Video coding is the process of compressing and encoding video files to reduce their size for storage and transmission. This is essential for streaming services, online video sharing, and digital broadcasting, as it allows for faster loading times and less bandwidth usage. Common video coding formats include H.264, H.265, and VP9. The coding process involves analyzing video frames and removing redundant data, which helps maintain quality while minimizing file size. Decoding is the reverse process, where the compressed video is converted back into a viewable format. Efficient video coding is crucial for delivering high-quality video experiences across various devices and platforms.