Fix video byline

It seems the media byline on tablet has regressed, this fixes that.

### Before
![google chrome](https://cloud.githubusercontent.com/assets/80089/3842593/9208dcc4-1e38-11e4-81a2-c9f6ca9b6461.png)

### After
![google chrome](https://cloud.githubusercontent.com/assets/80089/3842595/97507eee-1e38-11e4-90e1-2d3e5d02b424.png)