Wondershare Repairit
Video Repair

Perfectly repair videos with various corruption issues in minutes.

  • Fix video issues like video pixelated, video black screen, video grainy, etc.
  • Repair videos of 15+ different video formats, such as MP4, MOV, MKV, etc.
  • Advanced Repair mode for severely corrupted videos.
  • Support a wide range of storage media including cameras, SD cards, mobile phones, hard drives, etc.
video repair

How to Fix Pixelated or Grainy Videos [5 Methods]

If you have ever played a video that intermittently shows "polygon" like objects, that, my good friend, is what pixelation looks like. It frustratingly diminishes the quality of the video.

Nobody likes to watch a movie with polygons competing with actors for screen time-just a little joke. Once you get the hang of it, fixing pixelated videos is not exactly rocket science.

Part 1. What Leads to Video Pixelation Issue?

Pixelation usually happens when you compress the data in video files to make the video files smaller and reduce memory usage.

This excessive compression, however, could negatively affect video quality. Some of the data encoded in the video are permanently erased, thereby creating the "pixelation" effect on the video.

But what can cause the video pixelation? There are several factors.

In most cases, pixelated videos can be repaired. Nevertheless, there are some extreme cases where it becomes impossible to fix the videos in any way.

It seems then that the only possible solution is to reduce the size of your playback window. This inadvertently reduces the grains and improves video clarity.

Part 2. 5 Methods to Fix Pixelated or Grainy Videos

Pixelated or Grainy videos are quite irritating as they make the video viewing experience less enjoyable. There are many reasons why your video footage may look grainy, but fortunately, there are several methods that allow you to rectify such errors.

So, sit back and relax as you are giving a guided tour on how to fix grainy videos.

Method 1. Use A Professional Video Repair Tool

Wondershare Repairit Video Repair is an advanced video repair tool that allows for the repair of corrupted videos caused by compression and many other issues. With a click of a button, it can quickly rectify grainy, frozen, blurry, or flickering videos.

It supports multiple video formats such as MOV, MP4, M2TS, MKV, MTS, 3GP, AVI, and FLV. This wide range of formats means that it's almost certain that Wondershare Repairit would be able to handle whatever you throw at it. Download it and have a try!

  • Repair damaged videos with all levels of corruption, such as video not playing, video no sound, out-of-sync video or audio, playback errors, header corruption, flickering video, missing video codec, etc.

  • Repair videos of diverse formats, including MOV, MP4, M2TS, MKV, MTS, 3GP, AVI, FLV, MXF, KLV, INSV, M4V, WMV, MPEG, ASF, etc.

  • Repair damaged or corrupted videos caused by video compression, system crash, video format change, etc.

  • Repair critically damaged or corrupted videos available on SD cards, mobile phones, cameras, USB flash drives, etc.

  • Repairit has a quick and advanced scanning mode. You can use either depending upon the level of corruption the video file has undergone.

  • Support Windows 11/10/8/7/Vista, Windows Server 2003/2008/2012/2016/2019/2022, and macOS 10.10~macOS 14.

How to Fix Grainy Video Files in the Quick Repair Mode

Wondershare Repairit has two video repair modes, namely Quick Repair, and Advanced Repair.

The Quick Repair mode supports the repair of videos with simple errors. Follow the steps and repair your slightly damaged video files.

Step 1. Open Wondershare Repairit and add the video you want to repair by clicking the "+Add" button.

add damaged video

Step 2. Click on the "Repair" tab and wait until the process finishes.

scan and repair corrupted videos

Step 3. After the repair job completes, you can click the video to preview the video quality, then click the "Save" button to save the repaired file on your computer.

preview and save the repaired videos

How to Fix Grainy Video Files in Advance Repair Mode

Advanced Repair accordingly allows you to repair it by adding a Sample File to it. This mode is more suited to video files that get severely corrupted or you don't satisfied with the quick repair results.

A Sample File is a working file created from the same device and in the same format as the corrupted file. Wondershare Repairit consequently uses the information from the working sample files and repairs the corrupted files.

Step 1. Add some sample videos shot by the same device.

add sample videos

Step 2. After selecting the sample video, click on Repair > Save. Once the repair ends, a new window would open, indicating a successful repair. Finally, click the OK tab to save and preview the repaired video.

save video to new path

Method 2. Recover from Original Video File

If it is the excessive levels of compression that result in pixelation, one way can help you. You could create a new video file provided that you have access to the original video file.

Simply discard the pixelated video and save the original video file with a lower level of compression. That should do the trick.

Method 3. Fix Pixelated Video with Adobe After Effects

Adobe has many advanced plugins like After Effects that help users remove pixels from videos and improve visual quality. Adobe After Effects is one of the most popular visual effects tools. With its built-in "Remove Grain" effect, you can effortlessly remove pixelation and grain from your videos. It removes grain caused by low light or high ISO during recording, and you can apply the effect to a specific area or the entire frame.

Here is a step-by-step guide on removing pixelation from videos using Adobe After Effects.

Step 1. Download and install After Effects from the official website of Adobe.

Step 2. Import the pixelated video you want to unpixelate and drag it to the timeline.

Step 3. Come to the Effects & Preset panel, search the "Remove Grain" effect, and drag the effect to the composition area, then you can see the preview result.

choose remove grain effect

Step 4. Choose "Noise Reduction" settings and adjust the values of Noise Reduction to make the video more realistic.

Step 5. After that, you need to change "Preview" to "Final Output" to apply the effect to the whole area, then export the video that has been removed pixelation.

choose final output

Method 4. Limited Hardware Processing Capacity

Sometimes, the problem is not necessarily with the video, but with the hardware processing the video. High-resolution videos consume significant computing resources. They will appear pixelated if the played videos exceed the processing capacity of the hardware being utilized.

In this instance, the videos are not the culprits. The only solution would be to utilize a system that can handle such videos.

Method 5. Incompatible Video Player

When you are sometimes faced with a pixelated video, it might be a problem with the video player's incompatibility, rather than a problem with the video.

In some instances, videos are encoded with unique algorithms that make certain video players unable to render them efficiently.

You could try using a different video player to confirm if it plays the video without issues.

Part 3. Bonus Tips Against Pixelated or Grainy Video

We usually refer to a pixel as the smallest unitary component of a digital image. The more pixels used to represent an image, the higher the resolution and quality of a video or image file.

The image resolution is the information an image or video holds. A higher resolution means more info the digital file contains.

If you capture a video in a dark environment or with a camera that has low-resolution footage, pixelated videos can occur. If you compress it to tiny file size or a low video resolution, it can also happen.

All essentially mean is that not enough information is present in the video file for it to run perfectly. You can prevent the problems associated with video pixelation by doing the following:

1. Ideal Lighting Conditions

Well, shooting videos in the correct lighting conditions may seem a bit too obvious. However, having adequate lighting is vital if you want to avoid grainy videos.

When shooting videos outdoors, natural daylight is perfect enough. When shooting indoors or at night, you can enhance the natural lighting with adequate artificial lighting.

2. Using the Correct Camera Settings

Prevention, as it is said, is always better than cure. It is especially true when shooting videos, as avoiding the situations that may create pixelated videos in the first place can save you from a lot of problems afterward.

The use of correct and ideal camera settings is your best bet in avoiding pixelated videos.

3. Using Lower ISO Settings

ISO in a camera measures the sensitivity of the image sensor. When shooting videos, it is always advisable to use a lower ISO setting. It can avoid excessive light from distorting your videos.

But there is a particular case. When shooting in low light conditions, it may be necessary to increase ISO to compensate for the lower lighting level.

4. Wide Aperture

The camera aperture determines the extent of light that enters your camera. In low light conditions, set your camera to wide aperture settings and reduce any possible distortion to your video.


Those evil polygons turn up and flood your video screen with their unwanted appearances. It is certainly not the best experience when you play a video.

But it's not all gloom as the pixelation can be fixed in most cases. With the use of the right software, like Wondershare Repairit, pixelated video files can easily be repaired.

Note: Case: I fixed my grainy videos, but just found some other videos that were playing choppily. Fix The solutions to choppy, jerky, or skipping videos.