Home > Media Converter > What Is Deinterlacing

By Kayla Collins - Last Updated: Contact Author

What Is Deinterlacing?

What does it mean to deinterlace a video? Deinterlacing can be referred to as a technology or process of changing an originally interlaced video[1] to a non-interlaced (progressive) video, for example, converting 1080i to 1080p. Typically, deinterlacing[2] can be realized through four different channels, namely, in the playback device, in the player apps, through the filters inside video editing program and through professional deinterlacing software.

Deinterlacing

1. In the playback device: Virtually all the modern computer displays and HDTVs use progressive scanning system. But when an interlaced video is played back on a computer, there may be noticeable artifacts.

2. In the player apps: Many player apps have built-in deinterlacing modes. Taking VLC Media Player as an example, it utilizes several related algorithms, including Doublers, Interpolators, Blenders and Inverse telecine. However, a player will not change the original footage, but to present it on the display in the progressive form, in a read-only way. Therefore, if you want to radically make the original interlaced video deinterlaced, you should use the fourth method – interlacing software.

3. Through video editing software: Most video editing solutions are equipped with deinterlacing filters to avoid the image artifacts when playing an interlaced video on a progressive monitor. They are to convert these interlaced fields into non-interlaced video sequence. However, this process is not perfect since it will decrease resolution of the video, especially on the sections having moving objects. Typically, this process requires temporal interpolation which will guess when and where the movement will happen, and will apply Motion Blending and Motion Correction to smooth the section with motions.

4. Through deinterlacing software: When it comes to deinterlacer software, most will give reasonable results. Some, although rare, are even capable of converting an interlaced video into a progressive one without reducing video resolution and image quality. VideoProc is one of them.

VideoProc - A type of video editing, converting and compressing software that provides a one-click solution to deinterlace. It applies "Yadif Double Frames" and motion-compensated algorithms to guarantee the deinterlacing quality. Besides, it utilizes Level-3 GPU Acceleration, pass-through technology, 2-pass encoding to further enhance the output result and improve the efficiency greatly.

You can choose any output video format you like to cope with compatibility issue, and you can also use the same to cut, crop, merge, compress, upscale/downscale, rotate videos with great ease.

Banner of VideoProc

When Do You Need to Deinterlace a Video?

There are some scenarios that people are starved of deinterlacing videos:

1. When you want to play an interlaced video on an LCD computer, a recent HDTV, a 4K/8K HDTV, you are suggested to deinterlace the video first to avoid artifacts.

2. If you edited a video on our computer, and wanted to play it on a standard NTSC display, then you needed to deinterlace it, because there will be a mismatch between computer display system and digital television signal format.

3. Some TV channels cannot air commercials or some music video clip in a progressive state, and some will even double or halve the original fps, for example, from 25fps to 50fps.

How to Deinterlace a Video with VideoProc

What matter most to people who need to deinterlace a DVD or video are image quality and efficiency. VideoProc guarantees both quality and low CPU consumption during the whole process. Better still, it is easy to use. Please see how you can make it done within a few steps:

Step 1. Download and install the deinterlacing tool.

Download the video file converter that facilitates deinterlacing a video and DVD on your Windows or macOS computer.

Step 2. Input the source interlaced video.

Click Video on the home interface -> +Video / + Video Folder -> browse and choose the video file(s) you’d like to get deinterlaced.

• Please make sure the video is really interlaced. If you mistakenly deinterlace a video which is non-interlaced, the result will be worse than the source.

Step 3. Choose an output format.

Find Target Format on the lower area -> Tap Video -> choose a codec or container format you like.

Step 4. Tick Deinterlacing

Tick the Deinterlacing option on the right area.

[Optional] You can also edit video at the same time by clicking on the corresponding editing button.

Step 5. RUN

Hit the RUN button on the right bottom and start executing the deinterlacing and conversion command.

How to Deinterlace a Video with VideoProc

The mission can be completed in a few seconds (also depending on the length and size of the source file.

The following charts can show you the differences before and after. And you can see, there is no change (or reduction) in resolution, frame rates, etc.

No Image Degradation After Video Deinterlacing

Related External Source from Wikipedia:

[1] What is interlaced video: Interlaced video (Interlaced scan) is a technique for doubling the perceived frame rate of a video display without consuming extra bandwidth. The interlaced signal contains two fields of a video frame captured consecutively. This enhances motion perception to the viewer, and reduces flicker by taking advantage of the phi phenomenon.
[2] What is deinterlacing: It is an imperfect technique that will generally lowers resolution and causes various artifacts - particularly in areas with objects in motion. Providing the best picture quality for interlaced video signals requires expensive and complex devices and algorithms. For television displays, deinterlacing systems are integrated into progressive scan TV sets that accept interlaced signal...

ABOUT THE AUTHOR

Kayla Collins

Kayla Collins, a senior member of Digiarty software for 5 years, knows a thing or two about digital devices & video processing software like GoPro, DSLR camera, Drone, iPhone iPad, iMac, iMovie, etc. and is glad to share her knowledge to help people out of trouble. She's also deeply passionate about yoga, jogging, roller-skating, handcraft, reading, music, movie and more.

Home > Media Converter > What Is Deinterlacing