Is the BMP format dying? In many ways, yes. The industry is shifting toward (for HDR and deep compositing) and TIFF (for lossless compression). However, BMP remains the "lowest common denominator"—every operating system, every image viewer, and every video editor can open a BMP instantly without plugins.
: Designed for Windows (tested on "Windows All" as of 2012). How it Compares to Modern Alternatives Doremi Video to BMP Converter