Abstract: A video authoring application combines a plurality of individual video files into a bundled video file. The combination is performed on a frame-by-frame basis by horizontally and/or vertically stacking the frames of the individual video files together to assemble a bundled frame. The sequence of bundled frames is encoded by a transcoder to produce the bundled video file. The video authoring application also creates video definition data, which specifies the positional locations or areas of each of the individual video file frames within the bundled video file frames. Using the video frame definition data, the individual bundled frames can be extracted from the decoded bundled video file. The bundling of the multiple individual video files into a single file enables an end user to dynamically switch between the different individual files while maintaining time and audio synchronization between the files during playback.