In this paper, a soft error resilient video encoder design is presented. The design uses the inherent architecture of modern video encoders as a basis for building a checksum based error detection mechanism. Modern video encoders use previously coded data in a video sequence as a reference to encode future data. Data prediction is efficient in terms of compression, but it enables errors to potentially affect large portions of a video sequence. The proposed Block Frame Checksum based error correction technique improves video quality by limiting error propagation. The design provides an on-line, end-to-end error detection scheme that minimizes the impact of soft-errors on video quality without reprocessing data. Additionally, scalable checksum processing provides a trade-off between power used for error detection and video quality.