connected with external hard drive, USB flash drive, etc. Literarily, you don't have to worry about the memory space.

Since video brightening is a small and basic feature, it is unnecessary to resort to the most technical video editor, especially if you are somewhat new to the field.

VideoProc Converter is kind of one-click solution may be more ideal for the non-professional. It gives you full control over your videos, from video editing and adjusting to video conversion, compression and downloading.

Adjust Video Brightness
One-click solution for iPhone Video Brightness (on PC)
VideoProc Converter gives you more:

How to Brighten iPhone Video on Computer Using VideoProc Converter

You should transfer the video(s) from iPhone to PC or Mac through DearMob iPhone Manager or iTunes, and make sure you have downloaded VideoProc Converter on this same computer.

Step 1. Load the original dark video to VideoProc Converter.

Launch VideoProc Converter, the desktop app. Click Video on the main interface, and tap +Video or +Video Folder to load original video file(s).

Load Dark iPhone Video for Brightening

Step 2. Choose a target format.

After loading, click "Target Format" on the lower left and enter the Output Profile window. Scroll up and down to choose a target format based on your target. If you will need to transfer the video back to iPhone after you increase or decrease the video brightness, please choose Apple Device > to iPhone Video > select your iPhone model.

Fix Dark Video with VideoProc

Step 3. Adjust the brightness.

Hitting Effect button on the editing bar, you will see the Effects interface. "Brightness" is in the first place.

* To brighten up: move the control bar of Brightness to the right until the brightness on the right of the preview window seems OK for you.

* To darken: move the control bar of Brightness to the left until the brightness on the right of the preview window seems OK for you.

You can reset and go back to the original brightness.

Adjust Video Brightness

Step 4. Adjust other color effects and video quality.

You can also adjust levels of "Contrast", "Hue", "Gamma" and "Saturation" under "Brightness" in the same way to achieve the ideal color effect for your iPhone video. After that, stroke "Done".

Other Options: VideoProc Converter will let you edit iPhone videos, enhance video quality, resize iPhone videos, cut, crop, rotate a video, add subtitle and watermark to a video. You can also deshake, denoise, merge, split, mirror, produce M3U8 video, add caption track, and so on.

Step 5. Start rendering and converting the video.

Tick Nvida / Intel / AMD to let the software make full use of Hardware Acceleration Engine. Tick "Auto Copy" for the fastest and 1:1 unchanged conversion. Then tap "RUN" button to start rendering and converting the video at the same time. It will be extremely fast (much faster than most of other video editor programs).

After the video editing is completed, find the target file on the Output Folder, and transfer the video file back to iPhone if necessary.

To Brighten a Video on iPhone with iOS App

The default editing feature on iPhone is limited to video trimming, so you have to depend on a third-party iOS app for color correction and changing.

Before we turn eyes towards the top video editor apps for iPhone, a quick word on the disadvantages of on-iPhone video editing.

1. iPhone is too small to avoid misoperation or clicking the wrong place during editing.

2. There are chromatic aberration between the screens of iPhone and other devices. The color or brightness of video that seems good on your smartphone may look distorted on other device.

3. Unlike iPhone photo editor, most video editors lack the support for direct video lightening or say adjusting levels which seems a small feature. (Instead, they may have preloaded filters).

4. The batch process and the batch saving are not as convenient as on a computer.

#2. Fix a Dark Video in Low Light on iPhone With iMovie

iMovie, developed by Apple Inc., is one of the most wildly used video editing apps for iPhone (and also for iPad, iPod Touch and the Mac). In addition to basic editing features, the latest version of iMovie includes options to modify and enhance video color settings, such as making automatic color adjustments, matching the look of one clip to that of another, fixing a discolored clip, correcting the color of a clip based on skin tones and making manual color adjustments


1. The iPhone iMovie app doesn't allow you to adjust levels on clips like you can on your desktop.

2. Some basic features are too hidden to be found on the iOS version.

3. It only supports linear editing.

4. Unlike the Mac edition, the iOS edition lacks some advanced features including denoising and stabilization.

Q: How to Brighten a Video on iPhone with iMovie?
A: Download the iMovie iOS version on your iPhone, install and open it. The only way to adjust brightness levels with the app is using filters.

#3. Brighten a Video on iPhone With Magisto

Magisto is available as an online video editor, a web app and a mobile app. As for the iPhone Magisto app, it is more like an automated video editing and processing.


It cannot be easier, and requires no deeper understanding of complicated video editing.

It creates a video in "3 Easy Steps".


You cannot adjust levels with Magisto.

There is no basic editing feature.

Q: How to Brighten a Video on iPhone with Magisto?
A: Download Magisto on your iPhone, launch the application, simply select your video(s) that you want to be made into a movie, directly select a theme that is brighter, and then select a soundtrack.

#4. Brighten and Edit a Video on iPhone With Filmmaker Pro

As an Apple subsidiary, Filmmaker Pro is very popular among iPhone users. Oriented to video editing and movie making, it features creating unlimited projects, editing videos like adding texts, animated pictures, silhouettes, labels or even drawing on your photos!

As for iPhone video brightness, you can either adjust video grading (video brightness, contrast, saturation, exposure and white balance), or choose 30 expertly crafted filters or realtime filters and effects playback.


1. Too expensive as a video editor app.

2. The camera feature is well subpar.

3. It's clumsy and loaded with something you don't need.

The Bottom Line

Palpably, most of the on-iPhone video editor apps are easy to use, but do not support adjusting levels of video brightness. If you'd like fix dark / low-light iPhone video on a desktop, give VideoProc Converter a whirl. It is all-in-one, ready-made, handy dandy video manager and video processing software that requires no deeper knowledge for computer terms and complicated video processing.

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Harold Bentsen

Harold Bentsen worked on tech writing in Digiarty Software earlier than anyone else. Now as a senior editor-in-chief and immersed geek, he pursues common progress with his team and expects to share more creative content and open-source information to readers. He on the flipside is a symphony amateur and pretended arts connoisseur who is also trying not to be only a dreaming world traveler.

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