For HTML 5 output, VideoStudio Pro X5 produces both H.264 and WebM video files so that it can accommodate all browsers; producing two files, however, means additional rendering time.

To convert the Unreal Engine 3 tech demo to standards-compliant HTML5, Epic made use of Emscripten, a tool that allows users to compile programs written in C and C++ into asm.js, a stricter subset ...