MP4 Compressor

Reduce the size of your MP4 video with a handy online compressor

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How to compress MP4

Upload MP4

Select one of the proposed compressing applications by clicking on the button above the editor window.

Compress it

Use the functionality of the selected application or, if necessary, try other available applications.

Download video

After completion, do not forget to save and download the result to yourself. Share our tool on social media.

How MP4 compressing works

You may need to compress MP4 video for many different reasons - to save space in the device's memory or to transfer a file over the Internet. In any case, you need a good compressor that will do its job at the highest level. Modern video compression algorithms differ from image compression algorithms with which you may be familiar. The extra dimension and time means that various mathematical and logical methods are applied to the video file to reduce the size while maintaining the video quality. Video compression algorithms look for spatial and temporal redundancy. By encoding redundant data a minimum number of times, the file size can be reduced. Imagine, for example, one minute as the character's face slowly changes its facial expression. It doesn't make sense to encode a background image for each frame: instead, you can encode it once and then refer to it until you know the video is changing. This inter-prediction coding is responsible for artifacts that interfere with the compression of digital video: parts of the old image move with the wrong action because something in the coding has become useless.

While most of us only watch videos or movies almost every day, few are interested in formats. Typically, each operating system or software has its own formats, but some of them, such as MP4, are universal, making them much easier to distribute and use. MP4 file can contain video, audio, graphics and subtitles. Typically, a file with this extension is a video, movie, or other video. The MP4 format is widely used for video transmission over the Internet and distribution of mobile media content. The MP4 format is an add-on plug-in to MPEG4, which is a standard for storing encoded multimedia content (sound files, video content, etc.). In fact, MP4 is a technical specification, the requirements for which are established in the international standard ISO 14496-1. The most popular media format these days is MP4. Usually the built-in video player is enough to open it, but users often resort to additional software. The format allows for streaming over the Internet. In this case, data containing information necessary for broadcasting is transmitted along with the file. MP4 is one of the new standards in the world for digital coding of video and audio information. This format serves as a container for various types of audio and video streams (i.e. it does not include any information compression algorithms).

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