Does Deinterlacing Improve Video Quality?

Video content has become an essential part of our lives, and we consume it in various forms. Whether we watch movies, TV shows, or online videos, the quality of the video is a crucial factor that determines our viewing experience. One aspect of video quality that often confuses people is interlacing.

Interlacing is a technique used in television broadcasting to reduce bandwidth requirements and improve the quality of moving images. However, deinterlacing has become a popular technique to improve video quality further. In this article, we’ll explore whether deinterlacing improves video quality or not.

What is Interlacing?

Interlacing is a process where only half of the lines in a frame are displayed at a time. This technique splits each frame into two fields – odd and even lines.

First, odd lines are displayed on the screen, followed by even lines to create one complete frame. The process repeats itself for every frame displayed on the screen.

The Problems with Interlaced Video

While interlacing may have been effective in reducing bandwidth requirements and improving image quality in the past, it’s not without its problems. One significant issue with interlaced video is the visible horizontal lines that appear when there’s motion on the screen. This effect is known as “interlace flicker,” and it can be distracting for viewers.

What is Deinterlacing?

Deinterlacing is the process of converting interlaced video into progressive video by merging both fields into one complete frame. This process results in smoother motion and eliminates interlace flicker.

Does Deinterlacing Improve Video Quality?

Deinterlacing can indeed improve video quality by removing interlace flicker and providing smoother motion. However, it’s important to note that deinterlacing can also introduce new problems if not done correctly.

One issue with deinterlacing is the loss of image resolution. Since deinterlacing combines two fields into one frame, there’s a loss of resolution in the final image. The loss of resolution can result in a slight softening effect that may be noticeable to some viewers.

How to Deinterlace Video Correctly

To deinterlace video correctly, you’ll need to use specialized software that can perform the process without introducing new problems. One way to deinterlace video is to use a dedicated video editor like Adobe Premiere or Final Cut Pro. These software programs provide options for deinterlacing while preserving image quality.

Another way to deinterlace video is to use a standalone deinterlacing tool like Handbrake or FFmpeg. These tools allow you to convert interlaced video into progressive video while giving you control over the output settings.


In conclusion, while interlacing was an effective technique in the past, it’s become outdated and has several problems that can impact viewing experience negatively. Deinterlacing can improve video quality by removing interlace flicker and providing smoother motion, but it’s important to do it correctly using specialized software that preserves image quality and avoids introducing new problems.