A bug in FFMPEG, an open-source library that powers a wide range of media players, video converters and video rippers, can get you infected if you open the wrong file. The bug resides in the libavcodec.dll library responsible for encoding, decoding and transcoding files from and to various formats. When a user tries to play a specially-crafted ASF, QuickTime (QT) or Windows Media Video (WMV) file, the local memory gets corrupted, allowing execution of arbitrary code.”]