Knowing if it was in a program folder , a web search , or a download would help in providing a more specific report. [Ffmpeg-devel-irc] ffmpeg.log.20150104 - MPlayer

In technical environments, a file named vdr.mp4 is usually associated with:

If you have encountered this file on your system or the web:

: It is rarely a critical system file; it is usually user-generated or a temporary export.