What Is Deinterlace
Three Methods to Fix Interlaced Video

A Brief Intro to Interlaced Video

Are you troubled by the annoying interlaced lines while viewing a video or movie displayed on your TV or computer? This kind of video is called an interlaced video which uses two fields to create a frame in sequence for displaying. Field 1 contains all odd-numbered lines in the image while field 2 contains all even-numbered lines. To put it simple, an interlaced video frame consists of Field 1 and Field 2.

Progressive Scan VS Interlaced Scan

Actually, there are two basic ways to record and display a video image, progressive scan and interlaced scan, which helps you gain a better understanding of fix video interlacing issue.

Progressive scan: captures, stores, transmits, and displays an image in which all the lines of each frame are drawn in sequence - line by line, top to bottom. A progressive video is listed with the letter "p", such as 480p, 720p or 1080p.

Interlaced scan: The first displays the first and all odd numbered lines, from the top left corner to the bottom right corner. The second pass displays the second and all even numbered lines, filling in the gaps in the first scan. An interlaced video is listed with the letter "i", such as 480i or 1080i.

What Is Deinterlace?

To prevent flicker and reduce transmission bandwidth, all analog camcorders, VCRs, broadcast television systems use the interlaced scan. So, deinterlacing video is in practice a process of converting interlaced videos into progressive videos.

Why We Need to Deinterlace Video?

Most modern displays, such as LCD, DLP and plasma displays, only work in deinterlace mode, as they are fixed-resolution displays and only support progressive scan. In order to display interlaced signal on such displays, the two interlaced fields must be combined into one progressive frame through a deinterlacing process. To deinterlace a video, we introduce 3 free, simple and effective methods to remove the saw tooth type edge distortion below.

How to Deinterlace Video with 3 Free and Easiest Ways

Method 1 - Deinterlace Video with Free HD Video Converter Factory

WonderFox Free HD Video Converter Factory is a totally free, powerful HD video/audio converter and downloader. It provides a fast and quality-preserving solution for video deinterlacing. Unlike some other converters, it has no watermark or file size restrictions. With its unique algorithms, deinterlacing is achievable in 4 straightforward steps. It is an ideal Handbrake deinterlace alternative.

Get it here and install this freeware on your Windows PC. Then launch it.

Step 1 - Add Interlaced Video Files

Open the "Converter" interface and click "Add Files" or simply drag the video you want to deinterlace into this video deinterlacer.

Tips: This tool is also capable of rotating video, cutting video you have, adding subtitles into them and merging multiple videos into one for uploading to and sharing on YouTube, Facebook and other sites, Also, you can download YouTube 4K/8K/360-Degree/VR videos with this program.

Step 2 - Choose an Export Format

Expand the Output Format list on the right, select any desired format or device here. This software supports almost all video/audio formats so you can easily deinterlace MKV, MP4, AVI, MOV, WMV, etc. and convert them to 600+ formats and hot devices.

Step 3 - Enable Deinterlace Option

Open the "Parameter settings" window, and choose "Yes" in Deinterlace drop-down menu. Then click OK to save the change.

Optional - For advanced users, here you are able to change resolution, aspect ratio, encoder, bitrate, frame rate, etc.

Step 4 - Start Deinterlacing Video

Specify your output folder and hit the "Run" button to deinterlace your video.

The deinterlacing process will complete in the possible minimum time and keep the original quality. This is a permanent solution to fix your video. The final contrast effects are listed below.

Method 2 - Deinterlace Video with VLC

Most media players own a built-in "Deinterlace" feature, take VLC for instance, you can deinterlace your video by following the VLC deinterlace steps:

Open video with VLC > click "Video" on the menu bar > go to "Deinterlace" > choose "On".

However, this is a temporary method without any modification done to your original video, which means you will still see the "mice teeth" when playing those video on other PCs, smartphones, portable devices.

Method 3 - Deinterlace Video with HandBrake

HandBrake is a free, multi-platform and open-source video/DVD transcoder widely acclaimed by people. It also enables you to deinterlace your video as follows:

Click "Source" to import video > switch to the "Filters" tab under the Output Settings section > Choose "Deinterlace" > select one of the deinterlace way: Custom, Fast, Slow, Slower, Bob > start conversion.

Although HandBrake is powerful enough, it's not the right one for beginners, especially for those who always complain about the possible crash problem, complicated operation, slow processing speed, anamorphic output quality, etc. If so, you are recommended to refer to Deinterlace Method 1 for solving this problem permanently. Hope this article is helpful to you.