I have recently upgraded to v10.4 from v10.2. Suddenly I can't play random files in my collection, all in AVI format. VLC plays them fine. The files just never start from the beginning when play button is pressed or the file is double clicked to start. The play button clearly remains pressed. Even if I seek somewhere else on the bar, the behavior remains the same. The first frame is displayed only. Sometimes the video plays with no sound.
I have tried switching rederers, cleared cache, restored settings to default but to no solution.