title: wmv video; packet fragment position invalid; what does it mean and how to resolve it
body: <p>I am trying to do some work on a wmv video file. I'm using ffmpeg and ffprobe. I'm getting the message: &quot;packet fragment position invalid 0,0 not in 0&quot;.</p>
  <p>I am not familiar with video processing, quite a newbie actually. I didn't find an explanation what this exactly means and no hints on how to possibly resolve that problem.</p>
  <p>I am able to play the video using VLC media player as well as other players.</p>