Reducing the file size of a video to make it suitable for electronic mail transmission involves encoding the video data using a more efficient codec or reducing the resolution, frame rate, or bit rate. This process results in a smaller file that can be attached to an email without exceeding size limits imposed by email providers. For example, a large, high-resolution video recorded on a smartphone can be compressed before being sent via email.
The ability to transmit video files via email is crucial for rapid information sharing, collaboration, and communication in various professional and personal contexts. It bypasses the need for physical media or specialized file transfer services. Historically, limitations on attachment sizes necessitated these reduction methods to facilitate timely and cost-effective communication.