When playing some videos encoded with xvid codec with qMediaPlayer there is an error, 'Media session serious error'. The error does not occurs for other encoding format (mp4, wmp).

The problem occurs for every qt program I tried that use qMediaPlayer (my own or those provided as examples). When converting the file with vlc to another format, it works fine.

Every other player on my computer play the xvid video without any problem.

The problem is the same on other computers, I have tried three different computers.