You may experience an issue where a video does not play in Safari. There are many reasons why this problem might occur, but there are solutions if you are using Safari 7.0 or 6.1 in Mac OSX. Follow these steps to resolve the playback issue:
Disabling Safari Power Saver:
1. Open Safari
2. Click on the bold 'Safari' in the top left hand corner of the screen. This will reveal a drop-down list.
3. Choose 'Preferences'.
4. Click on the 'Advanced' tab.
5. Uncheck the box labeled 'Stop plug-ins to save power'.
6. Close the 'Preferences' box and reload the Mediasite webpage. Your video should now play properly.