Dear Mr/Mrs We have a problem with video player via your web browser. It's working correctly with all others and it was OK with older version of your browser too. You can see example video here: http://www.digisport.sk/sprava/968-mix_zona_09_10_2013/ That is a mp4 video with h264 codec. Video is ok, but audio is playing very slowly. We can't fix this issue. Can you help to us with this problem? Best regards