Problem with playing video after upgrade to 14.04

[Martinix]

Hi,
after installing 14.04 I cant play videos (tested MPEG4 and matroska). After opening player video starts playing with hight speed (maybe 8x faster then normal) and no sound. I also tested vlc - no window appear but it shows at task manager and after few seconds later vlc disappear. Same result without opening video (just opening vlc). I run out of ideas
My computer: HP 4710s
Intel Core2Duo
Ati mobility radeon hd 4330

Thank you for your help

[Martinix]

Thank you for your reply
I get VLC to work. I had to delete config file and set ALSA output. I have only GStreamer in backend settings so all players except vlc dont work. However Dragon playing with normal speed but still no sound. Any Idea?

[whatthefunk]

Are you watching the videos through HDMI?

[Martinix]

whatthefunk: nope, I dont have HDMI connected. Watching on notebook screen. VLC playcing normaly at this moment also at HDMI.

Teunis: Will you write me little how to? thank you