5 ways to reduce video size while keeping quality simple

Saving too many videos will reduce the memory capacity of the computer in particular and electronic devices in general. So let’s find out with Tnhelearning.edu.vn the following 5 simple ways to reduce the size and still keep the video quality!

Almost everyone encounters many difficulties in downloading and storing large video files. Large videos are often associated with high resolution, you need to spend a lot of time and use high speed bandwidth to download them.

Do you know to reduce video size without losing quality, there are usually 2 ways to handle it:

• First : Shorten the video length , you can cut the beginning or end footage, or unnecessary places to reduce the file size.
• Second : Remove unnecessary audio from the video.

In addition to the above two ways, you can still use some application platforms to handle reducing the size without losing the inherent video quality, as follows:

• Processing by computer software : VLC (versions for Windows, Mac and Linux are available); Shotcut (available for Windows, Mac and Linux); and QuickTime Player (for Mac).
• Processing on online websites : VideoSmaller and Clipchamp.

The relationship between video size and quality

Before processing video, you need to better understand the 3 factors that affect video size : resolution, bitrate and encoding.

Video resolution

Resolution is the number of pixels represented in your video . It is usually represented by horizontal and vertical (horizontal x vertical) size numbers.

• For example, an HD video has a resolution of 1080p , usually denoted by the number 1920 x 1080 .

In addition, the common aspect ratio is 16:9 in addition to several other aspect ratios.

Here are the recommendations that YouTube provides to users to ensure the quality of uploaded videos:

So what resolution should you use?

This depends on the majority of people watching your video with what quality .

• For example, videos with 1080p quality are often chosen by users to watch the most on YouTube online, because of the beautiful and clear picture quality.

However, if viewers use their televisions to watch your videos on YouTube, then the higher the resolution, the better , but it still depends on the resolution of the TV screen . For example, with about 20% of Americans owning a 4K television in their home, the resolution of YouTube videos played on televisions is typically 1440p or 1080p .

In contrast, viewers using smartphones or tablets, to watch your videos are different. The video resolution displayed for viewing depends on the resolution, screen size and pixel density on the viewer’s device. Popular are 720p and 1080p video quality.

Video bitrate

In addition to resolution, bitrate is also an important factor to help you handle video size. Bit rate represents the rate at which content information is transferred per second and is usually measured in units of Mpbs (or Kbps ).

Here are recommended YouTube video sizes and bitrates for users:

Therefore, if you want to change the size , you can affect the bitrate factor of the video according to the suggested numbers (in the table above). It is a good idea to allow the video size to increase or decrease depending on your purpose.

Video encoding

Video encoding consists of 2 elements: codec (decoder) and container r (complete file).

There is a lot of discussion about video encoding, but Tnhelearning.edu.vn recommends using H.264 encoding with MP4 encoder . This is an effective method of video compression , but it will slightly affect the quality

In fact, it proves that when you reduce the video size, it is almost inevitable to reduce the image display quality.

Understanding the 3 factors above (resolution, bit rate and encoding) that affect video size, will help you have a flexible way of handling when reducing file size while ensuring quality. optimal image display quality.

How to reduce video size and still retain quality

To reduce the video size while ensuring the best quality is preserved, you can use the following supporting platforms:

Processing by software on the computer

There are 3 supporting software as follows:

VLC software

Is one of the popular software used to view, listen to music and process video files today. Easy to use interface with many powerful support features.

Instructions for processing videos with VLC

Step 1 : Download the appropriate software for your computer’s operating system. Once installed, go to Media -> Convert/Save .

Step 2 : Click Add and select your video file you want to handle space.

Step 3 : Click Convert/Save to display the conversion options. In the list displayed, you choose the type of conversion you want.

For example : If you upload videos to YouTube , usually want to keep the high quality , then at this point, you just need to select Video for YouTube in HD standard . This means, you have determined how the majority of people watch your video on YouTube.

Select the conversion mode to Video for MPEG4 1080p TV/device or Video for MPEG4 720p TV/device (for TV viewing devices), or smaller file size conversion mode (for Android devices, iPad, or iPhone for example).

Step 4 : Proceed to change the resolution of the video, by going to Settings (settings) to the right of the Profile (profile) of the file and then selecting the Resolution tab (resolution). Now you adjust the ratio according to your wish n.

Step 5 : Click Save to the location of the drive you need to save and then select the Browse button.

That’s it, you’ve finished processing the video size already! If you need to compress too large a video size, it will take a long time to wait.

Shotcut software

Although not as popular as VLC, but Shotcut is considered an alternative software to process and compress video files for free and quickly. This software provides many functions for users: create effects, support formats, edit audio, ….

Instructions for processing videos with Shotcut

Step 1 : Download Shotcut software. Install and open the app. Next, open the video you want to process by selecting the Open File button.

Step 2 : Convert the video to the new format, by clicking the Export button.

Step 3 : You will see a list with many video conversion options.

In general, you should choose the H.264 Baseline Profile format as the best choice. Because this format will help reduce the size of the video without reducing the quality of the displayed image too much.

Step 4 : Change the video resolution by adjusting the parameters in the section Resolution (resolution) and Aspect ratio (aspect ratio).

In addition, when you choose a lower output video quality than your original video, the resolution will also be reduced. This you can keep in mind when customizing the resolution so that it is reasonable.

QuickTime Player software

This is the default video processing software on Apple computers , including many great functions to help you manipulate more easily in video editing as well as experience many other entertainment features.

Instructions for processing videos with QuickTime Player

Step 1 : Open the application and select the video by going to File -> Open File .

Step 2 : Start processing the video size, you need to go to File -> Export As . You will see 4 suggested video quality options : 4k (if available), 1080p, 720p and 480p .

Step 3 : Select the quality conversion according to your needs and proceed to export the file.

Reduce the size of the website online

Instead of downloading software to your computer to process video capacity, you can now do this on an online website like Tnhelearning.edu.vn suggests the following:

VideoSmaller Platform (Web)

This is a completely free and widely used file processing website.

The steps to compress the size are very simple, you just need to go to VideoSmaller.com, then upload the video you want to process and adjust a few options according to your purposes:

• Option 1 : reduce the size of your current video file while keeping the optimal quality .
• Second option : change the display video aspect ratio . This will reduce video quality but give good frame visibility (no image loss when viewing).

In addition, there is also a function to remove audio from your video ( Remove audio from video ) which is also one of the ways to help you reduce video size.

Clipchamp Platform (Web)

Clipchamp service is also a good choice, but you need to pay to use it . This website provides you with many functions for video editing .

The video processing steps are also very simple, just go to the Clipchamp.com website, upload the video and process according to the suggested content.

Thus, Tnhelearning.edu.vn has helped you learn 5 ways to reduce video size while ensuring the quality is retained in the most optimal way. Regardless of the software platform you use, you should also consider the factors that affect the file size, so that after processing, you can get the video quality you want!