Most videos are already compressed using lossy compression. The file size of uncompressed and losslessly compressed videos are just too large to be practical, which is why it is rare to find either outside of professional video production studios.
Despite the fact that your video has probably already been compressed – it should be possible to compress it further. In fact, there are two main ways to do that:
1. Transcode the Video to a Codec with Better Compression
The video compression that is used is determined by the video codec. Because of that if you transcode your video to a different codec that has better compression – its file size will be smaller, but its quality will remain similar.
If you want to use this option you will need to:
- Identify the video codec that the video is currently using.
- Find a video codec with better compression.
- Make sure the new video codec is supported by the device or platform where the video will be viewed.
At times you may find that there is no video codec with better compression that is supported – in which case you won’t be able to use this option.
Assuming your video is relatively new it probably uses the H.264 video codec. In that case, you could just check for H.265 (HEVC) support – as it is one of the only viable options.
Keep in mind that new codecs are constantly being released, and in time other options may be viable too.
2. Reduce the Video Bitrate Setting
The video bitrate setting can compress video files by directly reducing the amount of data that is used each second. However, this option will affect the quality of your videos, especially if you reduce the bitrate significantly.
As a rule, it is best to reduce the bitrate on a sample of the video and in small increments. Each time you reduce it by an increment, you can check on the quality and whether or not there are too many video compression artifacts.
By slowly reducing the bitrate you should find it easier to find an acceptable compromise between the video’s quality and its file size.
Aside from actually compressing the video file, there is another way to make it smaller: Shorten it. That is worth keeping in mind, especially if you’re only interested in the part of the video.
If you want to start to compress videos right now you could use Movavi Video Converter (www.movavi.com/videoconverter/). It will enable you to transcode your video, reduce its bitrate, or even trim out and extract clips if you want. It can also convert audio and image files, improve the video quality, and help you to resize your video in different ways.
At times you may want to try both of the methods described above in order to compress a video as much as possible. However, in many cases, you’ll find that one option may be preferable to the other – for various reasons.