Buffering on YouTube refers to the interruption of video playback due to an insufficient data transfer rate. This manifests as a pause in the video while the application downloads enough data to continue playback smoothly. For example, a user attempting to watch a high-definition video on a slow internet connection may experience frequent pauses as the video attempts to load.
Eliminating or minimizing this interruption is important for maintaining viewer engagement and ensuring a satisfactory viewing experience. Historically, users simply tolerated buffering as a common limitation of internet video. However, with increased expectations for seamless streaming and the prevalence of high-resolution content, resolving buffering issues has become essential for both content creators and viewers.