H.264 is a widely used video compression standard that allows for high-quality video to be stored and transmitted efficiently. It reduces the file size of videos while maintaining good visual quality, making it ideal for streaming services, video conferencing, and digital broadcasting. Developed by the ITU-T Video Coding Experts Group and the ISO/IEC Moving Picture Experts Group, H.264 is also known as AVC (Advanced Video Coding). It supports various resolutions, from standard definition to high definition, and is compatible with many devices, including smartphones, tablets, and televisions.