1 Answer

Is not FOX’S fault so it might be your TV provider.

Fox is unique among US broadcasters in distributing its network HD feed over satellite to affiliates as an MPEG transport stream intended to be delivered bit-for-bit to viewers' television sets. During network time, local commercials are inserted using a transport stream splicer. The affiliates of most other networks decode compressed satellite network video feeds and then re-encode them for final over-the-air emission.

Since late July 2010, when Fox began to broadcast their sports programming with graphics optimized for 16:9 displays rather than the 4:3 safe area, the network has asked cable and satellite providers to comply and use the No.10 Active Format Description code they now send out over Fox programming, which has 16:9 content display in letterboxed mode on 4:3 screens and has graphical elements optimized for the 16:9 screen. Subsequently a number of Fox O&O's and affiliates also now send out the AFD No.10 flag over their HD local news and syndicated programming with graphical elements optimized for 16:9 to allow that programming to appear in widescreen format on 4:3 analog sets.