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Video Compressor

World's best video compressor tool to reduce video file size

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Video Quality & Size
H265 codec can reduce video size 20-75% more compared to H264 (especially high-resolution video)
Choose "Target a file size" to get an exact output file size. Choose "Target a video quality" when quality is of importance.
%
Select a target file size as a percentage of the original. Smaller values compress more. For example, a 100Mb file would become 25Mb if you select 25%.

World's best video compressor to compress MP4, AVI, MKV, or any other video file. Default advanced options reduce the video size to 60% of the original. Adjust options to compress even more!


How To Compress a Video?

  1. Click the “Choose Files” button to select your videos.
  2. Click on the “Compress Now!” button to start compression.
  3. When the status change to “Done” click the “Download” button.

Which Encoder Is Best for Compressing Video?

We use two popular video encoding methods that are supported by most modern devices and browsers: H.264 and H.265. Out of these two encoding methods, H.265 yields better compression, especially at higher resolutions such as 1080p or 4k.

Advanced Methods of Video Compression

There are two main methods to compress a video. You can either optimize the bitrate or resize the video to a smaller size. We provide 4 settings related to both methods. Here’s an explanation:

1. By Video Quality

CRF (Constant Rate Factor): CRF method attempts to keep a constant perceived video quality. To do that, it uses different compression levels on different frames. For the H264 encoder, possible CRF values range from 0 to 51. Higher values mean more compression (reduced file size), lower values mean better quality (but bigger file size). The default is set at 23.

Preset: Presets refers to the video compression speed. Choosing a slower preset allows better optimization (lower bitrate/file size) for a given video quality level. If you prefer lower file size over encoding time, choose a slower preset.

2. As a Percentage of the Original Size (Default)

This method allows you to set a target file size for your video as a percentage of the original size. For example, if you set it to 60% for a 1Gb file, we will attempt to make your compressed file size 600Mb or less. 

The pros of this method are, you can achieve a certain target size. The downside is you don’t know how the target size will affect video quality. To overcome this, start with a decent size (as a percentage of the original), then test for video quality. Increase the target size if you need better quality.

This is the default video compression method used.

3. Set Max Bitrate

This method allows you to set the max bitrate for given video quality. The quality is set by CRF (constant rate factor). Select this method if you are using the video in a streaming application where you want to control the streaming bandwidth rate. To choose this option, select "By Max Bitrate" from the "Video Compress" dropdown.

For more info: read video bitrate control

4: Make Video Size Smaller (Re-Size)

Choosing a smaller video resolution (dimensions) can also save file size. For example, if you have a 4K (4320p) video but your target device is 1080p, you can downsize the video to fit 1080p and save file size. To choose this option, choose "Re-size video" from "Advanced Settings" above.

How to play compressed video?

Codecs we use for compression are supported by all major browsers and devices. So you should not have any playback issues. If any issues, try opening the video with the free VLC player (Windows, Mac, Linux, and Mobile versions available). Allowed file types are: vob, wtv, mpg, mov, xvid, rm, m4v, m1v, flv, divx, mp4, 3gpp, mkv, avi, mpv, rmvb, dvr-ms, wmv, f4p, 3gp, 3g2, ogv, swf, m2ts, qt, mpeg, mts, webm, f4v, asf



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