An mp4 container may contain metadata. WDTV Live incorrectly identifies certain metadata (e.g. the chapters created by Handbrake and others) as subtitles and attempts to display them when the video is played. This results in garbage such as “Chapter 16” being displayed when a video is first played. It can of course be cured by turning off subtitles…but if you could possibly see to adding this irritating little bug to your list for future attention, this wonderful device would be even better.