How do I shrink the size of my phone videos?

Yanis's Samsung Galaxy S10 shoots high-quality videos but they take up too much space

How can I compress videos so I don't lose a lot of the quality? My phone, a Samsung Galaxy S10, makes really high quality videos but I would be satisfied if they looked like normal videos. Yanis

Videos take up a lot of space, and a lot of research goes into making them smaller. Other things being equal, a key factor is the size of the image, just as it is with still photographs. You can also reduce the file size by arbitrarily reducing the data rate or, for preference, by using a more efficient video compression system. The current favourite is MPEG-4/H.264/AVC (Advanced Video Coding), which is usually called MP4 for short. Technically, MP4 is the file container while H.264 is the codec that codes and decodes the video.